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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=201607</link>
<language>zh-cn</language>
<copyright>An RSS feed for Chinese Journal of Magnetic Resonance Imaging</copyright>
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<title><![CDATA[A study of acupuncture Dazhong and Taixi acupointsbased on fMRI]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.001</link>
<description><![CDATA[Objective: Using functional magnetic resonance imaging to observe the brain blood oxygen level dependent signal change by acupuncturing the right side of kidney channel of foot shaoyin Dazhong and Taixi acupoints, to explore the relationship between efficacy and activate brain areas. To observe the brain blood oxygen level dependent signal change by acupuncturing the right side of kidney channel of foot shaoyin Dazhong and Taixi acupoints based on blood oxygen level dependent functional magnetic resonance imaging, and to explore the relationship between efficacy and activate brain areas. Materials and Methods: Using 3.0 T dual-source double gradient magnetic resonance to collect the Bold signal data of 14 healthy volunteers who were acupunctured the right side of kidney channel of foot shaoyin Dazhong and Taixi acupoints, then using SPM12 (statistical parametric mapping) to process data and statistical analysis. Results: The active cerebral areas by acupuncturing Dazhong and Taixi acupoints include: The left frontal lobe, left medial frontal gyrus (Ba44), left inferior frontal gyrus and right insula (Ba13), right frontal, right cerebellum anterior lobe, right thalamus, right cerebellar lobe, right parietal lobe(Ba22), right posteriorcentral gyrus (Ba4), deactivate brain regions include: The left side of the midbrain, the right side Limbic lobe and hippocampus (Ba17). Conclusion: Acupuncture Dazhong and Taixi acupoints can  cause  the  relative  specificity  reaction helpful to early diagnosis and condition evaluation. specificity reaction of brain central nervous. Its curative effect is closely associated with the limbic system especially the thalamic activation.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[The diagnosis and prognosis of the fetal nervous system abnormalities by the ultrasound combined with MRI]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.002</link>
<description><![CDATA[Objective: To investigate the diagnosis values of the fetal nervous system abnormalities by the ultrasound combined with MRI and analysis the relevant prognosis.  Materials and Methods: From february 2011 to january 2015, selected 28 cases of fetal central nervous system abnormalities ultrasonic tips or suspicious abnormalities in pregnant women in our hospital, all the pregnant women were given the both ultrasound and MRI for diagnosis and to investigate the situation on the prognosis. Results:  By the ultrasound diagnosis, there were 20 cases of tips fossa abnormalities (which 16 cases with cisterna widened, 2 cases with Dandy-walker malformation, 2 cases with cerebellar hypoplasia). Four case with cystic intracranial space-occupying four cases, 3 cases with microcephaly, 1 case with septum cavity abnormal. By the MRI diagnosis, there were 4 cases with normal fetal nervous system, 19 cases of tips fossa abnormalities (which 15 cases with cisterna widened, 2 cases with Dandy-walker malformation, 2 cases with cerebellar hypoplasia). Three case with cystic intracranial space-occupying four cases, 2 cases with microcephaly. Through investigation and followed-up contrast, The ultrasound diagnosis consistent rates was 78.6%, so that were 100.0% by the MRI diagnosis that compared were significantly difference (P<0.05). Twenty-eight cases of 19 cases of normal birth, 7 cases were abortion , 2 cases of fetal death. Conclusion:  Relative to the ultrasound, MRI of the fetal nervous system abnormalities has better consistent rates of diagnosis, prognosis is conducive to both joint use is important basis for the clinician to determine the treatment program.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Findings in magnetic resonance vessel wall imaging of basilar artery dissecting aneurysm]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.003</link>
<description><![CDATA[Objective: To evaluate the manifestations of basilar artery dissecting aneurysm on magnetic resonance vessel wall imaging.  Materials and Methods: Twenty-seven cases of basilar artery dissecting aneurysm were examined by magnetic resonance vessel wall imaging. Results:  Basilar artery dissecting aneurysm included vascular circuity expansion, intramural hematoma, intimal flap sign, double lumen sign, long irregular or thread-like stenosis, rat tail-shaped occlusion. Conclusion: Vascular circuity expansion, intramural hematoma, intimal flap sign, double lumen sign, long irregular or thread-like stenosis, rat tail-shaped occlusion can be identified on magnetic resonance vessel wall imaging in patients with basilar artery dissecting aneurysm. Magnetic resonance vessel wall imaging is a good examine method of basilar artery dissecting aneurysm.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[The diagnose of MRI in Wernicke encephalopathy after abdominal operation]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.004</link>
