<?xml version="1.0" encoding="utf-8" ?>
<rss version="2.0">
<channel>
<title>Chinese Journal of Magnetic Resonance Imaging RSS feed</title>
<link>http://med-sci.cn/cgzcx/en/contents_list.asp?issue=202008</link>
<language>zh-cn</language>
<copyright>An RSS feed for Chinese Journal of Magnetic Resonance Imaging</copyright>
<item>
<title><![CDATA[Imaging diagnosis criteria of acquired immunodeficiency syndrome associated PCNSL]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.001</link>
<description><![CDATA[Acquired immune deficiency syndrome (AIDS) related primary central nervous system lymphoma (PCNSL) has unique imaging manifestations. Based on the summary of literature case statistics and the latest research evidence, we formed the updated imaging diagnostic recommendation: MRI without and with contrast scanning is the strongly recommended examination methods for AIDS-related PCNSL. Imaging signs or findings summarized as follows: THREE HIGH, increased diffusion weighted imaging (DWI) signal in solid parts of the tumor, high density of CT without contrast, and basically uniform enhancement. TWO LOW, hypo-intensity of ADC maps, iso-or hypo-intensity of T1WI without contrast and T2WI. THREE COMMON, mostly located in the midline structural area of the brain, often manifested as multiple, cystic changes. The special MRI enhancement was characterized by "Notch sign" "Sharp Angle sign" "Snow-holding sign" and "Jagged or Spinous shape". For clinical suspected cases, such as imaging examination in accordance with the above findings, can be used as the imaging diagnostic criteria of AIDS related PCNSL, so as to provide a rich, accurate diagnostic information for clinical with a definite diagnosis, effectively to improve the ability of AIDS related PCNSL early diagnosis, in order to easily form the optimal decision scheme, and to achieve truly early and precise treatment.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[The basis and application of parameters derived from MR as endpoints of myocardial infarction—the interpretation of a consensus statement for cardiac MR endpoints selection in myocardial infarction trials]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.002</link>
<description><![CDATA[With the update of the research evidence related to myocardial infarction (MI), the parameters of cardiovascular magnetic resonance (CMR) has become surrogate endpoints with proven links to hard outcomes. An expert consensus statement for CMR endpoints selection in MI experimental and clinical trials was released by the American College of Cardiology Foundation (ACCF) in 2019. The consensus, based on a large amount of evidence and cutting-edge research, summarizes the pathophysiology of myocardial ischemia/reperfusion injury and CMR tissue characterization of MI, as well as the CMR endpoints selection for studies related to MI is recommended. The author interprets the update viewpoints in this consensus in order to provide a reference for the direction of experimental and clinical research about MI and CMR in the future.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Clinical application of magnetic resonance NODDI in the diagnosis of putamen disease in patients with Parkinson's disease]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.003</link>
<description><![CDATA[Objective: To investigate the clinical value of neurite orientation dispersion and density imaging (NODDI) in patients with Parkinson's disease (PD). Materials and Methods: MRI plain scan and NODDI imaging were performed in 41 PD patients and 22 age and sex matched normal subjects as control group to quantitatively analyze the changes of the putamen in PD patients with Parkinson's disease. The intracellular volume fraction (Vic), directional dispersion index (ODI) and isotropic volume fraction (Viso) of the putamen were compared between the two groups. Multivariate logistic regression analysis was used to determine the independent predictors of PD. Results: The levels of Vic and ODI in the putamen of patients with PD were significantly lower than those in healthy controls. Multivariate logistic analysis showed that the change of Vic in the putamen of patients with PD was significantly correlated with PD (P＜0.05), the putamen was an independent predictor of PD. In the ROC analysis, the Vic in the contralateral putamen showed the best diagnostic performance. Conclusions: NODDI may be helpful in the diagnosis PD.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Resting-state functional magnetic resonance study of default mood network in patients with subacute post-ischemic stroke]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.004</link>
