First experience with imaging core wires.

C. Di Mario, T. Akiyama, I. Moussa, B. Reimers, Y. T. Jang, J. Tobis, A. Colombo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study is the first assessment of feasibility and clinical usefulness of an imaging wire. The device used is a 0.018" flexible cable mounting a 30 MHz piezoelectric crystal at the end. The only possible application of the wire in its current configuration is the assessment of balloon expansion with over-the-wire balloon catheters. In this study, 17 lesions were examined in 14 patients. Despite careful removal of the air, no image could be obtained with the balloon deflated or through the shaft of conventional balloon catheters. When the balloon was inflated to 1-4 atm the circular echo-free cross-section of the balloon became visible, surrounded by the dense line of the balloon membrane and by the vessel wall. By examining the stent area at different balloon pressures, it was possible to determine the stent recoil between maximal balloon expansion and lowest balloon pressure allowing a readable ultrasound image. These encouraging preliminary observations confirm the feasibility of the use of an ultrasound guidewire for monitoring balloon expansion during stent implantation. After high pressure inflation, a moderate reduction of the stent lumen was observed during deflation, compatible with the small recoil predicted for the stainless-steel mesh stent used.

Original languageEnglish
Pages (from-to)69-73
Number of pages5
JournalSeminars in interventional cardiology : SIIC
Volume2
Issue number1
Publication statusPublished - Mar 1997

Fingerprint

Stents
Pressure
Catheters
Stainless Steel
Economic Inflation
Air
Equipment and Supplies
Membranes

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Di Mario, C., Akiyama, T., Moussa, I., Reimers, B., Jang, Y. T., Tobis, J., & Colombo, A. (1997). First experience with imaging core wires. Seminars in interventional cardiology : SIIC, 2(1), 69-73.

First experience with imaging core wires. / Di Mario, C.; Akiyama, T.; Moussa, I.; Reimers, B.; Jang, Y. T.; Tobis, J.; Colombo, A.

In: Seminars in interventional cardiology : SIIC, Vol. 2, No. 1, 03.1997, p. 69-73.

Research output: Contribution to journalArticle

Di Mario, C, Akiyama, T, Moussa, I, Reimers, B, Jang, YT, Tobis, J & Colombo, A 1997, 'First experience with imaging core wires.', Seminars in interventional cardiology : SIIC, vol. 2, no. 1, pp. 69-73.
Di Mario C, Akiyama T, Moussa I, Reimers B, Jang YT, Tobis J et al. First experience with imaging core wires. Seminars in interventional cardiology : SIIC. 1997 Mar;2(1):69-73.
Di Mario, C. ; Akiyama, T. ; Moussa, I. ; Reimers, B. ; Jang, Y. T. ; Tobis, J. ; Colombo, A. / First experience with imaging core wires. In: Seminars in interventional cardiology : SIIC. 1997 ; Vol. 2, No. 1. pp. 69-73.
@article{281b632a5dde48ac971d8f3f961e4273,
title = "First experience with imaging core wires.",
abstract = "This study is the first assessment of feasibility and clinical usefulness of an imaging wire. The device used is a 0.018{"} flexible cable mounting a 30 MHz piezoelectric crystal at the end. The only possible application of the wire in its current configuration is the assessment of balloon expansion with over-the-wire balloon catheters. In this study, 17 lesions were examined in 14 patients. Despite careful removal of the air, no image could be obtained with the balloon deflated or through the shaft of conventional balloon catheters. When the balloon was inflated to 1-4 atm the circular echo-free cross-section of the balloon became visible, surrounded by the dense line of the balloon membrane and by the vessel wall. By examining the stent area at different balloon pressures, it was possible to determine the stent recoil between maximal balloon expansion and lowest balloon pressure allowing a readable ultrasound image. These encouraging preliminary observations confirm the feasibility of the use of an ultrasound guidewire for monitoring balloon expansion during stent implantation. After high pressure inflation, a moderate reduction of the stent lumen was observed during deflation, compatible with the small recoil predicted for the stainless-steel mesh stent used.",
author = "{Di Mario}, C. and T. Akiyama and I. Moussa and B. Reimers and Jang, {Y. T.} and J. Tobis and A. Colombo",
year = "1997",
month = "3",
language = "English",
volume = "2",
pages = "69--73",
journal = "Seminars in interventional cardiology : SIIC",
issn = "1084-2764",
publisher = "W.B. Saunders Ltd",
number = "1",

}

TY - JOUR

T1 - First experience with imaging core wires.

AU - Di Mario, C.

AU - Akiyama, T.

AU - Moussa, I.

AU - Reimers, B.

AU - Jang, Y. T.

AU - Tobis, J.

AU - Colombo, A.

PY - 1997/3

Y1 - 1997/3

N2 - This study is the first assessment of feasibility and clinical usefulness of an imaging wire. The device used is a 0.018" flexible cable mounting a 30 MHz piezoelectric crystal at the end. The only possible application of the wire in its current configuration is the assessment of balloon expansion with over-the-wire balloon catheters. In this study, 17 lesions were examined in 14 patients. Despite careful removal of the air, no image could be obtained with the balloon deflated or through the shaft of conventional balloon catheters. When the balloon was inflated to 1-4 atm the circular echo-free cross-section of the balloon became visible, surrounded by the dense line of the balloon membrane and by the vessel wall. By examining the stent area at different balloon pressures, it was possible to determine the stent recoil between maximal balloon expansion and lowest balloon pressure allowing a readable ultrasound image. These encouraging preliminary observations confirm the feasibility of the use of an ultrasound guidewire for monitoring balloon expansion during stent implantation. After high pressure inflation, a moderate reduction of the stent lumen was observed during deflation, compatible with the small recoil predicted for the stainless-steel mesh stent used.

AB - This study is the first assessment of feasibility and clinical usefulness of an imaging wire. The device used is a 0.018" flexible cable mounting a 30 MHz piezoelectric crystal at the end. The only possible application of the wire in its current configuration is the assessment of balloon expansion with over-the-wire balloon catheters. In this study, 17 lesions were examined in 14 patients. Despite careful removal of the air, no image could be obtained with the balloon deflated or through the shaft of conventional balloon catheters. When the balloon was inflated to 1-4 atm the circular echo-free cross-section of the balloon became visible, surrounded by the dense line of the balloon membrane and by the vessel wall. By examining the stent area at different balloon pressures, it was possible to determine the stent recoil between maximal balloon expansion and lowest balloon pressure allowing a readable ultrasound image. These encouraging preliminary observations confirm the feasibility of the use of an ultrasound guidewire for monitoring balloon expansion during stent implantation. After high pressure inflation, a moderate reduction of the stent lumen was observed during deflation, compatible with the small recoil predicted for the stainless-steel mesh stent used.

UR - http://www.scopus.com/inward/record.url?scp=0031082826&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031082826&partnerID=8YFLogxK

M3 - Article

C2 - 9546987

AN - SCOPUS:0031082826

VL - 2

SP - 69

EP - 73

JO - Seminars in interventional cardiology : SIIC

JF - Seminars in interventional cardiology : SIIC

SN - 1084-2764

IS - 1

ER -