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Automatic Segmentation of Phalanges Regions on MR Images Based on MSGVF Snakes
Koji SHIGEYOSHI,Seiichi MURAKAMI,Hyoungseop KIM,Joo Kooi TAN,Seiji ISHIKAWA 제어로봇시스템학회 2015 제어로봇시스템학회 국제학술대회 논문집 Vol.2015 No.10
In recent years, medical imaging is important in medical diagnosis for early detection of lesions. However, a large number of images increases the stress to the radiologist. Therefore, CAD (Computer Aided Diagnosis) system is expected to reduce such burden. In diagnostic imaging of phalanges, X-ray photographs, CT (Computed Tomography) are used to evaluate the value of phalanges destruction. Whereby, the MRI (Magnetic Resonance Imaging) that is used mainly to diagnose the lesion in the soft tissue is more effective in a certain case, which is one of the important CAD systems to develop. However, studies on CAD system using MR images are not as much as the studies using CT. In this paper, we propose an automatic segmentation algorithm of phalanges regions on MR images. Although it has three dimensional information, this is the method for two dimensional algorithm. In other words, we propose for each slice of MR Images. Firstly, phalanges regions in MR images are segmented for coarse regions mainly by watershed algorithm. Next, the segmented results from the previous phase are set as the initial contour. Ultimately, the accurate segmentation of the phalanges on MR images are acquired based on MSGVF snakes.
Extracorporeal Shock Wave Therapy and a New Assessment Tool for Intractable Wounds of the Limbs
Takuro Sugiyama,Murakami Hidetaka,Noguchi Koji,Kawano Koji,Shibata Minami,Shiba Naoto 대한창상학회 2023 Journal of Wound Management and Research Vol.19 No.1
Background: Extracorporeal shock wave therapy (ESWT) is indicated for intractable skin wounds and skin ulcers; however, assessing its efficacy for wounds at the periphery of the extremities may be difficult depending on the wound size (small wounds are challenging to differentiate over time with existing scores) and due to unclear metrics for assessing the amount of exudate and inflammation. To overcome this issue, we developed the Hand and Foot Wound Assessment Tool (HFWAT), comprising area and size, necrotic tissue and healthy granulation tissue, depth, amount of exudate, and inflammation and signs of infection. This study aimed to examine the effect of ESWT on obliterating limb wounds and evaluate outcomes using the HFWAT.Methods: The study included seven patients (four males, three females; 63.4±14.0 years) who visited our hospital between April 2018 and March 2020 and presented with persistent skin wounds on the hands and feet that did not heal despite treatment for more than 2 weeks. Patients received an energy flux density of 0.01 mJ/mm2, which was gradually increased. The HFWAT was used to evaluate the wound, and the pre- and post-ESWT scores were compared.Results: Successful wound healing was observed in all patients following ESWT. The median HFWAT score improved from 9.0 (interquartile range, 9–10) points before ESWT to 0.0 (interquartile range, 0–0) points at the final evaluation (P=0.05, n=7).Conclusion: ESWT was effective for intractable wounds, as demonstrated by the significantly improved HFWAT score. Furthermore, the HFWAT could be valuable for assessing small wounds in the peripheral extremities.
Ikuo Konishi,Kaoru Abiko,Takuma Hayashi,Koji Yamanoi,Ryusuke Murakami,Ken Yamaguchi,Junzo Hamanishi,Tsukasa Baba,Noriomi Matsumura,Masaki Mandai,Kyoto Study Group for Ovarian Cancer Research 대한부인종양학회 2022 Journal of Gynecologic Oncology Vol.33 No.5
Epithelial ovarian cancer remains the lethal gynecological malignancy in women. The representative histotype is high-grade serous carcinoma (HGSC), and most patients with HGSC present at advanced stages with peritoneal dissemination. Since the peritoneal dissemination is the most important factor for poor prognosis of the patients, complete exploration for its molecular mechanisms is mandatory. In this narrative review, being based on the clinical, pathologic, and genomic findings of HGSC, chromosomal instability and epigenetic dynamics have been discussed as the potential drivers for cancer development in the fallopian tube, acquisition of cancer stem cell (CSC)-like properties, and peritoneal metastasis of HGSC. The natural history of carcinogenesis with clonal evolution, and adaptation to microenvironment of peritoneal dissemination of HGSC should be targeted in the novel development of strategies for prevention, early detection, and precision treatment for patients with HGSC.
High-Performance Computation Using a Single-Flux Quantum Accelerator
Farhad Mehdipour,Hiroaki Honda,Hiroshi Kataoka,Koji Inoue,Kazuaki Murakami 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
A large-scale reconfigurable data-path (LSRDP) processor based on single-flux quantum circuits has been proposed to overcome the barriers originating from the CMOS technology. LSRDP is integrated to a general purpose processor in a high-performance computing system to accelerate the execution of data flow graphs extracted from scientific applications. The LSRDP micro-architecture and its specifications will be presented in this paper. A preliminary performance evaluation of the reconfigurable processor will be given as well.
Taisuke Sakaki,Kazuhiko Tsuruta,Yong-Kwun Lee,Nobuhiro Ushimi,Koji Murakami,Yoshimi Matsunoo,Yutaka Ichinose,Tshihiko Shimokawa,Yuko Kamiya,Osamu Kikima,Kanta Aoki,Shinya Morishita,Takehiro Tashiro,Hi 제어로봇시스템학회 2017 제어로봇시스템학회 국제학술대회 논문집 Vol.2017 No.10
The Human Robotics Research Center at Kyushu Sangyo University was established in 2013 as a practical center for the study of robots designed for rehabilitation and care-support. The HRRC seeks to implement robots intended for the medical and care fields to address problems in those fields. We have focused on the development of rehabilitation robots for spinal cord injury patients. Here, we present three different robots we have developed for standing-motion training, primary-walking-pattern training, and practical-walking training.