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<title>Chinese Journal of Magnetic Resonance Imaging RSS feed</title>
<link>http://med-sci.cn/cgzcx/en/contents_list.asp?issue=201802</link>
<language>zh-cn</language>
<copyright>An RSS feed for Chinese Journal of Magnetic Resonance Imaging</copyright>
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<title><![CDATA[Resting-state functional connectivity of striatum in Parkinson<sup><sup>,</sup></sup>s disease]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.001</link>
<description><![CDATA[Objective: To explore the functional connectivity changes in patients with Parkinson's disease (PD) by blood-oxygen-level dependent functional magnetic resonance imaging (BOLD-fMRI). Materials and Methods: Twenty normal control (NC) and thirty-five PD patients, who were examined with resting state fMRI. Selecting the bilateral striatum areas as the seed voxels. Two sample t test was used to compare the differences of L-STR and R-STR between PD group and NC group. Results: (1)L-STR: Compared to NC group, the positive functional connectivity of bilateral posterior cingulate cortex, right dorsolateral prefrontal cortex, left, posterior central gyrus, inferior parietal lobule, left precuneus, were decreased and the inferior frontal gyrus, parahippocampal gyrus, left hippocampus, left insula were increased in the PD group (P＜0.05, AlphaSim corrected). (2)R-STR: Compared to NC group, the positive functional connectivity of bilateral posterior cingulate cortex, dorsolateral prefrontal cortex were decreased and the right lingual gyrus, insular lobe, parahippocampal gyrus, bilateral hippocampus, left thalamus, were increased in PD group (P＜0.05, AlphaSim corrected). Conclusions: PD patients have abnormal brain functional connectivity network in resting state.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[The study of cerebral white matter change in children with new-onset, untreated idiopathic generalized epilepsy by using magnetic resonance imaging]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.002</link>
<description><![CDATA[Objective: Microstructural change of idiopathic generalized epilepsies (IGE) has been widely reported in children and adult patients. However, previous studies were focused on the chronic patients with antiepileptic drugs. This study aims at using the diffusion tensor imaging (DTI) technique to investigate the structural abnormalities of white matter in children with new onset, untreated IGE patients. Materials and methods: A total of 45 IGE patients (age range: 5—18 years, males: females=26:19) and 32 healthy controls (age range: 5—18 years, males: females=21:11) were included in our present study. Voxel-based analysis was used to compare the differences between patients and controls. Pearson correlation was used to investigate the relationship between altered DTI metrics and clinical parameters. Results: After family-wise error (FWE) correction, only the parameter of mean diffusivity (MD) showed decreased value in left paracentral lobule, right precuneus and right superior parietal lobule in IGE patients. If using AlphaSim correction, increased fractional anisotropy (FA) were found in the white matter of bilateral prefrontal lobe in children with first-onset, untreated IGE patients. There is no correlation between the changed MD/FA values with the clinical parameters. Conclusions: The findings indicate that microstructural impairments exist in children with new onset, untreated IGE. MD may be more sensitive to detect the microstructural change in the early stage of IGE. The increased FA and decreased MD may be a meaningful indicator of the initiating or compensatory mechanisms of IGE prior to cognitive decline.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[Study on resting-state functional magnetic resonance imagingin hyperacute phase of mild traumatic brain injury]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.003</link>
<description><![CDATA[Objective: To investigate the abnormal changes of brain function in the hyperacute period (＜24 h) patients with mild traumatic brain injury (mTBI) by using the amplitude of low-frequency fluctuation (ALFF) in resting state functional magnetic resonance imaging (rs-fMRI). Materials and Methods: 52 mTBI patients (mTBI group) and matched 21 healthy subjects (control group) underwent rs-fMRI examination. The DPARSF software was used to preprocess the fMRI data, the ALFF was compared between the mTBI and control group. Results: Compared with the healthy control group, the mTBI group showed significantly decreasing ALFF values in cerebellum posterior lobe, right middle occipital gyrus and postcentral gyrus. And the ALFF values increased in bilateral frontal lobe, bilateral caudate,medial frontal gyri and insula. Conclusions: In the case of normal routine MRI findings, ALFF technology showed to be more sentitive in detecting rs-fMRI abnormalities in patients with hyperacute mTBI.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[Nerve root sedimentation sign MRI quantitative analysis and its significance]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.004</link>
