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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	C of the head by use of reduced current and kilovoltage:relationship between image quality and dose reduction显示文摘	Cohnen M Fischer H Hamacher J	2000	AJNR2000，21，：	1
3	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
4	Multi-slice CT-colonography in low-dose technique-preliminary result显示文摘	Cohnen M Vogt C Aurich A	2002	Rofo Fortschr Geb Rontgenstr Neuen Bildgeb Verfahr2002，174，7：	1
5	CT of the head by use of reduced current Kilovoltage: relalionship between image qualily and dose reduction显示文摘	Cohnen M Fisher H Mamacher J	2000	AJNR2000，21，：	1
6	Detection of colorectal polyps by muhislice CT colonography with uhralow dose technique: comparison with high-resolution videocolonoscopy 显示文摘	Vogt C Cohnen M Beck A	2004	Gastrointest Endosc2004，60，2：	1
7	Feasibility of MDCT colonography in ultra-low-dose technique in the detection of colorectal lesions:comparison with high-resolution video colonoscopy 显示文摘	Cohnen M Vogt C Beck A	2004	AJR2004，183，5：	1
8	The relation of regional cerebral perfusion and atrophy in mild cognitive impairment (MCI)and early Alzheimer's dementia显示文摘	Luckhaus C Cohnen M Fluss MO		0，，：	1
9	Surface CDI07a/ LAMP - 1 protects natural killer cells from degranulation - asso- ciated damage 显示文摘	Cohnen A Chiang SC Stojanovie A et	2013	Blood2013，122，8：	1
10	Effective doses in standard protocols for multi-slice CT scanning显示文摘	Cohnen M Poll LJ Puettmann C		0，，05：	1
11	Effective dose in standard protocols for multi-slice CT scanning显示文摘	Cohnen M Poll L J Puettmann C	2003	Eur Radiol2003，13，5：	1
12	Contrast-enhanced MR urography in the evaluation of renal transplants with urological complications显示文摘	Cohnen M Brause M May P	2002	Clin Nephrol2002，58，2：	1
13	A Simple Synthesis of Pyrroles显示文摘	Erich Cohnen Renate Dewald	1987	Synthesis1987，，06：	1
14	CT of the head by use of reduced current kilovoltage:relationship between image qualily and dose reduction显示文摘	Fisher H Mamacher J	2000	AJNR2000，21，9：	1
15	Occlusion of surgical opening of the ventricular system with fibrinogen-coated collagen fleece: a case collection study 显示文摘	Bock HC Cohnen J Keric N	2011	Acta Neurochir (Wien)2011，153，3：	1
16	Modulation of NKp30- and NKp46-mediated natural killer cell responses by poxviral he- magglutinin显示文摘	Jarahian M Fiedler M Cohnen A	2011	PLoS Pathog2011，7，10：	1
17	Radiation exposure in multislice CT of the heart显示文摘	Cohnen M Poll L Puttmann C	2001	Rofo Fortschr Geb Rontgenstr Neuen Bildgeb Verfahr2001，173，：	1
18	Radiation exposure o patients in comprehensive computed tomography of the head in a- cute stroke显示文摘	Cohnen M Wittsack H J Assadi S	2006	AJNR2006，27，8：	1
19	A Comparison of conventional panoramic radiographs with volumetric computed tomography images in the preoperative assessment of impacted mandibular third molars显示文摘	Pawelzik J Cohnen M Willers R	2002	J Oral Maxillofac Surg2002，60，9：	1
20	Feasibility of MDCT Colonography in ultra-low-dose technique in the detection of colorectal lesions:comparisen with high-resolution video colongscopy显示文摘	Cohnen M Vogt C Beck A	2004	AJR2004，183，5：	1

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