Magnetic resonance, a new method for measuring blood flow in hemodialysis fistulae.
Blood flow through arteriovenous fistulae in patients undergoing hemodialysis needs to be within a certain range for optimal management. Magnetic resonance (MR) velocity mapping is a new modality that allows the noninvasive measurement of blood flow volume. This technique was applied in 13 patients with either a Brescia-Cimino shunt (N = 6) or a Polytetrafluoroethylene graft (Goretex, N = 7). Fistula flow volume measured by MR velocity mapping was 1386 +/- 411 ml/min (mean +/- SD, range 644 to 1921 ml/min). Interstudy reproducibility of MR velocity mapping was good (r = 0.94). Interstudy reproducibility of MR velocity mapping was good (r = 0.94). MR velocity mapping derived flow volumes showed good correlation with values obtained with an indicator dilution technique using Indocyanine Green (ICG) which was performed simultaneously in eight patients (r = 0.86). We conclude that MR velocity mapping is an accurate noninvasive method to quantify flow volume through arteriovenous fistulae in patients requiring hemodialysis.
Oudenhoven
L F
LF
Department of Diagnostic Radiology, University Hospital, Leiden, The Netherlands.
Pattynama
P M
PM
de Roos
A
A
Seeverens
H J
HJ
Rebergen
S A
SA
Chang
P C
PC
D000328:Adult; D000368:Aged; D001164:Arteriovenous Fistula / Q000503:physiopathology*; D001783:Blood Flow Velocity / Q000502:physiology*; D005260:Female; D006801:Humans; D007208:Indocyanine Green; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012039:Regional Blood Flow / Q000502:physiology; D006435:Renal Dialysis; D015203:Reproducibility of Results
D007208:Indocyanine Green