<description><![CDATA[Objective: To analyze the relations between nerve root sedimentation sign (NRSS) with the shape and size of dural sac and its significance. Materials and Methods: 3.0 T MRI data of 85 patients with lumbar degenerative were analyzed retrospectively, based on T2WI axis, NRSS negative (-) defined as horsetail nerve dorsal to the line connected between joints, and positive (+) as it ventral to the line connected between joints. The form of dural sac was divided roughly into two types of atrophy and full. The dural sac cross-section area (DSCA) and its ventral part (vDSCA) and dorsal part (dDCSA) to the line connected between joints were measured, and both ratio d/v value was calculated. DCSA was divided into three levels: no LSS (≥ 100 mm2), relative LSS (76—100 mm) and absolute LSS (≤75 mm2). Observed by two high qualification doctor independently, result was checked by Kappa consistency; the comparison of differences of DSCA, d/v value and d/v value of the corresponding level in different level DSCA between NRSS- and + was tseted by t test; the comparisons of d/v value between different DSCA levels using analysis of variance (ANOVA); the relationship between NRSS with dural sac form was tseted by χ2 test. Results: In 85 cases, the DCSA of lumbar 2—5 three planes was (138.5±38.9) mm2, (124.8±33.5) mm2,(117.5±29.6) mm2 in NRSS- respectively and (118.5±31.7) mm2 (P=0.032), (95.5±27.9) mm2 (P=0.029) and (80.2±25.4) mm2 (P=0.027) in NRSS+ respectively; the occupation ratio of atrophy and full dural sac was 0.16 in NRSS- and 6.3 in NRSS+(P=0.012); the d/v value was 0.64±0.29 in NRSS- and 0.38±0.22 in NRSS+(P=0.035); of  DSCA≤75 mm2, 76—100 mm2 and ≥100 mm2, the d/v value was 0.61±0.23, 0.42±0.18 and 0.32±0.11 respectively, two more significant difference (F=18.46, P=18.46) and the significant difference was  found in the corresponding level from lumbar 2—5 three section (P＜0.05). Conclusions: NRSS was related to the morphology of dural sac and the size of DCSA and d/v value, understanding these relationships will help interpretation of  formation mechanism of NRSS+.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[Clinical value of Gd-EOB-DTPA-enhanced MRI for diagnosis of focal hepatic lesions]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.005</link>
<description><![CDATA[Objective: To evaluate the application value of Gd-EOB-DTPA-enhanced MRI for diagnosing focal hepatic lesions. Materials and Methods: The Gd-EOB-DTPA- enhanced MRI and clinical datas of 34 cases of focal hepatic leisons were enrolled in this study. The pathological results were 20 cases of hepatocellular carcinoma (HCC), 4 cases of intrahepatic cholangiocarcinoma (ICC), 2 cases of combined hepatocellular carcinoma and cholangiocarcinoma (cHCC-CC), 7 cases of focal nodular hyperplasia (FNH) and 1 case of hepatic angiomyolipoma (HAML). Two radiologists separately analyzed MRI datas in blind way and made pathological diagnosis. Based on postoperative pathological results, diagnosis veracity and consistency of two radiologists were compared. Results: In dynamic contrast phase of Gd-EOB-DTPA enhanced MRI: 5 cases of HCC turned out to be atypical, including 3 cases of mild-enhanced HCC in arterial phase and 2 cases of HCC without obvious washout in transition phase. 1 case of FNH showed a little lower signal intensity than liver parenchyma in transition phase. 2 cases of cHCC-CC both had irregularly dynamic enhancement feature and possessed obvious feeding artery. In hepatobiliary phase: 1 case of HCC showed high signal intensity while the rest HCC were obviously low signal intensity. 4 cases of ICC performed low singal intensity within cloud mild-high signal intensity. 2 cases of cHCC-CC both were low signal intensity within lower signal intensity in the centre. 1 case of FNH featured slightly-low signal intensity within target high signal intensity. The diagnostic accuracy of two radiologists were 94.12% (32/34) and 97.06% (33/34) and the difference had no statistical significance (χ2=0.349, P＞0.05). Furthermore, the diagnosis consistency between radiologists was good (kappa=0.945, P＜0.05). Conclusions: Gd-EOB-DTPA enhanced MRI may improve the diagnosis veracity of focal hepatic lesion and it has important clinical value.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[Using multiparametric MRI to differentiate uterine leiomyosarcoma from atypical leiomyoma]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.006</link>
<description><![CDATA[Objective: To explore the diagnostic value of clinical parameters and qualitative and quantitative magnetic resonance imaging (MRI) features in distinguishing uterine leiomyosarcoma (LMS) from atypical leiomyoma (ALM). Materials and Methods: From June 2011 to December 2016, clinical data of 19 LMSs and 88 ALMs confirmed by pathology was collected in our hospital. Twelve LMSs and 79 ALMs underwent MRI scan before surgery and met the conditions. Analyzing and comparing the differences in MRI qualitative features, diffusion weighted imaging (DWI), and dynamic contrast-enhanced parameters between LMS and ALM. Results: There were significant differences between LMS and ALM in the following qualitative MRI parameters: LMS was mainly located in the uterine cavity with an ill-defined margin, showed heterogeneous signal on T2WI and hyperintensity on DWI, no enhancement region was in the center of the tumor on contrast-enhanced MRI (P＜0.05). For quantitative MRI parameters, mean apparent diffusion coefficient (mADC) values, early enhancement ratio (EER), maximum contrast enhancement ratio (MCER) of the solid component of LMS could help to distinguish from ALM (P＜0.05). According to receiver operating characteristic (ROC) curves, when the cut-off values of mADC was 1.09×10-3 mm2/s, the sensitivity and specificity were 97.5% and 75.0%. Conclusions: It was valuable to use multiparametric MRI to differentiate LMS from ALM.