<description><![CDATA[Objective: To investigate the clinical and MRI characteristics of Wernicke encephalopathy after abdominal operation, in order to improve the understanding and diagnostic level of it.  Materials and Methods: Retrospectively analyzed the collected clinical and imaging data of four nonalcoholic Wernicke encephalopathy patients after abdominal operation and reviewed the reference literature. Results:  Two of the four patients were lethargy, one patient showed spiritual apathy, another one patient performed as listlessness and lacking language and movement. All of the four patients were underwent MR imaging which showed that the symmetric lesions located in the medial thalamus, periventricular region of the third ventricle and the periaqueductal grey matter. Their signals were symmetric slight hyperintensity on T2-weighted images, fluid-attenuated inversion recovery (FLAIR) images and hypointensity on T1-weighted images. Some lesions also showed slight hyperintensity or hyperintensity in DWI images. One patient was performed contrast enhanced scan, but the lesions were not obviously enhanced. Conclusions:  The MR signals of nonalcoholic Wernicke encephalopathy had certain specificity, and the clinical manifestation combined with brain MRI examination will be helpful to diagnose of it.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[The value of the phase map sequence of ESWAN to diagnose ovarian endometriosis]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.005</link>
<description><![CDATA[Objective: To investigate the diagnostic ability of the phase map of enhanced T2* weighted angiography (ESWAN) in diagnosis of ovarian endometrial cyst.  Materials and Methods: This study was approved by the ethics committee of our hospital. A retrospective analysis was performed on 68 cases (80 lesions) pathologically-proven ovarian cystic lesions with pelvic MRI examination (T1WI, T2WI, LAVA and ESWAN sequence). Group A was endometrial cyst (n=42), Group B was ovary pyosalpinx and hydrosalpinx (n=14), Group C were other ovarian cystic lesions (n=24). The morphological characteristics were observed whether there are rings hyperintense outside and hypointense inside and hemorrhagic introtumoral susceptibility signal intensity (ITSS) in the phase image. The above characteristics were compared by Chi-square test or the Fisher exact probabilities. The Logistic regression was used to analyze the combination diagnostic efficacy. The diagnostic efficacy was compared by ROC curve and Wilcoxon test.  Results:  The lesions with the ring that hyperintense outside and hypointense inside or with hemorrhagic ITSS along the wall in phase image of group A were more than that in group B and C (P＜0.001), and there was no difference between group B and C (P value were 0.319 and 0.240 ). Then the best combination were lesion with the ring that hyperintense outside and hypointense and hemorrhagic ITSS inside wall in the phase image (AUC was 0.960). Conclusios:  The Combination of observing the ring hyperintense outside and hypointense inside and hemorrhagic ITSS in phase image was best in diagnosing ovarian endometrial cysts.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Uterine peristalsis evaluated in menorrhagia fibroid patients by cine magnetic resonance imaging]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.006</link>
<description><![CDATA[Objective: To evaluate uterine peristalsis in menorrhagia fibroid patients by cine magnetic resonance imaging and to investigate the possible influence of leiomyoma locations on uterine peristalsis.  Materials and Methods: Thirty menorrhagia fibroid patients and 30 healthy volunteers participated in this study. MR imaging of uterus in axis T1, axis T2-stir and sagittal T2 and cine MRI were prospectively performed with a 1.5 T scanner during the peri-ovulatory phase.  The presence and frequency of normal peristalsis were compared between healthy volunteers and fibroid patients. The relationships between the locations of fibroids and the types of peristalsis were also analyzed. Results:  The presence and frequency of normal peristalsis were significantly decreased in menorrhagia fibroid patients compared to healthy volunteers (P< 0.01). Menorrhagia fibroid patients showed a variety of types of peristalsis and patients with submucosal showed no peristalsis. Conclusion:  In menorrhagia fibroid patients, the presence of normal peristalsis is significantly decreased, which is not conducive to the rapid transport of sperm to the fallopian tubes. Cine MRI can facilitate evaluation of uterine peristalsis in menorrhagia fibroid patients and provide useful functional information of uterine peristalsis for clinic.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[The diagnosis value of 3.0 tesila MRI on cystic-solid masses of appendix and the misdiagnosis reason anaiysis]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.007</link>
