理工学部 教員紹介

Osamu KOMORI

  (小森 理)

Profile Information

Affiliation
Professor, Faculty of Science and Technology Department of Science and Technology , Seikei University
The Institute of Statistical Mathematics
Degree
博士(統計科学)

J-GLOBAL ID
201301069266445882
researchmap Member ID
B000232905

External link

Research History

 3

Awards

 1

Papers

 39
  • Masamune Kidoguchi, Ayumi Akazawa, Osamu Komori, Makoto Isozaki, Yoshifumi Higashino, Satoshi Kawajiri, Shinsuke Yamada, Toshiaki Kodera, Hidetaka Arishima, Tetsuya Tsujikawa, Hirohiko Kimura, Kenichiro Kikuta
    Clinical Neuroradiology, Jun 6, 2023  
    Abstract Purpose The overall goal of our study is to create modified Alberta Stroke Program Early Computed Tomography Score (ASPECTS) determined by the findings on arterial spin labeling imaging (ASL) to predict the prognosis of patients with acute ischemic stroke after successful mechanical thrombectomy (MT). Prior to that, we examined predictive factors including the value of cerebral blood flow (CBF) measured by ASL for occurrence of cerebral infarction at the region of interest (ROI) used in the ASPECTS after successful MT. Methods Of the 92 consecutive patients with acute ischemic stroke treated with MT at our institution between April 2013 and April 2021, a total of 26 patients who arrived within 8 h after stroke onset and underwent MT resulting in a thrombolysis in cerebral infarction score of 2B or 3 were analyzed. Magnetic resonance imaging, including diffusion-weighted imaging (DWI) and ASL, was performed on arrival and the day after MT. The asymmetry index (AI) of CBF by ASL (ASL-CBF) before MT was calculated for 11 regions of interest using the DWI-Alberta Stroke Program Early CT Score. Results Occurrence of infarction after successful MT for ischemic stroke in the anterior circulation can be expected when the formula 0.3211 × history of atrial fibrillation +0.0096 × the AI of ASL-CBF before MT (%) +0.0012 × the time from onset to reperfusion (min) yields a value below 1.0 or when the AI of ASL-CBF before MT is below 61.5%. Conclusion The AI of ASL-CBF before MT or a combination of a history of atrial fibrillation, the AI of ASL-CBF before MT, and the time from onset to reperfusion can be used to predict the occurrence of infarction in patients arriving within 8 h after stroke onset in which reperfusion with MT was successful.
  • Osamu Komori, Yusuke Saigusa, Shinto Eguchi
    Japanese Journal of Statistics and Data Science, 6(2) 803-826, May 18, 2023  
  • Bulent Tutmez, Osamu Komori
    Pollution, 9(3) 1082-1097, May, 2023  Peer-reviewed
  • Satoshi Kawajiri, Makoto Isozaki, Osamu Komori, Shinsuke Yamada, Yorhifumi Higashino, Takahiro Yamauchi, Ayumi Akazawa, Masamune Kidoguchi, Munetaka Yomo, Toshiaki Kodera, Hidetaka Arishma, Kousuke Awara, Masaru Inatani, Kenichiro Kikuta
    Neurosurgery, 92(6) 1276-1286, Feb 10, 2023  
    BACKGROUND: The role of visual evoked potential (VEP) in direct clipping of the paraclinoid internal carotid artery (ICA) aneurysm remains uncertain. OBJECTIVE: To examine whether intraoperative neuromonitoring with VEP can predict deterioration of visual function after direct clipping of the paraclinoid ICA aneurysm with anterior clinoidectomy. METHODS: Among consecutive 274 patients with unruptured cerebral aneurysm, we enrolled 25 patients with paraclinoid ICA aneurysm treated by direct clipping after anterior clinoidectomy with intraoperative neuromonitoring with VEP in this study. We evaluated the visual acuity loss (VAL) and visual field loss (VFL) before surgery, 1 month after surgery, and at the final follow-up. RESULTS: The VAL at 1 month after surgery (VAL1M) and VAL at the final follow-up (Final VAL) were significantly related to the reduction rate of VEP amplitude at the end of surgery (RedEnd%), more than 76.5%, and the maximal reduction rate of VEP amplitude during surgery (MaxRed%), more than 66.7% to 70%. The VFL at 1 month after surgery (VFL1M) and the VFL at the final follow-up (Final VFL) were significantly related to MaxRed% more than 60.7%. CONCLUSION: VAL1M, Final VAL, VFL1M, and Final VFL could be significantly predicted by the value of RedEnd% and MaxRed% in direct clipping of Al-Rodhan group Ia, Ib, and II paraclinoid ICA aneurysms with anterior clinoidectomy.
  • Takayuki Onishi, Osamu Komori, Tomo Ando, Motoki Fukutomi, Tetsuya Tobaru
    Archives of Cardiovascular Diseases, 116(2) 79-87, Feb, 2023  

Misc.

 3

Research Projects

 11

Industrial Property Rights

 1