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Titolo:
BLOOD-FLOW QUANTIFICATION IN HEMODIALYSIS FISTULAS BY PHASE-CONTRAST MR-ANGIOGRAPHY (PC-MRA) IN COMPARISON TO DUPLEX SONOGRAPHY
Autore:
GUTBERLET M; VENZ S; KAHL A; EHRENSTEIN T; PULS R; HOSTEN N; FREI U; FELIX R;
Indirizzi:
HUMBOLDT UNIVERSITAT BERLIN,STRAHLENKLIN & POLIKLIN,FAK MED,CAMPUS VIRCHOW KLINIKUM D-13353 BERLIN GERMANY HUMBOLDT UNIVERSITAT BERLIN,ABT INNERE MED NEPHROL & INTENS MED,FAK MED D-13353 BERLIN GERMANY
Titolo Testata:
RoFo. Fortschritte auf dem Gebiete der Rontgenstrahlen und der neuenbildgebenden Verfahren
fascicolo: 2, volume: 169, anno: 1998,
pagine: 163 - 169
SICI:
0936-6652(1998)169:2<163:BQIHFB>2.0.ZU;2-#
Fonte:
ISI
Lingua:
GER
Soggetto:
MAGNETIC-RESONANCE ANGIOGRAPHY; COLOR DOPPLER SONOGRAPHY; HEMODIALYSIS FISTULAS; DIALYSIS SHUNTS; ACCESS; VISUALIZATION; LIMITATIONS; ANGIOPLASTY; DILUTION;
Keywords:
PHASE CONTRAST ANGIOGRAPHY; MAGNETIC RESONANCE IMAGING; HEMODIALYSIS FISTULAS; FLOW MEASUREMENTS; COLOR DUPLEX SONOGRAPHY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
M. Gutberlet et al., "BLOOD-FLOW QUANTIFICATION IN HEMODIALYSIS FISTULAS BY PHASE-CONTRAST MR-ANGIOGRAPHY (PC-MRA) IN COMPARISON TO DUPLEX SONOGRAPHY", RoFo. Fortschritte auf dem Gebiete der Rontgenstrahlen und der neuenbildgebenden Verfahren, 169(2), 1998, pp. 163-169

Abstract

Purpose: Aim of this study was to evaluate whether phase contrast MR angiography (PC-MRA) could provide additional functional information besides morphology in the assessment of haemodialysis fistulae. Material and method: Twenty-two patients (11 male, 11 female), aged 22-77 years, were examined. MR images were obtained with a 1.5 T Gyroscan(R) ACS-NT (Philips, Best, Netherlands) using a high-resolution wrap-around coil. In addition to MRA blood-flow measurements were performed with agradient-echo sequence (T-R 14 ms, T-E 5-5.5 ms, flip-angle 15 degrees, 6 mm slice thickness, retrospective gating, matrix 96:128) in the venous and arterial section of the fistulae. Doppler flow measurements were performed at the same position with a Sonoline Elegra(R) (SiemensAC, Erlangen) using a 7.5 MHz transducer. Results: Both methods of flow-volume measurements showed a good correlation (r = 0.94 in the arterial section, r = 0.90 in the venous section, p<0.001). The average calculated blood flow was measured 11%(arterial section) and 12.8% (venous section) higher with Pulsed Waved Doppler as compared to PC-MRA. Conclusion: PC-MRA with a high-resolution wrap-around coil is a reliablemethod for measuring functional parameters like flow-volume and flow velocity in haemodialysis fistulae and a useful complement to the visualisation capabilities of MRA.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/04/20 alle ore 15:40:25