PMID- 24045217 OWN - NLM STAT- MEDLINE DCOM- 20140624 LR - 20161125 IS - 1883-0498 (Electronic) IS - 0023-2513 (Linking) VI - 59 IP - 3 DP - 2013 Jun 17 TI - Myocardial impairment detected by late gadolinium enhancement in hypertrophic cardiomyopathy: comparison with 99mTc-MIBI/tetrofosmin and 123I-BMIPP SPECT. PG - E81-92 AB - PURPOSE: Myocardial fibrosis is considered to be an important factor in myocardial dysfunction and sudden cardiac death in hypertrophic cardiomyopathy (HCM). The purpose of this study was to compare myocardial fibrosis detected by late gadolinium enhancement (LGE) on cardiac MRI with myocardial perfusion and fatty acid metabolism assessed by single photon emission computed tomography in HCM. MATERIALS AND METHODS: We retrospectively evaluated 20 consecutive HCM patients (female, 7; mean age, 53.4 years) who underwent LGE, technetium-99m methoxyisobutylisonitrile/tetrofosmin (99mTc-MIBI/tetrofosmin), and iodine-123 beta-methyl-iodophenylpentadecanoic acid (123I-BMIPP) imaging. We calculated the myocardium-to-lumen signal ratio (M/L) for LGE in 17 segments based on the American Heart Association statement. Scoring of 99mTc-MIBI/tetrofosmin (PI) and 123I-BMIPP (BM) was performed for each segment using a 5-point scale (0, normal; 4, highly decreased). RESULTS: Nineteen of 20 patients (95%) and 153 of 340 segments (45%) showed LGE. M/Ls were 0.42+/-0.16, 0.55+/-0.17, and 0.65+/-0.24 in PI0/BM0, PI0/BM1-4 and PI1-4/BM1-4, respectively. All M/Ls were significantly higher than that of a normal control (0.34+/-0.14) (p<0.001). CONCLUSIONS: Myocardial fibrosis in HCM can occur despite normal perfusion and fatty acid metabolism, and is more strongly associated with disorders of fatty acid metabolism than with perfusion abnormalities. M/L may be a useful indicator of disease severity. FAU - Hashimura, Hiromi AU - Hashimura H AD - Department of Radiology, National Cerebral and Cardiovascular Center 5-7-1 Fujishiro-dai, Suita, 565-8565 Osaka, Japan. FAU - Kiso, Keisuke AU - Kiso K FAU - Yamada, Naoaki AU - Yamada N FAU - Kono, Atsushi AU - Kono A FAU - Morita, Yoshiaki AU - Morita Y FAU - Fukushima, Kazuto AU - Fukushima K FAU - Higashi, Masahiro AU - Higashi M FAU - Noguchi, Teruo AU - Noguchi T FAU - Ishibashi-Ueda, Hatsue AU - Ishibashi-Ueda H FAU - Naito, Hiroaki AU - Naito H FAU - Sugimura, Kazuro AU - Sugimura K LA - eng PT - Comparative Study PT - Journal Article DEP - 20130617 PL - Japan TA - Kobe J Med Sci JT - The Kobe journal of medical sciences JID - 0413531 RN - 0 (Fatty Acids) RN - 0 (Iodine Radioisotopes) RN - 0 (Iodobenzenes) RN - 0 (Organophosphorus Compounds) RN - 0 (Organotechnetium Compounds) RN - 0 (Radiopharmaceuticals) RN - 0J7USQ749M (iodofiltic acid) RN - 42FOP1YX93 (technetium tc-99m tetrofosmin) RN - K2I13DR72L (Gadolinium DTPA) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Cardiomyopathy, Hypertrophic/*diagnostic imaging/metabolism/pathology MH - *Fatty Acids/metabolism MH - Female MH - Fibrosis MH - *Gadolinium DTPA MH - Humans MH - *Iodine Radioisotopes MH - *Iodobenzenes MH - Male MH - Middle Aged MH - Myocardium/pathology MH - *Organophosphorus Compounds MH - *Organotechnetium Compounds MH - *Radiopharmaceuticals MH - Retrospective Studies MH - Tomography, Emission-Computed, Single-Photon/*methods EDAT- 2013/09/21 06:00 MHDA- 2014/06/25 06:00 CRDT- 2013/09/19 06:00 PHST- 2013/09/19 06:00 [entrez] PHST- 2013/09/21 06:00 [pubmed] PHST- 2014/06/25 06:00 [medline] PST - epublish SO - Kobe J Med Sci. 2013 Jun 17;59(3):E81-92.