カガク ホウシャセン リョウホウ ヲ ウケル トウガイブガン カンジャ ノ ヒフショウガイ ノ ハッセイ ニ カンスル チョウサ

研究報

ピロリン酸シンチグラフィ検査におけるLAO 45°追加撮像の取り組み

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FDG-PET/CTで集積を認めた膵神経鞘腫の1例

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北海道医療大学歯学部付属病院口腔外科における紹介患者の臨床統計

Oral surgery is a specific medical service, and introduced patients are very important for the department of oral surgery of our dental school hospital as a tertiary medical facility. Therefore, it is significant to investigate details related to this. The subjects of this study are patients introduced from other medical facilities to the Department of Oral surgery of the Health Sciences University of Hokkaido as first-time patients from April 1995 to March 2000. The number, proportion of first-time patients, diseases, hospitalization needs, and place of residence of introduced patients, and the number of facilities introducing patients by districts were investigated. The results are shown below. 1) 757 (24%) of 3206 first-time patients in our department were introduced patients in these five years. 1) 757 (24%) of 3206 first-time patients in our department were introduced patients in these five years. 2) The complaints involved wisdom teeth-related lesions: 246 (33%) ; odontogenous infections unrelated to wisdom teeth: 72(10%) ; odontogenic cysts: 69 (9%), temporomandibular complaints: 49(6%) ; and others: 323(4%) . 3) 212(26%) of the patients were hospitalized. 4) The number of facilities introducing patients was 177. 5) The introduced patients came from Sorachi: 336(44%), Ishikari: 272 (36%), Rumoi: 43 (6%) and other districts: 106(14%) . His concluded that it is necessary to maintain close relations with medical facilities and to fully inform them of our oral surgery service as a tertiary medical facility for more patients to be introduced

Observation results by the TAMA300 detector on gravitational wave bursts from stellar-core collapses

We present data-analysis schemes and results of observations with the TAMA300 gravitational-wave detector, targeting burst signals from stellar-core collapse events. In analyses for burst gravitational waves, the detection and fake-reduction schemes are different from well-investigated ones for a chirp-wave analysis, because precise waveform templates are not available. We used an excess-power filter for the extraction of gravitational-wave candidates, and developed two methods for the reduction of fake events caused by non-stationary noises of the detector. These analysis schemes were applied to real data from the TAMA300 interferometric gravitational wave detector. As a result, fake events were reduced by a factor of about 1000 in the best cases. The resultant event candidates were interpreted from an astronomical viewpoint. We set an upper limit of 2.2x10^3 events/sec on the burst gravitational-wave event rate in our Galaxy with a confidence level of 90%. This work sets a milestone and prospects on the search for burst gravitational waves, by establishing an analysis scheme for the observation data from an interferometric gravitational wave detector