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[Assessment of diffusion kurtosis imaging in lumbar intervertebral disc degeneration]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.007</link>
<description><![CDATA[Objective: To investigate the value of diffusion kurtosis imaging (DKI) related parameters in assessing lumbar intervertebral disc degeneration. Materials and Methods: T2WI and DKI were performed on 81 subjects. DKI related parameters: mean kurtosis (MK) and mean diffusivity (MD) of nucleus pulposus (NP) were measured and correlated with Pfirrmann grades, disc level, and gender. ANOVA and post hoc tests were employed to compare MK and MD values of different Pfirrmann grades, as well as the values in different disc levels. Associations between MK, MD values and Pfirrmann grades were tested using Spearman rank correlation. Two-sample t-test was applied for the gender differences. Results: Pfirrmann grades were positively correlated with MK values (r=0.922, P＜0.01) and negatively correlated with MD values (r=-0.921, P＜0.01) in the NP. MK value in L5/S1 level (0.89±0.32) was higher than that in L1/L2 (0.82±0.14) and L2/L3 (0.84±0.23) (P＜0.05) level, MD value in L5/S1 level (1.83±0.30) was lower than that in L1/L2 (1.89±0.14) and L2/L3 (1.86±0.19) (P＜0.05) level. There was no statistical significances in MK and MD values of each level between males and females (P＞0.05). Conclusions:  DKI is feasible to assess early lumbar intervertebral disc degeneration. MK and MD values are correlated with Pfirrmann grades and spinal level, and have no correlation with gender.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[The shortcomings of conventional MR images in the diagnosis of lumbar disc herniation: comparative study with the results of surgical operation]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.008</link>
<description><![CDATA[Objective: To find out the shortcomings of the MR axial and sagittal images in the diagnosis of lumbar disc herniation by comparing with results of surgical operation and MR sagittal image and find out solutions. Materials and Methods: The MR images of 100 cases with lumbar disc herniation confirmed by surgical operation were retrospectively analyzed. MR conventional sequences (sagittal T1WI, T2WI and fat-suppressing sequences, axial T2WI) were observed. Using the surgical results as the standard, the diagnostic accuracy of disc herniation and the detection rate of the special signs of the disease were calculated and compared on sagittal and axial images, and the causes of misdiagnosis on axial and sagittal images were analyzed. Results: The accuracy of the diagnosis of the lumbar disc herniation using MR sagittal, axial images was 84.8%, 93.6%, respectively. Between axial and sagittal images there were significant differences (χ2=5.02, P＜0.05); The detection rates of the lumbar disc herniation or prolapse shifting upward or downward and dissociate nucleus on axial MR images were 36.00% and 45.45%, respectively, which were significantly lower than that on the sagittal images of 96.00% and 100.00% (χ2=20.05, 8.25, P＜0.05). The detection rate of lumbar disc herniation of foraminal and intervertebral foramen lateral type on axial images were 96.30% and 88.89%, respectively, which is significantly higher than that on the sagittal images of 74.07% and 38.89% (χ2=5.28, 9.75, P＜0.05). The main reasons of transverse axial image misdiagnosis of the herniated disk were the scanning range limited to the intervertebral space. Conclusions: MR axial and sagittal images have their own advantages in the diagnosis of the lumbar disc herniation. To pay more attention to MR sagittal images, to increase the range of axial scanning when necessary, to perform 3D CT can avoid the misdiagnosis of the special intervertebral disc protrusion on the MR images.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[Study on the method of establishing clinical evaluation model of MRI effect based on Logistic regression]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.009</link>
