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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=201306</link>
<language>zh-cn</language>
<copyright>An RSS feed for Chinese Journal of Magnetic Resonance Imaging</copyright>
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<title><![CDATA[Display of 3.0 T magnetic resonance in normal pancreatic direct supplying arteries]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.001</link>
<description><![CDATA[Objective: Evaluate liver acquisition with volume acceleration (LAVA) dynamic enhanced magnetic resonance angiography in displaying normal pancreatic direct supplying arteries.  Materials and Methods: 35 patients without pancreatic diseases were performed Gd-DTPA LAVA dynamic enhanced magnetic resonance angiography. The raw data of arterial phase was reconstructed to display the pancreatic arteries by multiple planar reconstruction. The visualization of the pancreatic direct supplying arteries was noted. Results: The detection rate of  anterior superior pancreaticoduodenal artery: 94.3%. The detection rate of posterior superior pancreaticoduodenal artery: 54.2%. The detection rate of aterior inferior pancreaticoduodenal artery: 40.0%. The detection rate of posterior inferior pancreaticoduodenal artery: 51.4%. The detection rate of dorsal pancreatic artery: 51.4%. The detection rate of artery pancreatic magna: 68.6%. The detection rate of transverse pancreatic artery: 48.6%. The detection rate of caudal pancreatic artery: 40.0%. Conclusion: The pancreatic direct supplying arteries can be displaying with satisfaction by Gd-DTPA LAVA dynamic enhanced MRA.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[MR enterography with oral isosmotic mannitol]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.002</link>
<description><![CDATA[Objective: To discuss the method and diagnostic value of MR entero-graphy with oral isosmotic mannitol. Materials and Methods: Twenty-six patients with suspected small bowel disease received MR enterography. All patients ingested 1500 ml of 2.5% isosmotic mannitol solution in succession as intraluminal contrast media and received 20 mg of IV anisodamine to reduce small-bowel peristalsis before MR scan. MRI sequences included: fat-saturated unenhanced coronal T2-weighted single-shot FSE (SSFSE), T1 weighted coronal fast spoiled gradient echo (FSPGR) and enhanced coronal and axial FSPGR. The side effects were recorded and the image quality was graded as bad, good and excellent. Comparison of the results between MR enterography and surgery, pathology or clinic was performed. Results: MR enterography was well tolerated by all patients. No side effect occured except 2 patients had mild nausea during the examination. Good or excellent filling and distension were obtained in ileum and distal jejunum in 26 patients (100%) and in proximal jejunum in 22 patients (85%), and bad filling and distension in proximal jejunum in the other 4 patients (15%). All image quality was excellent because of no breathing artifact and bowel peristaltic artifact in all patients and mild sensibility artifact in 2 patients. The final clinical diagnosis was normal small bowel in 12 patients, Crohn disease in 7, bowel obstruction (caused by adhesion), duodenal carcinoma, multiple gastro intestinal stroma tumor (GIST), duodenitis, duodenocolic fistula, jejunal capillary telangietasia and small intestinal malrotation in 1 patient, respectively. No abnormality was found in 1 intestinal capillary telangietasia, the other diagnosis of MR enterography was coincident with the final clinical diagnosis, and the diagnostic accuracy was 96%. Conclusion: MR enterography with oral isosmotic mannitol is a feasible and dependable method to diagnose small bowel disease, especially Crohn disease, tumor and obstruction.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[High-resolution MRI study of middle cerebral artery stenosis rate differences in infarct and TIA patients]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.003</link>
<description><![CDATA[Objective: To investigate the stenosis rate differences of atherosclerotic middle cerebral artery (MCA) between cerebral infarct and TIA patients with high-resolution magnetic resonance imaging (HR MRI). Materials and Methods: Ninety-one consecutive patients with symptomatic atherosclerotic stenosis at M1 segment of MCA on MRA or DSA were enrolled from April 2011 to April 2013. HRMRI was performed on the target segment by using a 3.0 T MR scanner. Stenosis rate was calculated as vessel area at maximal lumen narrowing/reference vessel area. Diffusion weighted imaging (DWI), T2WI and dark-fluid sequences were performed to make sure if infarct occurred. Results: Seventy-eight patients were included in the final analysis, including 46 patients with infarct, the stenosis of which is 0.72±0.21, and 32 patients with TIA, the stenosis rate 0.72±0.20. The rate difference between patients with infarct and TIA was not statistically significant (t=-0.10, P>0.05). Conclusions: The stenosis rates of M1 segment of MCA in patients with infarct and TIA have no difference, suggesting that the stenosis rate of M1 segment of MCA is not the determining factor of infarction.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[Study on memory function impairment and structural MRI in posttraumatic stress disorder]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.004</link>
