[논문]A dose comparison study between XVI®and OBI®CBCT systems : Dose comparison between XVI and OBI

Song, William Y.; Kamath, Srijit; Ozawa, Shuichi; Al Ani, Shlomi; Chvetsov, Alexei; Bhandare, Niranjan; Palta, Jatinder R.; Liu, Chihray; Li, Jonathan G.

doi:10.1118/1.2825619

A dose comparison study between XVI®and OBI®CBCT systems : Dose comparison between XVI and OBI

Medical physics, v.35 no.2, 2008년, pp.480 - 486

Song, William Y. , Kamath, Srijit , Ozawa, Shuichi , Al Ani, Shlomi , Chvetsov, Alexei , Bhandare, Niranjan , Palta, Jatinder R. , Liu, Chihray , Li, Jonathan G.

Abstract ▼ AI-Helper

The purpose of this study is to establish a comprehensive set of dose measurements data obtained from the X-ray Volumetric Imager (XVI, Elekta Oncology Systems) and the On-Board Imager (OBI, Varian Medical Systems) cone-beam CT (CBCT) systems. To this end, two uniform-density cylindrical acrylic phantoms with diameters of 18 cm (head phantom) and 30 cm (body phantom) were used for all measurements. Both phantoms included ion chamber placement holes in the center and at periphery (2 cm below surface). For the XVI unit, the four standard manufacturer-supplied protocols were measured. For the OBI unit, the full bow tie and half bow tie (and no bow tie) filters were used in combination with the two scanning modes; namely, full-fan and half-fan. The total milliampere x seconds (mA s) setting was also varied for each protocol to establish the linear relationship between the dose deposited and the mA s used (with all other factors being held constant). Half-value layers in aluminum (Al) were also measured for beam characteristic determination. For the XVI unit, the average dose ranged from 0.1 to 3.5 cGy with the highest dose measured using the "prostate" protocol with the body phantom. For the OBI unit, the average dose ranged from 1.1 to 8.3 cGy with the highest dose measured using the full-fan protocol with the head phantom. The measured doses were highly linear as a function of mA s, for both units, where the measurement points followed a linear relationship very closely with R2 > 0.99 for all cases. Half-value layers were between 4.6- and 7.0-mm-Al for the two CBCT units where XVI generally had more penetrating beams at the similar kVp settings. In conclusion, a comprehensive series of dose measurements were performed on the XVI and the OBI CBCT units. In the process, many of the important similarities and differences between the two systems were observed and summarized in this work.

참고문헌 (33)

Jaffray Flat-panel cone-beam computed tomography for image-guided radiation therapy Int. J. Radiat. Oncol. Biol. Phys. 53 1337 2002 10.1016/S0360-3016(02)02884-5

상세보기
Jaffray Emergent technologies for 3-dimensional image-guided radiation delivery Semin. Radiat. Oncol. 15 208 2005 10.1016/j.semradonc.2005.01.003

상세보기
Amies A multi-platform approach to image guided radiation therapy (IGRT) Med. Dosim. 31 12 2006 10.1016/j.meddos.2005.12.013

상세보기
Yoo A quality assurance program for the on-board imager Med. Phys. 10.1118/1.2362872 33 4431 2006

상세보기
Oldham Cone-beam-CT guided radiation therapy: A model for on-line application Radiother. Oncol. 10.1016/j.radonc.2005.03.026 75 271 2005

상세보기
Thilmann Correction of patient positioning errors based on in-line cone beam CTs: Clinical implementation and first experiences Radiat. Oncol. 1 16 2006 10.1186/1748-717X-1-16

상세보기
Ding Characteristics of kilovoltage x-ray beams used for cone-beam computed tomography in radiation therapy Phys. Med. Biol. 10.1088/0031-9155/52/6/004 52 1595 2007

상세보기
Mackie Image guidance for precise conformal radiotherapy Int. J. Radiat. Oncol. Biol. Phys. 56 89 2003 10.1016/S0360-3016(03)00090-7

상세보기
Song Image-guided adaptive radiation therapy (IGART): Radiobiological and dose escalation considerations for localized carcinoma of the prostate Med. Phys. 10.1118/1.1935775 32 2193 2005

상세보기
Song Dosimetric evaluation of daily rigid and non-rigid geometric correction strategies during on-line image-guided radiation therapy (IGRT) of prostate cancer Med. Phys. 10.1118/1.2405325 34 352 2007

상세보기
Martinez Improvement in dose escalation using the process of adaptive radiotherapy combined with three-dimensional conformal or intensity-modulated beams for prostate cancer Int. J. Radiat. Oncol. Biol. Phys. 50 1226 2001 10.1016/S0360-3016(01)01552-8

