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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=201103</link>
<language>zh-cn</language>
<copyright>An RSS feed for Chinese Journal of Magnetic Resonance Imaging</copyright>
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<title><![CDATA[Application of breast MRI in breast cancer screening: interpretation of the latest breast imaging screening guideline issued by ACR & SBI in 2010]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.001</link>
<description><![CDATA[It is well demonstrated that breast cancer is able to be early detected by imaging before palpated. Among all breast imaging modalities, mammography screening is the solely one that was demonstrated to reduce mortality of breast cancer. However, it is not perfect. Due to limitations of mammography, there have been many investigations to explore feasibility and validity of breast imaging beyond mammography, such as ultrasound and MRI. Consequently, screening protocols are getting more variable and complex. In 2010, American College of Radiology and Society of Breast Imaging updated the guideline of imaging screening, on the bases of board review of existed evidence and expertise consensus. Recommendations on screening using Mammography, Ultrasound and MRI according to breast cancer risk evaluation of women were issued. Specifically, breast MRI screening should be limited in high risk women. This article interpret the guideline, illustrate the contents, provide relevant evidence and knowledge and  address some important points with authors sight, in order to help in Chinese medical practice.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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<title><![CDATA[Value of MRI follow-up in breast cancer’s diagnosis and efficacy evaluation]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.002</link>
<description><![CDATA[MRI is not only important in the detection, diagnosis of breast cancer,but also is very important in the efficacy monitoring of breast cancer' treament. A great quantity of relevant domestic and foreign classic literature during nearly 10 years were retrospectively analyzed in this paper. Elaborate about the value of MRI follow-up in the early diagnosis of precancerous change,in the diagnosis of different sorts of breast cancer, in the diagnosis of breast cancer recurrence and so on. At the same time, the value of MRI follow-up is compared with mammography and breast ultrasound using mass data in published papers. The application of MRI in breast cancer neoadjuvant chemotherapy is also discussed. Based on the clinical work, some cases' images are used as instances. Breast MRI related technical requirements and the matters needing attention are noted.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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<title><![CDATA[Clinical value of functional MRI in assessment of early response to neoadjuvant chemotherapy in breast carcinoma]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.003</link>
<description><![CDATA[Functional MRI (fMRI) includes diffusion weighted imaging (DWI), 1H proton magnetic resonance spectroscopy (1H-MRS), and quantitative dynamic enhanced MRI. These imaging methods can predict early response to neoadjuvant chemotherapy (NAC) in patients with locally advanced breast cancer (LABC) by monitoring vascular supply of tumor and pathological response early after the initiation of treatment. Therefore, fMRI may bring benefits for clinical therapeutic strategy optimization. Combination of different fMRI methods is useful to evaluate early response to NAC.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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<title><![CDATA[Sequence and scanning parameter optimization for breast MRI]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.004</link>
<description><![CDATA[Magnetic resonance imaging (MRI) has been evolved as an indispensable noninvasive approach for diagnosis of breast diseases. The high quality images is crucial for breast MRI examination. The basic technical requirements, the major parameters and sequence optimization, the recommmended MRI sequences for the breast MRI as well as the post-processing techniques were briefly introduced in this article.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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<title><![CDATA[Breast MR imaging for the individual treatment of patient with breast cancer]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.005</link>
<description><![CDATA[It has been shown that MR imaging of the breast can fill many of the clinical information gaps that are inadequately evaluated by current conventional mammography and sonography due to MRI’s inherently high soft-tissue contrast and no ionising radiation. The usefulness of breast MRI in the individual treatment of patient with breast cancer was discussed in the paper, including cancer staging, detecting the primary malignancy of patients presenting as axillary metastases, screening the contralateral breast for occult cancer for patients with a finding of cancer in one breast, and MRI-guided localization and biopsy procedures.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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<title><![CDATA[Clinical significance of time-signal intensity curve type I on dynamic contrast-enhanced MRI of the breasts]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.006</link>
