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Yamada T, Takao S, Koyano H, Nihongi H, Fujii Y, Hirayama S, Miyamoto N, Matsuura T, Umegaki K, Katoh N, Yokota I, Shirato H, Shimizu S. Validation of dose distribution for liver tumors treated with real-time-image gated spot-scanning proton therapy by log data based dose reconstruction. JOURNAL OF RADIATION RESEARCH 2021; 62:626-633. [PMID: 33948661 PMCID: PMC8273791 DOI: 10.1093/jrr/rrab024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 09/02/2020] [Indexed: 06/12/2023]
Abstract
In spot scanning proton therapy (SSPT), the spot position relative to the target may fluctuate through tumor motion even when gating the radiation by utilizing a fiducial marker. We have established a procedure that evaluates the delivered dose distribution by utilizing log data on tumor motion and spot information. The purpose of this study is to show the reliability of the dose distributions for liver tumors treated with real-time-image gated SSPT (RGPT). In the evaluation procedure, the delivered spot information and the marker position are synchronized on the basis of log data on the timing of the spot irradiation and fluoroscopic X-ray irradiation. Then a treatment planning system reconstructs the delivered dose distribution. Dose distributions accumulated for all fractions were reconstructed for eight liver cases. The log data were acquired in all 168 fractions for all eight cases. The evaluation was performed for the values of maximum dose, minimum dose, D99, and D5-D95 for the clinical target volumes (CTVs) and mean liver dose (MLD) scaled by the prescribed dose. These dosimetric parameters were statistically compared between the planned dose distribution and the reconstructed dose distribution. The mean difference of the maximum dose was 1.3% (95% confidence interval [CI]: 0.6%-2.1%). Regarding the minimum dose, the mean difference was 0.1% (95% CI: -0.5%-0.7%). The mean differences of D99, D5-D95 and MLD were below 1%. The reliability of dose distributions for liver tumors treated with RGPT-SSPT was shown by the evaluation of the accumulated dose distributions.
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Affiliation(s)
- Takahiro Yamada
- Hitachi Ltd. 1-1 7-chome, Oomika-cho, Hitachi-shi, Ibaraki 319-1292, Japan
- Graduate School of Biomedical Science and Engineering, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
| | - Seishin Takao
- Corresponding author. Seishin Takao, Department of Medical Physics, Hokkaido University Hospital, North14 West5, Kita-ku, Sapporo, Hokkaido 060-8638, Japan, Tel: (+81)11-706-5254, Fax: (+81) 11-706-5255, E-mail address:
| | - Hidenori Koyano
- Department of Medical Physics, Graduate School of Medicine, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
| | - Hideaki Nihongi
- Hitachi Ltd. 1-1 7-chome, Oomika-cho, Hitachi-shi, Ibaraki 319-1292, Japan
| | - Yusuke Fujii
- Hitachi Ltd. 1-1 7-chome, Oomika-cho, Hitachi-shi, Ibaraki 319-1292, Japan
| | - Shusuke Hirayama
- Hitachi Ltd. 1-1 7-chome, Oomika-cho, Hitachi-shi, Ibaraki 319-1292, Japan
- Graduate School of Biomedical Science and Engineering, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
| | - Naoki Miyamoto
- Department of Medical Physics, Hokkaido University Hospital, North14 West5, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
- Division of Quantum Science and Engineering, Faculty of Engineering, Hokkaido University, North13 West8, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
- Global Station of Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
| | - Taeko Matsuura
- Department of Medical Physics, Hokkaido University Hospital, North14 West5, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
- Division of Quantum Science and Engineering, Faculty of Engineering, Hokkaido University, North13 West8, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
- Global Station of Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
| | - Kikuo Umegaki
- Department of Medical Physics, Hokkaido University Hospital, North14 West5, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
- Division of Quantum Science and Engineering, Faculty of Engineering, Hokkaido University, North13 West8, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
- Global Station of Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
| | - Norio Katoh
- Global Station of Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
- Department of Therapeutic Radiology, Faculty of Medicine, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
| | - Isao Yokota
- Department of Biostatistics, Graduate School of Medicine, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
| | - Hiroki Shirato
- Global Station of Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
- Department of Proton Beam Therapy, Faculty of Medicine, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
| | - Shinichi Shimizu
- Department of Medical Physics, Hokkaido University Hospital, North14 West5, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
- Global Station of Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
- Department of Radiation Medical Science and Engineering, Faculty of Medicine, Hokkaido University, North15 West7, Kita-ku, Sapporo, Hokkaido 060-8638, Japan
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Takayanagi T, Uesaka T, Nakamura Y, Unlu MB, Kuriyama Y, Uesugi T, Ishi Y, Kudo N, Kobayashi M, Umegaki K, Tomioka S, Matsuura T. On-line range verification for proton beam therapy using spherical ionoacoustic waves with resonant frequency. Sci Rep 2020; 10:20385. [PMID: 33230208 PMCID: PMC7683547 DOI: 10.1038/s41598-020-77422-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/10/2020] [Indexed: 01/01/2023] Open
Abstract
In contrast to conventional X-ray therapy, proton beam therapy (PBT) can confine radiation doses to tumours because of the presence of the Bragg peak. However, the precision of the treatment is currently limited by the uncertainty in the beam range. Recently, a unique range verification methodology has been proposed based on simulation studies that exploit spherical ionoacoustic waves with resonant frequency (SPIREs). SPIREs are emitted from spherical gold markers in tumours initially introduced for accurate patient positioning when the proton beam is injected. These waves have a remarkable property: their amplitude is linearly correlated with the residual beam range at the marker position. Here, we present proof-of-principle experiments using short-pulsed proton beams at the clinical dose to demonstrate the feasibility of using SPIREs for beam-range verification with submillimetre accuracy. These results should substantially contribute to reducing the range uncertainty in future PBT applications.
