Arterial imaging with a new forward-viewing intravascular ultrasound catheter, II. Three-dimensional reconstruction and display of data.

Ng, K H; Evans, James L.; Vonesh, Michael J.; Meyers, Sheridan N.; Mills, T A; Kane, Bonnie J.; Aldrich, W N; Jang, Yangsoo; Yock, Paul G.; Rold, M D

doi:10.1161/01.cir.89.2.718

Cited by 54 publications

(11 citation statements)

References 24 publications

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“…Ng et al demonstrated a catheter, 4 mm in diameter, that is capable of transmitting 20 MHz ultrasound forward. 30 Although the ultrasound energy of that device may be smaller than our device, the technology of forward ultrasound probe permits an optimal clinical application of a combination of intracoronary thrombolysis and simultaneous imaging. This method is expected to be extremely useful in cases of thrombus-rich coronary occlusion.…”

Section: Discussionmentioning

confidence: 99%

Histological Observations and the Process of Ultrasound Contrast Agent Enhancement of Tissue Plasminogen Activator Thrombolysis With Ultrasound Exposure

et al. 1999

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Section: Discussionmentioning

confidence: 99%

Histological Observations and the Process of Ultrasound Contrast Agent Enhancement of Tissue Plasminogen Activator Thrombolysis With Ultrasound Exposure

et al. 1999

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“…Intracoronary angioscopy and conventional (side-looking) intravascular ultrasound can delineate the structure of stenotic, nonoccluded lesions; however, these techniques require crossing the lesion with a guidewire prior to imaging. A prototype version of a real-time, forward-looking intravascular ultrasound device was developed [6,7] and reported to be suitable for intracoronary use [8]. The forward-looking ultrasound device produces images of the artery in longitudinal cross-section; however, it is currently too bulky (5 Fr diameter) for use as a guiding device for chronic coronary occlusions.…”

Section: Discussionmentioning

confidence: 99%

Optical coherent reflectometry: A new technique to guide invasive procedures

Yamashita

Kasaoka

Son

et al. 2001

Cathet Cardio Intervent

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The success rate of percutaneous transluminal coronary angioplasty for chronic total arterial occlusions is still unsatisfactory. Inability to cross the lesion with a guidewire is a major cause of failure. Optical coherent reflectometry (OCR) is a new method of using laser light to measure the depth of tissue from the end of an optic fiber. This study tests whether an OCR prototype guidewire provides a guidance system that might be useful to assist reopening chronic total arterial occlusions. An OCR fiber optic within a 0.014″ hypotube was developed using the interference pattern of two reflected light beams (wave length 1,300 nm). To determine if OCR can distinguish different tissue types, plaques of human lower extremity arterial segments were visually divided into three types (calcified, white, or yellow). The slope of the initial reflectance of the OCR curve was calculated and compared between the three groups. In six other arteries, the OCR wire was advanced longitudinally through occluded human artery segments in vitro. Guidewire position was determined by OCR and compared to the position of the guidewire tip observed simultaneously by intravascular ultrasound (IVUS) imaging. In 16 arterial surface segments, calcified plaques had a significantly steeper slope than white or yellow plaques (−227.2 ± 82.2; −81.5 ± 12.9; −103.6 ± 19.6 dB/mm; P < 0.01). For the determination of the guidewire position, IVUS and OCR corresponded correctly in 82% of 28 measurements. Sensitivity and specificity of OCR for detection of plaque versus the media/adventitia boundary were 79% and 89%, respectively (P < 0.001). OCR can distinguish calcified from noncalcified plaque and may distinguish plaque from the media/adventitia boundary. This technology may be useful as a means to help navigate a guidewire safely through an occluded artery. Cathet Cardiovasc Intervent 2001;54:257–263. © 2001 Wiley‐Liss, Inc.

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“…The availability of images ahead of the catheter tip would obviate the need for the side branch to advance the IVUS catheter, and therefore new forward-viewing catheters are under development [24,25] which can provide precise information of the CTO entry site and, combined with 3-dimesional reconstruction techniques, allow to visualize the lesion distal to the occlusion and provide real-time road maps of occluded vessels [24,25]. However, the prototype of forward-viewing IVUS catheter is too large for use in coronary arteries [24,25]; its miniaturization can facilitate the successful recanalizaion of stumpless CTO lesions.…”

Section: Discussionmentioning

confidence: 99%

Intravascular ultrasound guided recanalization of stumpless chronic total occlusion

Park

Jang

et al. 2011

International Journal of Cardiology

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Arterial imaging with a new forward-viewing intravascular ultrasound catheter, II. Three-dimensional reconstruction and display of data.

Abstract: These preliminary data demonstrate the feasibility of 3DR of forward-viewing IVUS data. This method allows rapid, detailed analysis of diseased arterial segments previously unavailable with standard IVUS and may permit better targeting of interventional techniques.

Cited by 54 publications

References 24 publications

Histological Observations and the Process of Ultrasound Contrast Agent Enhancement of Tissue Plasminogen Activator Thrombolysis With Ultrasound Exposure

Histological Observations and the Process of Ultrasound Contrast Agent Enhancement of Tissue Plasminogen Activator Thrombolysis With Ultrasound Exposure

Optical coherent reflectometry: A new technique to guide invasive procedures

Intravascular ultrasound guided recanalization of stumpless chronic total occlusion

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