<description><![CDATA[Objective: This study identified altered functional connectivity (FC) in patients with post-stroke depression (PSD) at the subacute phase in default mood network (DMN). The correlation between FC and the severity of PSD was also investigated. Materials and Methods: Resting-state functional magnetic resonance imaging (rs-fMRI) was performed on 26 PSD patients, 24 stroke patients without depression, and 24 age-matched normal controls. The FC values of DMN were calculated and compared among the three groups. The Hamilton Depression Rating Scale (HDRS) (17 items) was employed and the score was correlated with FC in the PSD group. Results: The FCs of DMN were altered in PSD patients at the subacute phase compared to stroke patients without depression and normal controls (NC). Moreover, the left inferior parietal gyrus (which indicated altered FC) were significantly correlated with HDRS scores in PSD patients. Conclusions: Alteration of DMN might be correlated with the development of PSD at the subacute phase of stroke.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[The value of minimum apparent diffusion coefficient value in evaluating Ki-67 proliferation index of adult intracranial ependymoma]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.005</link>
<description><![CDATA[Objective: To explore the value of minimum apparent diffusion coefficient (ADCmin) value in evaluating Ki-67 proliferation index expression in adult intracranial ependymal tumors. Materials and Methods: A retrospective analysis of the preoperative routine MR and DWI data of 29 adult patients with intracranial ependymoma confirmed by surgical pathology and Ki-67 proliferation index in our hospital from May 2015 to March 2020. The ADCmin value of tumor parenchymal components was measured on the ADC maps, and the correlation between ADCmin value and Ki-67 proliferation index expression was calculated. According to Ki-67 proliferation index value, it was divided into high expression group (Ki-67≥ 10%) and low expression group (Ki-67＜10%), and compare the ADCmin value between the two groups, using receiver operating characteristics (ROC) curve to evaluate the ADCmin value to judge the performance of Ki-67 proliferation index expression level. Results: There was a negative correlation between ADCmin value of adult intracranial ependymal tumor and Ki-67 proliferation index (r=-0.596, P＜0.01). The ADCmin value of the Ki-67 proliferation index high expression group was significantly smaller than that of the low expression group. When uses the ADCmin value to identify the high and low expression groups of the Ki-67 proliferation index, the AUC value was 0.897, with 0.871×10-3 mm2/s is used as the best discrimination threshold, the sensitivity and specificity of the high and low-level Ki-67 proliferation index are 81.3% and 92.3%, respectively. Conclusions: ADCmin has potential value for non-invasively predicting Ki-67 proliferation index expression level and evaluating its malignancy in adult intracranial ependymal tumors.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Diagnostic value of DESH for shunt responsiveness in idiopathic normal pressure hydrocephalus: A meta-analysis]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.006</link>
<description><![CDATA[Objective: To systematically review the predictive value of disproportionately enlarged subarachnoid space hydrocephalus (DESH) in the shunt responsiveness in idiopathic normal pressure hydrocephalus (iNPH). Materials and Methods: WanFang Data, CNKI, PubMed, the Cochrane Library, Web of Science, and Embase databases were electronically searched to collect studies on the predictive value of DESH in the shunt responsiveness in iNPH from inception to May 2020. Two reviewers screened literature, extracted data and assessed the risk of bias of included studies by QUADAS-2 standard independently according to inclusion and exclusion criteria. Meta-Disc 1.4 software was used to performed Meta-analysis. Results: A total of 5 studies involving 333 patients were included. The results of our study showed that the pooled sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, diagnosis odds ratio and area under the curve of summary receiver operating characteristics were 60%[95% CI (0.54, 0.67)], 66%[95% CI (0.56, 0.76)], 1.87[95% CI (1.13, 3.10)], 0.45[95% CI (0.23, 0.88)], 4.91[95% CI (1.45, 16.68)] and 0.75. Conclusions: This study to systematically evaluate the diagnostic value of DESH sign on the prognosis of iNPH shunt surgery at home and abroad. Although DESH sign has only moderate diagnostic value, it still has relatively important clinical significance. Due to the limited quality and quantity of included studies, the results of meta-analysis should be validated by more studies. It also needs to pay attention to the significance of imaging especially MRI in the diagnosis of iNPH.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Clinical value study of different post label delay of 3D-ASL and white matter lesion score in vascular cognitive impairment]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.007</link>
