Kim T S, Chung J W, Park J H, Kim S H, Yeon K M, Han M C
Department of Radiology, Seoul National University College of Medicine, Korea.
J Vasc Interv Radiol. 1998 Jul-Aug;9(4):553-9. doi: 10.1016/s1051-0443(98)70320-3.
To assess the role of spiral computed tomographic angiography (CTA) in renal artery evaluation.
The authors prospectively performed both CTA and intraarterial digital subtraction angiography (IA-DSA) in 50 consecutive patients (24 males and 26 females) who ranged between 9 and 77 years old (mean, 39.3 years), in whom renovascular hypertension was suspected (n = 32) or who were potential renal donors (n = 18). The major scan parameters of CTA were 3-mm collimation, 4-5-mm/sec table speed, and 2-mm reconstruction interval. Both CTA and IA-DSA images were blindly interpreted by two radiologists with respect to the number of accessory renal arteries and the location and severity of renal artery stenosis.
CTA demonstrated 27 of 28 accessory renal arteries (detection rate = 96%). For the detection of stenoses greater than 50% (37 of 127 renal arteries, at 40 sites), the sensitivity and specificity of CTA were 90% and 97%, respectively. For the detection of stenoses greater than 50% in the main renal arteries (32 of 99 main renal arteries, at 32 sites), the sensitivity and specificity of CTA were 100% and 97%, respectively.
CTA is a reliable and accurate screening modality for the evaluation of renal arteries in patients with suspected renovascular hypertension and in potential renal donors.
评估螺旋计算机断层血管造影（CTA）在肾动脉评估中的作用。
作者前瞻性地对50例连续患者（24例男性和26例女性）进行了CTA和动脉内数字减影血管造影（IA-DSA），这些患者年龄在9至77岁之间（平均39.3岁），怀疑患有肾血管性高血压（n = 32）或为潜在肾供体（n = 18）。CTA的主要扫描参数为3毫米准直、4 - 5毫米/秒的床速和2毫米的重建间隔。两名放射科医生对CTA和IA-DSA图像进行盲法解读，以确定副肾动脉的数量以及肾动脉狭窄的位置和严重程度。
CTA显示了28条副肾动脉中的27条（检出率 = 96%）。对于检测大于50%的狭窄（127条肾动脉中的37条，位于40个部位），CTA的敏感性和特异性分别为90%和97%。对于检测主肾动脉中大于50%的狭窄（99条主肾动脉中的32条，位于32个部位），CTA的敏感性和特异性分别为100%和97%。
CTA是评估疑似肾血管性高血压患者和潜在肾供体肾动脉的可靠且准确的筛查方式。
