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Yoshinori Sakurai,Hiroki Tanaka,Takushi Takata,Nozomi Fujimoto,Minoru Suzuki,Shinichiro Masunaga,Yuko Kinashi,Natsuko Kondo,Masaru Narabayashi,Yosuke Nakagawa,Tsubasa Watanabe,Koji Ono,Akira Maruhashi 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.67 No.1
At the Kyoto University Research Reactor Institute (KURRI), a clinical study of boron neutron capture therapy (BNCT) using a neutron irradiation facility installed at the research nuclear reactor has been regularly performed since February 1990. As of November 2014, 510 clinical irradiations were carried out using the reactor-based system. The world’s first accelerator-based neutron irradiation system for BNCT clinical irradiation was completed at this institute in early 2009, and the clinical trial using this system was started in 2012. A shift of BCNT from special particle therapy to a general one is now in progress. To promote and support this shift, improvements to the irradiation system, as well as its preparation, and improvements in the physical engineering and the medical physics processes, such as dosimetry systems and quality assurance programs, must be considered. The recent advances in BNCT at KURRI are reported here with a focus on physical engineering and medical physics topics.
( Takashi Hoshino ),( Toshifumi Watanabe ),( Yusuke Nakagawa ),( Hiroki Katagiri ),( Nobutake Ozeki ),( Toshiyuki Ohara ),( Mikio Shioda ),( Yuji Kono ),( Ichiro Sekiya ),( Hideyuki Koga ) 대한슬관절학회 2021 대한슬관절학회지 Vol.33 No.-
Purpose: This study assessed the clinical outcomes of periprosthetic joint infection patients who underwent twostage revision total knee arthroplasty with antibiotic-loaded cement spacers fabricated using a handmade silicone mold. Materials and methods: This study included seven patients (average age 77 years, average follow-up time 54 months) who underwent surgery at our hospital between 2009 and 2013. Clinical outcomes including knee scores, function scores, knee range of motion, and walking ability at the final observation, period from the primary total knee arthroplasty to implant removal, period from implant removal to revision total knee arthroplasty, and followup period after revision total knee arthroplasty were investigated. Results: At the final follow-up, the average knee range of motion was 99°, with no significant differences at each stage; average knee and function scores were 84 and 77, respectively. With cement spacers, five patients were able to walk with a t-cane. No recurrence of infection was observed. Conclusions: The clinical outcomes of the current case series demonstrated good knee function with preserved walking ability, without any recurrence of periprosthetic joint infection. This study suggests that using a handmade silicone mold could be an effective option for periprosthetic joint infection after a total knee arthroplasty.
Naoki Okano,Yoshinori Igarashi,Ken Ito,Saori Mizutani,Hiroki Nakagawa,Kouji Watanabe,Yuuto Yamada,Kensuke Yoshimoto,Yuusuke Kimura,Susumu Iwasaki,Kensuke Takuma,Seiichi Hara,Yuui Kishimoto 대한소화기내시경학회 2021 Clinical Endoscopy Vol.54 No.5
Background/Aims: Bleeding is a complication of endoscopic snare papillectomy for ampullary tumors. This study aimed toinvestigate the clinical efficacy of hypertonic saline-epinephrine (HSE) local injection before endoscopic papillectomy for preventionof bleeding. Methods: We retrospectively reviewed the data of 107 consecutive patients with ampullary tumors who underwent endoscopicpapillectomy. The rates of en bloc resection, pathological resection margins, and prevention of immediate or delayed bleeding in thesimple snaring resection group (Group A) and the HSE injection group (Group B) were compared. Results: A total of 44 and 63 patients were enrolled in Groups A and B, respectively. The total complete resection rate was 89.7%(96/107); the clinical complete resection rates in Group A and Group B were 86.3% (38/44) and 92.1% (58/63), respectively (p=0.354). Post-papillectomy bleeding occurred in 22 patients. In Groups A and B, the immediate bleeding rates were 20.5% (9/44) and 4.8%(3/63), respectively (p=0.0255), while the delayed bleeding rates were 7% (3/44) and 11% (7/63), respectively (p=0.52). The rates ofpositive horizontal and vertical pathological margin in both groups were 27% and 16%, respectively. Conclusions: HSE local injection was effective in preventing immediate bleeding and was useful for safely performing endoscopicpapillectomy for ampullary tumors.
Yui Kishimoto,Naoki Okano,Ken Ito,Kensuke Takuma,Seiichi Hara,Susumu Iwasaki,Kensuke Yoshimoto,Yuto Yamada,Koji Watanabe,Yusuke Kimura,Hiroki Nakagawa,Yoshinori Igarashi 대한소화기내시경학회 2022 Clinical Endoscopy Vol.55 No.2
Background/Aims: Endoscopic evaluation of intraductal papillary mucinous neoplasms (IPMNs) is useful in determining whetherthe lesions are benign or malignant. This study aimed to examine the usefulness of peroral pancreatoscopy (POPS) in determiningthe prognosis of IPMNs. Methods: POPS with videoscopy was performed using the mother–baby scope technique. After surgery, computed tomography/magnetic resonance cholangiopancreatography or ultrasonography and blood tests were performed every 6 months during thefollow-up. Results: A total of 39 patients with main pancreatic duct (MPD)–type IPMNs underwent POPS using a videoscope, and theprotrusions in the MPD were observed in 36 patients. The sensitivity and specificity of cytology/biopsy performed at the time ofPOPS were 85% and 87.5%, respectively. Of 19 patients who underwent surgery, 18 (95%) patients had negative surgical margins and1 (5%) patient had a positive margin. Conclusions: In IPMNs with dilatation of the MPD, POPS is considered effective if the lesions can be directly observed. Thediagnosis of benign and malignant lesions is possible depending on the degree of lesion elevation. However, in some cases, slightlyelevated lesions may increase in size during the follow-up or multiple lesions may be simultaneously present; therefore, carefulfollow-up is necessary.