[Quantitation of absolute and relative renal uptake using 99mTc-DMSA: sequential change in time and correlation with 99mTc-DTPA uptake].
A renal uptake of 99mTc-DMSA as a function of time and correlation between 99mTc-DMSA and 99mTc-DTPA in renal uptake were discussed. The absolute renal uptake of 99mTc-DMSA calculated by complete correction of tissue attenuation and physical decay showed increase by 5 hours after the administration, except one case with congestive heart failure. The net renal counts attained a maximum between 2 to 3 hours after the administration. There was a good correlation (r -0.992, p less than 0.001) between the relative renal uptake of 99mTc-DMSA (2 hour) and that of 99mTc-DTPA (2-3 min). On the contrary, the absolute renal uptake of 99mTc-DMSA as a indicator of total renal function showed a poor correlation (r = 0.419) to GFR calculated from 99mTc-DTPA. The results indicate that the relative renal uptake of 99mTc-DMSA is a reliable quantitative parameter for split renal function. However, the absolute renal uptake of 99mTc-DMSA may be suggested to be a different renal functioning indicator from GFR calculated from 99mTc-DTPA.
Itoh
K
K
Department of Nuclear Medicine, Hokkaido University School of Medicine.
Asano
Y
Y
Kato
C
C
Nakada
K
K
Nagao
K
K
Goto
T
T
Nonomura
K
K
Furudate
M
M
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D015609:Organotechnetium Compounds; D004369:Pentetic Acid; D011866:Radioisotope Renography; D004113:Succimer; D013438:Sulfhydryl Compounds; D019783:Technetium Tc 99m Dimercaptosuccinic Acid; D016284:Technetium Tc 99m Pentetate
D015609:Organotechnetium Compounds; D013438:Sulfhydryl Compounds; D019783:Technetium Tc 99m Dimercaptosuccinic Acid; D004369:Pentetic Acid; D004113:Succimer; D016284:Technetium Tc 99m Pentetate