Analyzing the performance of the planning system by use of AAPM TG 119 test cases

Nithya, L; Raj, N. Arunai Nambi; Rathinamuthu, Sasikumar; Pandey, Manish Bhushan

doi:10.1007/s12194-015-0328-z

Cited by 13 publications

(7 citation statements)

References 11 publications

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“…For 6 MV VMAT plan, DVH parameters are closely agreeing with several published data. [ 12 13 ] For 15 MV IMRT and 15 MV VMAT plan, DVH parameters are closely agreeing with the DVH results of the 6 MV IMRT and 6 MV VMAT delivery of the present study.…”

Section: R Esults and Discussionsupporting

confidence: 88%

Verification of dosimetric commissioning accuracy of intensity modulated radiation therapy and volumetric modulated arc therapy delivery using task Group-119 guidelines

et al. 2017

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Aim:The purpose of this study is to verify the accuracy of the commissioning of intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT) based on the recommendation of the American Association of Physicists in Medicine Task Group 119 (TG-119).Materials and Methods:TG-119 proposes a set of clinical test cases to verify the accuracy of IMRT planning and delivery system. For these test cases, we generated two sets of treatment plans, the first plan using 7–9 IMRT fields and a second plan utilizing two-arc VMAT technique for both 6 MV and 15 MV photon beams. The template plans of TG-119 were optimized and calculated by Varian Eclipse Treatment Planning System (version 13.5). Dose prescription and planning objectives were set according to the TG-119 goals. The point dose (mean dose to the contoured chamber volume) at the specified positions/locations was measured using compact (CC-13) ion chamber. The composite planar dose was measured with IMatriXX Evaluation 2D array with OmniPro IMRT Software (version 1.7b). The per-field relative gamma was measured using electronic portal imaging device in a way similar to the routine pretreatment patient-specific quality assurance.Results:Our planning results are compared with the TG-119 data. Point dose and fluence comparison data where within the acceptable confident limit.Conclusion:From the obtained data in this study, we conclude that the commissioning of IMRT and VMAT delivery were found within the limits of TG-119.

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Section: R Esults and Discussionsupporting

confidence: 88%

Verification of dosimetric commissioning accuracy of intensity modulated radiation therapy and volumetric modulated arc therapy delivery using task Group-119 guidelines

et al. 2017

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“…2015) were also achieved the goal as per TG119 [15,16]. PTV D5 should be less than 8300cGy present study overall results showed the value of 7963±65cGy.…”

Section: Results:-mentioning

confidence: 50%

Imrt and Vmat Commissioning for Versa Hd Linear Accelerator Using Aapm Tg-119.

Sharma¹,

Chander²,

Subramani³

et al. 2017

IJAR

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Aim:Purpose of study is to evaluate the end to end commissioning accuracy of intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) for Versa HD linear accelerator using AAPM TG-119 protocol. Materials & methods: IMRT and VMAT plans were created for TG119 test cases. All the plans were generated using Monaco 5.1 treatment planning system (TPS) for Elekta Versa HD linear accelerator. Prescription and planning goals were as kept as per TG119. For point dose measurement CC01 (0.01cc) ion chamber was used and measurements were carried out as per TG119 specified points in high and low dose gradient regions. Planar dose measurement I'matriXX along with multicube-lite phantom was used. Planned and measured dose planes were compared using gamma index criteria. Results: All planning goals have been achieved as per TG119 report. At high dose point measurement mean dose differences averaged over different techniques planned with different energies for all test cases was 0.002±0.020, and corresponding confidence limit was 0.041. At low dose point measurement mean dose averaged over different techniques planned with different energies for all test cases was -0.004±0.021, and corresponding confidence limit was 0.045. For planar dose measurement gamma passing rate averaged over all test cases was 99.40%±0.40 for 3%/3mm criteria and 97.82%±0.13 for 2%/2mm criteria respectively. Present work overall confidence limit for composite planar dose measurement was 1.38(i.e., 98.62% passing) for 3%/3mm and 2.45(i.e., 97.55% passing) for 2%/2mm criteria. Conclusion: Planning and delivery of IMRT/VMAT has been validated using published TG119 report results.

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“…[1417] In this work, small ionization chamber (Pinpoint) was used instead of larger ionization chamber (Farmer) which was used by other researchers. [141516] The main advantage of this small chamber is its use for increasing the accuracy, in particular, in high-dose gradient and edge of the fields. [18]…”

Section: Discussionmentioning

confidence: 99%

“…[567] Recently, researchers have done TG-119 protocol on different planning systems, different detectors, and LINAC machines with different photon energies and obtained different gamma criteria. [8910111213141516]…”

Section: Introductionmentioning

confidence: 99%

Evaluation of targeted image-guided radiation therapy treatment planning system by use of american association of physicists in medicine task group-119 test cases

2018

J Med Signals Sens

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Background:This study aimed to evaluate the overall accuracy of the beam commissioning criteria of targeted image-guided radiation therapy (TiGRT) treatment planning system (TPS) based on the American Association of Physicists in Medicine (AAPM) Task Group Report 119 (TG-119).Methods:The work was performed using 6 MV energy LINAC with a variable dose rate of 200 MU/min which equipped with the high-quality external TiGRT dynamic multileaf collimator model H. The AAPM TG-119 intensity-modulated radiation therapy (IMRT) commissioning tests are composed of two preliminary tests and four clinical test cases. The clinical tests consisted of mock prostate, mock head and neck, C-shaped target, and multitarget. EDR2 film was used for evaluating the IMRT plans and point dose measured by a Pinpoint chamber positioned in slab phantom. The film analysis was done with the Sun Nuclear Corporation patient software. The dose prescription for each fraction was 200 cGy in mock prostate, mock head and neck, C-shaped target, and multitarget. Dose distributions were analyzed using gamma criteria of 3% and 2% dose difference (DD) and 3 and 2 mm distance to agreement.Results:In all test cases, the gamma criteria for 2%/2 and 3%/3 were found to be 94% and 98%, respectively. Results showed that the average gamma criteria result was in the range of 99.1% to 93% (3%/3, 2%/2) overall test cases.Conclusions:Findings were favorable and in some tests were comparable with the other studies. The dose point values were within the mean values of the range reported by TG-119. Overall, the TiGRT TPS is needed to apply IMRT technique in radiation therapy centers.

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Analyzing the performance of the planning system by use of AAPM TG 119 test cases

Cited by 13 publications

References 11 publications

Verification of dosimetric commissioning accuracy of intensity modulated radiation therapy and volumetric modulated arc therapy delivery using task Group-119 guidelines

Verification of dosimetric commissioning accuracy of intensity modulated radiation therapy and volumetric modulated arc therapy delivery using task Group-119 guidelines

Imrt and Vmat Commissioning for Versa Hd Linear Accelerator Using Aapm Tg-119.

Evaluation of targeted image-guided radiation therapy treatment planning system by use of american association of physicists in medicine task group-119 test cases

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