COMBINED GADOLINIUM-ENHANCED AND FAT-SATURATION MR IMAGING OF RENAL MASSES

被引:86
|
作者
SEMELKA, RC
HRICAK, H
STEVENS, SK
FINEGOLD, R
TOMEI, E
CARROLL, PR
机构
[1] UNIV CALIF SAN FRANCISCO,SCH MED,DEPT RADIOL,BOX 0628,SAN FRANCISCO,CA 94143
[2] UNIV CALIF SAN FRANCISCO,SCH MED,DEPT UROL,SAN FRANCISCO,CA 94143
[3] LETTERMAN ARMY MED CTR,DEPT RADIOL,SAN FRANCISCO,CA 94129
关键词
GADOLINIUM; KIDNEY; CYSTS; KIDNEY NEOPLASMS; DIAGNOSIS; MR STUDIES; STAGING; MAGNETIC RESONANCE (MR); PULSE SEQUENCES;
D O I
10.1148/radiology.178.3.1994422
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
Combined gadopentetate dimeglumine enhancement and fat-saturation (FS) spin-echo (SE) magnetic resonance (MR) imaging for the detection and characterization of renal masses was evaluated in 43 patients with a total of 71 lesions (28 solid masses and 43 cysts). SE MR sequences compared were the following: short repetition time (TR)/echo time (TE), conventional SE, short TR/TE FS SE, long TR/TE conventional SE, gadolinium-enhanced short TR/TE conventional SE, and gadolinium-enhanced short TR/TE FS SE techniques. MR findings were compared with findings of contrast-enhanced computed tomography (CT) and with pathologic findings in all patients. The sensitivities for detection of renal masses with gadolinium-enhanced FS (71 of 71 lesions) and with gadolinium-enhanced short TR/TE conventional (65 of 71 lesions) SE sequences were significantly (P < .01) greater than with any unenhanced (short TR/TE conventional [40 of 71 lesions], short TR/TE FS [44 of 71 lesions], or long TR/TE [39 of 71 lesions]) SE sequence. Lesion characterization was also best with the gadolinium-enhanced FS SE sequence (65 of 71 lesions correctly classified). When combined pre- and postcontrast short TR/TE FS SE images were analyzed with both qualitative (visual) and quantitative (region-of-interest measurements) assessment, lesion characterization improved even further (70 of 71 lesions were correctly characterized). All lesions detected with CT were visualized with the gadolinium-enhanced FS SE MR sequence, which in addition depicted seven cysts and two small renal cell carcinomas. In summary, the use of gadopentetate dimeglumine, especially when combined with the FS technique, was superior to unenhanced MR imaging for detection and characterization of renal lesions.
引用
收藏
页码:803 / 809
页数:7
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