<description><![CDATA[Objective: To study the correlation between different post label delay (PLD) of magnetic resonance 3D arterial spin labeling (3D-ASL) technology, white matter lesions (WMLs) scores and cerebral blood flow (CBF) in vascular cognitive impairment (VCI). Materials and Methods: A total of 52 patients with ischemic cerebrovascular disease diagnosed in the department of neurology were collected. The MoCA scale was used for cognitive function assessment and the patients were divided into the cognitive impairment group (30 cases) and the cognitive normal group (22 cases). the 3D-ASL brain perfusion imaging techniques with different PLD (1.5 s, 2.5 s) was performed, and GE AW4.5 image post-processing software was applied to perform mirror symmetry measurements (CBF1.5, CBF2.5) in bilateral frontal parietal temporal lobe, hippocampus and thalamus. The WMLs scores of the two groups were compared and the correlation between WMLs score /MoCA scale score and CBF values of each brain area. Results: ①The WMLs scores of the VCI group and the control group were 4.87±1.68 and 2.77±1.66, respectively; the scores of the MoCA scale were 18.77±2.98 and 28.18±0.96, respectively, the differences were statistically significant (P=0.000). ②In patients with VCI, CBF1.5 is significantly decreased in the bilateral frontal-temporal lobe, hippocampus, and right thalamus, while CBF2.5 is only reduced in the bilateral frontal-temporal lobe, hippocampus; only the difference between CBF1.5 and CBF2.5 in the left / right frontal lobe was statistically significant (P=0.000/0.019). In all brain regions of all patients, the left and right frontal lobe CBF1.5/CBF2.5 were significantly negatively correlated with WMLs scores (r1.5=-0.567, -0.590/r2.5=-0.553, -0.558; P＜0.05). MoCA scale score was positively correlated with CBF1.5 (bilateral frontotemporal lobe, hippocampus, right thalamus) /CBF2.5 (bilateral frontal lobe, hippocampus, left temporal lobe, right thalamus), with the highest frontal lobe correlation (left and right frontal lobe: r1.5=0.806, 0.688/r2.5=0.719, 0.620; P=0.000). Conclusions: PLD1.5 is more sensitive to detection of VCI cerebral hypoperfusion, while PLD2.5 is more accurate in showing the range of hypoperfusion.WMLs was positively correlated with VCI severity.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[The value of amide proton transfer imaging in predicting the effect of nasopharyngeal carcinoma after chemoradiotherapy]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.008</link>
<description><![CDATA[Objective: To investigate the value of amide proton transfer (APT) imaging in predicting the efficacy of radiochemotherapy in nasopharyngeal carcinoma (NPC) during short and medium follow-up. Materials and Methods: The clinical information and MRI data of 40 NPC patients with radiochemotherapy were analyzed retrospectively. The patients were divided into two groups of recurrent group (n=14) and non-recurrence group (n=26). APT values were measured for each group. The rank sum test was used to compare the APT difference between the two groups before and during treatment. Receiver operator characteristic curve (ROC) was plotted to assess the diagnostic efficacy. Results: There was no significant difference in the mean, median and 90th percentile of APT between the recurrent and non-recurring groups before treatment. After 2 courses of chemotherapy and 5 courses of radiotherapy, although there was no significant difference of mean APT values between the two groups, the median and 90th percentile APT values were significantly different between the recurrent [(2.08±0.26)% and (4.45±0.86)% for median and 90th percentile values, respectively] and non-recurrence [(1.86±0.35)% and (3.64±0.70)% for median and 90th percentile values, respectively] groups (P＜0.05). In addition, the optimum threshold, sensitivity, specificity, the area under the ROC curve (AUC), and 95% confidence interval of median and 90% digits are 1.80%, 85.7%, 65.4%, 0.753, 0.605—0.901 and 3.92%, 85.7%, 69.2%, 0.786, 0.627—0.945, respectively. Conclusions: The median of APT combined with 90th percentile can better predict the efficacy of radiochemotherapy for NPC.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[A preliminary investigation of MRI categorization of thymic tumors]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.009</link>
<description><![CDATA[Objective: To explore the categorization of thymic tumors on MRI by using the similar mode of BI-RADS in breast diseases. Materials and Methods: From May 2014 to August 2018, 85 cases of pathologically confirmed thymic tumors were examined by MRI. The lesions were categorized into Ⅰ—Ⅴ according to signal patterns and their morphological features with reference to WHO histopathological classification and Masaoka-Koga staging. Results: MRI categorization was well consistent with WHO classification and Masaoka-Koga staging. Of 85 cases of thymic tumors, 15/16 cases of thymic cysts were category Ⅱ, indicating benign lesions; 2/3 cases of benign thymic hyperplasia, 4 cases of type A, 15/17 cases of AB type, 14/17 case B1 thymomas were category Ⅲ, indicating low-risk lesions; 5/6 cases of type B2 and 6 cases of type B3 thymoma were category Ⅳ, indicating high-risk lesions; 9/11 cases of thymic carcinoma were category Ⅴ, indicating invasive malignant lesions. The spearman correlation coefficient was 0.808, where t=12.499 and P＜0.01. Conclusions: On the multiparametric MRI, the thymic tumors could be categorized into Ⅰ— Ⅴ as BI-RADS in breast lesions, which was well correlated to the WHO histopathological classification and the Masaoka-Koga staging and was helpful for the diagnosis and treatment plan of thymic lesions.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Reproducibility of apparent diffusion coefficient in the normal myometrium in proliferating phases and secretory phases]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.010</link>
