NORMAL RENAL-ARTERY SPECTRAL DOPPLER WAVE-FORM - A CLOSER LOOK

被引:52
作者
HALPERN, EJ
DEANE, CR
NEEDLEMAN, L
MERTON, DA
EAST, SA
机构
[1] Department of Radiology, Jefferson Medical College, Thomas Jefferson University Hospital, Philadelphia, PA 19107-5244
关键词
KIDNEY; US; RENAL ARTERIES; FLOW DYNAMICS; STENOSIS OR OBSTRUCTION; ULTRASOUND; (US); DOPPLER STUDIES;
D O I
10.1148/radiology.196.3.7644627
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
PURPOSE: To characterize the spectral Doppler tracing of the normal renal artery. MATERIALS AND METHODS: Doppler tracings were obtained from a phantom of a vessel with variable compliance and from the kidneys of 15 healthy volunteers. RESULTS: In the phantom, vascular compliance had the following effects on systolic flow velocity patterns: low compliance, little change in the sharp appearance of the systolic component of the transmitted pulse; mildly increased compliance, downstream dampening of early systolic acceleration (ESA) with the appearance of a sharp early systolic transmitted peak and of a more rounded late systolic compliance peak; high compliance, delayed and diminished transmitted peak that eventually disappeared within the enlarging downstream compliance peak. Healthy subjects with compliant vessels had greater ESA and more frequently visualized early systolic peaks in the renal hilum than in the renal sinus. CONCLUSION: Absence of a discrete early systolic peak is a normal finding in young patients, especially in the more distal interlobar arteries. Loss of the early systolic peak may be explained on the basis of vascular compliance.
引用
收藏
页码:667 / 673
页数:7
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