<description><![CDATA[Objective: Study on memory function impairment and structural MRI in posttraumatic stress disorder. To provide a reliable basis for clinical improvement in patients with clinical diagnosis and treatment of such.  Materials and Methods: Selected for the study group and the control group 16 cases each, memory function evaluation, and give the magnetic resonance imaging examination, assessment results, two groups were recorded in memory function magnetic resonance examination results, give statistical analysis, draw the conclusion.  Results: The understanding of memory, understanding, memory, visual reproduction delay delay visual reproduction scores were significantly lower than that of the control group of healthy people, and P<0.05 in patients with stress disorder after trauma research group, two groups of patients the results with statistical significance, the study group patients by MRI examination shows, the brain frontal and temporal lobe brain gray matter volume was significantly smaller than that of the control group healthy people.  Conclusions: Clinicians according to post-traumatic stress disorder symptom is memory impairment in patients with frontal lobe of the brain gray matter volume and temporal lobe brain regions were significantly lower than healthy people this trait, to severe posttraumatic stress disorder in patients with brain MRI examination, to determine whether memory impairment, and judge the clinical treatment effect.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[The application value of whole body diffusion-weighted imaging in tumor lesions]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.005</link>
<description><![CDATA[Objective: To investigate the clinical value of whole body diffusion-weighted imaging (WB-DWI) in discovery of malignant primary tumor and metastasis, assessment of tumor response to neoadjuvant therapy and postoperative follow-up. Materials and Methods: Fiber magnetic resonance scanner(GE Optimal 360 1.5 T, US) and short T1 inversion recovery echo-planar imaging diffusion weighted sequence (STIR-EPI-DWI) and body coil were used to obtain the WB-DWI for  7 volunteers and 70 diagnosed or suspected cancer patients. Meanwhile, all axial DWI and corresponding ADC figure with the same layer were collected. Then, the WB-DWI images were reconstructed using the three-dimensional maximum intensity projection(MIP) and inverted-gray-scale with AW 4.5 Functool DWI post processing software and images similar to PET images can be achieved. All WB-DWI images were compared with conventional MRI scanning. Results: High quality WB-DWI images were obtained for 7 volunteers and 70 patients. The primary tumor and metastatic lesions showed high signal on DWI images and low signal on ADC figures, and malignant lesions were not found in volunteers. Twelve cases in 30 patients who intended to assess distant metastases before therapy were detected metastases. Eleven cases in 70 patients who planned to evaluate tumor and metastases response to neoadjuvant therapy, within which 6 cases reduced in size, 1 case even achieved clinical remission, while 3 cases increased and 2 cases had no change. Twenty-eight cases conducted follow-up after comprehensive treatment, 16 cases without local recurrence and metastases, 5 with local recurrence, and 7 were found metastases. One patient with massive ascites took an examination and found abnormal high signal between right thigh muscle groups, confirmed by pathology hemangioma. Conclusions: WB-DWI can provide acceptable earlier and comparable efficacy guiding significance for tumor diagnosing, staging, and prognosing, therapeutic evaluation, which is more sensitive in detecting primary lesion and metastases. Compared with PET-CT, there is no radiation, without injection of contrast agent, and WB-DWI is more convenient and economic, so it is more suitable for cancer patients to evaluate response to neoadjuvant therapy and take long-term follow-up after operation and tumor screening of healthy crowd.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[VISTA-sequence magnetic resonance imaging evaluation of scoliosis]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.006</link>
