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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=201911</link>
<language>zh-cn</language>
<copyright>An RSS feed for Chinese Journal of Magnetic Resonance Imaging</copyright>
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<title><![CDATA[The effect of social comparison subjects to regret emotional volatility: a rs-fMRI study]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.001</link>
<description><![CDATA[Objective: The study was used in sequential risk-taking tasks to research the effect of resting-state functional connectivity to regret emotional volatility when facing different social comparison subjects. Materials and Methods: Total thirty-eight health university students took part in the experiment. In the study, participants were told to imagine two different opponents (close friends and strangers) and they would play sequential risk-taking tasks with themselves. Opponent’s outcome would be presented with participant’s own outcome, then participants were supposed to score for regret or relief. Data processing assistant for resting-state fMRI (DPARSF) was used to analyze the resting-state data. We collected and calculated the function connectivity values between insula, orbital frontal cortex and other voxels in the brain. The functional connectivity (FC) values were correlated with regret emotional rating index (emotional volatility) and social comparison scales. Results: In GAIN situation, when participant’s outcome was worse than stranger’s, emotional volatility was negatively correlated with FC between insula and orbital frontal cortex (r=-0.399, P＜0.05), this FC also negatively correlated with participants’social comparability (r=-0.472, P＜0.01). Conclusions: In resting states, the FC between insula and orbital frontal cortex was correlated with social comparability and emotional volatility when facing strangers.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[The relationship between brain injury and cognitive impairment in type 2 diabetes mellitus patients with cerebral small vessel disease]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.002</link>
<description><![CDATA[Objective: To investigate the relationship between brain injury and cognitive impairment in type 2 diabetes mellitus (T2DM) patients with cerebral small vessel disease (CSVD). Materials and Methods: Eighteen T2DM patients with CSVD (T2DM group) and 18 matched healthy subjects (control group) were collected and underwent 3D T1 weighted imaging (3D T1WI) and diffusion tensor imaging (DTI) scans, Mini Mеntal Statе Exam (MMSE) and Mоntrеal Соgnitivе Assеssmеnt (MoCA) were also performed to evaluate their cognitive status. Results: From the morphometric analysis, compared to the control groups, significantly atrophy and thinner cortical thickness were found in  temporal and occipital lobe, and thinner cortical thickness were found in left middle frontal, frontal pole and right insula in T2DM patients. Besides, the reduction of FA value was found in frontal, temporal, occipital, corpus callosum, cingulum, insula, thalamus and hippocampus, and almost the white matter in cerebral were injured, which were accompanied with the increasing of λ∥, λ⊥ and ADC values. Moreover, significantly positive correlation between MoCA scores and FA value in bilateral superior longitudinal fasciculus.Visual spatial execution ability scores and FA value in left anterior thalamic radiation; memory scores and FA value in left cingulum (hippocampus). Conclusions: DTI provides a more effective way to investigate the brain microstructure injury caused by T2DM with CSVD than commonly 3D T1. It can further help to provide early biomarkers for diagnosis of cognitive impairment in T2DM patients with CSVD.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[Functional magnetic resonance imaging study of brain activation area of acupuncture at Fenglong acupoint]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.003</link>
<description><![CDATA[Objective: To investigate the mechanism of acupuncture at the Fenglong acupoint by used Bold-fMRI. Materials and Methods: Sixteen healthy subjects who met the standard were treated with acupuncture at Fenglong point and sham acupoint of the right foot Yang Mingwei meridians respectively, and the fMRI data were collected. DPARSF, statistical parameter diagram (SPM12) and XJVIEW software were used for data preprocessing and statistical analysis. Results: Compared with acupuncture at sham acupoint, the Fenglong acupoint enhanced brain activation area included: right lower frontal gyrus (BA45), superior lobular lobe (BA7), and left inferior parietal lobe (BA40). Weakened brainactivation area included: right margin leaves, thalamus, anterior cingulate gyrus (BA32), frontal gyrus (BA46), posterior cerebellum, left hippocampus (BA35), insula (BA13), anterior cerebellum. Conclusions: Compared with sham acupoint, acupuncture at Fenglong point is relatively specific, and these brain areas are related to cognition, pain management and other functions.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[Application of magnetic resonance HASTE and TRUE-FISP sequences in diagnosis of fetal cleft lip and palate]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.004</link>
