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5篇 您的检索式：作者名="Mathias Cohnen"

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		题名	作者	年代	出处	被引量
	1	Voxel-based analyses of magnetization transfer imaging of the brain in hepatic encephalopathy显示文摘AIM: To evaluate the spatial distribution of cerebral abnormalities in cirrhotic subjects with and without hepatic encephalopathy (HE) found with magnetization transfer imaging (MTI).METHODS: Nineteen cirrhotic patients graded from neurologically normal to HE grade 2 and 18 healthy control subjects underwent magnetic resonance imaging. They gave institutional-review-board-approved written consent. Magnetization transfer ratio (MTR) maps were generated from MTI. We tested for significant differences compared to the control group using statistical non-parametric mapping (SnPM) for a voxelbased evaluation.RESULTS: The MTR of grey and white matter was lower in subjects with more severe HE. Changes were found in patients with cirrhosis without neurological defi cits in the basal ganglia and bilateral white matter. The loss in magnetization transfer increased in severity and spatial extent in patients with overt HE. Patients with HE grade 2 showed an MTR decrease in white and grey matter: the maximum loss of magnetization transfer effect was located in the basal ganglia [SnPM (pseudo-)t = 17.98, P = 0.0001].CONCLUSION: The distribution of MTR changes in HE points to an early involvement of basal ganglia and white matter in HE.	Falk R Miese Hans-Jrg Wittsack Gerald Kircheis Arne Holstein Christian Mathys Ulrich Mdder Mathias Cohnen	2009	World Journal of Gastroenterology2009，15，41：	2
	2	CT of the head by use of reduced current and kilovoltage: relationship between image quality and dose reduction显示文摘	Mathias Cohnen Hubert Fischer Jurgen Hamacher	2000	AJNR2000，21，10：	1
	3	Effective doses in standard protocols for multi-slice CT scanning显示文摘	Poll WL Mathias CP	2003	Eur Radiol2003，13，：	1
	4	Comparison of whole-body 64-slice multidetector computed tomography and conventional radiography in staging of multiple myeloma显示文摘	Patric Kr?pil Roland Fenk Lars B. Fritz Dirk Blondin Guido Kobbe Ulrich M?dder Mathias Cohnen	2008	European Radiology2008，，1：	1
	5	Effective doses in standard protocols for multi-slice CT scanning显示文摘	Cohnen M Poll WL Mathias CP	2003	Eur Radiol2003，13，10：	1

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