Results 211 to 220 of about 69,059 (253)
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Ultrasonics, 1998
Based on three-dimensional (3D) information, quantitative data such as plaque volume can be calculated. The procedure includes automatic contour detection based in image segmentation methods and greatly speeds up clinical evaluation. With the use of additional X-ray information, the true tortuous vessel geometry can be reconstructed in 3D. This allows,
N, Bom +6 more
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Based on three-dimensional (3D) information, quantitative data such as plaque volume can be calculated. The procedure includes automatic contour detection based in image segmentation methods and greatly speeds up clinical evaluation. With the use of additional X-ray information, the true tortuous vessel geometry can be reconstructed in 3D. This allows,
N, Bom +6 more
openaire +4 more sources
Image reconstruction in intravascular photoacoustic imaging
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2011Intravascular photoacoustic (IVPA) imaging is a technique for visualizing atherosclerotic plaques with differential composition. Unlike conventional photoacoustic tomography scanning, where the scanning device rotates around the subject, the scanning aperture in IVPA imaging is enclosed within the imaged object.
Yae-lin, Sheu +3 more
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Intravascular ultrasound and photoacoustic imaging
2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2008There is a need for an imaging technique that can reliably identify and characterize the vulnerability of atherosclerotic plaques. Catheter-based intravascular ultrasound (IVUS) is one of the imaging tools of the clinical evaluation of atherosclerosis. However, histopathological information obtained with IVUS imaging is limited.
Stanislav, Emelianov +8 more
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Intravascular ultrasound image interpretation
Proceedings of 13th International Conference on Pattern Recognition, 1996In this study, statistical and fractal texture analysis was used to assess the ability of 30 MHz intravascular ultrasound (IVUS) data, in raw and scan-converted form, to characterise atherosclerotic plaque. Data from 3 different plaque groups was assessed in the study: 1) loose fibrotic tissue; 2) dense fibrotic tissue; and 3) calcium.
William H. Nailon +3 more
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Intravascular Magnetic Resonance Imaging
Topics in Magnetic Resonance Imaging, 2007The purpose of this article is to review the current state of the art with respect to intravascular magnetic resonance imaging, including intravascular coils, their implementation for plaque identification and characterization, and strategies for future approaches to coronary imaging and other cardiovascular applications.
Victor A, Ferrari, Robert L, Wilensky
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Resolution limitations in intravascular ultrasound imaging
IEEE 1991 Ultrasonics Symposium, 1993Interest in the use of ultrasound to characterize the structure and composition of blood vessel walls has risen dramatically as a result of the development of intravascular ultrasonic imaging transducers mounted on the tips of small-diameter catheters.
P J, Benkeser +3 more
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Intravascular imaging methods for venous disorders
International Journal of Angiology, 2000The purposes are to assess the problems associated with intravascular imaging methods such as angioscopy and intravascular ultrasound (IVUS) and to evaluate their efficacy through the results of our observations. A total of 54 limbs in 53 patients, 50 patients with chronic venous insufficiency and 3 patients with deep vein thrombosis, were diagnosed ...
, Satokawa +5 more
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Tissue characterization in intravascular ultrasound images
IEEE Transactions on Medical Imaging, 1998Intravascular ultrasound (IVUS) imaging permits direct visualization of vascular pathology. It has been used to evaluate lumen and plaque in coronary arteries and its clinical significance for guidance of coronary interventions is increasingly recognized. Conventional manual evaluation is tedious and time-consuming.
Xiangmin Zhang +2 more
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Intravascular Imaging and Haemodynamics
2011Shear stress on the endothelial surface has been implicated in atherosclerosis localization, plaque vulnerability, and remodeling behavior of the arterial wall, as well as in-stent restenosis following percutaneous coronary interventions. The purposes of this chapter are to introduce haemodynamic shear stress, briefly explain the methodology for ...
Michail I. Papafaklis +1 more
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Clinical Utility of Intravascular Imaging
JACC: Cardiovascular Imaging, 2022Akiko Maehara +2 more
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