상세보기
De Crevoisier Increased risk of biochemical and local failure in patients with distended rectum on the planning CT for prostate cancer radiotherapy Int. J. Radiat. Oncol. Biol. Phys. 62 965 2005 10.1016/j.ijrobp.2004.11.032

상세보기
Ghilezan Online image-guided intensity-modulated radiotherapy for prostate cancer: How much improvement can we expect? A theoretical assessment of clinical benefits and potential dose escalation by improving precision and accuracy of radiation delivery Int. J. Radiat. Oncol. Biol. Phys. 60 1602 2004 10.1016/j.ijrobp.2004.07.709

상세보기
Schaly Dosimetric impact of image-guided 3D conformal radiation therapy of prostate cancer Phys. Med. Biol. 10.1088/0031-9155/50/13/008 50 3083 2005

상세보기
Happersett A study of the effects of internal organ motion on dose distribution in conformal prostate treatments Radiother. Oncol. 10.1016/S0167-8140(03)00039-2 66 263 2003

상세보기
Islam Patient dose from kilovoltage cone beam computed tomography imaging in radiation therapy Med. Phys. 10.1118/1.2198169 33 1573 2006

상세보기
Wen Dose delivered from Varian's CBCT to patients receiving IMRT for prostate cancer Phys. Med. Biol. 10.1088/0031-9155/52/8/015 52 2267 2007

상세보기
Murphy The management of imaging dose during image-guided radiotherapy: Report of the AAPM Task Group 75 Med. Phys. 10.1118/1.2775667 34 4041 2007

상세보기
Zelefsky High-dose intensity modulated radiation therapy for prostate cancer: early toxicity and biochemical outcome in 772 patients Int. J. Radiat. Oncol. Biol. Phys. 53 1111 2002 10.1016/S0360-3016(02)02857-2

상세보기
Zelefsky Clinical experience with intensity modulated radiation therapy (IMRT) in prostate cancer Radiother. Oncol. 10.1016/S0167-8140(99)00100-0 55 241 2000

상세보기
Ma AAPM protocol for 40-300 kV x-ray beam dosimetry in radiotherapy and radiobiology Med. Phys. 10.1118/1.1374247 28 868 2001

상세보기
Cho Cone-beam CT for radiotherapy applications Phys. Med. Biol. 10.1088/0031-9155/40/11/007 40 1863 1995

상세보기
Graham Compensators for dose and scatter management in cone-beam computed tomography Med. Phys. 10.1118/1.2740466 34 2691 2007

상세보기
P. J. P. Lin et al. 1993 www.aapm.org
Shope A method for describing the doses delivered by transmission x-ray computed tomography Med. Phys. 10.1118/1.594995 8 488 1991

상세보기
McNitt-Gray AAPM/RSNA physics tutorial for residents: Topics in CT. Radiation dose in CT Radiographics 22 1541 2002 10.1148/rg.226025128

상세보기
Dixon A new look at CT dose measurement: Beyond CTDI Med. Phys. 10.1118/1.1576952 30 1272 2003

상세보기
Brenner Is it time to retire the CTDI for CT quality assurance and dose optimization? Med. Phys. 10.1118/1.2040747 32 3225 2005

상세보기
Fahrig Dose and image quality for a cone-beam C-arm CT system Med. Phys. 10.1118/1.2370508 33 4541 2006

상세보기
Nickoloff Influence of phantom diameter, kVp and scan mode upon computed tomography dose index Med. Phys. 10.1118/1.1543149 30 395 2003

상세보기
Hill The variation in biological effectiveness of x-rays and gamma rays with energy Radiat. Prot. Dosimetry 112 471 2004 10.1093/rpd/nch091

상세보기
Yoo Dosimetric feasibility of cone-beam CT-based treatment planning compared to CT-based treatment planning Int. J. Radiat. Oncol. Biol. Phys. 66 1553 2006 10.1016/j.ijrobp.2006.08.031

상세보기
Yang Evaluation of on-board kV cone beam CT (CBCT)-based dose calculation Phys. Med. Biol. 10.1088/0031-9155/52/3/011 52 685 2007

상세보기

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관 관리번호, 논문명, 대등논문명, 저자 , 저널/프로시딩명, 발행기관, 발행년, 발행언어, 권, 호, 시작페이지, 끝페이지, ISBN, ISSN, 주제분야, 키워드, 초록(한글), 초록(영문), 저자(소속기관)
저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

A dose comparison study between XVI®and OBI®CBCT systems : Dose comparison between XVI and OBI

Abstract ▼ AI-Helper

참고문헌 (33)

이 논문을 인용한 문헌

관련 콘텐츠

원문 URL 링크

이 논문과 함께 이용한 콘텐츠

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트