<description><![CDATA[Objective: The purpose of this study was to evaluate the value of MRI HASTE and TRUEFISP sequences in diagnosis of cleft lip and cleft palate respectively. Materials and Methods: Half-Fourier single-shot turbo spin echo (HASTE) and true fast imaging with steady-state precession (TRUE-FISP) scanning of 20 pregnant women with cleft lip and palate deformity were analyzed. All images were reviewed by two obstetric MRI diagnosis doctors with 10-year experience. The presence of cleft lip and palate and image quality were scored. Results: Postpartum follow-up results of 20 fetuses showed that 7 were normal fetuses, 3 had cleft lip, 9 had cleft lip and palate, 5 cases occurred on the right side and 4 cases on the left side. The degree of cleft palate was not clear, and 1 had cleft lip and cleft palate. For cleft lip, the diagnostic accuracy of reader 1 in HASTE and TRUE-FISP sequences was 100% and 95% respectively, and that of reader 2 was 95% and 95% respectively. For cleft palate, the diagnostic accuracy of reader 1 in HASTE and TRUE-FISP sequences was 85% and 90% respectively, and that of reader 2 was 85% and 100% respectively. Scanning failure planes: 6 key layers of HASTE sequence were missing. Twelve key scan layers were missing in TRUE-FISP sequence. Conclusions: Coupled with appropriate protocols, MRI scans could evaluate fetal cleft lip and palate with higher accuracy.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[The study of left heart structure and function difference in hypertrophic cardiomyopathy patients with or without atrial fibrillation by MRI]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.005</link>
<description><![CDATA[Objective: To explore the differences of left heart structure and function in hypertrophic cardiomyopathy patients with or without atrial fibrillation using cardiac magnetic resonance imaging, and provide a basis for clinical active treatment. Materials and Methods: Retrospective analysis of 109 hypertrophic cardiomyopathy patients who underwent 1.5 T cardiac magnetic resonance and were diagnosed in our hospital, according to the presence of atrial fibrillation, were divided into atrial fibrillation group (n=21) and non-atrial fibrillation group (n=88), comparing the two groups of patients with magnetic resonance parameters representing left heart structure and function, multivariate logistic regression analysis was performed on the left ventricle statistically significant parameters, to obtain the relevant influencing factors of atrial fibrillation. Results: LAAPD, age, LGE% in hypertrophic cardiomyopathy patients with atrial fibrillation was higher than hypertrophic cardiomyopathy patients without atrial fibrillation (P＜0.05). LVEF and LVPFR in patients with atrial fibrillation was lower than patients without atrial fibrillation (P＜0.05). The other parameters were no significant difference between the two groups (P＞0.05). In multivariate logistic regression analysis, hypertrophic cardiomyopathy patients with atrial fibrillation was associated with LVPFR (P=0.011) and LGE% (P=0.005). Conclusions: The LVPFR and LVEF, age, LAAPD and LGE% are difference in hypertrophic cardiomyopathy patients with or without atrial fibrillation. Inside, LVPFR and LGE% were predictors of hypertrophic cardiomyopathy patients with AF.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[Preliminary study on correlation between gray level co-occurrence matrix texture analysis based on whole tumor volume measurement ADC image and Ki-67 expression in endometrial cancer]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.006</link>