<description><![CDATA[Objective: MRI clinical application is extensive, but there is no corresponding clinical evaluation criteria. In this study, a set of standardized clinical efficacy evaluation criteria was established by Logistic regression model to promote the healthy development of MR industry. Materials and Methods: We collected 165 clinical MRI and ten factors influencing the T2 lipid suppression sequence in lumbar vertebrae were collected of each image. The 10 variables of MRI mass were analyzed and the MRI quality was evaluated as the dependent variable. Logistic regression was used to scientifically model and evaluate the clinical effect of MRI. We used the H-L χ2 test and the AUC (the area under the receiver-operating characteristic curve) value to test the calibration and discrimination of the model. Results: The model shows that when the total score was less than 3 points, the highest probability of good MRI was 0.02, that MRI quality was poor, didn't be used in clinical diagnosis, it was recommended that patients need to re-shoot MRI. When the total score of 5—6 points, the corresponding probability was 0.22—0.52, that the general quality of MRI, barely applied to clinical diagnosis. When the total score of 8—9, that the MRI quality was very good, can be very accurate for clinical diagnosis. The H-L value was 1.457 (P=0.962). The AUC value was 0.878 (95% CI: 0.814—0.941). Conclusions: Based on Logistic regression, the evaluation model has good calibration ability and distinguishing ability, which can be used in clinical practice to establish a standardized standard of clinical evaluation of MRI.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[Preliminary research of DKI parameters in predicting the prognosis of brain acute stroke lesions]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.010</link>
<description><![CDATA[Objective: This paper aims to research the greater advantage of diffusion kurtosis imaging (DKI) in predicting the prognosis of the brain acute stroke than diffusion weighted imaging (DWI) and diffusion tensor imaging (DTI). Materials and Methods: We chose a female patient who has 9 acute stroke lesions in brain. We measured the DWI, DKI parameters and volume of 9 lesions. We found that the prognosis of 9 lesions was diverse in the re-examination after 12 days. Four lesions which volume decreased were divided into group 1, and five lesions which volume increased were divided into group 2. The difference of DWI and DKI parameters between two groups was assessed by independent-samples t test. The correlation between DWI, DKI parameters and volume change before and after treatment was assessed by Pearson correlation coefficients. Results: It shows that mean kurtosis (MK), axial kurtosis (Ka), radical kurtosis (Kr), △MK and △Ka have strong correlation with the volume change before and after treatment, the correlation coefficients are 0.791, 0.805, 0.732, 0.802 and 0.855. △MK is significant difference (P＜0.05) between two groups of lesions. △ADC and other DKI parameters are not significant difference (P＞0.05) between two groups. Conclusions: The result indicates that the larger of the DKI parameters (MK, Ka, Kr) may predict the worse prognosis. DKI may provide guidance to clinical treatment and assessment in brain acute stroke.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[The study of the imaging features and pathological of breast sclerosing adenosis]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.011</link>
<description><![CDATA[Objective: To analyze the imaging features of breast sclerosing adenosis (SA) in mammography, ultrasound and MRI, and to explore their diagnostic values in preoperative examination. Materials and Methods: Imaging findings in 41 women (43 cases) with SA lesions confirmed by pathology were retrospectively reviewed (including 39 cases of mammography, 38 cases of ultrasound and 29 cases of MRI), imaging features of the disease were observed, and staged according to the breast imaging reporting and data system (BI-RADS). Malignancy were defined as BI-RADS≥4B, and misdiagnosis rates were calculated. Results: In the 43 SA lesions, 29 were simple SA lesions, and additional apocrine metaplasia, fibroadenoma, intraductal papilloma and focal calcifications were observed in 5, 4, 4 and 1 lesions, retrospectively. (1) Mammography findings: 39 women included irregular nodules (23.1%), asymmetric density (20.5%), structural distortions (20.5%), calcified masses (20.5%) and simple calcifications (7.7%), and no abnormal finding was observed in three cases. (2) 38 patients were examined by ultrasound, 35 were nodules, and 3 had no abnormalities. Most of the lesions were hypoechoic (92.1%), no or a small number of linear blood flow signals (92.1%), the echo was uneven (71.1%), and the boundary was clear (76.3%). (3) 29 patients with SA undergoing MRI, 65.5% were inhomogeneous long T2WI signal; All lesions showed marked enhancement, including 37.9% lesions showed irregular patchy or regional enhancement, 62.1% lesions with mass-like enhancement enhanced (7 star-shaped masses included). For the time intensity curve (TIC), 11 cases were typeⅠ, 16 cases typeⅡ, and 2 cases type Ⅲ, DWI lesions showed slightly higher signal in 16 casea. The misdiagnosis rates of mammography, ultrasound and MRI were 19.4% (10/39), 17.1% (6/35) and 17.2% (5/29), respectively. Combined these three methods, the accuracy were 93.1%. Conclusions: The majority of SA lesions showed nodules or calcification in mammography, ultrasound showed uneven hypoechoic nodules with less or no blood flow, the MRI showed inhomogeneous long T2WI signal, star-shaped mass-like lesions on enhanced. Morphology, time intensity curve and DWI image of lesions may show great value in identification of benign and malignant lesions. Combined these three methods, the diagnostic accuracy of SA can be improved.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[Value of short-tau inversion recovery sequences in the MR imaging diagnosis of polymyositis and dermatomyositis]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.012</link>
