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Titolo:
In vitro and in vivo comparison of three different intravascular ultrasound catheter designs
Autore:
Fort, S; Freeman, NA; Johnston, P; Cohen, EA; Foster, FS;
Indirizzi:
Univ Toronto, Hlth Sci Ctr, Schulich Heart Ctr, Sunnybrook & Womens Coll, Toronto, ON M4N 3M5, Canada Univ Toronto Toronto ON Canada M4N 3M5 Coll, Toronto, ON M4N 3M5, Canada Univ Toronto, Dept Biophys, Toronto, ON M4N 3M5, Canada Univ Toronto Toronto ON Canada M4N 3M5 ophys, Toronto, ON M4N 3M5, Canada
Titolo Testata:
CATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS
fascicolo: 3, volume: 52, anno: 2001,
pagine: 382 - 392
SICI:
1522-1946(200103)52:3<382:IVAIVC>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORONARY-ARTERY DISEASE; ANGIOPLASTY; ANGIOGRAPHY; IMMEDIATE; PHANTOMS; SAFETY;
Keywords:
intravascular ultrasound; high frequency;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Fort, S Univ Toronto, Hlth Sci Ctr, Schulich Heart Ctr, Sunnybrook & Womens Coll, Room D-377,2075 Bayview Ave, Toronto, ON M4N 3M5, Canada Univ Toronto Room D-377,2075 Bayview Ave Toronto ON Canada M4N 3M5
Citazione:
S. Fort et al., "In vitro and in vivo comparison of three different intravascular ultrasound catheter designs", CATHET C IN, 52(3), 2001, pp. 382-392

Abstract

Intravascular ultrasound (IVUS) is an invasive imaging modality which provides detailed two-dimensional images of blood vessels. There are currently two different types of IVUS catheters available, namely, the phased-array and the mechanical designs. The operating ultrasound frequency of these catheters ranges from 20 to 40 MHz. This study sought to evaluate the image quality, accuracy of diameter and pullback length measurements, and catheter handling characteristics of three different IVUS catheters currently available for clinical use using both in vitro phantom models and in patients undergoing percutaneous coronary intervention (PCI). in gelatin phantom models,image quality assessed on a semiquantitative scale was significantly different between the three IVUS catheters (P = 0.01) with the 40-MHz catheter providing the best images. Accuracy of lumen diameter measurements, when compared to optical microscopy, were similar between the three IVUS catheter designs (all R-2 = 0.99). There were no significant differences in accuracy of pullback length measurements in vitro between the three designs. However, there were differences in the performance of the three IVUS catheters when used for preinterventional imaging in patients undergoing PCI. Both mechanical IVUS catheters were associated with lower procedural, fluoroscopy, and lesion crossing times compared to the phased-array catheter (all P < 0.05). There were no significant differences between the catheters during postinterventional IVUS imaging. There were also small but potentially importantdifferences with regards to clinical events and complications associated with the use of the different IVUS catheters during the PCI procedures, reflecting differences in catheter design. (C) 2001 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/01/20 alle ore 21:01:16