Reproducibility and Repeatability of Assessment of Myocardial Light Chain Amyloidosis Burden Using 18 F-Florbetapir PET/CT

ConclusionsThe present study showed excellent interobserver reproducibility and intraobserver repeatability of18F-florbetapir PET retention index in patients with cardiac AL amyloidosis.
Source: Journal of Nuclear Cardiology - Category: Nuclear Medicine Source Type: research

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We present not ‐yet‐seen multimodal images of a 55‐year‐old female patient with isolated atrial amyloidosis (IAA) who clinically suffered from multiple atrial arrhythmias and heart failure symptoms with preserved left ventricular ejection fraction. We aim to show structural and functional abnormalities det ected by electrophysiological voltage mapping, cardiac magnetic resonance imaging (MRI) [cMRI; atrial strain measurements, late gadolinium enhancement (LGE) visualization], and99mTc ‐DPD scintigraphy. Bipolar voltage mapping performed during two electrophysiological procedures showed diffuse left atrial low‐v...
Source: ESC Heart Failure - Category: Cardiology Authors: Tags: Case Report Source Type: research
CONCLUSION: Molecular imaging represent a sensitive tool for early assessment of both amyloid burden and cardiac innervation, to differentiate between subtypes and to monitor disease burden, disease progression, and potential response to therapy. PMID: 32525789 [PubMed - as supplied by publisher]
Source: Current Radiopharmaceuticals - Category: Radiology Tags: Curr Radiopharm Source Type: research
659Objectives: Understanding the characteristics of patients with a final diagnosis of transthyretin amyloid cardiomyopathy (ATTR-CA) may help optimally triage patients for Tc-99m pyrophosphate (PYP) scanning. The study was aimed to investigate the prevalence as well as the clinical features along with the electrocardiographic and echocardiographic characteristics of patients with ATTR-CA, who were referred for PYP scan after being hospitalized for decompensated heart failure. Methods: We included all the patients who were referred for PYP scan after heart failure-related hospitalization at our center between 06/2015 and 0...
Source: Journal of Nuclear Medicine - Category: Nuclear Medicine Authors: Tags: Diagnostic and Prognostic Advances in Cardiac Radionuclide and Hybrid Imaging Source Type: research
This study evaluated the diagnostic value of the novel cardiovascular magnetic resonance (CMR) parameter “myocardial transit-time” (MyoTT) in distinguishing cardiac amyloidosis from other hypertrophic cardiomyopathies.MethodsN  = 20 patients with biopsy-proven cardiac amyloidosis (CA),N  = 20 patients with known hypertrophic cardiomyopathy (HCM), andN  = 20 control patients without relevant cardiac disease underwent dedicated CMR studies on a 1.5-T MR scanner. The CMR protocol comprised cine and late-gadolinium-enhancement (LGE) imaging as well as first-pass perfusion a...
Source: Clinical Research in Cardiology - Category: Cardiology Source Type: research
Authors: Elwazir MY, Bois JP, Abouezzeddine OF, Chareonthaitawee P Abstract Infiltrative heart disease is an encompassing term referring to different pathological entities that involve infiltration of the myocardium by either abnormal substances or inflammatory cells. These infiltrates can impair cellular function, induce necrosis and fibrosis, or otherwise disrupt myocardial architecture resulting in a wide spectrum of structural and functional impairment. Depending on the specific disorder and stage of disease, patients may present with minimal cardiac abnormalities, or may have findings of advanced restrictive a...
Source: Quarterly Journal of Nuclear Medicine and Molecular Imaging - Category: Nuclear Medicine Tags: Q J Nucl Med Mol Imaging Source Type: research
AbstractNuclear medicine bone scans differentiate ATTR cardiomyopathy (ATTR-CM) from light chain cardiac amyloidosis and other myocardial disorders, helping to make the diagnosis without biopsy. Standard bone scans are not absolutely quantitative, so are assessed by comparing the heart to other tissues. The standard visual scoring system compares heart to bone. This accurately diagnoses ATTR-CM and has been validated in a multicenter study, but has limitations. Semiquantitative techniques including heart/contralateral thorax (H/CL) and heart/whole body ratio (H/WB) improve on visual scoring but still rely on extracardiac s...
Source: Journal of Nuclear Cardiology - Category: Nuclear Medicine Source Type: research
AbstractBackgroundTransthyretin cardiac amyloidosis (ATTR) is a rare, but underdiagnosed, cardiomyopathy. Traditionally diagnosed invasively, ATTR can be diagnosed with non-invasive99mTechnetium pyrophosphate (99mTc-PYP) planar scintigraphy. Non-planar imaging has not been validated for ATTR diagnosis. Here, we develop and validate a Cadmium Zinc Telluride (CZT) protocol for diagnosing ATTR.MethodsForty-three subjects (24 ATTR, 19 non-ATTR) were imaged with Philips Dual-Head Anger (planar) and General Electric CZT cameras. Myocardial uptake was quantified by heart-to-contralateral (H/CL) ratios. CZT scans were quantified b...
Source: Journal of Nuclear Cardiology - Category: Nuclear Medicine Source Type: research
1451Purpose: Cardiac amyloidosis (CA) is a progressive cardiomyopathy for which new therapies are now available. Non-invasive imaging like 99mTc-DPD scintigraphy can aid in the diagnostic workup. While Perugini qualitative-score is a recognized useful tool to identify CA, still a more quantitative and less subjective approach would be desirable. We aimed at validating a semiquantitative parameter able to improve the diagnostic accuracy in patients with suspected CA. The additional value of morphological parameters derived from trans-thoracic echocardiography (TTE) was also tested. Materials and Methods: 59 Patients were re...
Source: Journal of Nuclear Medicine - Category: Nuclear Medicine Authors: Tags: Cardiovascular Clinical Science Posters Source Type: research
Conclusions: 11C-PIB PET/MR may be valuable in the noninvasive diagnosis of CA. Further study with a larger cohort of patients would be needed to confirm it.
Source: Journal of Nuclear Medicine - Category: Nuclear Medicine Authors: Tags: Cardiovascular YIA Symposium Source Type: research
In this study, we report the age-associated differences between fetal MSC (fMSC) populations and MSCs isolated from elderly donors with respect to their transcriptomes. We successfully reprogrammed fMSCs (55 days post conception) and adult MSC (aMSC; 60-74 years) to iPSCs and, subsequently, generated the corresponding iMSCs. In addition, iMSCs were also derived from ESCs. The iMSCs were similar although not identical to primary MSCs. We unraveled a putative rejuvenation and aging gene expression signature. We show that iMSCs irrespective of donor age and cell type re-acquired a similar secretome to that of th...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
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