Secaf E, Nuruddin R N, Hricak H, McClure R D, Demas B
Department of Radiology, University of California, School of Medicine, San Francisco 94143-0628.
AJR Am J Roentgenol. 1991 May;156(5):989-94. doi: 10.2214/ajr.156.5.2017966.
MR imaging (0.35 and 1.50 T) was used to assess the appearance of the seminal vesicles. The size and signal intensity of normal seminal vesicles vary with the age of the subject. In general, on T2-weighted images, the signal intensity of normal seminal vesicles is lower than that of fat in prepubertal children, similar to or higher than that of fat in adults, and similar to or lower than that of fat in patients older than 70 years of age. Endocrine and radiation therapy will influence the size and signal intensity of the seminal vesicles. The purpose of the essay is to illustrate the spectrum of seminal vesicle disease, including congenital anomalies, inflammation, and neoplastic disease. Although MR imaging is helpful in depicting seminal vesicle abnormalities, it does not allow differentiation of benign from malignant disease, distinction of hemorrhage due to tumor invasion from postbiopsy changes, or distinguishing between glandular obstruction due to tumor infiltration and mechanical compression.
采用磁共振成像（0.35和1.50 T）评估精囊外观。正常精囊的大小和信号强度随受试者年龄而变化。一般来说，在T2加权图像上，青春期前儿童正常精囊的信号强度低于脂肪，与成年人脂肪相似或高于脂肪，与70岁以上患者脂肪相似或低于脂肪。内分泌和放射治疗会影响精囊的大小和信号强度。本文的目的是阐述精囊疾病的范围，包括先天性异常、炎症和肿瘤性疾病。虽然磁共振成像有助于描绘精囊异常，但它无法区分良性与恶性疾病，无法区分肿瘤侵袭引起的出血与活检后改变，也无法区分肿瘤浸润导致的腺管阻塞与机械性压迫。