<description><![CDATA[Objective: To evaluate the intra-and inter-observer consistency, reproducibility of the measurement of apparent diffusion coefficient (ADC) values of normal myometrium. Materials and Methods: 34 healthy females (18 in the proliferating phases; 16 in the secretory phases) underwent two MR scanning sessions with an interval of one menstrual cycle (28—32 days). The ADC values of normal myometrium were double-blind measured twice with an interval of one week in each session by two radiologists. Then tested intra- and inter-observer consistency, and analyzed reproducibility of myometrial ADC values in two sessions. Results: Intra- and inter-observer consistency of myometrial ADC values in two missions were both very good, their intraclass correlation coefficients (ICCs) were both greater than 0.75. The myometrial ADC values in the secretory phase were larger than these in the proliferating phase in each session (P＜0.05). The ADC values of myometrium in proliferative phase and secretory phase showed no significant difference between the two missions (P＞0.05), and further analysis of Bland-Altman found that the 95% confidence intervals in the proliferating phase were -14.3%—13.6% and -11.5%—12.8%, but in the secretory phase were -7.6%—7.0% and -7.7%—7.8%. The reproducibility of ADC value in the secretory phase of myometrium was better than that in the proliferative phase. Conclusions: The intra- and inter-observer consistency of myometrial ADC values measurement are satisfied, these provided more evidence for widely applying in clinic. But reproducibility of normal myometrial ADC values measurement in the secretory phase was better than that in the proliferative phase.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Evaluation of MRI grayscale flip image in the cortical abnormalities in patients with long bone lesions]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.011</link>
<description><![CDATA[Objective: To discuss the diagnostic value of MRI grayscale flip image in the cortical abnormalities in longbone lesions compared with conventional X-ray and CT images. Materials and Methods: A retrospective study of 100 patients with long bone lesions confirmed by surgical pathology from 2015 to 2019, there were 30 cases of bone tumor, 60 cases of trauma and 10 cases of bone infection. All patients were examined by DR, CT and MRI. Select MRI-T1WI image and right-click the mouse and click the corresponding tool options to obtain the grayscale flipped image instantly. The detection of cortical bone abnormalities (interruption, thickening, thinning) was statistically analyzed, compared with X-ray and CT, statistical analysis was performed using χ2 test analysis. Results: MRI gray scale flip image detected 79 cases of cortical abnormalities, with a detection rate of 79%, and 84 cases of X-ray detection, with a detection rate of 84%, CT images detected 100 cases of cortical abnormalities, with a detection rate of 100%. There was no statistical difference between MRI grayscale flip image and X-ray image in displaying of cortical abnormalities. MRI flip images and CT images have statistically significant differences in the detection of cortical abnormalities. Conclusions: MRI grayscale flip images are useful for assessing bone cortical abnormalities in long bone lesions, in the absence or inability to obtain plain X-ray or CT images (e.g., pregnant women), MRI grayscale flip images can be used to observe the cortical bone.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Clinical characteristics and imaging features of primary hepatic neuroendocrine neoplasm]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.012</link>
<description><![CDATA[Objective: To investigate the clinical characteristics and imaging features of primary hepatic neuroendocrine neoplasms (PHNENs). Materials and Methods: Clinical pathological information and imaging features of 11 histopathologically confirmed PHNEN patients were retrospectively reviewed. Results: All the patients were negative for liver hepatitis cirrhosis except one. The positive rate for neuron-specific enolase (NSE) was 75%. The histopathologic classifications of the 11 cases were NET (n=6; G1=1, G2=5) and NEC (n=5). The PHNENs can be single lesion (NET=4; NEC=1) or multiple lesions (NET=2; NEC=4). Seven cases (NET=3; NEC=4) were heterogeneous for the cystic change (n=4), hemorrhage (n=2) and calcification (n=1). Two patients had fluid-fluid levels. The lesions were restricted on MR diffusion weighted image (DWI) (n=6). Nine cases showed strong global enhancement and 8 cases exhibited wash out including 4 patients with hepatobiliary phase images showing hypointensity. Tumors on digital subtraction angiography (DSA) were manifested as hypervascular mass. Conclusions: PHNENs has specific features on clinics and imaging findings and they are valuable in the diagnosis and differential diagnosis.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Clinical application and feasibility study of DTI in the evaluation of nerve root injury caused by acute lumbar disc herniation]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.013</link>
