Beam-Hardening Correction for Virtual Monochromatic Imaging of Myocardial Perfusion via Fast-Switching Dual-kVp 64-Slice Computed Tomography – A Pilot Study Using a Human Heart Specimen –

Minoru Yamada; Masahiro Jinzaki; Sachio Kuribayashi; Nobuaki Imanishi; Kazuya Funato; Sadakazu Aiso

doi:10.1253/circj.CJ-12-0463

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Beam-Hardening Correction for Virtual Monochromatic Imaging of Myocardial Perfusion via Fast-Switching Dual-kVp 64-Slice Computed Tomography

– A Pilot Study Using a Human Heart Specimen –

Minoru Yamada, Masahiro Jinzaki, Sachio Kuribayashi, Nobuaki Imanishi, Kazuya Funato, Sadakazu Aiso

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Keywords: Beam-hardening, Dual-kVp, Myocardial perfusion imaging

JOURNAL FREE ACCESS

2012 Volume 76 Issue 7 Pages 1799-1801

DOI https://doi.org/10.1253/circj.CJ-12-0463

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Abstract

Background: Investigate the effectiveness of beam-hardening (BH) correction using ECG-gated dual-kVp computed tomography (CT) for myocardial imaging. Methods and Results: A human heart specimen and artificial descending aorta were scanned using both dual-kVp and single 120-kVp modes. The myocardial CT values at the anterior and posterobasal walls were 89.4±6.2 and 87.1±6.9HU (P=0.59) for the 69-keV images, and 88.3±5.9 and 49.9±13.5HU (P=0.002) for the 120-kVp images, respectively. Conclusions: Fast-switching dual-kVp technology is feasible for the correction of CT value deficits induced by BH that mimics perfusion defects. (Circ J 2012; 76: 1799–1801)

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