<description><![CDATA[Objective: To assess the value of MR volumetric isotropic T2-weighted acquisition (VISTA) in evaluating scoliosis. Materials and Methods: VISTA images were obtained from 30 patients with scoliosis using a 1.5 T superconduct scanner and phase-array whole-spine coil. The segmentedly acquired source data of the spine were postprocessed to create the panoramic images with curved multi-planar reconstruction (cMPR) after seamless splicing. An overall perspective of the spine and spinal cord was showed in the panoramic images, which were scored as grade I, grade II, or grade III based on the provided diagnostic information quality (DIQ). Results: The DIQ was graded III in all the 30 patients based on the VISTA-cMPR images. The perspective of the whole spine and spinal cord was visualized in the all the 30 cases, 23 of which were “S”shaped scoliosis of the whole spine, 3 of cervicothoracic scoliosis, 3 of thoraco-lumbar scoliosis, and 1 of lumbar scoliosis with segment. Of the 30 cases, hemivertebrae deformity was identified in 3, Chiari malformation in 4, syringomyelia in 8, tethered syndrome in 3, and hemangioblastoma and astrocytoma in cervico-thoracic cord in 1, respectively. The panoramic findings of the scoliosis on both vertebral and spinal cord anomalies were surgically proved. The DIQ grading among the 30 patients was I in 26, II in 3, and III in 1, respectively, based on the conventional MRI . The difference of independent test between conventional MRI and VISTA-cMPR was statistically significant (χ2=28.06, P<0.01). Conclusion: MR-VISTA plays a vital role in both the diagnosis and pre-surgical evaluation of scoliosis.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[Study of Gd-DTPA labeled bone marrow mesenchymal stem cells in vitro with 7.0 T MRI]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.007</link>
<description><![CDATA[Objective: The aim of this study was to explore the possibility of the rat bone mesenchymal stem cells (BMSCs) labeled with standard contrast agents (Gd-DTPA) for stem cell tracking. Materials and Methods: BMSCs from bilateral femur of rats were cultured and propagated. The BMSCs uptaked Gd-DTPA. Electron microscopy was performed to detect the distribution of Gd-DTPA particles in BMSCs. Viability and proliferation of labeled BMSCs were evaluated using trypan blue exclusion assays and MTT assay. Labeled BMSCs were detected with T1-weighed MR imaging in vitro. Results: The presence of Gd-DTPA particles inside the BMSCs was definitely detected by transmission electron microscopy. There was no difference in viability and proliferation between the labeled and unlabeled cells. The labeled BMSCs demonstrated the high signal intensity on T1-weighted MRI in vitro. Conclusion: Gd-DTPA shows no evident adverse effect on the function of labeled BMSCs. Gd-DTPA can be used for the MR imaging tracking of labeled BMSCs.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[9.4 T MR spectroscopy detection of mesenchymal stem cells into osteoblasts metabolism characteristics]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.008</link>
<description><![CDATA[Objective: To explore the metabolite profile of mesenchymal stem cells (MSCs) underwent osteogenic differentiation using 9.4 T high resolution MR spectroscopy. Materials and Methods: Human umbilical cord mesenchymal stem cells were cultured and collected. MSCs were induced osteogenic differentiation for 2 weeks and cell metabolite extractions were prepared by methanol-chloroform (M/C) method. Cell extractions were then analyzed on a 9.4 T MRS device. Results: After osteogenic inducement, the fatty acid metabolite peak at 2.02 ppm and 2.25 ppm obviously decreased, and there appeared a new metabolite peak at about 1.77 ppm, which is most probably representative of leucine. Conclusions: There are some specific characteristics on MRS of MSCs underwent osteogenic differentiation. The new arised peak at 1.77 ppm may serve as the biomarker for mesenchymal stem cells osteogenic differentiation.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[Magnetic resonance imaging quality control and parameter optimization]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.009</link>
<description><![CDATA[Magnetic resonance imaging is a multiple parameter imaging examination technology, Its principle is complex, Quality control is conditioned by many factors. In practice, with MRI imaging principle, imaging parameters on the basis of the characteristics and the relations among each other, In order to obtain high quality magnetic resonance image for the purpose of parameter optimization. On the hardware installation, commissioning, Ensure all parameters are within the scope of the qualified. On the scanning technology, The various imaging parameters optimization, portfolio, flexible application. In a relatively short time get the high quality magnetic resonance imaging examination. Provide scientific basis for the diagnosis of the disease.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[The concept of human-friendly MRI system and its realization in MAGNETOM Spectra product]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.010</link>
<description><![CDATA[The concept of human-friendly MRI system design has been discussed, a summary of its realization in Siemens MAGNETOM Spectra product has also been provided.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[Cardiovascular magnetic resonance imaging: Part III——The clinical applications of cardiovascular magnetic resonance]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.012</link>