<description><![CDATA[Objective: To explore the clinical application and feasibility of diffusion tensor imaging (DTI) in the evaluation of nerve root injury caused by acute lumbar disc herniation. Materials and Methods: 40 patients with acute lumbar disc herniation treated in our hospital from May 2017 to May 2019 and 40 healthy subjects who took part in the study in the same period were examined by magnetic resonance DTI, and the application value of DTI in the evaluation of nerve injury caused by acute lumbar disc herniation was analyzed. Results: There are no significant difference in fractional anisotropy (FA) value and ADC value between the left and right sides of the healthy control group (P＞0.05), and the FA value and ADC value in proximal, middle and distal of the ipsilateral side also have no difference (P＞0.05). In patients with unilateral acute lumbar disc herniation, the FA values of the proximal, middle and distal side are lower than those of the healthy side, but the ADC value of the affected side was higher than that of the healthy side (P＜0.05), and the FA value of the proximal side is higher than that of the middle and distal side, and that of the proximal ADC value is lower than that of the middle and distal side (P＜0.05). The FA value of the middle side is higher than that of the distal side and the ADC value of the middle is lower than that of the distal (P＜0.05). There is no significant difference in FA and ADC values among the proximal, middle and distal side of the healthy one. Conclusions: Magnetic resonance DTI can be used to quantitatively analyze the nerve injury in patients with acute lumbar disc herniation, and the FA value decreases and the ADC value increases in patients with acute lumbar disc herniation.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[The value of routine MRI examination for evaluating osteoporosis]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.014</link>
<description><![CDATA[Objective: To explore the value of routine MRI T2-weighted imaging (T2WI ) and frequency-selective saturation (FS) T2WI in evaluating osteoporosis. Materials and Methods: 88 cases were collected whose lumbar spine bone mineral density was determined by dual-energy X-ray absorptiometry (DXA ) and MRI within 1 month. According to the results of lumber DXA, cases were divided into normal bone mass group, osteopenia group and osteoporosis group, osteopenia group and osteoporosis group were classified as abnormal bone mass group. MRI mean signal difference of 1-4 lumbar vertebrae in the sagittal plane T2WI and FS-T2WI among three group and the diagnostic efficacy value between normal and abnormal bone mass group were analyzed. Results: The mean signal intensity difference of normal bone mass group, osteopenia group, osteoporosis group and abnormal bone mass group were 103.95±34.08, 193.46±38.35, 206.80±34.72, 202.65±35.99 respectively. The difference among the three groups were statistically significant (F=88.19, P＜0.01). The difference between normal bone mass group and osteopenia group was statistically significant (P＜0.01). The difference between normal bone mass group and osteoporosis group was statistically significant (P＜0.01). The difference between osteopenia group and osteoporosis group was of no statistically significant (P=0.24). The difference between normal and abnormal bone mass group was statistically significant (P＜0.01). When the mean signal intensity difference was 156.15, the largest area under the ROC curve was 0.983, with the sensitivity of 93.3% and specificity of 93.0%. Conclusions: MRI mean signal intensity difference of lumbar vertebrae in T2WI and FS-T2WI can indirectly reflect the bone metabolism by detecting the content of bone fat, it has important significance to evaluate osteoporosis.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Value of magnetic resonance imaging combined with peripheral blood human leukocyte antigen B27 detection in evaluating hip joint lesions in ankylosing spondylitis patients]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.015</link>
<description><![CDATA[Objective: To investigate the value of magnetic resonance imaging combined with peripheral blood human leukocyte antigen B27 (HLA-B27) detection in evaluating hip joint lesions in ankylosing spondylitis (AS) patients. Materials and Methods: One hundred and eighty-six AS patients with hip joint lesions treated in our hospital from February 2017 to February 2019 were enrolled, all patients received the magnetic resonance imaging and HLA-B27 detection. The accuracy of different examinations was compared, and the diagnostic value of the two methods for AS patients with hip joint disease was also analyzed. Results: The examination showed that 152 cases of HLA-B27 were positive in peripheral blood and 34 cases were negative, with a positive rate of 81.72%; The results of MRI showed that 280 hips (83.33%) were involved in 186 AS patients, 210 hips (75.00%) had hydrocele and 181 hips (64.64%) had bone marrow edema.Other types of AS hip joint lesions accounted for less than 60%.The detection rate of MRI + HLA-B27 examination was significantly higher than that of MRI examination (96.43% vs 83.33%, P＜0.05). Conclusions: MRI combined with peripheral blood HLA-B27 detection can effectively improve the diagnostic accuracy of AS patients with hip joint disease.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Research progress on the regulation target of real-time functional magnetic resonance imaging neurofeedback]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.022</link>
