《2016-MRI》.pdf

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《2016-MRI》.pdf

Clinical Radiology (2000) 55, 99–109 doi:10.1053/crad.1999.0327, available online at on Dynamic Contrast Enhanced MRI of Prostate Cancer: Correlation with Morphology and Tumour Stage, Histological Grade and PSA ANWAR R. PADHANI*†, CONNIE J. GAPINSKI*, DAVID A. MACVICAR*†, GEOFFREY J. PARKER†‡, JOHN SUCKLING* ¶, PATRICK B. REVELL†, MARTIN O. LEACH†, DAVID P. DEARNALEY§, JANET E. HUSBAND*† *Academic Department of Radiology, †CRC Clinical Magnetic Resonance Research Group and §Academic Department of Radiotherapy, Institute of Cancer Research, The Royal Marsden NHS Trust, Downs Road, Sutton, Surrey, SM2 5PT, U.K. Received: 5 February 1999 Revised: 30 June 1999 Accepted: 9 July 1999 AIM: To quantify MRI enhancement characteristics of normal and abnormal prostatic tissues and to correlate these with tumour stage, histological grade and tumour markers. MATERIALS AND METHODS: Quantitative gradient recalled echo MR images were obtained following bolus injection of gadopentetate dimeglumine in 48 patients with prostate cancer. Turbo spin-echo T2-weighted images at the same anatomical position were reviewed for the presence of tumours (45 regions), normal peripheral zone (33 regions), and normal appearing central gland (30 regions). Time-signal intensity parameters (onset time, mean gradient and maximal amplitude of enhancement and wash-out score) and modelling parameters (permeability surface area product, lesion leakage space a

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