医学
海绵体
阴茎
磁共振成像
解剖
尿道
软组织
血管造影
穿通动脉
微血管成像
放射科
动脉瘤
作者
E. Scott Pretorius,Evan S. Siegelman,Parvati Ramchandani,Marc P. Banner
出处
期刊:Radiographics
[Radiological Society of North America]
日期:2001-10-01
卷期号:21 (suppl_1): S283-S298
被引量:113
标识
DOI:10.1148/radiographics.21.suppl_1.g01oc24s283
摘要
The signal intensity of the corpora cavernosa of the penis at magnetic resonance (MR) imaging may vary from that of the corpus spongiosum; this difference is dependent on the rate of blood flow within the cavernous spaces that constitute the corporal bodies. Also visible at MR imaging are the layers of fibrous tissue that envelop the corporal bodies, the deep arteries and veins, subcutaneous connective tissue, tunica dartos, epidermis, and urethra. While the iliac, pudendal, perineal, and common penile arteries can be evaluated with three-dimensional MR angiography, the smaller end arteries of the penis have not yet been reliably demonstrated. MR imaging may be used to detect and stage penile and urethral cancers, identify and characterize benign penile masses, evaluate arteriogenic impotence, identify penile fractures, evaluate penile prostheses, localize periurethral abscesses, and identify plaques of Peyronie disease. With its direct multiplanar imaging capabilities, superb soft-tissue contrast, and excellent spatial resolution, high-field surface coil MR imaging can show the soft-tissue and vascular anatomy of the penis, as well as the appearance of many penile diseases.
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