<description><![CDATA[Objective: To discuss the value of 3.0 tesila MRI in the diagnosis of cystic-solid masses of appendix. And, to analyse the causes of misdiagnosis of common accessories lesions like mature ovarian cystic teratoma, endometrisis cysts, cystadenoma, borderline cystadenoma and ovarian canner. Materials and Methods: A total of 125 lesions were collected in this study, all lesions were diagnosed as cystic-solid masses of appendix by postoperative pathology. The MRI manifestations were analyzed retrospectively, and the causes of misdiagnosis were summarized. Results: There were 84 benign lesions, 25 borderline lesions, and 16 maglignant lesions. Among all of the lesions, there were 104 lesions (83.2%) were diagnosed accurately by MRI, 21 lesions (16.8%) were misdiagnosed. Thirteen in 16 maglignant lesions of MRI staging were coincide well with pathological staging, however, 3 lesions of MRI staging was lighter than pathological staging. The ADC value was statistically significant among  benign (1.325×10-3 mm/s), borderline (1.081×10-3 mm/s) and malignant lesions (0.928×10-3 mm/s) groups (P＜0.05).  Conclusions: Although benign and malignant (especially the borderline) cystic-solid lesions of appendix on MRI have certain overlap, the diagnostive value for cystic-solid masses of appendix on 3.0 tesila MR was high. Some of the  cystic-solid lesions have particular characteristics in MR imagings. To analyse and summarize the reasons for misdiagnosed cases could be useful for improving the accuracy of diagnosis.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Evaluation of microstructure remodeling after myocardial infarction using 3.0 T magnetic resonance imaging]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.008</link>
<description><![CDATA[Objective: To detect myocardial microstructure remodeling dynamically in the core-infarction zone (CIZ), peri-infarction zone (PIZ) and non-infarction zone (NIZ) using 3.0 T diffusion tensor imaging, so as to find out the ventricular remodeling (VR) mechanism and heterogeneity.  Materials and Methods: Fifty adult male rabbits were split into a normal group (n=5), a sham-operation group (n=5), and a myocardial infarction (MI) group (n=40), the MI group was further split into 5 subgroups at 1, 2, 4, 8 weeks, and 16 weeks after operation, while 33 survived and 7 died. The rabbit MI model was established by ligating the left ventricular branch of the coronary artery. The vitro heart specimens were gained to proceed the 3.0 T DTI. Fractional anisotropy (FA) and mean diffusion (MD) coefficient values were measured in the CIZ, PIZ and NIZ. DTI indicators were monitored dynamically. Results: (1)Both the FA values of the CIZ and PIZ significantly decreased in the 1st week, then decreased slowly, both reached the lowest values at the 4th week. Then the FA of the CIZ tended to be stable, while in the PIZ, they appeared a small increase and became stable at the 8th week. (2)The MD values in the CIZ increased rapidly and dramatically in the 4th week after operation, while those in the PIZ increased slowly and gradually, both reaching the peak at the 4th week synchronously. Subsequently, the MD of the CIZ stayed stable until the 8th week, then decreased slightly at the 16th week. The MD of the PIZ decreased slowly and became stable at the 8th week.  Conclusions: Ventricular remodeling after myocardial infarction was a complex and dynamic process, the CIZ and PIZ remodeled very quickly and obviously in the 1st week, and reached the peak at the 4th week, which meant the tissue destruction was the most serious, then remodeling stayed stable until the 8th week. DTI can reveal the remodeling regularity in different areas and play an important role on the guidance for clinical treatment.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Analysis on faults of Siemens Skyra 3.0 T MRI system: report of 2 case]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.009</link>
<description><![CDATA[Siemens Skyra 3.0 T magnetic resonance (MR) is a new type superconducting MRI machine. It has many system including radio frequency system (RF). data reconstruction. Gradient. Cold-water machine, and so on. In order to ensure the equipment normal scan, each system must be functioning properly. The cold-water machine and RF system malfunction caused by lack of Machine based fault cognitive knowledge or Improper maintenance of machine, which may result in MR was forced to stop working. With two cases of Siemens Skyra 3.0 T MR failure as an example, describe the phenomenon, analyse the cause of the problem, discuss the maintenance method, sum up experience for the peer. As the equipment operator, to improve equipment maintenance level and reduce the failure rate are the skills an MRI technician should be have.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Imaging of IgG4-related disease: current situation and update]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.010</link>
<description><![CDATA[IgG4-related disease (IgG4-RD) is a chronic inflammatory disorder which could involve almost any organ of the body. Most lesions of IgG4-RD respond well to glucocorticoids and the prognoses are relatively good. However, some patients with IgG4-RD would be misdiagnosed as malignant or infectious disorders from time to time in the clinic due to lack of enough recognition for the disease. In order to obtain a better umderstanding of the disease and improve the diagnostic accuracy, here we summarized the common clinical and imaging features of IgG4-RD, and reviewed the latest research progress in the literature.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Research progress of diffusion spectrum imaging]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.011</link>
