论文部分内容阅读
目的:探讨~(99)Tc~m-DTPA肾动态显像在肾移植术后监测中的图像特征和临床价值。方法:28例肾移植患者进行~(99)Tc~m-DTPA肾动态显像,同时测定移植肾的肾小球滤过率(GFR)和膀胱放射性计数与肾脏放射性计数比值(B/K值),定性和定量分析肾移植术后的影像特征。结果:12例肾移植术后肾血流灌注及功能良好,GFR值为(51.5±6.3)ml/min,B/K均>3.6例急性排斥反应肾血流灌注受损程度重于功能相,GFR值为(33.4±5.7)ml/min,B/K均<1.7例慢性排斥反应肾血流灌注和功能相均同时受损,GFR值为(27.5±2.1)ml/min,B/K均<1.1例超急性排斥反应表现为放射性空白区。2例肾小管坏死肾血流灌注损伤轻于功能相。所有影像表现与临床或病理结果相吻合。结论:~(99)Tc~m-DTPA肾动态显像可快速且定量评价移植肾的血流和功能,早期初步鉴别排斥反应的类别且具有无创、简单、重复性强的特点。
Objective: To investigate the imaging characteristics and clinical value of ~ (99) Tc ~ m-DTPA renal dynamic imaging in postoperative monitoring of renal transplantation. Methods: The renal dynamic imaging of 99 Tc m-DTPA was performed in 28 renal transplant recipients. The glomerular filtration rate (GFR) and the radioactivity count (B / K) ), Qualitative and quantitative analysis of the image characteristics after renal transplantation. Results: The renal perfusion and function were good in 12 cases after renal transplantation. The GFR value was (51.5 ± 6.3) ml / min, and the B / K> 3.6 cases. The degree of renal perfusion injury in acute rejection was more than that in functional phase, GFR value was (33.4 ± 5.7) ml / min and B / K was less than 1.7 in chronic rejection group. GFR was (27.5 ± 2.1) ml / min and B / K <1.1 cases of hyperacute rejection showed radioactive blank area. 2 cases of renal tubular necrosis renal perfusion injury lighter than the functional phase. All imaging findings are consistent with clinical or pathological findings. CONCLUSION: ~ (99) Tc m-DTPA renal dynamic imaging can be used to evaluate the blood flow and function of renal allograft rapidly and quantitatively. Early classification of rejection can be identified early and has the characteristics of non-invasive, simple and repetitive.