<description><![CDATA[Objective: To explore the value of time-signal intensity curve (TIC) type I in identifying enhanced lesions of the breasts on dynamic contrast-enhanced MRI (DCE-MRI). Materials and methods: Fifty-three patients with breast lesions performed MRI examinations at 3.0 T scanner. Numbers and features of the lesions were analyzed on axial FSE T1WI, axial and sagittal STIR T2WI, and 3-dimentional DCE-MRI after intravenous gadolinium administration. TIC types of the enhanced lesions were classified according to their shapes as type I, which was steady enhancement; type II, plateau of signal intensity; or type III, washout of signal intensity. Results: Among fifty-three female patients, abnormally enhanced lesions with TIC type I on DCE-MRI included benign lesions in 36 (breast adenosis 17, breast cystic hyperplasia 4, breast fibroadenoma 13, intraductal papilloma 2), untreated malignant lesions in 8 (ductal carcinoma in situ 3, mucinous carcinoma 4, invasive ductal carcinoma 1) and residual lesions of breast carcinoma following neoadjuvant chemotherapy in 9. Conclusion: TIC type I may be found in both benign and malignant lesions of the breasts, it is necessary to combine with morphological characteristics and clinical history for a correct judgment.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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<title><![CDATA[Comparison of different MRI sequences in cervical spinal cord injury]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.007</link>
<description><![CDATA[Objective: To compare conventional MRI, gradient-echo (GRE) T2*-weighted imaging (WI) and susceptibility weighted imaging (SWI) in acute cervical spinal cord injury (SCI). Materials and Methods: Conventional T1WI, T2WI, GRE T2*WI and high-resolution SWI were performed on sixteen patients with a history of acute cervical spine traumaby using a 3 Tesla MRI system (TrioTim, Siemens Medical Solution). The MRI findings on each sequence was observed and classified into 4 types: normal cord, spinal cord edema, spinal cord contusion and spinal cord hemorrhage. The signal intensity in the hemorrhage and normal spinal cord were measured on the same slice of T2*WI and SWI, respectively, and the ratio of the hemorrhage to normal spinal cord were calculated and compared by using Wilcoxon signed ranks test. All patients were also evaluated with clinical follow-up. Twenty volunteers were scanned as a control group. Results: In 16 patients with acute cervical spine trauma, conventional T1WI and T2WI showed normal in 2 cases and SCI in 14 patients, in which 6 patients had spinal cord edema, 4 had contusion and 4 had hemorrhage. However, both SWI and T2*WI demonstrated normal in 10 cases and detected hemorrhage in 6 patients, in which only 4 patients were detected hemorrhage by conventional MRIs, the other 2 patients were showed spinal contusion on conventional MRIs. The mean signal ratio of hemorrhage to normal tissue was 0.58 on T2*WI and 0.47 on SWI, and a signiﬁcant difference was revealed between them (Z=2.33, P=0.02). Conclusion: Conventional MRI including T1WI and T2WI is valuable in demonstrating spinal edema and contusion, but not very sensitive to spinal hemorrhage. SWI is more sensitive than T2*WI in detecting hemorrhage in acute cervical SCI and could be included in the routine evaluation of cervical SCI patients.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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<title><![CDATA[Differential diagnosis between cerebral lymphoma and gliomas multiblastoma by using of apparent diffusion coefficient]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.008</link>
<description><![CDATA[Objective: To investigate diffusion-weighted MR images (DWI) features of primary intracerebral lymphoma and gliomas multiblastoma (GMB), and to further assess the differentiation between them by using apparent diffusion coefﬁcient (ADC) value. Materials and Methods: Twelve patients with pathologically proved primary intra-cerebral lymphoma and 15 with GMB underwent MR examination, including DWI. The ADC values and ratio of ADC values (rADC) in solid parenchyma in all tumors were measured and compared between groups by two neuroradiologists. Results: Lymphoma showed slight-high or high intensity signal in DWI, and GMB were iso- or low intensity signal. Compared to normal appearing white matter, ADC values of lymphoma were significantly decreased [(0.593±0.176)×10-3 mm2/s, (0.773±0.057)×10-3 mm2/s, P=0.006], whereas those of GMB became obviously increased [(0.975±0.118)×10-3 mm2/s, (0.768±0.077)×10-3 mm2/s, P＜0.001]. ADC values and rADC values were signiﬁcantly different between lymphoma and GMB. Cutoff values to differentiate them were 0.805×10-3 mm2/s for ADC and 1.08 for rADC respectively. Conclusion: As a complementary method to conventional MR sequences, measurement of ADC value in DWI is helpful in the differentiated diagnosis on cerebral lymphoma and GMB.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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<title><![CDATA[Clinical value of whole-body magnetic resonance diffusion weighted imaging in the screening of malignant tumor]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.009</link>
