Parker M D, Clark R L
Department of Radiology, University of North Carolina Hospitals, Chapel Hill, USA.
Radiology. 1996 Jan;198(1):89-91. doi: 10.1148/radiology.198.1.8539412.
To confirm that use of low-osmolality contrast media (LOCM) in urography increases the frequency with which striations occur in otherwise healthy adults.
Two series of urograms obtained in 207 adult patients (101 men, 106 women) at two institutions after the administration of either LOCM or high-osmolality contrast media (HOCM) were reviewed. At the first, 106 patients had received LOCM; at the second, 101 had received HOCM. Protocols were similar. Urograms were evaluated for the presence and extent of striations.
Of 106 LOCM urograms, 16 (15%) showed striations. Of 101 HOCM urograms, only two (2%) showed striations. The difference in striations shown between the two groups was significant (P < .002). Striations were most common in renal pelves and distal ureters and on radiographs obtained after voiding.
Detection of urothelial striations on LOCM urograms in adults is most often normal. Increased prevalence of striations is likely due to decreased urinary tract distention associated with LOCM use.
证实尿路造影中使用低渗性对比剂（LOCM）会增加健康成人出现条纹的频率。
回顾了在两家机构对207例成年患者（101例男性，106例女性）分别给予LOCM或高渗性对比剂（HOCM）后获得的两组尿路造影图像。第一组中，106例患者接受了LOCM；第二组中，101例接受了HOCM。检查方案相似。对尿路造影图像进行条纹存在情况及范围的评估。
106例接受LOCM的尿路造影图像中，16例（15%）显示有条纹。101例接受HOCM的尿路造影图像中，仅有2例（2%）显示有条纹。两组间条纹显示情况的差异具有统计学意义（P < .002）。条纹最常见于肾盂和输尿管远端，以及排尿后获得的X线片上。
成人LOCM尿路造影图像上出现的尿路上皮条纹大多为正常现象。条纹发生率增加可能是由于使用LOCM导致尿路扩张程度降低所致。
