@article{oai:repo.qst.go.jp:00044785,
 author = {Mori, Shinichiro and Endo, Masahiro and Kohno, Ryosuke and Asakura, Hiroshi and Kohno, Kazutoshi and Yashiro, Tomoyasu and Komatu, Syuhei and Kandatsu, Susumu and Baba, Masayuki and 森 慎一郎 and 遠藤 真広 and 河野 良介 and 矢代 智康 and 小松 秀平 and 神立 進 and 馬場 雅行},
 issue = {3},
 journal = {Radiotherapy and Oncology},
 month = {Sep},
 note = {Purpose: To enhance the precision of treatment planning for tumors which move under respiration, we developed a respiratory-correlated segment reconstruction method (RS) based on the Feldkamp-Davis-Kress algorithm (FDK) which provides high temporal resolution and a high signal-to-noise ratio. We compared full-scan (FS-FDK) and RS-FDK with regard to dose distribution in heavy ion treatment planning.
\nMaterial and Methods: Data acquisition for RS-FDK is done using a respiratory sensing system in cine scan mode with a 256-multi-detector row CT (256-MDCT). To evaluate the accuracy of irradiation of moving tumors, dose distributions with each algorithm were compared in heavy ion treatment planning using beam parameters obtained with FS-FDK.
\nResults: Images obtained using RS-FDK did not show motion artifacts and visualized the edges of the liver and pulmonary vessels more clearly than those with FS-FDK. The iso-dose distributions for FS-FDK covered the target volume; in contrast, RS-FDK with the beam parameter of FS-FDK image provided an insufficient dose to the target and a considerable dose to normal tissues around it. 
\nConclusions: The information provided by RS-FDK improves accuracy in the prescription of dose-to-target volume. Further, RS-FDK allows greater precision in the delivery of radiotherapy, including 4D radiation therapy.},
 pages = {341--348},
 title = {Respiratory Correlated Segment Reconstruction Algorithm Towards Four-dimensional Radiation Therapy Using Carbon Ion Beams},
 volume = {80},
 year = {2006}
}