肾内血流参数在肾动脉狭窄超声诊断中的应用
2016-07-11刘睿宏张红菊李煜迟鸿冰
刘睿宏 张红菊 李煜 迟鸿冰


[摘要] 目的 探讨肾内动脉血流参数在肾动脉狭窄超声诊断中的应用价值。 方法 选取2006年10月~2015年7月来我院行肾动脉彩色多普勒超声检查的30例健康者(47条正常肾动脉)作为对照组,选择同期来院就诊的67例肾动脉狭窄患者(81条狭窄肾动脉)作为患病组,共128条肾动脉分别行彩色多普勒超声检查,测量肾动脉收缩期峰值流速(RPSV)、肾内段动脉及叶间动脉峰值血流流速(PSV)、加速度(AC)、加速时间(AT)、阻力指数(RI),计算肾动脉主干与肾内叶间动脉峰值流速比(RIR)及肾动脉主干与肾内段动脉峰值流速比(RSR)。 结果 肾内动脉AC、RIR和RSR在各组别间比较差异均有统计学意义(P<0.05)。 结论 肾内动脉AC、RIR和RSR是较好的指标,可用于不同程度肾动脉狭窄的分级诊断。
[关键词] 肾内血流参数;肾动脉狭窄;超声诊断
[中图分类号] R445.1 [文献标识码] A [文章编号] 1674-4721(2016)03(c)-0066-03
[Abstract] Objective To evaluate the value of Doppler parameters of intrarenal artery in diagnosing renal artery stenosis. Methods A total of 128 renal arteries (47 branches of renal artery of thirty healthy subjects,81 branches of renal artery of sixty-seven renal artery stenosis patients) were examined by color Doppler flow imaging from October 2006 to July 2015.Doppler parameters including the peak systolic velocity (PSV),acceleration time (AT),acceleration (AC),resistant index (RI) of intrarenal artery (segmental artery and interlobar artery) and the renal peak systolic velocity(RPSV) were measured.The renal-segmental ratio (RSR) and the renal-interlobar ratio (RIR) were calculated. Results There is significant difference in all groups of RIR,RSR and AC of intrarenal artery.There is not significant difference in all groups of PSV,AT and RI of intrarenal artery. Conclusion AC of intrarenal artery,RSR and RIR are reliable parameters for estimating the degree of renal artery stenosis.
[Key words] Renal blood flow parameters;Renal artery stenosis;Ultrasonic diagnosis
国内外对于彩色多普勒超声诊断肾动脉狭窄已有很多报道,长期以来,肾动脉狭窄处收缩期峰值血流速度(peak systolic velocity,PSV)是评价狭窄程度的主要指标[1-3],但由于肾动脉位置较深,血管内径较细,并受肠道气体、腹部皮下脂肪较厚等因素影响,探测难度大,肾动脉主干探测成功率不尽如人意[4-6],另外,肾动脉狭窄处两端动脉状况对狭窄处血流速度的影响会导致以肾动脉狭窄处PSV升高来诊断肾动脉狭窄的准确性下降[7-10]。近年来,人们逐渐把研究重点放在临床工作中操作可行性较好的狭窄下游动脉即肾段动脉、叶间动脉等肾内动脉的血流参数测量上[1,7,11-13]。本研究旨在通过对肾内动脉血流参数的分析,探讨肾内动脉血流参数对肾动脉狭窄的诊断意义。……
