Ohgi K
Department of Radiology, Tokyo Women's Medical College.
Nihon Igaku Hoshasen Gakkai Zasshi. 1992 Jul 25;52(7):971-8.
MR findings of 82 cases without seminal vesicle lesions were retrospectively evaluated to assess the mutual correlations between age, size and signal intensity of the seminal vesicle. MR findings of 31 cases of carcinomatous invasion to the seminal vesicle were also evaluated as a control group for low signal intensity area-study. 1.5T superconductive unit (Toshiba 2000FX-II) was used to obtain T1-weighted (SE500/13) and T2-weighted (SE2500/80) images. Significant correlations were noted between age, short-axis diameter of the seminal vesicle and global signal intensity of the seminal vesicle on T2-weighted images. In the study of low signal intensity area on T2-weighted images, diffuse strand-like low signal intensity areas were occasionally seen in cases without seminal vesicle lesions. On the other hand, low signal intensity areas in cases of carcinomatous invasion to the seminal vesicle tended to be more localized and nodular. MR evaluation of cases without seminal vesicle lesions is important not only to delineate physiological changes of the seminal vesicle, but also to avoid erroneous MR-diagnosis of seminal vesicle lesions.
回顾性评估82例无精囊病变患者的磁共振成像（MR）表现，以评估精囊的年龄、大小和信号强度之间的相互关系。还对31例癌侵犯精囊患者的MR表现进行了评估，作为低信号强度区域研究的对照组。使用1.5T超导单元（东芝2000FX-II）获取T1加权（SE500/13）和T2加权（SE2500/80）图像。在T2加权图像上，精囊的年龄、短轴直径和整体信号强度之间存在显著相关性。在T2加权图像上低信号强度区域的研究中，无精囊病变的病例偶尔可见弥漫性条索状低信号强度区域。另一方面，癌侵犯精囊病例中的低信号强度区域往往更局限且呈结节状。对无精囊病变病例进行MR评估不仅对描绘精囊的生理变化很重要，而且对避免精囊病变的MR误诊也很重要。
