Abstract：Objective To investigate the feasibility and accuracy of measuring the renal function by using the arterial phase, venous
phase and parenchymal phase CT, with isotope nephogram served as the reference standard. Methods Fifty-two patients with
unilateral renal disease were prospectively enrolled and underwent routine multi-phasic CT examination and 99mTc-DTPA renal
dynamic imaging Gates-GFR measurement. The product of renal volume and CT enhancement value (VE) was calculated from
the images of the arterial phase, venous phase and parenchymal phase CT respectively, to evaluate the renal function of diseased
kidneys. The Gates-GFR of the diseased kidneys derived from the 99mTc-DTPA renal dynamic imaging was employed as the reference
standard. Pearson correlation analysis was used to evaluate the correlation between the VE and Gates-GFR for each CT phase.
Results The A-VE, V-VE and P-VE all demonstrated good correlation with Gates-GFR, r=0.793, r=0.848 and r=0.927 respectively,
all P<0.001. Conclusion All the tri-phasic renal CT images could be used to assess renal function. The parenchymal phase CT may
be more accurate in the assessment of renal function.
杨征宇a，杨光a，袁小东b. 肾脏增强CT三期扫描用于测量肾功能的可行性和准确性初探[J]. 中国医疗设备, 2018, 33(10): 79-82.
YANG Zhengyua, YANG Guanga, YUAN Xiaodongb. Feasibility and Accuracy of Tri-Phasic CT on the Assessment of Renal Function. China Medical Devices, 2018, 33(10): 79-82.
