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Titolo:
VIRTUAL INTRAVASCULAR ENDOSCOPY IN THE RE NAL-ARTERIES - A NEW WAY OFREADING 3-D MR-ANGIOGRAPHY DATASETS
Autore:
DAVIS CP; LADD ME; GOHDE SC; PFAMMATTER T; FASS L; DEBATIN JF;
Indirizzi:
UNIV ZURICH HOSP,DEPT MED RADIOL,MRI ZENTER,RAMISTR 100 CH-8091 ZURICH SWITZERLAND UNIV ZURICH HOSP,DEPT MED RADIOL,MRI ZENTER CH-8091 ZURICH SWITZERLAND
Titolo Testata:
RoFo. Fortschritte auf dem Gebiete der Rontgenstrahlen und der neuenbildgebenden Verfahren
fascicolo: 3, volume: 165, anno: 1996,
pagine: 257 - 263
SICI:
0936-6652(1996)165:3<257:VIEITR>2.0.ZU;2-J
Fonte:
ISI
Lingua:
GER
Soggetto:
ULTRASOUND IMAGES; RECONSTRUCTION; AORTA;
Keywords:
RENAL ARTERIES; INTRAVASCULAR ENDOSCOPY; MAGNETIC RESONANCE ANGIOGRAPHY; VIRTUAL REALITY; POSTPROCESSING TECHNIQUES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
C.P. Davis et al., "VIRTUAL INTRAVASCULAR ENDOSCOPY IN THE RE NAL-ARTERIES - A NEW WAY OFREADING 3-D MR-ANGIOGRAPHY DATASETS", RoFo. Fortschritte auf dem Gebiete der Rontgenstrahlen und der neuenbildgebenden Verfahren, 165(3), 1996, pp. 257-263

Abstract

Purpose: To determine the potentials and limitations of a recently developed algorithm for virtual intravascular endoscopy (VIE) based on 3-dimensional (3-D) magnetic resonance (MR) data sets. Method: The datafrom 6 patients derived from gadolinium-enhanced MR angiography of the renal arteries were reviewed. All patients had unilateral or bilateral renal arterial pathologies (stenoses n=2, aneurysms n=4). Imaging was performed on a 1.5-T scanner using a 3-D gradient-echo MR sequence. The imaging parameters were as follows: T-R/T-E/flip angle 3.9/1.9/40degrees, matrix 256x192, slice thickness 1.5 to 2 mm, FOV 32 cm, and 48 slices. Image acquisition time was 28 seconds under apnoeia conditions. A total of 60 mi 0.5 molar Gd-DTPA was injected during the scan. Results: 3-D data sets could be obtained in all patients and postprocessed for VIE. The intraluminal vessel wall was depicted with high clarity in all cases. All pathologies that were not intraparenchymal couldbe easily seen. Limitations to the technique include the image quality of the original data set, use of the ideal threshold to minimise intraluminal artifacts, and a complicated prescription sequence. Conclusions: We have shown that VIE can be consistently performed in the renalarteries using MR data sets acquired with a contrast enhanced 3-D gradient-echo technique. It provides a hitherto unused approach to viewing 3-D vascular MR data sets.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 06:39:41