Split renal function measured by triphasic helical CT.
OBJECTIVE
To present a method for calculating split renal function solely from routine triphasic helical computed tomography (CT).


METHODS
We retrospectively included 26 adult patients who received renal scintigraphy and triphasic CT within 4 weeks in the years 2003 and 2004. All scans were performed using a standard abdominal protocol. Split renal function was calculated as relative single-kidney glomerular filtration rate (GFR) using a simplified "two-point Patlak plot" technique. As a reference method, split renal function was determined from renal scintigraphy using the standard technique.


RESULTS
Linear correlation between the two methods was r=0.91, split renal function (CT)=0.0266+0.9573 x split renal function (scintigraphy).


CONCLUSIONS
Split renal function can be measured accurately by minimally extended triphasic CT.
Hackstein
Nils
N
Radiologische Gemeinschaftspraxis am Evangelischen Krankenhaus, Paul-Zipp-Str. 171, 35398 Giessen, Germany. nils.hackstein@radiol.med.uni-giessen.de
Buch
Thomas
T
Rau
Wigbert S
WS
Weimer
Rolf
R
Klett
Rigobert
R
D000328:Adult; D000368:Aged; D003287:Contrast Media / Q000493:pharmacokinetics*; D005260:Female; D005919:Glomerular Filtration Rate; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging / Q000502:physiology*; D007677:Kidney Function Tests / Q000379:methods*; D008297:Male; D008433:Mathematics; D008875:Middle Aged; D011877:Radionuclide Imaging; D012189:Retrospective Studies; D036542:Tomography, Spiral Computed
D003287:Contrast Media