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Comparison of perfusion-metabolism mismatch in 99mTc-MIBI and 123I-BMIPP scintigraphy with cardiac magnetic resonance in patients with dilated cardiomyopathy.

Abstract：

BACKGROUND:Cardiac magnetic resonance (CMR) imaging is an established method of detecting myocardial fibrosis related to prognosis in patients with dilated cardiomyopathy (DCM). Recent studies have found that (99m)Tc-methoxy-isobutyl-isonitrile (MIBI) and (123)I-15-(p-iodophenyl)-3(R,S)-methylpentadecanoic acid (BMIPP) dual single-photon-emission computerized tomography (MIBI-BMIPP dual SPECT) can detect perfusion-metabolism mismatches. We compared MIBI-BMIPP dual SPECT with CMR findings and assessed their prognostic abilities to determine the significance of abnormal metabolism in patients with DCM. METHODS AND RESULTS:Fifty inpatients with DCM (age 58 ± 12 y; 14 female) were assessed with the use of MIBI-BMIPP dual SPECT and CMR. Perfusion-metabolism mismatches were identified mainly at the left ventricular free wall, whereas late gadolinium enhancement (LGE) was evident mostly at the septal wall. During a median follow-up of 33 months, 9 patients developed cardiac events including death, heart failure, and fatal arrhythmia. Event-free survival rates were significantly lower for patients with LGE plus a mismatch than with other abnormalities (P = .001). Among clinical and imaging variables, LGE plus a mismatch was significantly associated with cardiac events (hazard ratio 7.9, 95% confidence interval 1.8-35.6; P = .007). CONCLUSIONS:Coexisting LGE and a perfusion-metabolism mismatch accurately predict future cardiac events in patients with DCM.

journal_name

J Card Fail

journal_title

Journal of cardiac failure

authors

Yoshida A,Takano H,Asai K,Yasutake M,Amano Y,Kumita S,Shimizu W,Mizuno K

doi

10.1016/j.cardfail.2013.05.009

subject

Has Abstract

pub_date

2013-07-01 00:00:00

pages

445-53

issue

7

eissn

1071-9164

issn

1532-8414

pii

S1071-9164(13)00158-9

journal_volume

19

pub_type

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