Comparison of normal standard value of glomerular filtration rate in different types of SPECT / 中国医学影像技术

ABSTRACT

Objective To evaluate and compare the normal value of glomerular filtration rate (GFR) in different modalities of single photon emission computed tomography (SPECT). Methods Fifty normal volunteers were divided into 4 groups (aged 20-29, n=14;30-39, n=10;40-49, n=14;50-, n=12). All of the volunteers underwent renal dynamic imaging with MPR SPECT, and single renal GFR value as well as total GFR value was calculated, respectively. The data were compared with GFR values obtained from Starcom 400AC/T SPECT (aged 20-29, n=6;30-39, n=11;40-49, n=7;50-, n=9). Single t test was used to testify the difference of the mean value between the two modalities of SPECT. Results The mean value of single renal GFR in each group of MPR SPECT was (51.03±11.12) ml, (48.44±11.13) ml, (47.79±7.71) ml and (46.54±12.28) ml,while of Starcom 400AC/T SPECT was (57.92±9.03) ml, (57.34±10.33) ml, (55.30±8.51) ml and (44.12±7.94) ml, respectively, and the total renal GFR in each group of MPR SPECT was (102.13±18.33) ml, (96.62±19.90) ml, (95.54±13.04) ml and (92.85±22.83) ml, of Starcom 400AC/T SPECT (115.86±16.51) ml, (113.14±17.71) ml, (110.54±11.13) ml and (88.12±14.41) ml, respectively (all P<0.05). The mean value of single renal GFR was (48.51±10.50) ml and (52.92±10.61) ml, respectively, while the mean value of total renal GFR was (97.04±18.16) ml and (105.63±18.72) ml, respectively (all P<0.05). Conclusion GFR standard value obtained from different SPECT renal dynamic imaging is varied. It is necessory to establish GFR standard value for each type of SPECT.