By Marc Dewey (auth.)
Computed tomography of the guts has develop into a hugely exact diagnostic modality that's attracting expanding consciousness. This largely illustrated booklet goals to aid the reader in integrating cardiac CT into day-by-day scientific perform, whereas additionally reviewing its present technical prestige and functions. transparent suggestions is equipped at the functionality and interpretation of imaging utilizing the newest expertise, which deals higher insurance, greater spatial answer, and speedier imaging. the categorical positive aspects of scanners from all 4 major owners, together with those who have just recently develop into to be had, are offered. one of the wide variety of purposes and concerns to be mentioned are coronary artery pass grafts, stents, plaques, and anomalies, cardiac valves, congenital and bought middle illness, and radiation publicity. Upcoming scientific makes use of of cardiac CT, resembling plaque imaging and practical overview, also are explored.
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Additional resources for Cardiac CT
After stenting, cardiac CT can be used to exclude instent obstruction of large-diameter stents in proximal coronary arteries. In-stent restenosis in an (unprotected) left main stent may have serious consequences. Because stress testing is considered less reliable, conventional coronary angiography is routinely performed after 3–6 months. , no bifurcation stenting) has been performed. After bypass graft surgery, CT can be of use to exclude graft obstruction. As subclinical occlusion may exist for years, because of competitive antegrade or collateral flow, assessment of the significance of an occluded graft late after revascularization requires some kind of functional imaging.
12), but mostly by the presence of (native) coronary artery disease, which is often diffuse. In particular the more abundant presence of calcified plaque reduces the reliability of cardiac CT angiography. More over, CT angiography does not have the ability to determine the hemodynamic significance of lesions, which may be unpredictable in the presence of collateral perfusion of the myocardium. This may be overcome with the development of stress myocardial perfusion CT or some kind of combination of coronary CT angiography and stress imaging.
5. 6. 7. Longer duration of the occlusion Absence of antegrade collateral filling Blunt rather than a tapered proximal stump Occlusion length >15 mma Severe calcificationa Side branch at the occlusion site Vessel tortuosity proximal to the occlusion Predictive value confirmed by CT a Prior to percutaneous implantation of aortic valves, cardiac CT can provide information concerning the size, shape, and angulation of the aortic root. This information is important for planning the procedure and selecting the size of the valve prosthesis.