국가연구개발성과
논문 (학술지)
A 40-MHz Ultrasound Transducer with an Angled Aperture for Guiding Percutaneous Revascularization of Chronic Total Occlusion: A Feasibility Study
| 등록번호 | RPMS-2019-0190744703 | SCI 구분
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※구분 : SCI(SCIE포함), 비SCI |
SCI |
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| 저자명 (주·공동저자) | Lee Junsu ; 장진호 ※ 과제 참여정보와 일치하는 연구자 상세정보로 정확하지 않을 수 있습니다. 동일저자 논문보기 |
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| 논문구분 | 국외전문학술지 | 학술지명 | SENSORS |
| ISSN | 1424-8220 | 학술지 출판일자 | 2018-11-21 |
| 학술지 볼륨번호 | 18 | 논문페이지 | 0 ~ 0 |
| 학술지 임팩트팩터 | 0.0 | 기여율 | 100 % |
| DOI | 10.3390/s18114079 | ||
| 초록 | Complete blockage of a coronary artery, called chronic total occlusion (CTO), frequently occurs due to atherosclerosis. To reopen the obstructed blood vessels with a stent, guidewire crossing is performed with the help of angiography that can provide the location of CTO lesions and the image of guidewire tip. Since angiography is incapable of imaging inside a CTO lesion, the surgeons are blind during guidewire crossing. For this reason, the success rate of guidewire crossing relies upon the proficiency of the surgeon, which is considerably reduced from 69.0% to 32.5% if extensive calcification, not penetrated by a guidewire, exists in CTO lesions. In this paper, a recently developed 40-MHz forward-looking intravascular ultrasound (FL？IVUS) transducer to visualize calcification within CTO lesions is reported. This transducer consists of a single element angled aperture and a guidewire passage. The aperture is spherically deformed to have a focal length of 3 mm in order to improve spatial resolution of FL？IVUS images. The angle between the beam direction and the axis of rotation is designed to be 30° to effectively visualize calcification within a CTO lesion as well as the blood vessel wall. The experimental results demonstrated that the developed FL？IVUS transducer facilitates visualization of calcification within CTO lesions and makes it possible to help the surgeon make decisions about whether to push the guidewire in order to cross the lesion or to change the surgical procedure | ||
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