Development of respiratory phase segmentation algorithm based on the analysis of internal target motion for high accurate respiratory-gated radiation therapy
| Project/Area Number |
26460714
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Medical Physics and Radiological Technology
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
高尾 聖心 北海道大学, 大学病院, 助教 (10614216)
清水 伸一 北海道大学, 医学研究科, 教授 (50463724)
|
|---|
| Project Period (FY) |
2014-04-01 – 2017-03-31
|
| Project Status |
Completed (Fiscal Year 2016)
|
| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
|
|---|
| Keywords | 動体追跡放射線治療 / 4次元放射線治療 / 待ち伏せ照射 / 呼吸位相 / 呼吸性移動対策 / 呼吸性移動 |
|---|
| Outline of Final Research Achievements |
Respiratory-gated irradiation is realized by monitoring three-dimensional location of internal fiducial marker in real-time tumor-tracking radiation therapy. Irradiation accuracy could be improved by monitoring respiratory phase in addition to the marker location. In this research, the novel algorithm of respiratory phase segmentation based on the analysis of three-dimensional trajectory data of the fiducial marker. Irradiation efficiency was evaluated from the log data retrospectively assuming that patient setup was conducted by proposed method. About 20 % of irradiation efficiency was obtained by proposed method even in the small gating windows size, +/- 1 mm. The evaluated efficiency was less than 10 % in conventional setup procedure. Hence, it is expected that the irradiation accuracy can be improved while keeping the acceptable irradiation efficiency.
|
Report
(4 results)
Research Products
(8 results)
-
-
-
-
-
[Presentation] Target Residual Motion During Beam Delivery in Gated Irradiation Using Real-Time Tumor-Tracking Radiotherapy System: Analysis of Simultaneous Motion of Multiple Internal Fiducial Markers2015
Author(s)
N. Miyamoto, M. Ishikawa, R. Suzuki, A. Makinaga, T. Matsuura, S. Takao, Y. Matsuzaki, T. Inoue, N. Katoh, S. Shimizu, R. Onimaru, and H. Shirato
Organizer
57th ASTRO Annual meeting
Place of Presentation
Henry B. Gonzalez Convention Center (San Antonio, USA)
Year and Date
2015-10-18
Related Report
-
[Presentation] Commissioning of Real-Time Imaging Function for Respiratory-Gated Spot-Scanning Proton Beam Therapy2015
Author(s)
N Miyamoto, S Takao, T Matsuura, Y Matsuzaki, T Yamada, Y Fujii, Y Matsuo, T Kidani, Y Egashira, T Umekawa, S Shimizu, H Shirato, K Umegaki
Organizer
2015 AAPM Annual Meeting
Place of Presentation
Anaheim Convention Center (Anaheim, USA)
Year and Date
2015-07-12
Related Report
-
-
