Results 131 to 140 of about 10,638 (165)
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IVUS catheter motion: implications for ultrasonic speckle and correction in IVUS palpography
SPIE Proceedings, 2008Intravascular Ultrasound (IVUS) palpography is a techniques that depicts the distribution of the mechanical strain over the luminal surface of coronary arteries. It utilizes conventional radiofrequency (RF) signals acquired at two different levels of a compressional load.
Danilouchkine, Mikhail G. +2 more
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Reconstructive compounding for IVUS palpography
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2009This study proposes a novel algorithm for luminal strain reconstruction from sparse irregularly sampled strain measurements. It is based on the normalized convolution (NC) algorithm. The novel extension comprises the multilevel scheme, which takes into account the variable sampling density of the available strain measurements during the cardiac cycle ...
Danilouchkine, Mike +2 more
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Irish Journal of Medical Science, 1987
We performed a retrospective study of 134 patients presenting at an Accident and Emergency department with ureteric colic, to determine if the presence of dipstick haematuria could be used as a screening test for the presence of a calculus.
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We performed a retrospective study of 134 patients presenting at an Accident and Emergency department with ureteric colic, to determine if the presence of dipstick haematuria could be used as a screening test for the presence of a calculus.
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Quantitative IVUS Flow Estimation
2003Coronary flow assessment can be useful for determining the heamodynamic severity of a stenosis and evaluate the outcome of interventional therapy. We developed a method for measuring the transverse flow through the imaging plane of an intravascular ultrasound catheter.
van der Steen, Ton +7 more
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Intravascular ultrasound: Virtual histology IVUS, integrated backscatter IVUS, and palpography
Current Cardiovascular Imaging Reports, 2009The concept of the vulnerable plaque is the focus of much research, although our knowledge of the histology, pathobiology, natural history, and therapy of vulnerable plaque remains incomplete. The evolving intravascular ultrasound technologies of virtual histology, integrated backscatter, and palpography have yielded complementary information to ...
Michael A. Gaglia +2 more
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Quantitative measurements in IVUS images
The International Journal of Cardiac Imaging, 1999IntraVascular UltraSound (IVUS) is a catheter-based technique which provides real-time high resolution tomographic images of both the lumen and arterial wall of a coronary segment, this in contrast to X-ray arteriography that provides a shadow image (luminogram) of the entire lumen.
J, Dijkstra, G, Koning, J H, Reiber
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X-IVUS: integrated x-ray and IVUS system for the Cathlab
SPIE Proceedings, 2005Percutaneous Transluminal Coronary Angioplasty is currently the preferred method for coronary artery disease treatment. Angiograms depict residual lumen, but lack information about plaque characteristics and exact geometry. During instrument positioning, intracoronary characterization at the current instrument location is desirable.
Barbara Martin-Leung +3 more
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Vascular tissue characterisation with IVUS elastography
Ultrasonics, 2000Knowledge about the mechanical properties of the vessel wall and plaque is important for guiding intravascular interventional procedures and detection of plaque vulnerability. Rupture of atherosclerotic plaques is associated with acute myocardial infarction and unstable angina pectoris.
de Korte, C.L. +4 more
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La radiologia medica, 2008
A review of the literature on the diagnostic accuracy of multidetector computed tomography urography (MDCTU) and intravenous urography (IVU) reveals a lack of comparative studies. However, the available data indicate that MDCTU has a high diagnostic accuracy. MDCTU is also preferred by patients, as it does not require bowel preparation. Full acceptance
Stacul F +2 more
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A review of the literature on the diagnostic accuracy of multidetector computed tomography urography (MDCTU) and intravenous urography (IVU) reveals a lack of comparative studies. However, the available data indicate that MDCTU has a high diagnostic accuracy. MDCTU is also preferred by patients, as it does not require bowel preparation. Full acceptance
Stacul F +2 more
openaire +3 more sources