By Vasilios D. Tsakanikas, Lampros K. Michalis, Dimitrios I. Fotiadis, Katerina K. Naka, Christos V. Bourantas
Limitations of angiography, the conventional invasive approach for assessing vascular pathology, have resulted in an curiosity in substitute invasive recommendations that visualize the arterial wall and make allowance characterization of plaque variety. those replacement strategies, which come with intravascular ultrasound, angioscopy, thermography, optical coherence tomography, close to infrared spectroscopy, and intravascular magnetic resonance imaging may be able to offer priceless information about plaque vulnerability, the composition of plaque, and luminal morphology.
Intravascular Imaging: present purposes and learn Developments offers all on hand intravascular imaging strategies and analyzes their effect in scientific perform and study. This e-book goals to notify clinical experts, biomedical engineers, bioinfomaticians, and researchers of present advancements and destiny traits in intravascular imaging strategies, selling persisted evolution of this discipline.
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Additional resources for Intravascular Imaging: Current Applications and Research Developments
Minimum and Maximum luminal diameter: Is the smallest and largest luminal diameter respectively. From these, the eccentricity of the lumen may be calculated: Eccentricity: 100 x (maximum - minimum luminal diameter) / maximum luminal diameter. Lumen area stenosis: Is defined as: 100 x (reference luminal CSA - minimum luminal CSA)/ reference luminal CSA. The reference segment used for the calculation should be stated (proximal, distal, largest or average). All measurements are obtained with regards to the center of the lumen and not to the center of the IVUS catheter.
Jr, & Tajik, A. (1990). Intravascular ultrasound imaging: in vitro validation and pathologic correlation. Journal of the American College of Cardiology, 16, 145–154. , & Grube, E. (2010). Long-term impact of routinely detected early and late incomplete stent apposition: an integrated intravascular ultrasound analysis of the TAXUS IV, V, and VI and TAXUS ATLAS workhorse, long lesion, and direct stent studies. JACC: Cardiovascular Interventions, 3(5), 486–494. , & Choi, S. (2010). Virtual histology intravascular ultrasound analysis of non-culprit attenuated plaques detected by grayscale intravascular ultrasound in patients with acute coronary syndromes.
Each stent has a different acoustic appearance depending on its design (Figures 7c-d and Figure 8). Multicellular or slotted-tube stents appear as focal echogenic (metallic) points, while coiled stents appear as echogenic arcs that occupy entire sections of the vessel wall. The stent apposition refers to the deployment of the stent struts in relation to the vessel wall. Good apposition is defined as a sufficient contact of the struts against the vessel wall that does not allow blood flow between them (Figure 7c).