Unraveling septal perfusion abnormalities in Ebstein's anomaly: A case report contrasting PET MPI with myocardial reality.

In Ebstein's anomaly, septal perfusion abnormality poses a challenge in traditional interpretations of myocardial blood flow. We report a single case of a 43-year-old female with known Ebstein's anomaly who was referred for preoperative cardiac evaluation prior to bariatric surgery. Due to her multiple cardiovascular risk factors and vague chest discomfort, positron emission tomography (PET) myocardial perfusion imaging (MPI) and cardiac magnetic resonance imaging (MRI) were performed.

Attacking the Achilles heel of cardiac amyloid nuclear scintigraphy: How to reduce equivocal and false positive studies.

Background: Planar and single-photon emission computed tomography (SPECT) nuclear imaging techniques with bone seeking radiotracers have been increasingly adopted for diagnosis of ATTR cardiac amyloidosis. However, inherent limitations of these techniques due to lack of anatomical landmarks have been recognized, with consequent high numbers of equivocal or false positive cases. SPECT/computed tomography (CT) fusion imaging offers a significant advantage to overcome these limitations by substantially reducing inaccurate interpretations.

From Clinical Clues to Final Diagnosis: The Return of Detective Work to Clinical Medicine in Cardiac Amyloidosis.

Cardiac amyloidosis is frequently misdiagnosed, denying patients the opportunity for timely and appropriate management of the disease. The purpose of this review and case studies is to raise awareness of the diagnostic "red flags" associated with cardiac amyloidosis and the currently available non-invasive strategies for diagnosis. The review focuses on the identification of one of the two main types of cardiac amyloidosis, transthyretin amyloid cardiomyopathy, and non-invasive tools to distinguish this from light-chain amyloidosis.

Discordance between invasive coronary flow reserve (CFR) and non-invasive myocardial flow reserve (MFR) in diffuse coronary ectasia (DCE).

Clinical use with evidence base for diagnostic and prognostic value of quantitative positron emission tomography(PET) myocardial perfusion imaging (MPI) in patients with known or suspected coronary artery disease has exponentially increased over the last decade. This case illustrates the very first time that stress myocardial blood flow(MBF) in absolute terms (ml/min/gram) and myocardial flow reserve(MFR) are augmented in three vessel diffuse coronary ectasia by N13-Ammonia PET MPI. Moreover, relative qualitative MPI demonstrated moderate-sized ischemia in right coronary artery territory with chronic total occlusion in middle segment; despite regional myocardial flow reserve remains above ischemic thresholds while regional stress myocardial blood flow is mildly reduced.

Evaluating the Impact of Patient No-Shows on Service Quality.

Purpose: Patient no-shows are long-standing issues affecting resource utilization and posing risks to the quality of healthcare services. They also lead to loss of anticipated revenue, particularly in services where resources are expensive and in great demand.

Methods: In order to address common reasons why patients miss appointments, this study reviews the current literature and investigates various tools and methods that have been implemented to mitigate such issues.

The value of exercise SPET for the detection of coronary artery steal syndrome secondary to unligated major side branch of left internal mammary artery.

Objective: The clinical significance of unligated major left internal mammary artery (LIMA)-side branches (SB) remains controversial in patients with previous coronary artery bypass graft (CABG) surgery. The aim of this study was to investigate the clinical significance of unligated major LIMA-SB by using exercise myocardial perfusion imaging (MPI) with single-photon emission tomography.

Subjects And Methods: We conducted a retrospective analysis of 2819 consecutive patients who underwent diagnostic angiography.

The practical value of technetium-99m-MIBI SPET to differentiate between ischemic and non-ischemic heart failure presenting with exertional dyspnea.

Objective: We aimed to differentiate ischemic heart failure (HF) from non-ischemic HF in patients presenting with non-acute onset exertional dyspnea using technetium-99m methoxyisobutylisonitrile gated single photon emission tomography ((99m)Tc-MIBI gSPET) imaging.

Subjects And Methods: One hundred and seventy nine consecutive patients with exertional dyspnea without concomitant chest pain referred to (99m)Tc-MIBI gSPET imaging were included in this study. All patients had a newly diagnosed HF with reduced ejection fraction (HFrEF).