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Affiliation |
Faculty of Medicine School of Medicine Department of Social Medicine, Legal Medicine |
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Assistant Professor |
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External Link |
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SHINKAWA Norihiro
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Research Areas 【 display / non-display 】
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Life Science / Radiological sciences
Papers 【 display / non-display 】
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A Suggested Mechanism for Green Discoloration of the Postmortem Brain. Reviewed
Shinkawa N, Takahashi N, Yano K, Sawaguchi A, Sonoda A, Kakizaki E, Yukawa N
The American journal of forensic medicine and pathology 2023.3
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Shinkawa N., Kakizaki E., Sonoda A., Yukawa N.
Radiology Case Reports 18 ( 3 ) 1190 - 1196 2023.3
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Radiology Case Reports
We describe herein an autopsy case involving fatal hemorrhagic shock due to idiopathic sigmoid colonic intramural hematoma rupturing into the abdominal cavity. Antemortem computed tomography revealed a mass lesion in the sigmoid colon and a large amount of hemoperitoneum. On forensic autopsy, intramural hematoma of the sigmoid colon with ruptured serosa was identified, while the mucosa remained intact. Microscopically, hematomas were apparent, mainly in the muscularis propria. We diagnosed the cause of death as hemorrhagic shock due to idiopathic intramural hematoma of the sigmoid colon rupturing into the abdominal cavity. Although the patient had been receiving peritoneal dialysis, no relationship was identified between dialysis catheters and sigmoid colon intramural hematoma rupture. On computed tomography, the mass lesion was initially considered a submucosal neoplastic lesion or endometriotic lesion. Intramural hematoma should be considered as a differential diagnosis.
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Sonoda A., Kakizaki E., Shinkawa N., Matsuda H., Yukawa N.
Forensic Science International 341 111510 2022.12
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Forensic Science International
The number of diatoms detected in the kidneys and liver varies considerably when comparing various reports, but the reason remains unclear. We previously showed that the reuse of Kjeldahl flasks is susceptible to generating false positives; false-positive results were observed in 17 of 60 tested flasks, and a maximum of 290 diatoms were detected. Furthermore, these data suggested that the number of diatoms in kidney and liver tissue may be much lower than previously thought. Therefore, only new Kjeldahl flasks were used to perform diatom tests on 80 autopsy cases (drowning and non-drowning victims) in this study. When combined with the 20 cases in a previous study, a total of 100 cases were analyzed. Four grams of lung, 10–30 g each of kidney and liver, 10 mL of blood, and 50–100 mL of water (discovery site) were examined. A large number of diatoms (n = 400) were found in organs other than the lungs in only 1 of 56 cases of suspected drowning (excluding cases of suspected drowning in baths). Together with the previous 20 cases, this single case represented only 1 of 76 cases (1.3 %). In closed organs and blood samples, 3 diatoms were found in 2 of 56 victims (3.6 %), and 1 or 2 diatoms were found in 8 victims (14 %). However, 5 diatoms were found in 1 of 10 bathtub drowning victims and 12 non-drowning victims (4.5 %), and 1 or 2 diatoms were found in 6 victims (27 %). Moreover, 1 or 2 diatoms were found in negative control flasks in 3 of 80 victims (3.8 %). The results showed that distinguishing false-positive results is difficult when a small number of diatoms are found in the kidneys and liver. Thus, the presence of diatoms in closed organs and blood seems to be unreliable as evidence of death by drowning, at least in the water environments in our region (freshwater areas: 23–26,000 diatoms/mL, median 200 diatoms; brackish water areas: 26–1200 diatoms/mL, median 210 diatoms; seawater area: 2–1000 diatoms/mL, median 24 diatoms). These results also reconfirmed that the reuse of flasks is the most important cause of false positives. Conversely, the presence of a large number of diatoms in lung samples (1–850,000 diatoms/g lung tissue; median (right lung): 440 diatoms, (left lung): 320 diatoms) is very informative and is an effective diagnostic aid in many cases.
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Shinkawa N., Kakizaki E., Sonoda A., Yukawa N.
Journal of Forensic and Legal Medicine 92 102452 2022.11
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Journal of Forensic and Legal Medicine
An autopsy case involving a child showing various shapes of tramline bruises caused by a single weapon is described. On autopsy, multiple tramline bruises in different orientations were found, mainly on the back. Shapes of the tramline bruises were variable, including linear, arcuate, nodular, hook-like, and hook-like with a knot at the end. Due to the presence of severe subcutaneous hemorrhages and the absence of other potentially fatal injuries or diseases, we determined the cause of death to be traumatic shock. Microscopically, of the many tramline bruises, characteristic hemorrhages were observed on the right abdominal and left lumbar regions. Those hemorrhages were observed in the dermis, corresponding to macroscopic tramline bruises. Hemorrhage was also observed in the subcutis, corresponding to the pallor of the outer surface. The mechanisms by which tramline bruises occurred in the dermis and subcutis in this case are discussed with reference to the literature. We also propose subcutaneous and intradermal hemorrhagic types of tramline bruising.
