Radiation exposure reduction using an equalization filter during percutaneous coronary intervention: a preliminary study.

Authors

Nao Ichikawa, Atsushi Fukuda, Takuma Hayashi, Yosuke Hattori, Kosuke Matsubara

Published in

Radiation protection dosimetry. Jun 06, 2025. Epub Jun 06, 2025.

Abstract

This study aimed to evaluate radiation exposure reduction in patients and physicians with an equalization filter (EF) in percutaneous coronary intervention. An anthropomorphic phantom was placed on the examination table in the interventional fluoroscopy system. An ionization chamber was attached to the X-ray tube to measure the X-ray output. A solid-state survey meter was placed at the physician's position. EF positions were defined as 'Shallow', 'Deep', 'Both', 'Right', and 'Left'. The X-ray output and H*(10) with and without EFs were measured at 80-160 cm increments of 20 cm with 10 C-arm angulations. The air kerma was almost identical with and without EFs. The EF reduced kerma-area product and H*(10) by a maximum of 27.4%. The average H*(10) reduction of 'Deep' was larger than that of 'Shallow' in order of 'Both' > 'Left' > 'Right'. EFs contribute to reducing patient and physician exposure while maintaining X-ray output.

PMID:
40479558
Bibliographic data and abstract were imported from PubMed on 07 Jun 2025.

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