Erschienen in:
09.08.2019 | Images that Teach
Reversible perfusion defect in hypertrophied papillary muscle on myocardial perfusion imaging: The ‘filled doughnut sign’
verfasst von:
Shelvin Kumar Vadi, MD, Prashant Panda, MD, DM, Ashwani Sood, DNB, Ajay Bahl, MD, DM, Uma Debi, MD, Madan Parmar, MSc, Mohamed Yaser, MBBS, Bhagwant Rai Mittal, MD, DNB
Erschienen in:
Journal of Nuclear Cardiology
|
Ausgabe 3/2020
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Excerpt
Papillary muscles (PM) are important structural components of the heart, giving support to the atrio-ventricular valve (AV valve).
1 Functional incompetence of PM due to ischemia or other anomalies can result in AV valve dysfunctions, and their ischemia exacerbated during stress is reported to cause transient mitral regurgitation.
2 Stress myocardial perfusion imaging (MPI) done with conventional SPECT gamma camera demonstrates the perfusion pattern of left ventricle (LV) walls but fails to reveal the PM status due to its limited spatial resolution. In this article, we present a middle-aged hypertensive man showing reversible perfusion defect in the hypertrophied PM in stress SPECT MPI done using CZT-based gamma camera, confirmed on 2D Echocardiography and cardiac magnetic resonance imaging (MRI). …
