论文摘要翻译

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[Abstract]

Objective: To study the changes of the ultrasonic elastic modulus of renal cortex, vertebral body and sinus in different degree of acute renal artery stenosis.

Methods: 10 Japanese long ear rabbits, anesthesia, laparotomy, separation of the left renal artery, by a bundle method caused different degree of renal artery stenosis: renal artery stenosis 0% (no beam bar), renal artery stenosis is more than or equal to 50% of renal artery and 100% stenosis of ligation. The probe was placed on the surface of the left kidney. The young's modulus of the

middle cortex, vertebral body and the kidney was detected by ultrasonic shear wave elastic imaging. After the measurement of the elastic modulus of

ultrasound shear wave in the three degree of renal artery stenosis,pathological studies were performed in 1 kidneys.

Results: 0% for renal artery stenosis, average values of Young's modulus of middle kidney cortex renis 、renal vertebral body and sinus renalis were (16.31 + 1.70) kPa, (13.38 + 1.63) kPa, (12.75 + 2. 26) kPa; when the renal artery stenosis rate is more than or equal to 50%, t average values of Young's

modulus of middle kidney cortex renis 、renal vertebral body and sinus renalis respectively (14.16 + 2.34) kPa, (11.49 + 2.70) kPa (10.72 + 2.56) kPa. When 100% of renal artery stenosis, average values of Young's modulus of middle kidney cortex renis 、renal vertebral body and sinus renalis were( 11.35 + 1.48) kPa, (8.39 + 1.29) kPa (7.08 + 1.52) kPa. In different degree of renal artery stenosis, the young's modulus of renal cortex was significantly higher than that of the renal vertebral body and sinus, and there was statistical significance (P < 0.05). With the increase of the degree of renal artery stenosis, the young's modulus of renal cortex, vertebral body and renal pelvis were gradually decreased, and the difference was statistically significant (P < 0.05).

Pathological study showed that with the increase of the degree of stenosis, glomerular volume gradually reduced, the red cells decreased gradually; renal tubule showed mild degeneration; renal interstitial vascular ischemic changes, reduced blood, showing a slight degeneration.

Conclusion: the young's modulus of renal cortex was higher than that of the Renal vertebral body and sinus in different degree of acute renal artery

stenosis. With the increase of the degree of renal artery stenosis, the young's modulus of the kidney cortex, vertebral body and renal sinus were gradually decreased.

[Key words] renal artery stenosis, Young's modulus value, ultrasonic shear wave elasticity imaging technique, rabbit


【摘要】

目的 研究不同程度急性肾动脉狭窄时肾脏肾皮质、肾椎体及肾窦的超声弹性模量值改变。 方法 10只日本大耳白兔，麻醉、开腹、分离左肾动脉，用束扎法造成不同程度肾动脉狭窄：肾动脉狭窄0%（未束扎）、肾动脉狭窄≥50%及肾动脉狭窄100%（结扎）。探头放于左肾脏表面，超声剪切波弹性成像技术检测肾脏中部皮质、椎体及肾窦的杨氏模量平均值，比较不同程度肾动脉狭窄时肾脏组织硬度变化。在上述3种程度肾动脉狭窄超声剪切波弹性模量值测量后，各取1个肾脏进行病理学研究。

结果 0%肾动脉狭窄时，肾中部肾皮质、肾椎体及肾窦的杨氏模量平均值分别为(16.31±1.70)kPa、（13.38±1.63）kPa、（12.75±2，26)kPa；肾动脉狭窄率≥50%时，肾中部皮质、肾椎体及肾窦的杨氏模量平均值分别为(14.16±2.34)kPa、（11.49±2.70）kPa及（10.72±2.56)kPa；100%肾动脉狭窄时，肾中部皮质、肾椎体及肾窦的杨氏模量平均值分别为(11.35±1.48)kPa、（8.39±1.29）kPa及（7.08±1.52)kPa。不同程度肾动脉狭窄时，肾皮质的杨氏模量值均明显高于肾椎体及肾窦，有统计学意义（P＜0.05）。随着肾动脉狭窄程度增加，肾皮质、肾椎体及肾盂的杨氏模量值呈逐渐减低，差异均有统计学意义（P＜0.05）。病理研究显示，随着狭窄程度的加重，肾小球体积逐渐缩小，其内红细胞逐渐减少；肾小管可见轻度变性；肾间质内血管缺血性改变、血液减少，可见轻微变性。 结论 不同程度急性肾动脉狭窄时，肾皮质的杨氏模量值高于肾椎体及肾窦。随着肾动脉狭窄程度增加，肾皮质、椎体及肾窦的杨氏模量值均逐渐减低。

【关键词】 肾动脉狭窄，杨氏模量值，超声剪切波弹性成像技术，兔

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