Kentaro Ishii

Ultrastructural Analysis of Infected Absorbable Bone Fixation Material Using Scanning Electron Microscopy After Zygomatic Bone Fracture Surgery

Mizuna Aisawa, Yoshitaka Kubota, Kazuhiko Azuma, Syota Ohki et autres

infection 2.5 months after zygomatic bone fracture surgery and the ultrastructure of an infected absorbable plate observed under a scanning electron microscope (SEM). The patient sustained a right zygomatic bone fracture due to a fall and underwent open reduction and internal fixation …

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Validating knowledge-based volumetric modulated arc therapy plans with a multi-institution model (broad model) using a complete open-loop dataset for prostate cancer

Takaaki Ito, Kazuki Kubo, Ryuta Nakahara, Jun-ichi Fukunaga et autres

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Risk-adapted stereotactic body radiation therapy delivered in four fractions in patients with non-small cell lung cancer.

Yutaka Masuoka, Takuhito Tada, Shogo Matsuda, Yoshikazu Hasegawa et autres

Risk-adapted stereotactic body radiation therapy is preferred over conventional radiotherapy at the authors' institution based on the hypothesis that even with a lower than recommended dose, stereotactic body radiation therapy would yield better local control than conventional radiotherapy. This retrospective study was …

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Study on a Deterrent against Deer Collisions in Railway Operation Environment

Liyue Lai, Keisuke Shimono, Kentaro Ishii, Hiroshi Yokomizo et autres

This paper introduces a study on the efficacy of a bird deterrent, the "Marine Saponin", to deer in a real railway operation environment.This deterrent has been developed for years but has not yet been tested in the transportation aspect.A field experiment was …

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Exploring feasibility criteria for stereotactic radiosurgical treatment of multiple brain metastases using five linac machines

Yusuke Sakai, Kazuki Kubo, Hajime Monzen, Yoshihiro Ueda et autres

Abstract Purpose This study aimed to find descriptors that correlates with normal brain dose to determine the feasibility of performing fractionated stereotactic radiosurgery (SRS) for multiple brain metastases (BMs) using five linac machines. Methods Thirty‐two patients with 1–30 BMs were enrolled. Treatment …

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Case report: Characteristics and nature of primary cardiac synovial sarcoma

Tomonori Kawasaki, Tomomi Nakajima, Tomoaki Torigoe, Kojiro Onohara et autres

Primary malignant cardiac tumors rarely occur, and cardiac synovial sarcoma (SS) is especially rare among such tumors. Herein, we present the case of a 35-year-old female with primary cardiac SS treated with surgery, chemotherapy, and radiotherapy. She presented with chest symptoms and …

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Long-term outcomes of whole-pelvis radiation therapy using volumetric modulated arc therapy for high-risk prostate cancer

Reiko Takemura, Kentaro Ishii, Yukinari Hosokawa, Hideyuki Morimoto et autres

This study investigated the outcomes of whole-pelvis radiation therapy (WPRT) using volumetric modulated arc therapy (VMAT) for high-risk prostate cancer. We retrospectively analysed 112 patients with high-risk prostate cancer who started WPRT at our hospital between August 2011 and August 2015. The …

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Comparison of Late Toxicity After Whole-pelvis Versus Prostate-only VMAT for Prostate Cancer

Ryo Ogino, Kentaro Ishii, Toshifumi Nakajima, Yukinari Hosokawa et autres

BACKGROUND/AIM: To evaluate whether whole-pelvis (WP) volumetric modulated arc therapy (VMAT) is associated with increased late toxicity compared with prostate-only (PO) VMAT in patients with localized prostate cancer. PATIENTS AND METHODS: Participants comprised 384 consecutive patients treated with definitive VMAT to 78 …

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Lack of dose dependency for radiation pneumonitis after chemoradiotherapy with the use of tomotherapy for lung cancer.

Yutaka Masuoka, Takuhito Tada, Masahiro Tokunaga, Noriko Takeshita et autres

edition) non-small cell lung cancer underwent intensity-modulated radiation therapy with a dose of 66 Gy administered in 33 fractions concomitant with carboplatin and paclitaxel therapy. On computed tomography after completion of radiation therapy, ground-glass opacity, which was larger on the contralateral side, …

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Error Detectability of Isodose Volumes as ROIs in Prostate Intensity-modulated RT QA

Ryuta Nakahara, Masayuki Fujiwara, HARUYUKI TAKAKI, Masao TANOOKA et autres

BACKGROUND/AIM: To evaluate the quality of error detectability with a three-dimensional verification system using isodose volumes as regions of interest (ROIs) in quality assurance (QA) of intensity-modulated radiation therapy. PATIENTS AND METHODS: Treatment plans with four types of intentional errors were created …

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Small intestinal bacterial overgrowth as a cause of protracted wound healing and vitamin D deficiency in a spinal cord injured patient with a sacral pressure sore: a case report

Yoshitaka Kubota, Hidekazu Nagano, Kentaro Ishii, Takashi Kono et autres

Abstract Background Pressure sores are sometimes refractory to treatment, often due to malnutrition. Small intestinal bacterial overgrowth (SIBO) obstructs absorption in the digestive tract and causes malnutrition. However, little is known about the association between pressure sore wound healing and SIBO. Here, …

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A Study on Fuzzing for Device Drivers with AddressSanitizer

Kentaro Ishii, Ryoichi Isawa, Masakatu Morii