<description><![CDATA[Objective: To evaluate the value of whole-body magnetic resonance diffusion weighted imaging (WB-DWI) in the screening of malignant tumor.  Materials and Methods: Ten healthy volunteers and 36 patients of clinically suspected malignant tumors underwent WB-DWI and conventional MRI (scanning CT if it is chest disease) enhancing the scanning when necessary. The medical results of WB-DWI and MRI/CT were compared with the findings of pathological diagnosis and clinical comprehensive evaluations. Results: Twenty-nine of 36 patients were diagnosed as malignant tumors by  final pathological endings, the others were benign lessions. Twenty-eight of 36 patients were diagnosed as malignant tumors by WB-DWI, 1 were misdiagnosed, 2 were missed. The primary lesions of 20 patients were diagnosed by WB-DWI. The sensitivity,  specificity, youden’s index and agreement/consistency rate were 93.1%, 85.7%, 0.79 and 91.7%. Six of 7 patients, abnormality of benign lesions were found by WB-DWI. Conclusion: WB-DWI have certain value in the screening of malignant tumor.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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<title><![CDATA[Applications of cellular MRI and cell labeling contrast agents in cell transplantation]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.010</link>
<description><![CDATA[The clinical applications of cell transplantation increase gradually along with the developments of preclinical researches. However, it is necessary to track the fate of transplanted cells in both clinical applications and preclinical researches. Magnetic resonance imaging is non-invasive and time continuous, and is an ideal method to continuous track transplanted cells in vivo. By labeling the cells with MRI contrast agents, we can monitor the migration, distribution and functional status of transplanted cells with MRI. Here we reviewed the progresses of magnetic resonance imaging and cell-labeling contrast agents in cell transplantation.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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<title><![CDATA[Progress of the research on the role of key node of precuneus/posterior cingulated cortex in default brain functional network]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.011</link>
<description><![CDATA[Previous studies have revealed that several regions of the brain constitute the default brain functional network. Many different tasks show that the precuneus/posterior cingulated cortex has a high degree interaction with other nodes than rest of the network. Evidence from the functional connectivity studies suggests that the precuneus/posterior cingulated cortex plays an important role in the default brain functional network. Analysis of the default brain functional network in different tasks shows that the brain functional network is scale-free with the properties of small world. From this point, the precuneus/posterior cingulated cortex maybe one of the key-node of the default brain function network.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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<title><![CDATA[A perception on the development of the virtual scan technology for the magnetic resonance imaging]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.012</link>
<description><![CDATA[The virtual scan technology for MRI  has been  developed since 1980’s. It has made a big progress with the development of the following aspects: (1) The development of the computing kernel for the virtual scan of the MRI. (2) The development of the computing technology, the visualization, the numerical approach, and parallel computing technology. (3) The development of the application technology of MRI. (4) The development of the virtual man, MRI-man. This paper introduces several aspects of the development of the virtual scan. In addition, some major issues in this area are also mentioned and some develop ideas have been proposed as well.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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<title><![CDATA[MRI diagnosis of prostate cancer and the effect of MRI in the therapy selection of prostate cancer]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.3969/j.issn.1674-8034.2011.03.013</link>
<description><![CDATA[MR has been widely used in the diagnosis and evaluation of prostate cancer and plays an important part in the clinical diagnosis and treatment of prostate cancer. In order to improve the knowledge of MRI application in prostate cancer, this paper summarized the values of multiple MR techniques in the diagnosis of prostate cancer and made a brief introduction on the effect of MRI in the therapy selection of prostate cancer.]]></description>
<pubDate>Sun,20 Mar 2011 00:00:00  GMT</pubDate>
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