Star-trail artifacts of the advanced-putrefied brain on postmortem CT

•Postmortem CT (PMCT) of advanced-putrefied brain with cavitation was performed.•PMCT showed numerous star-trail artifacts similar to ring artifacts.•Star-trail artifacts do not occur due to mechanical problems. We report star-trail artifacts of advanced-putrefied brain on postmortem CT (PMCT) of a...

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Bibliographic Details
Published in:Forensic imaging (Online) 2021-03, Vol.24, p.200432, Article 200432
Main Authors: Kobayashi, Tomoya, Yamamori, Moyu, Shiotani, Seiji, Numano, Tomokazu, Ishimori, Yoshiyuki, Abe, Shinji, Hayakawa, Hideyuki
Format: Article
Language:English
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Summary:•Postmortem CT (PMCT) of advanced-putrefied brain with cavitation was performed.•PMCT showed numerous star-trail artifacts similar to ring artifacts.•Star-trail artifacts do not occur due to mechanical problems. We report star-trail artifacts of advanced-putrefied brain on postmortem CT (PMCT) of a 77-year-old male approximately one month after death. After CT calibration, routine PMCT (tube current time product: 400 mAs) showed star-trail artifacts, which arose due to cerebral cavitation, but were hardly visible on low-dose PMCT (100 mAs) due to noise. Low-dose PMCT with 4-time-image summation also showed star-trail artifacts. Those are not due to mechanical X-ray detector problems.
ISSN:2666-2256
2666-2256
DOI:10.1016/j.fri.2021.200432