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Affiliation(s)
- Taisuke Takayanagi
- Graduate School of Biomedical Science and Engineering, Hokkaido University, North-13 West-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.,Hitachi Ltd, 1-1 7-chome, Omika-cho, Hitachi-shi, Ibaraki, 319-1292, Japan
| | - Tomoki Uesaka
- Graduate School of Biomedical Science and Engineering, Hokkaido University, North-13 West-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Yuta Nakamura
- Graduate School of Engineering, Hokkaido University, North-13 West-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Mehmet Burcin Unlu
- Department of Physics, Bogazici University, Bebek, Istanbul, 34342, Turkey
| | - Yasutoshi Kuriyama
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka, 590-0494, Japan
| | - Tomonori Uesugi
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka, 590-0494, Japan
| | - Yoshihiro Ishi
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka, 590-0494, Japan
| | - Nobuki Kudo
- Faculty of Information Science and Technology, Hokkaido University, North-14, West-9, Kita-ku, Sapporo, Hokkaido, 060-0814, Japan
| | - Masanori Kobayashi
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino, Chiba, 275-0016, Japan
| | - Kikuo Umegaki
- Faculty of Engineering, Hokkaido University, North-13 West-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.,Proton Beam Therapy Center, Hokkaido University Hospital, North-15 West-7, Kita-ku, Sapporo, Hokkaido, 060-8638, Japan
| | - Satoshi Tomioka
- Faculty of Engineering, Hokkaido University, North-13 West-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Taeko Matsuura
- Faculty of Engineering, Hokkaido University, North-13 West-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan. .,Proton Beam Therapy Center, Hokkaido University Hospital, North-15 West-7, Kita-ku, Sapporo, Hokkaido, 060-8638, Japan.
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Miyamoto N, Yokokawa K, Takao S, Matsuura T, Tanaka S, Shimizu S, Shirato H, Umegaki K. Dynamic gating window technique for the reduction of dosimetric error in respiratory-gated spot-scanning particle therapy: An initial phantom study using patient tumor trajectory data. J Appl Clin Med Phys 2020; 21:13-21. [PMID: 32068347 PMCID: PMC7170289 DOI: 10.1002/acm2.12832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 01/06/2020] [Accepted: 01/14/2020] [Indexed: 11/22/2022] Open
Abstract
Spot-scanning particle therapy possesses advantages, such as high conformity to the target and efficient energy utilization compared with those of the passive scattering irradiation technique. However, this irradiation technique is sensitive to target motion. In the current clinical situation, some motion management techniques, such as respiratory-gated irradiation, which uses an external or internal surrogate, have been clinically applied. In surrogate-based gating, the size of the gating window is fixed during the treatment in the current treatment system. In this study, we propose a dynamic gating window technique, which optimizes the size of gating window for each spot by considering a possible dosimetric error. The effectiveness of the dynamic gating window technique was evaluated by simulating irradiation using a moving target in a water phantom. In dosimetric characteristics comparison, the dynamic gating window technique exhibited better performance in all evaluation volumes with different effective depths compared with that of the fixed gate approach. The variation of dosimetric characteristics according to the target depth was small in dynamic gate compared to fixed gate. These results suggest that the dynamic gating window technique can maintain an acceptable dose distribution regardless of the target depth. The overall gating efficiency of the dynamic gate was approximately equal or greater than that of the fixed gating window. In dynamic gate, as the target depth becomes shallower, the gating efficiency will be reduced, although dosimetric characteristics will be maintained regardless of the target depth. The results of this study suggest that the proposed gating technique may potentially improve the dose distribution. However, additional evaluations should be undertaken in the future to determine clinical applicability by assuming the specifications of the treatment system and clinical situation.
