PMID- 22486396 OWN - NLM STAT- MEDLINE DCOM- 20121130 LR - 20161125 IS - 1540-8175 (Electronic) IS - 0742-2822 (Linking) VI - 29 IP - 6 DP - 2012 Jul TI - Differentiating cardiac amyloidosis and hypertrophic cardiomyopathy by use of three-dimensional speckle tracking echocardiography. PG - 668-77 LID - 10.1111/j.1540-8175.2012.01680.x [doi] AB - INTRODUCTION: Cardiac amyloidosis (CA) and hypertrophic cardiomyopathy (HCM) are important differential diagnosis of left ventricular hypertrophy. The aim of this study was to investigate if three-dimensional (3D) speckle tracking-derived functional parameters enabled differentiation of CA and HCM by a disease-specific pattern. METHODS: Twelve patients with CA and 12 patients with HCM were included. CA and HCM were diagnosed by contrast-enhanced cardiovascular magnetic resonance (CMR). Three-dimensional speckle tracking echocardiography with wall motion analysis was performed for strain (radial [RS(%)], longitudinal [LS (-%)], and circumferential [CS (-%)]), rotation (ROT [degree]), and twist (TWT [degree]). Intergroup comparison included normalized values from 49 healthy volunteers. RESULTS: Averaged RS, LS, CS, ROT, and TWT were investigated at basal, midventricular, and apical levels. With some exceptions, 3D speckle tracking function parameters were mostly lower in the HCM and minimal in the CA group as compared to controls. Comparing CA and HCM, basal RS was significantly reduced in patients with amyloidosis (7.5 +/- 19.7 vs. 22.3 +/- 22.7; P < 0.0001), furthermore the "physiological" gradient of basoapically decreasing RS, which was reduced, but still preserved in HCM, showed a clear "inverse pattern" in patients with amyloidosis, comprising a gradual increase from base to apex. Correlation analysis of 3D speckle tracking function and CMR late gadolinium enhancement (LGE) revealed high inverse correlation of RS and LGE in CA (r =-0.82) and only mild correlation in HCM, followed by CS as second best parameter. An increasing/decreasing basoapical RS gradient yielded a sensitivity of 83% versus the CMR-derived diagnosis "CA" and "HCM." CONCLUSIONS: Three-dimensional speckle tracking echocardiography demonstrated significant differences in CA and HCM. The basoapical RS gradient displayed oppositional characteristics in CA and HCM, suggesting a "function-pattern-based" differentiation of amyloidosis and HCM. CI - (c) 2012, Wiley Periodicals, Inc. FAU - Baccouche, Hannibal AU - Baccouche H AD - Department of Medicine II, Hospital Kirchheim/Teck, Kreiskliniken Esslingen, Germany. h.baccouche@gmx.de FAU - Maunz, Martin AU - Maunz M FAU - Beck, Torsten AU - Beck T FAU - Gaa, Elisabeth AU - Gaa E FAU - Banzhaf, Michael AU - Banzhaf M FAU - Knayer, Ute AU - Knayer U FAU - Fogarassy, Peter AU - Fogarassy P FAU - Beyer, Martin AU - Beyer M LA - eng PT - Journal Article DEP - 20120404 PL - United States TA - Echocardiography JT - Echocardiography (Mount Kisco, N.Y.) JID - 8511187 SB - IM MH - Aged, 80 and over MH - Amyloidosis/*diagnostic imaging MH - Cardiomyopathy, Hypertrophic/*diagnostic imaging MH - Diagnosis, Differential MH - Echocardiography, Three-Dimensional/*methods MH - Elasticity Imaging Techniques/*methods MH - Female MH - Heart Diseases/*diagnostic imaging MH - Humans MH - Male MH - Middle Aged MH - Reproducibility of Results MH - Sensitivity and Specificity EDAT- 2012/04/11 06:00 MHDA- 2012/12/10 06:00 CRDT- 2012/04/11 06:00 PHST- 2012/04/11 06:00 [entrez] PHST- 2012/04/11 06:00 [pubmed] PHST- 2012/12/10 06:00 [medline] AID - 10.1111/j.1540-8175.2012.01680.x [doi] PST - ppublish SO - Echocardiography. 2012 Jul;29(6):668-77. doi: 10.1111/j.1540-8175.2012.01680.x. Epub 2012 Apr 4.