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A Case of Fatal Exsanguination by a Japanese Short Sword. Reviewed
Sonoda A, Shinkawa N, Kakizaki E, Yukawa N
The American journal of forensic medicine and pathology 2022.5
Language：English Publishing type：Research paper (scientific journal)
Books 【 display / non-display 】
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Aiの概念?定義・関連法・職域・団体?職務として携わる人々からみたAiとは（役割と問題点）放射線科医
新川 慶明、髙橋 直也（ Role： Edit）
株式会社ベクトル・コア 2015.7
Language：Japanese Book type：Scholarly book
MISC 【 display / non-display 】
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Yukawa N., Shinkawa N., Yano K., Tachibana M., Kakizaki E., Sonoda A.
Legal Medicine 60 102176 2023.2
Language：Japanese Publishing type：Rapid communication, short report, research note, etc. (scientific journal) Publisher：Legal Medicine
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Azuma M., Nakada H., Takei M., Nakamura K., Katsuragawa S., Shinkawa N., Terada T., Masuda R., Hattori Y., Ide T., Kimura A., Shimomura M., Kawano M., Matsumura K., Meiri T., Ochiai H., Hirai T.
Emergency Radiology 29 ( 2 ) 425 2022.4
Language：Japanese Publishing type：Rapid communication, short report, research note, etc. (scientific journal) Publisher：Emergency Radiology
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縦隔気腫 Reviewed
新川慶明，柳田美津郎
オートプシー・イメージング症例集２ 2018.4
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
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Aiにおける特徴対応異種画像統合法を用いた診断技術研究 Reviewed
西井龍一，新川慶明，Thi Thi Zin
INNERVISION 33 ( 12 ) 18 - 20 2018
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
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CASE OF THE MONTH,CASE OF March Invited
新川慶明、新川仁奈子、平井俊範
画像診断 37 ( 3 ) 351 - 351 2017.2
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：秀潤社
Presentations 【 display / non-display 】
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Differentiation of drowning in seawater and freshwater with pleural effusion: A phantom study using dual-layer spectral CT International conference
Norihiro Shinkawa, Toshinori Hirai, Nobuhiro Yukawa, Ai Sonoda, Eiji Kakizaki
RSNA2019
Event date： 2019.12.1 - 2019.12.6
Language：English Presentation type：Oral presentation (general)
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血液水溶液への可視光照射によるルミノール反応の加速効果
林 里采，白上 努，柿崎英二，新川慶明，園田 愛，湯川修弘
第69回日本法医学会学術九州地方集会
Event date： 2019.10.25 - 2019.10.26
Language：Japanese Presentation type：Oral presentation (general)
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切断された遺体に骨化性筋炎を認め、生前の暴行が疑われた一例
新川慶明，柿崎英二，林 里采，園田 愛，湯川修弘
第69回日本法医学会学術九州地方集会
Event date： 2019.10.25 - 2019.10.26
Language：Japanese Presentation type：Oral presentation (general)
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切断された遺体に骨化性筋炎を認め、生前の暴行が疑われた一例
新川慶明，柿崎英二，園田 愛，林 里采，湯川修弘
第69回日本法医学会学術九州地方集会
Event date： 2019.10.25
Language：Japanese Presentation type：Oral presentation (general)
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慢性硬膜下出血内に認められたヘマトイジン含有マクロファージと思われる黄色色素含有細胞
新川 慶明，園田 愛，松山 美紀，柿崎 英二，林 里采， 和田 啓，湯川 修弘
第103次日本法医学会学術全国集会 (仙台サンプラザ) 日本法医学会
Event date： 2019.6.12 - 2019.6.15
Language：Japanese Presentation type：Poster presentation
Venue：仙台サンプラザ
Grant-in-Aid for Scientific Research 【 display / non-display 】
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焼損死体における諸臓器のCT値の解析
Grant number：23K14843 2023.04 - 2026.03
独立行政法人日本学術振興会 科学研究費基金 若手研究
Authorship：Principal investigator
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溺死診断におけるプランクトン検査の意義：既成概念の大幅な変革に挑戦する
Grant number：22K19675 2022.04 - 2025.03
独立行政法人日本学術振興会 科学研究費補助金 挑戦的研究（萌芽）
園田 愛、
Authorship：Coinvestigator(s)
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最も少ない労力で行える溺死の補助診断検査：法医実務に合わせた最も効果的な活用法
Grant number：21H03215 2021.04 - 2024.03
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(B)
湯川 修弘、
Authorship：Coinvestigator(s)
Available Technology 【 display / non-display 】
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死後CTから個人識別に有用な特徴的所見を抽出する研究
身元の分かっている胸部X線との比較による身元不明死後CTの個人識別
人工知能を用いた特徴対応異種画像統合法の開発Home Page： 社会医学講座法医学分野
Related fields where technical consultation is available：画像診断、個人識別
Message：共同研究の希望テーマ：画像による個人識別