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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=201608</link>
<language>zh-cn</language>
<copyright>An RSS feed for Chinese Journal of Magnetic Resonance Imaging</copyright>
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<title><![CDATA[The value of MR intravoxel incoherent motion diffusion weighted imaging in T stage and differentiated degree of rectal adenocarcinoma]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.001</link>
<description><![CDATA[Objective: To investigate the value of intravoxel incoherent motion diffusion weighted imaging (IVIM-DWI) quantitative parameters in T stage and differentiated degree of rectal adenocarcinoma. Materials and Methods: Fourty-eight cases of rectal adenocarcinoma confirmed by colonoscopy underwent 3.0 T MR examination,their clinicopathologic data were collected (42 cases were pure adenocarcinoma, 6 cases were adenocarcinoma with partial mucinous adenocarcinoma). GE AW4.5 workstation was used to calculate the value of ADC, D, D* and f of various T stages and differentiated degree. All parameters of various T stages and differentiated degree were compared by ANOVA and comparison between the two groups by LSD.  Results: The ADC and D value in various T stage and in various degrees of differentiation were all statistically significant, for rectal adenocarcinoma of T2-T4, the value of ADC were (1.200±0.117)×10-3 mm2/s, (0.913±0.104)× 10-3 mm2/s, (0.786±0.450)×10-3 mm2/s, The value of D were (0.737±0.055)×10-3 mm2/s,(0.608±0.091)×10-3 mm2/s, (0.593±0.041)×10-3 mm2/s, the value of ADC in high, medium and low differentiation were (1.353±0.080)×10-3 mm2/s, (0.984±0.028)×10-3 mm2/s,(0.808±0.075)×10-3 mm2/s respectively, the value of D in high, medium and low differentation were (0.805±0.085)×10-3 mm2/s, (0.645±0.081)×10-3 mm2/s,(0.525±0.057)×10-3 mm2/s, D* and f value were no significant difference. Conclusion: ADC and D value are able to reflect T stage and differentiation features of rectal adenocarcinoma, IVIM-DWI can serve as a complement sequence for conventional MR sequences, can provide more information to choose the best treatment.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Correlation between estimated glomerular filtration rate(eGFR) and apparent diffusion coefficient (ADC) values of the kidneys]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.002</link>
<description><![CDATA[Objective: To determine the relationship between apparent diffusion coefficient (ADC) values of the kidney measured by diffusion-weighted MR imaging and the estimated glomerular filtration rate (eGFR).  Materials and Methods: A total of 627 adult patients in Renmin Hospital of Wuhan University, apply for kidney DWI examination in our hospital between January 2013 and May 2015. Regions of interests (ROIs) were manually delineated in the parenchyma as large as possible at the level of the middle portion of the bilateral kidneys. The eGFR was calculated by an equation based on serum creatinine level. The patients were divided into 3 groups: eGFR＜30 mL/min/1.73m2; 30 mL/min/1.73 m2≤eGFR ＜60 mL/min/1.73m2; and eGFR≥ 60 mL/min/1.73m2. Differences between the 3 groups respect to the mean renal ADCs and the correlation of the renal ADC value and eGFR were analyzed. Results: The mean ADC values of the 3 groups were (1.72±0.10)×10-3 mm2/s for the group with eGFR＜30 mL/min/1.73 m2; (1.88±0.16)×10-3 mm2/s for those with 30 mL/min/1.73m2≤eGFR＜60 mL/min/1.73m2; and (1.90±0.16)×10-3 mm2/s for those with eGFR≥ 60 mL/min/1.73m2. There was statistically significant difference in renal ADCs among the 3 groups (F=81.24, P＜0.001). The ADC of kidney showed positive linear correlation with eGFR (r=0.613, P＜0.05).  Conclusion: ADC values can reflect kidney filtration function to some extent. DWI may be useful to evaluate renal function．]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[The diagnostic values of diffusion-weighted imaging for ovarian cancer]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.003</link>
<description><![CDATA[Ovarian cancer is the most lethal gynecological malignancy. Early diagnosis and accurate assessment of disease and treatment effect can benefit patients. In recent years, diffusion-weighted imaging(DWI) is applied more and more in ovarian cancer. This article aims to review the current research status and future development prospect of DWI in ovarian cancer.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[MRI of cerebral small vessel damage in sleep apnea syndrome(SAS)]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.004</link>