<description><![CDATA[Real-time fMRI neurofeedback (rtfMRI-NF) technology can change the subject's neuroplasticity and learning ability. It has important clinical value for the possible treatments of neurological and psychiatric diseases and is the focus of current research. The principle is that by training subjects to regulate specific brain activity through rtfMRI-NF training and thereby change brain function and clinical behavior. Therefore, it is necessary to select appropriate regulation targets according to specific clinical applications before training. In recent years, with the rapid development of this technology, the analysis methods of rtfMRI-NF regulation target increase, so the choice is more and more diversified. According to the current research status of rtfMRI-NF, this paper divides the analysis methods of regulation targets into the following three types: based on region of interest activity, based on brain connections, and based on multi-voxel pattern analysis, which are introduced and discussed the existing problems and future prospects.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Advances in multimodal MRI of cognitive impairment in neuromyelitis optica]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.023</link>
<description><![CDATA[Neuromyelitis optica (NMO) is an inflammatory demyelinating disease of central nervous system (CNS) whose main characteristic is the compromise of the spinal cord and the optic nerves. Moreover, it can also affect the brain, leading to cognitive impairment. In recent years, many scholars have carried out clinical and neuroimaging studies on cognitive impairment of neuromyelitis optica. And multimodal MRI plays an important role in explaining the possible mechanism behind it. The purpose of this article is to review the recent MRI findings in cognitive impairment in NMO.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Advances of fMRI in preoperative localization and prognosis evaluation of temporal lobe epilepsy]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.024</link>
<description><![CDATA[Temporal lobe epilepsy is the most common type of focal epilepsy and easily develops into refractory epilepsy which requires surgery, but the recurrence rate is as high as 40%. Today, the rapid development of functional magnetic resonance imaging has made great progress in the study of precise preoperative localization, prognostic assessment and cognitive function assessment of temporal lobe epilepsy. This article reviews the application of fMRI in surgery of temporal lobe epilepsy in recent years.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Research progress of brain functional magnetic resonance imaging of acupuncture Taichong and its matching points]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.025</link>
<description><![CDATA[Taichong acupoint is the primary acupoint on the liver meridian Foot-Jueyin. Clinically, it is often combined with Guangming and Hegu acupoint to treat a variety of diseases. Through searching and consulting literature, it can be seen that acupuncture at Taichong acupoint, Guangming acupoint and Hegu acupoint can not only activate functional areas of the brain, but also effectively activate specific functional areas of the cerebellum. Functional magnetic resonance imaging (fMRI) showed that the activation regions of the cerebellum were enhanced, and that the cerebellum was also specific and lateralized. The cerebellum was activated in the multi-task of acupuncture at Taichong and its different points. The neural network signals of acupuncture treatment related diseases may be integrated in the cerebellum. The purpose of this paper is to clarify the changes of the cerebellar functional areas caused by acupuncture at single points and acupoints matching, which is conducive to reveal the law of compatibility, has guiding significance for clinical application of acupoints matching, and can enhance the clinical therapeutic effect.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Research progress of infantile punctate white matter lesions on magnetic resonance imaging]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.026</link>
<description><![CDATA[Punctate white matter lesions (PWML) are prevalent white matter disease in infant (more than 20%), and may result in adverse neurodevelopmental outcomes. The injury has the characteristics of variability and expansibility, which can lead to extended alterations in brain structures and function. This paper mainly introduces the research progress of lesion characteristics and prognosis of PWML, and point out the existing problems and prospects in evaluation of PWML.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Applications of magnetic resonance imaging in traumatic spinal cord injury]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.027</link>
