[Reduction method of patients' radiation dose considering the size of field of view with a digital cine X-ray system loading a flat-panel detector].

Mamoru Kato, Koichi Chida, Kyouhei Yoshida, Fumiaki Sasaki, Masafumi Sasaki, Hajime Oosaka, Tetsuo Tosa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Angiographic equipment has tended toward using flat-panel detector (FPD). However, the radiation dose varies depending on the size of field of view (FOV) in the FPD. Although we were using 7 inch FOV in cardiac procedures, we examined a way to reduce the patients' radiation dose by using 8 inch FOV utilizing a digital zoom processing. We measured the absorbed dose rates at an interventional reference point (IRP) with 20 cm acrylic board to compare 8 inch FOV using a digital zoom processing with 7 inch FOV. Additionally we visually evaluated these phantom images. Result of comparison of absorbed dose rates at IRP, 8 inch FOV using a digital zoom processing was reduced more than 7 inch FOV (fluoroscopic 29.0% and digital cine 37.5%). These phantom images were of equivalent quality. The method to use 8 inch FOV utilizing a digital zoom processing technique in cardiac procedures is one of the effective radiation exposure reduction methods.

Original languageEnglish
Pages (from-to)1443-1447
Number of pages5
JournalNihon Hoshasen Gijutsu Gakkai zasshi
Volume67
Issue number11
DOIs
Publication statusPublished - 2011

ASJC Scopus subject areas

  • Medicine(all)

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