<description><![CDATA[Objective: A case-control study was designed to evaluate the brain magnetic resonance image (MRI) of cerebral small vessel damage in SAS. To deplore the characters of cerebral small vessel damage in SAS. Materials and Methods: Ninety-three snoring patients were enlisted and underwent polysomnograghy(PSG) . All patients were divided in 4 parts according to apnea hyponea index(AHI): 27 non-SAS, 23 mild SAS, 24 moderate SAS and 19 severe SAS group. All participants underwent MRI and the data of silent brain infarction(SBI), subcortical deep white matter hyperintensity (SDWMH) and periventricular hyperintensity(PVH) were collected. The results of MRI among 4 groups were compared by RC table chi-square test. The influence factors of small vessel damage were analyzed through binary logistic analysis.  Results: SBI, SDWMH and PVH damage were increased along with the severity of SAS(P<0.05). AHI was the risk factor of SBI(OR 1.112, 95%CI 1.053—1.174, R2=0.387, χ2=29.009, P<0.001), SDWMH(OR 1.048, 95%CI 1.018—1.080，R2=0.193，χ2=13.056, P<0.001) and PVH (OR 1.043, 95%CI 1.015—1.073, R2=0.184, χ2=10.526, P=0.001). The cerebral small vessel damages in SAS were mostly found in basal ganglia(31% SBI) whereas frontal and parietal lobe(41%) in non-SAS group. Conclusion: SBI, SDWMH and PVH damage were increased along with the severity of SAS. AHI was the risk factor of SBI, SDWMH and PVH. Cerebral small vessel damage in SAS were mostly found in basal ganglia.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[A study of brain structural and functional magnetic resonance imaging in children with attention deficit hyperactivity disorder]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.005</link>
<description><![CDATA[Objective: To investigate the structural and functional brain changes in ADHD children using MRI. Materials and Methods: Ten ADHD children and 10 matched healthy controls underwent whole brain MRI scans on a GE 1.5 T scanner. High resolution 3-dimensional T1 weighted images and resting-state functional MRI were acquired. From MRI data, parametric maps (the volume maps of gray/white matter tissues and ALFF) were computed in standard toolkits, and group comparisons were performed in SPM8 using a voxel-based approach. Results: Compared with healthy controls, children with ADHD showed decrease of gray matter volumes in the bilateral mid-frontal cortex, precentral cortex, anterior cingulate cortex, putamen, and left orbitofrontal cortex and right caudate and cerebellum, decrease of white matter volumes in the bilateral prefrontal gyrus, anterior and posterior of corpus callosum and left orbitofrontal gyrus, and increased ALFF in bilateral anterior cingulate cortex, right mid- and superior-frontal cortex. Conclusion: ADHD is associated with both structural and functional deficits in brain development. High resolution 3D T1WI and rs-fMRI provides complementary neuropathological information underlying ADHD.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[The study of correlation between diffusion kurtosis imaging on cervical spinal cord and age in healthy]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.006</link>
<description><![CDATA[Objective: To explore the change rule of the normal adult spinal cord diffusion kurtosis imaging (DKI) parameter values and its correlation with age, provide a reference for the quantitative diagnosis of spinal diseases.  Materials and Methods: Gather 36 healthy adult volunteers with their age range from 18 to 65, Sheng jing Hospital, China Medical University, between August in 2015 and March in 2016. After divide into groups by age, carry out DKI sequence scanning on them and determine FA, MD and MK parameter values with MRI software ADW 4.6. Compare the differences of FA, MD and MK parameter value in different segments of intervertebral disc, and the correlation between above value and age change. Results: With the moving down of anatomic segment, the MD increased gradually, FA and MK gradually reduced. C2-3 level FA-GM and MD-WM with other level exists significant difference (F=10.01, P<0.05; F=16.94, P<0.05), the C6-7 level MK-GM and MD-GM also exists significant difference with other level (F=10.11, P<0.05; F=10.01, P<0.05). FA-WM negatively correlated with age (r=0.507, P<0.05); MK-GM and MK-WM age were positively correlated (r=0.436, P<0.01 and r=0.249, P<0.05). FA-WM and MK-GM exists significant difference in different groups(P<0.05). Conclusion: DKI is capable of reflect changes of the microstructure in healthy adult spinal cord grey and white matter, and correlation between age. MK may be the highly sensitive indexes to reflect nervous system complex microstructure and change after damage.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[The diagnostic value of CT and MRI in spinal tuberculosis]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.007</link>
<description><![CDATA[Objective: To explore the diagnostic value of CT and MRI in spinal tuberculosis. Materials and Methods: One hundred and ten cases with spinal tuberculosis confirmed by the surgical operation pathology, needle biopsy and follow-up received Computed Tomography and MRI plain scan, at the same time, some cases received enhance scan. Results: One hundred and ten cases of spinal tuberculosis (TB), including 9 cases of cervical vertebra, 25 cases of thoracic vertebra, 42 cases of lumbar vertebra, 31 cases of thoracic lumbar vertebra and 3 cases of the sacral vertebra. The CT features of spinal tuberculosis are the bone destruction of vertebral body and accessories, the formation of vertebral abscess, sequestrum, calcification and spinal canal stenosis, etc. The MRI features of spinal tuberculosis are MRI of spinal tuberculosis are the bone destruction of vertebral body and accessories, the destruction of intervertebral disc, the formation of vertebral abscess, the invasion of dural and myeloid, the diffusion of sub-ligament, etc. The CT in diagnosing sequestrum and calcification was significantly higher than MRI(P=0.00), but the MRI in diagnosing the bone marrow edema, the invasion of dural and myeloid, the diffusion of sub-ligament was significantly higher than CT(P=0.00).  Conclusion: The features of Spinal tuberculosis are diversified, CT and MRI has high value in diagnosis of spinal tuberculosis, CT has the advantage in showing sequestrum and calcification and MRI has the advantage in showing the early stages of dieases, the invasion of dural and myeloid, the diffusion of sub-ligament, such as a combination is helpful to diagnosing and differential diagnosing of spinal tuberculosis.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Evaluate measurement value of liver volume before pediatric living donor liver transplantation by MRI Argus]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.008</link>