<description><![CDATA[This article is the third section. Following the physics behind the magnetic resonance phenomenon and the progress of image generating in first section, and basic sequences and common used techniques of cardiovascular magnetic resonance in second section, the various clinical applications of CMR imaging were summarized in this section.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[Research progress of magnetic resonance imaging in Parkinson disease]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.013</link>
<description><![CDATA[Excessive iron accumulation in the brain has been suggested to be a kind of potent toxin, which can initiate and propagate the production of free radicals. leading to lipid peroxidation in Parkinson disease. MR, especially with the use of T2 or T2* sequences including susceptibility weighted imaging (SWI), is an effective method to detect and measure brain iron. The effect of MR on detecting brain iron and abnormal deposition of iron in the brain with PD was reviewed in this article.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[The research status and advance of functional MRI in amblyopia]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.014</link>
<description><![CDATA[The fMRI not only can imaginate in human's brain tissue but also may reflect the functional activitiy of the certain region intuitively and without invation,so it developed rapidly in the study of the amblyopia. The Bold-fMRI can analyse the relationship between the transform of cortex funtion and visual impairment. DTI had offered the three-dimensional imagination of the brain white matter and neural pathway which the conventional MRI can't obtain. We can analyse the functional characteristics of nomal brain grey and white matter with several kinds of fMRI and study the function division of visual cortex,the functional impairment of cortex and the associated white cortex changement.This progress has provided useful mentality of discussing the functional lesion of primary and advanced visual cortex and the complicated neuropathology mechanism of connetion anomaly in visual pathway. This had offered useful reference in clinical diagnosis, treatment monitoring and prognosis.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[The research status of mucoid degeneration in anterior cruciate ligament]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.015</link>
<description><![CDATA[Mucoid degeneration of the anterior cruciate ligament (ACL) is a less understood entity, it may cause the knee pain or motion deficit and have characteristics on MRI, but it’s often confused with a diagnosis of ACL rupture or intraligamentous ganglia. In this review, we summarize the epidemiology, clinical manifestations, pathogenesis, MRI features and diffrerntial diagnosis of this lesion.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[Clinical application and advancement of small-bowel MRI]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.016</link>
<description><![CDATA[Evaluation of small-bowel disease need increasingly multiple imaging techniques with the development of medical imaging. Conventional enterography and CT have both advantages and disadvantages. Owing to its no X-ray radiation, no iodic allergic response and excellent soft-tissue contrast, as well as the rapid development of software and hardware, which makes high resolution of image and overcomes artifacts of breath and bowel peristalsis, MRI is used to evaluate small—bowel disease more and more frequently. So the examination techniques, common scan sequences, intraluminal contrast medium and clinical application of small-bowel MRI are reviewed in this article so that we have a knowledge of the diagnostic value of smallbowel MRI and its tendency in the future.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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<title><![CDATA[Application of magnetic resonance imaging in evaluating the response to neoadjuvant chemotherapy in breast cancer]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2013.06.017</link>
<description><![CDATA[With the increasingly morbidity and mortality associated with breast cancer, neoadjuvant chemotherapy has become an essential part of combination therapy for patients with breast cancer. MRI could show the tumor size and margin clearly. Furthermore, functional MRI technology, including DCE-MRI, DWI, PWI and MRS, could early predict the response to neoadjuvant chemotherapy before the tumor morphology changes. It provided an important reference for optimal chemotherapy program. This review focuses on the role of MRI in predicting the efficacy of neoadjuvant chemotherapy for breast cancer.]]></description>
<pubDate>Thu,20 Jun 2013 00:00:00  GMT</pubDate>
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