<description><![CDATA[Scientific studies showed that many areas in human brains contain fiber tracts running along multiple different directions, and the general average diffusion of water molecules within the image voxles of such areas does not statistically follow Gaussian distribution. Therefore, the model of diffusion tensor that hypothesizes a single fiber orientation is intrinsically defective in revealing the microstructures of brain tissues. Diffusion spectrum imaging (DSI) employs pulse sequences using multiple b-values along multiple gradient directions, sampling diffusion information of water molecules in the entire q-space, and quantitatively estimates water diffusion using a probability density function of high angular resolution diffusion imaging. DSI thus can reliably observe fibers running along multiple directions within any voxel in the image, which subsequently allows fiber tracking along different directions, leading to improved reconstruction reflecting true but complicated tissue structures in reality. This article aims to conduct a comprehensive survey of literatures published in recent years in the domain of DSI research, providing a summary on its fundamental principles, methodology, applications and important progresses, which may hopefully help promote the development of DSI in China in both research and clinical studies.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Cardiac MR imaging: 2015 review and future direction]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.012</link>
<description><![CDATA[Cardiac magnetic resonance (CMR) is recognized as the gold standard for the evaluation of cardiac function. The general CMR is quite mature and plays an important role in diagnosis and prognosis of disease. Recently, quantitative cardiac imaging (T1 mapping, T2 mapping, feature tracking, 4D Flow, DTI) and non-contrast cardiac imaging (whole heart MR coronary angiography, ASL) have made a spurt of progress. These technologyies applications may become a new strategy to help diagnose and differential diagnose cardiovascular diseases.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Application and advances of IVIM-DWI in abdomen]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.013</link>
<description><![CDATA[Concept of intravoxel incoherent motion imaging (IVIM) has demonstrated that the diffusion-weighted signal can be influenced not only by molecular diffusion but also by microcirculation. It allows a more comprehensive analysis of datas of diffusion-weighted imaging (DWI). Recent years, IVIM has been gradually used in clinical study. The research of IVIM in abdominal organs is more and more, mainly involving areas such as liver, pancreas and kidney and so on. This article aims to review the latest research advances of IVIM-DWI in abdomen.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[The application research progress of DWI and DCE-MRI in ovarian tumors]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.014</link>
<description><![CDATA[Ovarian cancer is one of the common diseases that harm to women's health. Definined exactly the benign or malignant of tumors is particularly critical of the formulate of patients treatment and prognosis. Magnetic resonance imaging (MRI) is an effective inspection method to observation of ovarian tumors and can assist the qualitative diagnosis. Among them, the diffusion weighted imaging (DWI) and dynamic contrast enhanced MRI (DCE-MRI) with its own advantage is gradually applied to tumor study. Reserach progresses of DWI and DCE-MRI in ovarian tumors progress were reviewed in this article.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Principles and reconstruction methods of spatiotemporally encoded single-shot MRI]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.07.015</link>
<description><![CDATA[In recent years, single-shotmagnetic resonance imaging (MRI) has been widely used in biomedicine, such as diffusion imaging, functional imaging, and real-time three-dimensional imaging, owing to its excellent temporal resolution. Among single-shot MRI approaches echo-planar imaging (EPI) stands out most. However, EPI still faces several limitations, particularly as a result of field inhomogeneity and of chemical shift effects that can become severein high fields. A novel single-shot MRI method was proposed based on spatiotemporal encoding, which provides a way to effectively alleviate the effects of field inhomogeneity and chemical shift while retaining high temporal-resolution character. In this work, we will review the principles and characters of spatiotemporally encoded MRI, and introduce the corresponding super-resolved reconstruction methods. In addition, we will present some major applications of spatiotemporally encoded MRI in biomedicine.]]></description>
<pubDate>Wed,20 Jul 2016 00:00:00  GMT</pubDate>
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