Open AccessUsefulness of 123I-BMIPP and 201TlCl nuclide scintigraphy in evaluation of myocarditis in patients with polymyositis or dermatomyositis
Author(s) -
Yukinori Okada,
Yukiko Takakuwa,
Seido Ooka,
Yoshiaki Ogawa,
Kumito Kawahata,
Yasuyuki Kobayashi,
Keiichiro Yamaguchi,
Yoshihiro J. Akashi
Publication year - 2021
Publication title -
medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.59
H-Index - 148
eISSN - 1536-5964
pISSN - 0025-7974
DOI - 10.1097/md.0000000000027173
Subject(s) - medicine , ejection fraction , cardiology , myocarditis , polymyositis , scintigraphy , dermatomyositis , nuclear medicine , heart failure
To investigate the usefulness of 123 I-BMIPP/ 201 TlCl scintigraphy for evaluating the presence of myocarditis in patients with polymyositis (PM) or dermatomyositis (DM). We performed a retrospective study of 26 patients diagnosed with new-onset active PM/DM who underwent 123 I-BMIPP/ 201 TlCl scintigraphy between 01 April 2010 and 20 March 2015. We determined the 123 I-BMIPP/ 201 TlCl ratio and grouped the patients according to presence or absence of a mismatch. We evaluated the relationship between mismatch and the laboratory and echocardiographic findings. Mismatch was found in 13 (50%) patients. There was no statistically significant difference in age, cardiac troponin T, myoglobin, myosin light chain, aldolase levels, E wave/A wave ratio, right ventricular systolic pressure between the mismatch and non-mismatch groups. Left ventricular end-diastolic and end-systolic dimensions were significantly greater in the mismatch group (45.0 vs 42.5 mm, P = < .01 and 29.5 mm vs 25.0 mm, P < .01). Left ventricular ejection fraction was significantly lower in the mismatch group (63.5% vs 71.5%, P = .04). Significant inverse correlation (r = −0.44, P = .03) was observed between left ventricular ejection fraction and mismatch ratio. The use of 123 I-BMIPP/ 201 TlCl scintigraphy may be considered for evaluating myocarditis in patients with PM/DM.