<description><![CDATA[Objective: To assess the value of short-tau inversion recovery (STIR) sequence in dermatomyositis (DM) and polymyositis (PM) and investigate its application in clinical practice. Materials and Methods: Twelve patients with a diagnosis of DM/PM were respectively evaluated using clinical examination and muscle biopsy-proved. All the patients were preformed with MRI of their thigh, including the images of T1-weighted imaging (T1WI); T2-weighted imaging (T2WI) and STIR sequences. The abilities of detecting lesions among these sequences were observed and compared. Results: All of included patients were detected abnormal MRI appearances of their thigh muscle, which representing myositis in 11 cases, fasciitis in 8 cases, subcutaneous inflammation in 9 cases, and myoatrophy with fatty infiltration in 1 cases. The STIR sequence discovered all of abnormal lesions; T1WI sequence found 5 cases of subcutaneous inflammation and 1 cases of myoatrophy, but none of myositis or myofasciitis were found; T2WI sequence found 6 cases of myositis, one case of myoatrophy and 2 cases of subcutaneous inflammation, none of myofascitis were found. On the STIR sequence, compared with other bilateral thigh muscle groups, 7 patients showed higher signal intensity on medial and rear thigh muscle groups, had confirmed by pathology that muscle edema were seriously than other groups. Conclusions: With high resolution and high sensitivity of soft tissue, the STIR sequence can significantly improve the detection rate of soft tissue inflammation. The signal intensity can subjectively reflected the degree of muscle damage, and it has important value in clinical practice.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[Progress of functional MR imaging on the monitoring of therapeutic effects of high-grade gliomas]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.014</link>
<description><![CDATA[The current management of high-grade gliomas is complicated and changeable. The standard treatment for HGGs is resection and followed by radiotherapy and oral chemotherapy at present. However, the continuous cranial magnetic resonance imaging (MRI) that differentiates treatment response from treatment effect can be challenging and affects clinical decision-making in later stages. A variety of advanced MRI techniques such as diffusion weighted imaging, perfusion weighted imaging, MR spectroscopy, and multiparametric imaging incorporating novel physiologic and biochemical parameters might provide new methods to help characterize tumor progression, pseudoprogression, and pseudo response. In this review, the latest progresses and challenges regarding MR functional imaging in the area of monitoring the efficacy of HGGs are summarized.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[Magnetic resonance diffusion imaging: Clinical research progress of IVIM and DKI in breast lesions]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.015</link>
<description><![CDATA[Diffusion weighted imaging (DWI) is a technology to reflect the molecular diffusion movement through quantitative water molecular diffusion movement. However the diffusion information from DWI has a certain degree of deviation, in order to more accurately describe the body diffusion movements and microstructure organization, the intravoxel incoherent motion imaging(IVIM) based on the capillary microcirculation perfusion and the diffusion kurtosis imaging(DKI) based on the non-gaussian diffusion is put forward and the relevant clinical application research is the hotspot currently. This article mainly introduce the theoretical basis of IVIM and DKI and the research progresses in breast lesions.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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<title><![CDATA[MRI quantitative research progress of sacroiliac joint changes in patients with ankylosing spondylitis]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2018.02.016</link>
<description><![CDATA[Ankylosing spondylitis (AS) is a systemic connective tissue disease which can invade multiple systems. Its etiology and pathogenesis may be related to genetic, infection, immunity, and resistance. however, all of which lack of clear evidences. Sacroiliac arthritis is the most common, characteristic and diagnostic performance of AS. Owing to the characters of multiple orientations, multiple sequences, multiple parameters and good tissue contrast, magnetic resonance imaging is the first choice for assessing and reviewing AS. In this paper, we will summary the MRI quantitative analysis of sacroiliac joint changes in patients whith AS. The research methods are as follows: diffusion weighted imaging, intravoxel incoherent motion diffusion weighted imaging, dynamic contrast-enhanced MRI.]]></description>
<pubDate>Tue,20 Feb 2018 00:00:00  GMT</pubDate>
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