<description><![CDATA[Objective: To evaluate the accuracy of the application of MRI Argus assessment in liver volume before pediatric living donor liver transplantation (PLDLT).  Materials and Methods: Eleven PLDLT donor livers underwent enhanced MRI scanning. Donor liver volumes were calculated with importing venous phase reconstruction data to Argus software, correlation analysis was used with actual removal of the liver weight during the operation. Results: Paired t-test showed there was statistically significant difference`(P＜0.01) between liver volume measured by MR Argus software (357.00±72.37) ml and real liver weight in intraoperative actual removal (284.45±61.27) g. Person correlation test showed liver volume measured by MR Argus software had a significantly positive correlation with real liver weight (r=0.982, P<0.001). Graft weight could be expressed in the equation: W real liver weight (g) = 0.832 × V liver volume measured by MR Argus-12.46. Conclusion: MRI Argus software is helpful to estimate graft volume before surgery, utilizing the regression equation can accurately forecast the quality of liver transplantation, and providing assessment for preoperative graft volume.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[The effect of intentionality on reactive aggression: a rs-fMRI study on individual differences]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.009</link>
<description><![CDATA[Objective: To study the neural basis of individual differences in the effect of other’s intentionality on individual’s reactive aggression, we used a variant of taylor aggression paradigm (TAP), with resting-state functional magnetic resonance imaging (rs-fMRI) technology.  Materials and Methods: Our experiment recruited thirty healthy male volunteers. These participants played successive competitive reaction-time tasks with four opponents in turn and the loser who responded more slowly would be punished by the winner. The four opponents were comprised of intentional high-aggressive opponent, intentional low-aggressive opponent, unintentional high-aggressive opponent and unintentional low-aggressive opponent. The effect of other’s intentionality on individual’s reactive aggression (i.e. the effect of intentionality) was measured by the difference in punishment intensity which participant gave to the intentional high-aggressive opponent and unintentional high-aggressive opponent. The rs-fMRI data was processed using DPARSF toolbox. Then correlation analysis was conducted to examine the relationship between the effect of intentionality and ReHo values. Results: Significant positive correlations between the effect of intentionality and ReHo values were observed in the temporo-parietal junction. Significant negative correlations between the effect of intentionality and ReHo values were observed in the striatum.  Conclusion: The data indicates that temporo-parietal junction and striatum are involved in the effect of other’s intentionality on individual’s reactive aggression.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[The comparative analysis of fractional amplitude of low-frequency fluctuation on the meatal health status of seafarers by using FMRI]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.010</link>
<description><![CDATA[Objective: To explore the differences of fractional amplitude of low-frequency fluctuation (fALFF) between seafarers and health people, by using the technique of resting state functional magnetic resonance imaging. Materials and Methods: All the subjects were divided into three groups, mental sub-health seafarers(subHS), health seafarers(HS) and health people(HP). Then calculate the fALFF of each subject, Finally, a statistical method was used to find the voxels which had significant difference between control group according to the Anatomical Automatic Labeling(AAL) template. Results: As a special profession, the brain activity of seafarers has plasticity. the main difference of seafarers’ fALFF were concentrated on parietal lobe compared with HP. the difference of fALFF on parietal lobe between subHS-HP were significantly decreased than that of HP-HS. Besides parietal lobe, the brain area of subHS including temporal lobe, precuneus and cingulate cortex also appear significant differences compared with HS.  Conclusion: Engaged in offshore occupation for a long time may lead to the change of brain functional activity, some seafarers even appear mental sub-health condition. The study can provide help for the protection of mental health of seafarers and the security of maritime operations.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Hemodynamic parameters comparison between 4D Flow MRI and computational fluid dynamics for intracranial aneurysms]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.011</link>