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Affiliation(s)
- Naoki Miyamoto
- Division of Quantum Science and EngineeringFaculty of EngineeringHokkaido UniversitySapporoJapan
- Global Station for Quantum Medical Science and EngineeringGlobal Institution for Collaborative Research and Education (GI‐CoRE)Hokkaido UniversitySapporoJapan
- Department of Medical PhysicsHokkaido University HospitalSapporoJapan
| | - Kouhei Yokokawa
- Division of Quantum Science and EngineeringFaculty of EngineeringHokkaido UniversitySapporoJapan
| | - Seishin Takao
- Global Station for Quantum Medical Science and EngineeringGlobal Institution for Collaborative Research and Education (GI‐CoRE)Hokkaido UniversitySapporoJapan
- Department of Medical PhysicsHokkaido University HospitalSapporoJapan
| | - Taeko Matsuura
- Division of Quantum Science and EngineeringFaculty of EngineeringHokkaido UniversitySapporoJapan
- Global Station for Quantum Medical Science and EngineeringGlobal Institution for Collaborative Research and Education (GI‐CoRE)Hokkaido UniversitySapporoJapan
- Department of Medical PhysicsHokkaido University HospitalSapporoJapan
| | - Sodai Tanaka
- Division of Quantum Science and EngineeringFaculty of EngineeringHokkaido UniversitySapporoJapan
- Department of Medical PhysicsHokkaido University HospitalSapporoJapan
| | - Shinichi Shimizu
- Global Station for Quantum Medical Science and EngineeringGlobal Institution for Collaborative Research and Education (GI‐CoRE)Hokkaido UniversitySapporoJapan
- Department of Medical PhysicsHokkaido University HospitalSapporoJapan
- Department of Radiation Medical Science and EngineeringFaculty of MedicineHokkaido UniversitySapporoJapan
| | - Hiroki Shirato
- Global Station for Quantum Medical Science and EngineeringGlobal Institution for Collaborative Research and Education (GI‐CoRE)Hokkaido UniversitySapporoJapan
- Department of Radiation MedicineFaculty of MedicineHokkaido UniversitySapporoJapan
| | - Kikuo Umegaki
- Division of Quantum Science and EngineeringFaculty of EngineeringHokkaido UniversitySapporoJapan
- Global Station for Quantum Medical Science and EngineeringGlobal Institution for Collaborative Research and Education (GI‐CoRE)Hokkaido UniversitySapporoJapan
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Hoshina RM, Matsuura T, Umegaki K, Shimizu S. A Literature Review of Proton Beam Therapy for Prostate Cancer in Japan. J Clin Med 2019; 8:jcm8010048. [PMID: 30621278 PMCID: PMC6352078 DOI: 10.3390/jcm8010048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 12/23/2018] [Accepted: 12/28/2018] [Indexed: 12/14/2022] Open
Abstract
Aim: Patients of proton beam therapy (PBT) for prostate cancer had been continuously growing in number due to its promising characteristics of high dose distribution in the tumor target and a sharp distal fall-off. Considering the large number of proton beam facilities in Japan, the further increase of patients undergoing this treatment is due to the emendations by Japanese National Health Insurance (NHI) and the development of medical equipment and technology, it is necessary to know what kind of research and advancements has been done on proton therapy for prostate cancer in the country. For these reasons, this literature review was conducted. The aim of this review is to identify and discuss research studies of proton beam therapy for prostate cancer in Japan. These include observational, interventional, and secondary data analysis of published articles. Method: A literature review on published works related to proton beam therapy for prostate cancer in Japan was conducted using articles that were gathered in the PubMed database of June 2018. We went through abstracts and manuscripts written in English with the keywords ‘proton beam therapy’, ‘prostate cancer’, and ‘Japan’. Results: A total of 23 articles were included. Fourteen articles were observational studies, most of which focused on the adverse effects of Proton Beam Therapy (PBT). Seven articles were interventional studies related on treatment planning, equipment parts, as well as target positioning. Two were secondary data analysis. The included studies were published in 13 different journals by different institutions using various equipment. Conclusion: Despite the favorable results of proton beam therapy, future research should include more patients and longer follow-up schedules to clarify the definitive role of PBT, yet, up to recent retrospective studies, included in this paper, concluded that PBT can be a suitable treatment option for localized prostate cancer. In addition, interventional studies were conducted by several institutions to further embellish proton therapy.
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Affiliation(s)
- Rika Maglente Hoshina
- Faculty of Medicine and Surgery, University of Santo Tomas, España, Manila 1002, Philippines.
| | - Taeko Matsuura
- Proton Beam Therapy Center, Hokkaido University Hospital, Sapporo 060-8648, Japan.
- Global Station for Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo 060-8638, Japan.
- Division of Quantum Science and Engineering, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
| | - Kikuo Umegaki
- Proton Beam Therapy Center, Hokkaido University Hospital, Sapporo 060-8648, Japan.
- Global Station for Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo 060-8638, Japan.
- Division of Quantum Science and Engineering, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
| | - Shinichi Shimizu
- Proton Beam Therapy Center, Hokkaido University Hospital, Sapporo 060-8648, Japan.
- Global Station for Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo 060-8638, Japan.
- Department of Radiation Oncology, Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan.
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