Cardiac functional imaging

Transcatheter closure of a large coronary cameral fistula presenting as a calcified cystic right atrial mass

“…10,11 While the use of echocardiography led to functional understanding of the mass, the high spatial resolution of cardiac CT was required to help understand the complex anatomical structure and aided in preprocedural planning. 12 The exit point of the fistula into this mass was associated with the superior vena cava/right atrial junction. This location is unusual and was beneficial for the unique transcatheter closure approach we took.…”

“…There are few case reports detailing aneurysm formation of cardiac or extracardiac structures from coronary cameral fistulas, but none to our knowledge of a fully calcified right atrial structure leading to right heart dysfunction 10,11 . While the use of echocardiography led to functional understanding of the mass, the high spatial resolution of cardiac CT was required to help understand the complex anatomical structure and aided in preprocedural planning 12 . CT review and consideration of the known literature has led us to postulate that this spherical mass represents a temporally remote tissue plane dissection resulting in a partial thickness of the right aspect of the atrial septum forming a pseudo‐aneurysm, whose nature has led to dystrophic calcium deposition and multiple perforations allowing filling of the right atrium.…”

Bildgebende Belastungsdiagnostik des Herzens

“…Eine Hochrisiko-Ischämie wird vermutet, wenn in ≥ 3 von 16 Segmenten eine Funktionsstörung festgestellt wird [1]. Niedrigdosiertes Dobutamin kann verwendet werden, um die regionale Vitalität und die kontraktile Reserve zu beurteilen, insbesondere vor Revaskularisierung eines LV-Bereichs mit gestörter Kontraktion oder nicht transmuralen Narben in der Narbenbildgebung [14,15]. Die Dobutamin-Stress-MRT wird seltener eingesetzt, da die Überwachung des Patienten innerhalb des Scanners schwieriger ist, die Empfindlichkeit im Vergleich zur Perfusionsstress-MRT geringer ist und die Dobutaminbelastung grundsätzlich auch mit einer höheren Nebenwirkungsrate verbunden ist (z.…”

Recent technologies in cardiac imaging

“…Cardiac CT is frequently the first preferred imaging modality for non-invasive visualization of coronary artery stenosis ( 82 ). It primarily provides information in (a) anatomical outline, (b) functional heart assessment, (c) myocardial perfusion evaluation, (d) contrast enhancement, and (e) valvular assessment ( 83 ). See Table 5 for extensive list.…”