PMID- 31140154 OWN - NLM STAT- MEDLINE DCOM- 20191223 LR - 20191223 IS - 1864-6433 (Electronic) IS - 0914-7187 (Linking) VI - 33 IP - 8 DP - 2019 Aug TI - Amyloid PET imaging in cardiac amyloidosis: a pilot study using (18)F-flutemetamol positron emission tomography. PG - 624-628 LID - 10.1007/s12149-019-01372-7 [doi] AB - OBJECTIVE: Cardiac amyloidosis is a rare disease characterized by amyloid heart deposits and is usually a part of systemic amyloidosis, in relation to systemic light chain (AL) and transthyretin (ATTR wild-type or genetic) amyloidosis. Several recent studies suggest a promising role of amyloid PET imaging to image cardiac amyloidosis, and several PET tracers are now available for in vivo detection of amyloid deposits. The aim of this study was to evaluate (18)F-flutemetamol in diagnosing cardiac amyloidosis. METHODS: We performed a pilot study using (18)F-flutemetamol (Vizamyl) in 12 patients, 3 control subjects without cardiac amyloidosis, and 9 subjects with documented cardiac amyloidosis. Mean standardized uptake value (SUV) in the left ventricular myocardium and blood pool was determined and semi-quantitative parameter as target to background ratio (TBR, myocardial/blood pool mean SUV ratio) between 10th and 30th minutes was calculated. RESULTS: Uptake of (18)F-flutemetamol in the left ventricular myocardium was noted in all patients with cardiac amyloidosis except one and none in control patient. The TBR was significantly higher in amyloidosis patients than in control subjects: 1.46, interquartile range (IQR) 1.32-2.06 versus 1.06, IQR 0.72-1.1 (p = 0.033). Only one patient in our study had light chain amyloidosis and showed higher TBR than patients with transthyretin amyloid: TBR 3.0 versus TBR median 1.44, IQR 1.33-1.69. CONCLUSION: Amyloid PET tracers such as (18)F-flutemetamol could be a promising tool in diagnosing and in therapy response assessment for patients with cardiac amyloidosis. FAU - Dietemann, Sebastien AU - Dietemann S AUID- ORCID: 0000-0001-5254-4120 AD - Department of Nuclear Medicine, Geneva University and University Hospitals of Geneva, Rue Gabrielle Perret Gentil, 4, 1211, Geneva, Switzerland. dietemann.sebastien@gmail.com. AD - , 1235 route de Lathoy, 74160, St Julien en Genevois, France. dietemann.sebastien@gmail.com. FAU - Nkoulou, Rene AU - Nkoulou R AD - Department of Nuclear Medicine, Geneva University and University Hospitals of Geneva, Rue Gabrielle Perret Gentil, 4, 1211, Geneva, Switzerland. AD - Division of Cardiology, University Hospitals of Geneva, Rue Gabrielle Perret Gentil, 4, 1211, Geneva, Switzerland. LA - eng PT - Journal Article DEP - 20190528 PL - Japan TA - Ann Nucl Med JT - Annals of nuclear medicine JID - 8913398 RN - 0 (Amyloid) RN - 0 (Aniline Compounds) RN - 0 (Benzothiazoles) RN - 0F3M7032P5 (flutemetamol) SB - IM MH - Amyloid/*metabolism MH - Amyloidosis/*diagnostic imaging/*metabolism MH - *Aniline Compounds MH - *Benzothiazoles MH - Heart Diseases/*diagnostic imaging/*metabolism MH - Humans MH - Pilot Projects MH - *Positron-Emission Tomography MH - Retrospective Studies OTO - NOTNLM OT - 18F-flutemetamol OT - Cardiac amyloidosis OT - PET EDAT- 2019/05/30 06:00 MHDA- 2019/12/24 06:00 CRDT- 2019/05/30 06:00 PHST- 2019/05/16 00:00 [received] PHST- 2019/05/21 00:00 [accepted] PHST- 2019/05/30 06:00 [pubmed] PHST- 2019/12/24 06:00 [medline] PHST- 2019/05/30 06:00 [entrez] AID - 10.1007/s12149-019-01372-7 [pii] AID - 10.1007/s12149-019-01372-7 [doi] PST - ppublish SO - Ann Nucl Med. 2019 Aug;33(8):624-628. doi: 10.1007/s12149-019-01372-7. Epub 2019 May 28.