<description><![CDATA[Traumatic spinal cord injury (SCI) is one of the most common traumatic central nervous system injuries, with high disability and mortality rate. With the development of transportation and construction industry, the incidence of SCI is increasing year by year. The pathophysiological mechanism of SCI is complex, and the clinical treatment effect is unsatisfied, which brings heavy burden to the family and society. When the T2WI signal is found abnormal, the injury will be severely irreversible. At present, non-invasive MRI technology can not only observe the morphology and signal changes of the spinal cord, but also study the microstructure of it. MRI is a multi-modality method to diagnose traumatic SCI, it’s also a non-invasive and accurate way. Here, the progress of non-invasive MRI technology in traumatic SCI is reviewed in terms of providing a significant clinical reference for diagnosis and treatment.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[The advances in cardiovascular magnetic resonance imaging for light-chain and transthyretin-related amyloidosis]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.028</link>
<description><![CDATA[Amyloidosis represents a group of systemic diseases characterized by deposition of diverse origins misfolded protein fragments in multiple organs. Cardiac involvement, termed cardiac amyloidosis (CA), is the major factor determining the prognosis of patients. The most common types of cardiac amyloidosis in the clinic are light-chain amyloidosis (AL) and transthyretin-related amyloidosis (ATTR). The treatment and prognosis vary according to different amyloidosis types. Therefore, early and accurate diagnosis is essential in clinical setting. Cardiovascular magnetic resonance (CMR) characterized by multi-modality and multi-parameter imaging, could early detect the morphological and functional abnormalities and accurately evaluate the histological feature and microvascular changes in cardiac amyloidosis, providing important information for the diagnosis, risk stratification and prognosis. This article will review the progress of CMR application in cardiac amyloidosis.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[CEST MR contrast agent for pH-sensitive imaging]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.029</link>
<description><![CDATA[Chemical exchange saturation transfer (CEST) is a magnetic resonance imaging (MRI) methods developed on the basis of magnetization transfer technology and Chemical exchange theory. As an emerging method of MR imaging, CEST MRI has a broad application prospects in molecular imaging and various metabolic studies. Also, extracellular acid pH level of solid tumors is known to be associated with tumor proliferation, metastasis, invasion, radiotherapy and chemotherapy resistance. Therefore, accurate, non-invasive, and dynamic detection of extracellular pH (pHe) value of solid tumors could provide biological information for the detection of tumor acidosis and the efficacy of early anticancer treatment. This review mainly summarizes the application of several pH-sensitive CEST contrast agents alongside their advantages and otherwise.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
<item>
<title><![CDATA[Research status of Gadolinium-based contrast on safety]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2020.08.030</link>
<description><![CDATA[Magnetic resonance imaging (MRI) has become a crucial radiologic method for clinical diagnosis, and enhanced MRI can improve image quality of tissue, organ and vessel. Since U.S. FDA approved the first Gadolinium-based contrast agent (GBCA) in 1988, it has been used more than 30 years, and over 300 million patients worldwide were benefited by its diagnosis and treatment guidance. GBCA was considered as a comparative safer contrast media for its overall low incidence rate of adverse drug reaction. With deep understanding and widespread application of GBCA, clinicians pay more attention to its safety. In 2006, nephrogenic systemic fibrosis (NSF) which drew a lot radiologists’ attention. NSF is a rare but serious systemic disease characterized by fibrosis throughout the body in renally impaired individuals. Consider the patients’ benefit, the management of GBCA was strengthened to ensure the NSF incidence ratio decreased. Recently, another issue, Gd retention in the brain, especially in dental nucleus and globus pallidus arouse widespread attention again. Drug authorities executed different regulatory measures in different countries and regions make radiologists overstressed in GBCA application and selection. Therefore, the paper will review the literatures on the application of GBCA, summarizing the background, possible mechanism and clinical significance, providing a powerful theory foundation for GBCA selection and correct understanding in clinic.]]></description>
<pubDate>Thu,20 Aug 2020 00:00:00  GMT</pubDate>
</item>
</channel>
</rss>