<description><![CDATA[Objective: To explore the correlation between gray level co-occurrence matrix (GLCM) texture analysis based on whole tumor volume measurement ADC images and the expression of Ki-67 in endometrial carcinoma (EC). Materials and Methods: The imaging data of 37 patients with EC confirmed by operation and pathology were retrospectively analyzed. ADC images were obtained after post-processing. According to the Ki-67 expression index of EC (＜50% was low expression, ＞50% was high expression), patients were divided into Ki-67 low expression group (n=17) and Ki-67 high expression group (n=20). Using Omni-Kinetics software, ROI was drawn layer by layer along the edge of the ADC image containing the essence of the tumor. After fusion, the texture parameters of GLCM were obtained, including energy, entropy, inertia, correlation and inverse difference. The difference of GLCM texture parameters between the two groups was compared by independent sample t test (normal distribution) or Mann-Whitney rank sum test (skewed distribution). The ROC curve was used to evaluate the differential diagnostic efficacy of the parameters with statistical difference for the low and high expression groups of Ki-67. Pearson correlation analysis was used to evaluate the correlation between the GLCM parameters and the expression index of Ki-67. Results: The energy and inertia of Ki-67 low expression group were higher than Ki-67 high expression group, and the difference of entropy, correlation and inverse difference were lower than Ki-67 high expression group (P＜0.05). The AUC of energy, entropy, inertia, correlation and inverse difference predicted Ki-67 high expression were 0.724, 0.865, 0.803, 0.809 and 0.847, respectively. The energy and inertia were negatively correlated with Ki-67 expression index of EC (P＜0.05), the entropy, correlation and inverse difference were positively correlated with Ki-67 expression index (P＜0.05). Conclusions: GLCM texture analysis based on whole tumor volume measurement ADC images of is helpful for preoperative evaluation Ki-67 expression of EC. It has certain clinical value and entropy is the best parameter.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[Longitudinal study of somatosensory conduction fiber structure after decompression in patients with cervical spondylotic myelopathy]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.007</link>
<description><![CDATA[Objective:  Diffusion tensor imaging (DTI) technique was used to observe the changes of apparent diffusion coefficient (ADC), anisotropy fraction (FA) and mean diffusion coefficient (MD) of somatosensory conduction fibers before and after decompression in patients with cervical spondylotic myelopathy (CSM), and to explore the basis of structural changes in sensory disorders and postoperative neurological recovery in patients with CSM. Materials and Methods: Twenty-seven patients with preoperative CSM and healthy volunteers matched with age and gender received  MRI scans (DTI data). Twenty-seven patients with CSM underwent the same scan 6 months after surgery, bilateral thalamocortical tracts and spinothalamic tracts (thalamic-middle brain) as a region of interest, independent or paired sample t-test for three sets of ADC, MD and FA values, analysis of changes in FA, MD and ADC values of the conduction beam between groups to reveal the effect of myelin compression and decompression on the sensory conduction fibers at the distal end of the injury. Results: Compared with the healthy control group, the FA values of the thalamocortical tract and the spinothalamic tract were decreased (P＜0.05), and the ADC and MD values of the thalamocortical tract and spinothalamic tract were increased (P＜0.05). After 6 months, the value of FA in the thalamocortical of patients with CSM was lower than that of the preCSM group and the control group (P＜0.05). The FA value of the spinothalamic tract was higher than that of the preCSM group and the control group (P＜0.05). Conclusions: DTI data can quantitatively reflect the degree of secondary injury, which has guiding significance for clinical treatment. CSM can cause secondary and retrograde damage to the thalamocortical tract and spinothalamic tract. The decompression of thalamocortical nerve tracts after decompression is not obvious, but the spinothalamic nerve tracts are remodeled.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[The value of mono-exponential, bi-exponentialandstretched, exponential models in identifying brucellosis spondylitis and spinal tuberculos]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.008</link>
