Journal of cardiovascular computed tomography
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J Cardiovasc Comput Tomogr · Jul 2012
Case ReportsMitral annuloplasty ring dehiscence demonstrated by preablation cardiac computed tomographic angiography: influence on radiofrequency ablation of atrial fibrillation.
We present a case that demonstrates mitral valve annuloplasty ring dehiscence discovered on a cardiac computed tomography imaging study performed prior to radiofrequency ablation for atrial fibrillation. We describe the relevant imaging findings and the clinical implications this finding has on catheter selection and patient safety during a radiofrequency ablation procedure.
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J Cardiovasc Comput Tomogr · Nov 2011
Incremental value of myocardial perfusion over regional left ventricular function and coronary stenosis by cardiac CT for the detection of acute coronary syndromes in high-risk patients: a subgroup analysis of the ROMICAT trial.
To determine the incremental benefit of assessing myocardial perfusion defects (MPD) for acute coronary syndromes (ACS) over coronary and functional assessment by rest cardiac computed tomography (CT) in patients with acute chest pain. ⋯ Assessment of myocardial perfusion and regional wall motion abnormalities may enhance the ability of CT to detect ACS in patients with acute chest pain.
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J Cardiovasc Comput Tomogr · Sep 2011
Multicenter Study Clinical TrialRationale and design of the DeFACTO (Determination of Fractional Flow Reserve by Anatomic Computed Tomographic AngiOgraphy) study.
Coronary computed tomographic angiography (CTA) allows for noninvasive identification of anatomic coronary artery disease (CAD) severity but does not discriminate whether a stenosis causes ischemia. Computational fluid dynamic techniques applied to CTA images now permit noninvasive computation of fractional flow reserve (FFR), a measure of lesion-specific ischemia, but the diagnostic performance of computed FFR (FFR(CT)) as compared with measured FFR at the time of invasive coronary angiography remains unexplored. ⋯ The DeFACTO study will determine whether the addition of FFR(CT) to conventional CTA improves the diagnosis of hemodynamically significant CAD.
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J Cardiovasc Comput Tomogr · Sep 2011
Case ReportsPseudoaneurysm of the mitral-aortic intervalvular fibrosa: a delayed complication of aortic root replacement.
A 41-year-old male with prior history of aortic root replacement for infectious endocarditis was found to have a pseudoaneurysm in the fibrous continuity between the aortic and mitral valves: the so called "mitral-aortic intervalvular fibrosa." Preoperative cardiac-gated computed tomographic angiography and intraoperative transesophageal echocardiography imaging findings used to guide surgical repair are presented.