<description><![CDATA[Objective: To compare the results of 4D Flow MRI and computational fluid dynamics (CFD). Materials and Methods: In this study, 4 patients with intracranial aneurysms (IA) were selected, all of whom underwent both 4D Flow MRI scan and CFD simulation. Two sets of velocity data were analyzed and compared. 3D pathlines were calculated and visualized based on velocity data. Mean velocity profiles at IAs’ neck contour were obtained and normalized root mean squared error(NRMSE) as well as R-squared(R2) value were calculated and compared. At last, velocity distribution on maximum cross section slice were demonstrated. Results: This study shows 3D pathlines of 4D Flow MRI and CFD look similar to each other. Average velocity on IA’s neck contour are consistent. NRMSE values are 0.08992(0.10208, 0.10270, 0.04242, 0.11248). R2 values are 0.95958(0.9735, 0.9316, 0.9920, 0.9412). In maximum cross setion of IA, velocity distributions demonstrate similar features in general. Conclusion: There exists a strong linear correlation between 4D Flow MRI measurement and CFD simulation, but also some disagreements in detail. It’s necessary to undertake in vitro phantom experiments to investigate in detail.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Progress in MRI of cerebral venous vascular sinus]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.013</link>
<description><![CDATA[Cerebral venography of magnetic resonance imaging (MRI) is now an important diagonstic technology in depicting the variants, sinus injury, sinus thrombosis, venous infiltration and collateral venous anastomoses in patients with parasagittal meningiomas. MRV has its unique strengths in imaging venous sinus infiltration and variants. In this article, the authors reviewed the diagnostic features of different MR venography techniques in normal anatomy or venous occlusion, Finally, compared and summarised the advantages or disadvantages of all examinations.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[The research progress of MR diagnosis of spondylitis caused by brulles infection]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.014</link>
<description><![CDATA[Brucellosis is a zoonotic disease all over the world which is mainly distributed in Mediterranean countries and Middle East countries. The incidence increased every year. It is a systemtic infection involving multiple organs caused by brucellosis, while the spine is the most affected. MR imaging is the currently the best imaging tool for diagnosis and follow-up in patients with spinal infections. Especially dynamic enhanced magnetic resonance in clinical applications, making the spine lesions of the clinical diagnosis rate is getting higher and higher. MRI and Dynamic contrast-enhanced magnetic resonance imaging of brucella spondylitis and the differential diagnosis will be reviewed in this article.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[The advantages and clinical value of high resolution MRI in evaluating the stability of carotid plaque]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.015</link>
<description><![CDATA[Carotid atherosclerotic plaque rupture and thrombosis are the independent risk factors of acute ischemic cerebrovascular disease. Timely identification of vulnerable plaque is helpful to prevent the occurrence of stroke, and it can provide the basis for clinical treatment. In recent years, high resolution MRI has become a hot spot in the research of carotid artery screening with its high soft tissue resolution and the advantage of safety. It can well show the important biological characteristics of the plaque, analyze the internal composition and morphology of the patch, identify vulnerable plaque, and evaluate the stability of the plaque. The purpose of this paper is to make a brief summary of the high resolution MR in the identification of vulnerable plaque and its clinical application.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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<title><![CDATA[Research progess of diffusional kurtosis imaging in tumour]]></title>
<link>http://med-sci.cn/cgzcx/en/en_articlexml.asp?doi=10.12015/issn.1674-8034.2016.08.016</link>
<description><![CDATA[Diffusional kurtosis imaging (DKI) was an emerging magnetic resonance imaging technology which was base on the model of non-Gaussian distribution, it was also the extension of diffusional weight imaging(DWI) and diffusional tensor imaging (DTI). DKI could describe the non-Gaussian distribution characteristic of hydrone of intracellular and extracellular through quantitative analysis, which can offer more plentiful, real and accurate microstructure information of tissue than DWI and DTI. In recent years, DKI gradually apply to diseases of different systems, had achieved some initial results especially in tumours of brain and prostate, which displayed excellent clinical value. This article proposed to summary the technic principles and aplication advances in tumours for DKI.]]></description>
<pubDate>Sat,20 Aug 2016 00:00:00  GMT</pubDate>
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