<description><![CDATA[Objective: To compare the value of various parameters obtained from monoexponential, biexponential, andstretched exponential diffusion-weighted imaging (DWI) models in identification ofbrucellosis spondylitis and spinal tuberculosis. Materials and Methods: Retrospective analysis of our hospital from December 2016 to December 2018 of 34 cases of brucellar spondylitis patients with biochemical detection (SAT 1∶100++ or RBPT++), 31 cases of spinal tuberculosis confirmed by tuberculosis culture and surgical pathology, all patients underwent routine MRI examination and multi-DWI scan. ADC, D, D*, f and DDC, values were measured in BSD group and STB group. comparison between groups using independent sample t test or Wilcoxon test, ROC to differentiate the diagnostic efficacy, Correlation test between variables using Pearson test. Results: ADC, D, D*, f, DDC, a were higher in the BSD group than in the STB group, in addition to f all have statistical significance. ADC, D, DDC, D*, a all have higher differential diagnostic performance, the AUC is 0.87, 0.85, 0.76, 0.71, 0.71, respectively, the thresholds are: 0.000889, 0.000664, 0.00106, 0.00309, 0.81. The correlations of ADC, D and DDC in BSD group and STB group were better, the correlation between ADC and DDC was the strongest in BSD and STB groups, the correlation coefficients were 0.81 and 0.89 respectively. Conclusions: ADC calculated from mono-exponential model and D, D* calculated from bi-exponential model and DDC, a calculated from stretched exponential model all have high performance in identifying brucellosis spondylitis and spinal tuberculos, bi-exponential model provides perfusion information and stretched exponential model provides diffusion heterogeneity information. However, the diagnostic performance of the biexponential model and the stretched exponential model is not higher than the traditional monoexponential model, so DWI is still recommended in clinical practice.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[Effect of DRD4 receptor -616 C/G polymorphism on white matter microstructure in normal adolescents, a MRI study using neurite orientation dispersion and density imaging technique]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.009</link>
<description><![CDATA[Objective: To assess the effect of -616 C/G single nucleotide polymorphism (SNP) in the dopamine D4 receptor (DRD4) promoter rs747302 on white matter microstructure in normal adolescents using neurite orientation dispersionand density imaging (NODDI) methodology. Materials and Methods: Genomic and NODDI imaging data were obtained from 179 healthy adolescents. SNP of rs747302 was genotyped. NODDI imaging data were collected uning a 3.0 tesla MR scanner, neurite density index (NDI) and orientation dispersion index (ODI) were calculated and compared between different genotype (C/G) using TBSS software. Results: Differences of NDI and ODI between genotype were found in anterior thalamic radiation (ATR), C allele carriers of rs747302 exhibited lower NDI and high ODI in ATR. Conclusions: Among male adolescents, C-allele carriers of rs747302 were associated lower NDI and high ODI in ATR.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[Research progress of voxel-based morphological measurements in cognitive impairment-related diseases]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.013</link>
<description><![CDATA[Cognitive impairment (CI) refers to abnormalities in information processing and storage in patients' brains, and its incidence is increasing year by year. The main symptoms of CI include memory loss, social and personality disorders, which seriously affects patients' daily work, study and life. With the development of MRI technology, especially the application of voxel-based morhpometry (VBM) technology, the correlation between brain volume changes and cognitive function in patients with cognitive impairment-related diseases has gradually become a hot topic of research, which is important for the clinical prediction of CI. Past research through study of the changes in brain volume during the progression of disease in patients with CI, in order to detect the decline of cognitive function in such patients at an early stage and take measures to delay its progress. And this paper reviewed the research progress of VBM technology in the flied of cognitive impairment related diseases.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[Advances in brain magnetic resonance imaging of suicide attempted depression]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.014</link>
<description><![CDATA[According to the World Health Organization, nearly 800 000 people worldwide die of suicide every year. Mental disease is an important risk factor for suicide, and depression is a serious mental disease associated with high risk of suicide. Previous studies have confirmed that suicide attempt is the most important predictor of suicide in patients with major depressive disorder. With the continuous development of magnetic resonance imaging technology, researchers can deeply explore the pathological mechanism and neuroanatomical abnormalities of suicide attempted depression. In recent years, studies have found abnormal brain structure and function in patients with suicide attempt. This article reviews the research on the etiology and pathogenesis of suicide-attempted depression by various magnetic resonance imaging techniques.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[New progress in the evaluation of ischemic penumbra by magnetic resonance imaging]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.015</link>
