国际医学放射学杂志
國際醫學放射學雜誌
국제의학방사학잡지
INTERNATIONAL JOURNAL OF MEDICAL RADIOLOGY
2014年
3期
205-208
,共4页
杨芹%么喜存%孙浩然%付胜伟%郑翠敏
楊芹%麽喜存%孫浩然%付勝偉%鄭翠敏
양근%요희존%손호연%부성위%정취민
单侧输尿管梗阻%超声成像%血流灌注%对比增强%动物模型
單側輸尿管梗阻%超聲成像%血流灌註%對比增彊%動物模型
단측수뇨관경조%초성성상%혈류관주%대비증강%동물모형
Unilateral ureteral obstruction%Ultrasound imaging%Blood perfusion%Contrast enhancement%Animal models
目的:探讨超声造影(CEUS)技术及定量分析方法评估单侧输尿管梗阻(UUO)大鼠模型肾血流灌注改变的应用价值,为临床无创定量评价梗阻性肾病的血流灌注提供理论依据。方法20只健康SD大鼠于麻醉下行左侧输尿管结扎术,建立UUO模型。分别于术前和术后7 d行CEUS检查,并于术后7 d CEUS检查后行相关病理检查。使用QLAB软件行双肾皮质血流灌注定量分析,并采用 SPSS16.0统计软件分析时间-强度曲线(TIC)上升支斜率(A)、峰值强度(PI)、达峰时间(TTP)、受试者操作特征曲线下面积(AUC)。结果 UUO术后与术前比较,其TTP 显著延长[(27.42±6.17) s∶(21.27±4.08) s,P<0.05], A [(0.88±0.79) dB/s∶(1.81±0.45) dB/s,P<0.05]及 PI [(13.60±2.64) dB∶(16.50±1.36) dB,P<0.05]明显减低, AUC [(1508.43±481.56) dB·s∶(1309.40±306.93) dB·s,P<0.05]明显增高;健侧肾皮质TIC 与术前比较,30 s 之内相似,30 s 后曲线下降缓慢,AUC 明显增高[(1311.50±406.14) dB·s∶(1209.94±298.41) dB·s ,P<0.05],A、PI和TTP无明显变化(P>0.05)。结论 CEUS及定量分析方法能反映UUO大鼠血流灌注状态的改变,为临床无创定量评价梗阻性肾病的血流灌注提供理论依据。
目的:探討超聲造影(CEUS)技術及定量分析方法評估單側輸尿管梗阻(UUO)大鼠模型腎血流灌註改變的應用價值,為臨床無創定量評價梗阻性腎病的血流灌註提供理論依據。方法20隻健康SD大鼠于痳醉下行左側輸尿管結扎術,建立UUO模型。分彆于術前和術後7 d行CEUS檢查,併于術後7 d CEUS檢查後行相關病理檢查。使用QLAB軟件行雙腎皮質血流灌註定量分析,併採用 SPSS16.0統計軟件分析時間-彊度麯線(TIC)上升支斜率(A)、峰值彊度(PI)、達峰時間(TTP)、受試者操作特徵麯線下麵積(AUC)。結果 UUO術後與術前比較,其TTP 顯著延長[(27.42±6.17) s∶(21.27±4.08) s,P<0.05], A [(0.88±0.79) dB/s∶(1.81±0.45) dB/s,P<0.05]及 PI [(13.60±2.64) dB∶(16.50±1.36) dB,P<0.05]明顯減低, AUC [(1508.43±481.56) dB·s∶(1309.40±306.93) dB·s,P<0.05]明顯增高;健側腎皮質TIC 與術前比較,30 s 之內相似,30 s 後麯線下降緩慢,AUC 明顯增高[(1311.50±406.14) dB·s∶(1209.94±298.41) dB·s ,P<0.05],A、PI和TTP無明顯變化(P>0.05)。結論 CEUS及定量分析方法能反映UUO大鼠血流灌註狀態的改變,為臨床無創定量評價梗阻性腎病的血流灌註提供理論依據。
목적:탐토초성조영(CEUS)기술급정량분석방법평고단측수뇨관경조(UUO)대서모형신혈류관주개변적응용개치,위림상무창정량평개경조성신병적혈류관주제공이론의거。방법20지건강SD대서우마취하행좌측수뇨관결찰술,건립UUO모형。분별우술전화술후7 d행CEUS검사,병우술후7 d CEUS검사후행상관병리검사。사용QLAB연건행쌍신피질혈류관주정량분석,병채용 SPSS16.0통계연건분석시간-강도곡선(TIC)상승지사솔(A)、봉치강도(PI)、체봉시간(TTP)、수시자조작특정곡선하면적(AUC)。결과 UUO술후여술전비교,기TTP 현저연장[(27.42±6.17) s∶(21.27±4.08) s,P<0.05], A [(0.88±0.79) dB/s∶(1.81±0.45) dB/s,P<0.05]급 PI [(13.60±2.64) dB∶(16.50±1.36) dB,P<0.05]명현감저, AUC [(1508.43±481.56) dB·s∶(1309.40±306.93) dB·s,P<0.05]명현증고;건측신피질TIC 여술전비교,30 s 지내상사,30 s 후곡선하강완만,AUC 명현증고[(1311.50±406.14) dB·s∶(1209.94±298.41) dB·s ,P<0.05],A、PI화TTP무명현변화(P>0.05)。결론 CEUS급정량분석방법능반영UUO대서혈류관주상태적개변,위림상무창정량평개경조성신병적혈류관주제공이론의거。
Objective To explore renal blood perfusion characteristics in unilateral ureteral obstruction (UUO) rat with contrast-enhanced ultrasound (CEUS), to provide a theoretical basis for clinical noninvasive quantitative evaluation of obstructive nephropathy. Methods Twenty Sprague Dawley rats were used in the study. CEUS were preformed before and 7 days after the UUO operation, and followed with histopathologic examination. Regional perfusion values of renal parenchyma were measured with QLAB software. SPSS16.0 statistical software was used for analasysing blood perfusion time to peak (TTP), slope rate of ascending curve (A), peak intensity (PI),and area under ROC curve (AUC). Results The perfusion values of hydronephrosis renal cortex were significantly changed in UUO rats compared to the preoperative values:TTP (27.42±6.17 s vs. 21.27±4.08s, P<0.05), A (0.88±0.79 dB/s vs. 1.81±0.45 dB/s, P<0.05) and PI (13.60±2.64 dB vs. 16.50±1.36 dB, P<0.05), AUC (1 508.43±481.56 dB·s vs. 1 309.40±306.93) dB·s, P<0.05). The perfusion curve of the contralateral renal cortex was similar to the preoperative within the first 30s, however after 30s, the curve was slowed down significantly. The AUCs (1311.50 ±406.14 dB·s vs. 1209.94 ±298.41 dB·s, P<0.05) were significantly increased. However, A, PI, and TTP had no significant difference between pre-operation and post-operation (P>0.05). Conclusion CEUS and quantitative analysis techniques could reflect the change of kidney perfusion in UUO rats , it provides a theoretical basis for clinical noninvasive quantitative evaluation of obstructive nephropathnephropathy.