STAGING OF URINARY-BLADDER NEOPLASMS WITH MR IMAGING - IS GD-DTPA HELPFUL

被引:23
作者
NEUERBURG, JM [1 ]
BOHNDORF, K [1 ]
SOHN, M [1 ]
TEUFL, F [1 ]
GUNTHER, RW [1 ]
机构
[1] UNIV AACHEN,FAC MED,DEPT UROL,AACHEN,GERMANY
关键词
BLADDER; NEOPLASMS; GADOLINIUM; CONTRAST MEDIA; MAGNETIC RESONANCE IMAGING;
D O I
10.1097/00004728-199109000-00010
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
This study was performed to investigate whether intravenous administration of Gd-DTPA can improve the accuracy of MR imaging in the detection and staging of bladder neoplasms. In 68 patients with suspected urinary bladder neoplasms, MR examinations were performed with TI-weighted SE sequences before and after intravenous administration of Gd-DTPA. The findings were compared with surgical staging using the TNM classification. Overall staging accuracy of contrast enhanced MR was 46%; if stages Ta-T3a were combined into one group, the accuracy was 69%. Accuracy was low (19%) in tumors without muscular bladder wall invasion (Ta). In cases with extravesical spread (greater-than-or-equal-to T3b), the accuracy of staging was 87%. Contrast enhanced MR detected extravesical extension of tumor with a sensitivity of 93% and a specificity of 95%. Contrast enhancement increased the sensitivity for detection of urinary bladder neoplasms from 70% on precontrast TI-weighted scans to 79% on postcontrast scans. In comparison with T2-weighted scans, the Gd-DTPA enhanced T1-weighted scans had better image quality and lower acquisition times.
引用
收藏
页码:780 / 786
页数:7
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    VOCK, P
    HAERTEL, M
    FUCHS, WA
    KARRER, P
    BISHOP, MC
    ZINGG, EJ
    [J]. BRITISH JOURNAL OF UROLOGY, 1982, 54 (02): : 158 - 163