<description><![CDATA[Ischemic penumbra is significantly related to the therapeutic effect of reperfusion on ischemic stroke caused by acute cerebrovascular occlusion. Therefore, the correct evaluation of ischemic penumbra plays a decisive role in the formulation and outcome of clinical treatment decisions of patients with ischemic stroke, and can be used as a reliable basis for expanding the time window of thrombolytic therapy. Magnetic resonance imaging (MRI) can provide information on diffusion, perfusion and cell metabolism of ischemic brain tissue, which is very important for the evaluation, follow-up treatment and prognosis of ischemic penumbra.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[The research progress of intravoxel incoherent motion MRI in head and neck cancers]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.016</link>
<description><![CDATA[Intravoxel incoherent motion diffusion-weighted imaging (IVIM-DWI) is an emerging magnetic resonance examination technique in recent years, which can simultaneously obtain tissue diffusion and perfusion information.By quantitative measurement of IVIM derived parameters (D, D* and f), differential diagnosis of benign and malignant tumors can be made. This article aims to review the principles of IVIM and its application in head and neck cancers.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[The application progress of magnetic resonance future tracking technique to evaluate myocardial strain]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.017</link>
<description><![CDATA[Cardiac magnetic resonance feature tracking technology is a new technique for non-invasive measurement of myocardial strain through post-processing software based on cardiac magnetic resonance cine sequence images. This technique is simple and convenient to operate, no extra sequence scanning is needed, and it has good repeatability. Myocardial strain refers to the deformability of myocardial fibers under tension, which can quantitatively evaluate the overall and local motor function of the myocardium. At present, cardiac magnetic resonance feature tracking technology has a very rapid development in the research of myocardial strain, and this paper reviews the basic principle, clinical application and prospect of this technique.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[The inflammatory mechanism of pancreatic cancer and its theranostic significance]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.018</link>
<description><![CDATA[It is well known that pancreatic ductal adeno-carcinoma (PDAC) is a highly aggressive malignancy with very poor prognosis, and most were first diagnosed with local advancement or metastasis. Considering its poor response to traditional chemotherapy and radiotherapy, it is crucial that the patients can be diagnosed and treated at an early stage. Inflammation has a tight relationship with tumorigenesis and tumor progression, and chronic aseptic inflammation of pancreas is one of the most important risk factors of pancreatic cancer. As nanotechnology shows great promise against malignant diseases like pancreatic cancer, more and more researches were conducted to exploit the characteristics of nanocarriers for their application in both diagnosis and treatment of malignancies. In this review, we summarize the role of inflammation in PDAC and its significance to both diagnostic and therapeutic strategies.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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<title><![CDATA[Advances in neuroimaging of inflammatory bowel disease]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2019.11.019</link>
<description><![CDATA[Inflammatory bowel disease is a kind of chronic and recurrent intestinal inflammatory disease with a tendency of lifelong recurrence, which has a variety etiologies. In addition to the known extraintestinal symptoms, such as arthritis and iritis, some studies have pointed out that inflammatory bowel disease patients also have nervous system involvement, and this may be another extraintestinal manifestation. Preliminary research findings have been obtained in the study of brain structure and function in patients with inflammatory bowel disease by using magnetic resonance imaging (MRI). Therefore, the purpose of this article is to review the current research progress in the field of neuroimaging of inflammatory bowel disease.]]></description>
<pubDate>Wed,20 Nov 2019 00:00:00  GMT</pubDate>
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