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Titolo:
FORWARD-LOOKING INTRAVASCULAR ULTRASONOGRAPHY - IN-VITRO IMAGING OF NORMAL AND ATHEROSCLEROTIC HUMAN ARTERIES
Autore:
BACK MR; KOPCHOK GE; WHITE RA; SCOCCIANTI M; DONAYRE CE; MAEUSER H; BRENER B;
Indirizzi:
UCLA,HARBOR MED CTR,DEPT SURG,1000 W CARSON ST,BOX 11,POB 2910 TORRANCE CA 90509 UCLA,HARBOR MED CTR,DEPT SURG,1000 W CARSON ST,BOX 11,POB 2910 TORRANCE CA 90509 NEWARK BETH ISRAEL MED CTR,DEPT SURG NEWARK NJ 07112
Titolo Testata:
The American surgeon
fascicolo: 10, volume: 60, anno: 1994,
pagine: 738 - 743
SICI:
0003-1348(1994)60:10<738:FIU-II>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTRACORONARY ULTRASOUND; ANGIOPLASTY; RECANALIZATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
M.R. Back et al., "FORWARD-LOOKING INTRAVASCULAR ULTRASONOGRAPHY - IN-VITRO IMAGING OF NORMAL AND ATHEROSCLEROTIC HUMAN ARTERIES", The American surgeon, 60(10), 1994, pp. 738-743

Abstract

Inadequate guidance of angioplasty devices limits the endoluminal treatment of high grade atherosclerotic stenoses and total occlusions. Conventional intraluminal ultrasound systems (IVUS) enable lateral cross-sectional imaging of tomographic sections of the vessel wall, but do not offer imaging in front of the catheter. This study describes our initial experience with a forward-looking intravascular ultrasound (FL-IVUS) system (Echoeye, EchoCath, Inc., Princeton, NJ). The acoustic beam from a 25.5 MHz piezoelectric transducer on a 7.5 Fr catheter is mechanically rotated in a forward-looking spiral fashion at 300 cycles/second. Sixty-four axially aligned, cross-sectional, real time images are obtained from a turncated, 60 degree conical volume located 5 to 10mm from the catheter tip. Luminal dimensions (n = 51) of human cadaveric femoral arteries (cast in agar and submerged in saline) measured by the FL-IVUS were compared to histologic cross-sections of the vesselwith a correlation of r = 0.92. FL-IVUS accurately imaged the narrowing lumen in front of total occlusions and the geometry at vessel branches, and identified the location of lesions and the shape and morphology of vessel wall thickness. The 7.5 Fr FL-IVUS over-estimated luminaldimensions in vessels larger than 5 mm. We conclude that FL-IVUS imaging shows promise as a new, accurate method for identifying and characterizing high grade atherosclerotic stenoses and total occlusions, andexpands the current capabilities of conventional IVUS systems.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 10:34:23