WebIntravascularultrasound (IVUS) sequences recorded in vivo are subject to a wide array of motion artifacts as the majority of these studies are performed within the coronary arteries of a beating heart. To eliminate these artifacts, an electrocardiogram (ECG) signal is typically used to gate (collect … WebThe electrocardiographically gated acquisition of five IVUS images per mm axial le … The width of the sample spacing has a relatively small but significant impact on the variability of volumetric intravascular ultrasound measurements. This should be considered when designing future volumetric studies.

GitHub - dmolony3/DeepIVUS: Platform for deep learning …

WebMethods such as IVUS elastography have been introduced to assess mechanical properties of the vessel wall, which may relate indirectly to the histopathological composition of the atherosclerotic plaque.23 Intravascular elastography is ob-tained from cardiac-gated IVUS images coupled with intralu-minal pressures during the cardiac cycle. WebAug 1, 1997 · Three IVUS criteria, based on the experience of the Milan group 5, 6 and our own data [11], were used to define optimal stent deployment: 1) apposition = complete stent apposition to vessel wall along the entire stented segment; 2) symmetry = ratio of minimal/maximal stent diameter (stent symmetry index) ≥0.7; 3) expansion = ratio of … bnp boissy

An IVUS image-based approach for improvement of coronary …

WebMay 1, 2024 · Intravascular Ultrasound (IVUS) is a widely used interventional imaging technique for the assessment of atherosclerosis plaque. Due to pulsatile heart motions, transverse and longitudinal motions... Twenty coronary arteries from six consecutive patients in sinus rhythm who were recruited to the “Evaluation of the efficacy of computed tomographic coronary angiography (CTCA) in assessing coronary artery morphology and physiology” study (NCT03556644), were included in the present analysis. The … See more NIRS-IVUS imaging was performed using the 50 MHz Dualpro system (Infraredx, Burlington, Massachusetts, United States) according to a standardised protocol. After administration of 400mcg of nitrates the NIRS-IVUS probe … See more We propose a novel DL-methodology for identifying end-diastolic frames in NIRS-IVUS sequences. The methodology consists of several … See more Analysis was performed by two well-trained analysts (RB and YK) who have segmented > 375,000 NIRS-IVUS frames. The two analysts reviewed the digital-video files that … See more CIB-gating was performed in the NIRS-IVUS data using a special version of the QCU-CMS software (version 4.69, Leiden University Medical Center, Leiden, The Netherlands) by … See more WebNov 11, 2024 · In the IVUS analysis, to remove diameter variations as observed in the images obtained by a continuous IVUS pullback due to cardiac contraction, the images were gated by using an in-house ... bnp cap joliette