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Outpatient Treatment Center

Yoshihisa Muramatsu, Mitsuhiro Yoshida, Kazuyoshi Yamano, Kazutoshi Yokoyama, Koichi Nemoto, Takaki Ariji, Kuniji Naoi, Keisuke Takahashi, Naotaka Yamazawa, Satoe Kito, Hiroyuki Ohta, Hajime Ohyoshi, Kaoru Ikeno, Tsunemichi Akita, Keiichi Nomura, Hiroyuki Shitara, Daiki Kumagai, Fuminori Shimizu, Shogo Amano, Asami Tanaka, Ryuzo Uehara, Tatsuya Mogaki, Hiromi Baba, Shota Hosokawa, Kaori Yanagisawa, Syun Aoyagi, Yukihiro Matsukawa, Yuto Iwabuchi, Yuki Tanaka, Toshiyuki Shibuya, Kazuto Kano, Hikaru Sugahara, Hiroyuki Asai, Fumiya Tanaka, Toshiya Rachi, Daiki Kanke, Taku Tochinai, Yohei Takeda, Makoto Gohdo, Tomohiro Ohishi, Hiroshi Tsuruoka, Moeka Funakoshi, Hikari Inagawa, Hirokazu Kobayashi

Routine activities and research activities

Subsequent to the previous year, the number of radiographic examinations and radiation therapies in 2015 increased, as shown in Table 1.

Due to the increase in the number of clinical trials, the number of computed tomography (CT) examinations significantly increased. By reinforcing the medical cooperation service, the number of online reserved PET-CT examinations and Lowdose lung cancer CT screenings for working people has increased.

In the photon radiation therapy section, stereotactic irradiation targeting the liver was launched. By using a linear gold marker, CT image acquisition under respiratory gating and respiratory-gated irradiation was possible. In the proton therapy section, line scanning irradiation, which provides dose administration localized to a small area, has been launched.

Triennial inspections and checks under the “Law concerning Prevention of Radiation Hazards due to Radioisotopes, etc.” were completed without any problems being highlighted.

Research findings

In collaboration with manufacturers (CH26088), to study dose simulation in CT examinations, the simulation environment was constructed at a level approximately 10% that of the actual measurement.

By participating in the Ishigaki section (Grantsin-Aid for Scientific Research: No.25713028), software that manages the exposure dose of radiological examinations is under development. For intensity-modulated radiation therapy (IMRT), as a verification of the dose accuracy of the plan, a treatment planning system based on independent software and a 3D radiation counter were proposed.

These achievements were presented at the study group and in papers of both domestic and overseas scientific societies.

Education

Radiological technologists whose experience was less than three years were given the opportunity to rotate between the radiation diagnostics department and the radiation therapy department, which helped them study a variety of radiation technologies.

All staff are actively involved in efforts to raise awareness such as highlighting the fact that radiation technology is a work in progress; this was reported through multipoint conferencing. As for medical safety education and associated activities, a movie, which prepares for shock caused by contrast medium, was filmed, a magnetic field experience program was carried out with new employees as targets and use of an assessment sheet for radiation therapy patients was started. Also, two radiological technologists obtained overseas training grants, and visited London in the UK and Texas in the United States. Three radiological technologists studied on a master's course and one studied on a graduate school doctoral course in 2015. One of them received a master's degree. In addition to that, we also accepted and educated 12 trainees from three universities in radiological technology.

Future prospects

On the basis of medical safety, we plan to provide more efficient, high-accuracy radiation inspection and radiation treatment. Because international clinical trials are increasing, verifying the quality management of medical equipment in accordance with international approaches is necessary. Introducing the information and communication technology (ICT) as the recording evaluation and storage means in accordance with legal provisions, we will facilitate the conversion to electronic media from paper media.

Table 1. Transition of Number of Radiological Examination and Radiation Therapy by Year.

List of papers published in 2015

Journal

  1. Fujii K, Nomura K, Muramatsu Y, Takahashi K, Obara S, Akahane K, Satake M. Evaluation of organ doses in adult and paediatric CT examinations based on Monte Carlo simulations and in-phantom dosimetry. Radiat Prot Dosimetry, 165:166-171, 2015
  2. Kakinuma R, Moriyama N, Muramatsu Y, Gomi S, Suzuki M, Nagasawa H, Kusumoto M, Aso T, Muramatsu Y, Tsuchida T, Tsuta K, Maeshima AM, Tochigi N, Watanabe S, Sugihara N, Tsukagoshi S, Saito Y, Kazama M, Ashizawa K, Awai K, Honda O, Ishikawa H, Koizumi N, Komoto D, Moriya H, Oda S, Oshiro Y, Yanagawa M, Tomiyama N, Asamura H. Ultra-high-resolution computed tomography of the lung: image quality of a prototype scanner. PLoS One, 10:e0137165, 2015
  3. Kakinuma R, Moriyama N, Muramatsu Y, Gomi S, Suzuki M, Nagasawa H, Kusumoto M, Aso T, Muramatsu Y, Tsuchida T, Tsuta K, Maeshima AM, Tochigi N, Watanabe SI, Sugihara N, Tsukagoshi S, Saito Y, Kazama M, Ashizawa K, Awai K, Honda O, Ishikawa H, Koizumi N, Komoto D, Moriya H, Oda S, Oshiro Y, Yanagawa M, Tomiyama N, Asamura H. Correction: Ultra-high-resolution computed tomography of the lung: image quality of a prototype scanner. PLoS One, 10:e0145357, 2015
  4. Maedera F, Inoue K, Sugino M, Sano R, Shimizu H, Tsuruoka H, Fukushi M. Cesium concentrations in shell of japanese mitten crab around Fukushima Daiichi Nuclear Power Plant. Radiation Emergency Medicine, 4:60-67, 2015

Book

  1. Tsuruoka H, Inoue K, Sakano Y, Hamada M, Shimizu H, Fukushi M. Variation of radiocesium concentrations in cedar pollen in the Okutama area since the Fukushima Daiichi Nuclear Power Plant accident. In: Radiat Prot Dosimetry, pp 219-222, 2015