SU-E-T-258: Commissioning of a Commercial Treatment Planning System Verification Software Package

2013 ◽  
Vol 40 (6Part14) ◽  
pp. 263-264 ◽  
Author(s):  
C Nelson ◽  
S Davidson ◽  
B Mason ◽  
S Kirsner
Keyword(s):  
Treatment Planning ◽  
Software Package ◽  
Planning System ◽  
Treatment Planning System ◽  
System Verification

Dose assessment to the Bladder during Intracavitary Brachytherapy of the Cervix using Gafchromic films

2017 ◽  
pp. 97-105
Author(s):  
J. Avevor ◽  
S. N. A. Tagoe ◽  
J. H. Amuasi ◽  
J. J. Fletcher ◽  
I. Shirazu
Keyword(s):  
Treatment Planning ◽  
Maximum Dose ◽  
Mean Difference ◽  
Planning System ◽  
Treatment Planning System ◽  
In Vivo Dosimetry ◽  
Intracavitary Brachytherapy ◽  
Gafchromic Films ◽  
System Verification ◽  
The Mean

Intracavitary brachytherapy procedures are used for cervical cancer treatment, by the insertion of radioactive implants directly into the diseased tissues. During the treatment process, the bladder together with surrounding tissues are exposed to radiations. Clinical complications do results from high doses received by parts of the bladder during intracavitary brachytherapy of the cervix. The aim of this study is to assess the dose delivered to the bladder using Gafchromic films and compare it with the optimized dose calculated by the Brachy Prowess 4.60 Treatment Planning System (TPS) reports for empirical validation and system verification. Fletcher suite applicators were used to perform thirty (30) different clinical insertions on the constructed cervix phantom and results evaluated. The mean difference between the doses calculated by the TPS and the doses measured by the Gafchromic film for the bladder at the distance of 0.5cm from the edge of the film was 16.3 % (range -35.33 to +39.37). At a distance of 1.5cm for the bladder, the mean difference was 19.4% (range -49.48 to +30.39). The TPS calculated maximum dose was typically higher than the measured maximum dose. However, in some cases, the measured doses were found to be higher than the doses calculated by the TPS. This is due to positional inaccuracies of the sources during treatment planning. It is recommended that in vivo dosimetry be performed in addition to computation.

scholarly journals Using beam profile inflection point in process of treatment planning system verification

2021 ◽  
Author(s):  
Jacek Wendykier ◽  
Aleksandra Grządziel ◽  
Barbara Bekman ◽  
Marcin Bieniasiewicz ◽  
Adam Bekman ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Inflection Point ◽  
Beam Profile ◽  
Planning System ◽  
Treatment Planning System ◽  
System Verification

Dose Assessment of the Rectum during Brachytherapy of the Cervix Using Gafchromic Films

2017 ◽  
pp. 651-659
Author(s):  
J. Avevor ◽  
S. N. A Tagoe ◽  
J. H. Amuasi ◽  
J. J. Fletcher ◽  
I. Shirazu
Keyword(s):  
Treatment Planning ◽  
Maximum Dose ◽  
Dose Assessment ◽  
Planning System ◽  
Treatment Planning System ◽  
In Vivo Dosimetry ◽  
Intracavitary Brachytherapy ◽  
Gafchromic Films ◽  
System Verification ◽  
The Mean

Internal radiation therapy, refers to as brachytherapy, involve putting a source of radiation with high photon in or near a cancerous tissues. The type of brachytherapy used most often to treat cervical cancer is known as intracavitary brachytherapy. Unfortunately however, the radiation source placed in the cervix irradiate the normal tissues of rectum and other nearby organs during intracavitary brachytherapy of the cervix treatment. This high doses received by parts of the rectum is a concern for clinicians and the general public. The aim of this study is to assess the dose delivered to the rectum using Gafchromic films and compare it with the optimized dose calculated by the Brachy Prowess 4.60 Treatment Planning System (TPS) reports for empirical validation and system verification. Fletcher suite applicators were used to perform thirty (30) different clinical insertions on the constructed cervix phantom and results evaluated. The mean difference between the doses calculated by the TPS and the doses measured by the Gafchromic film for the rectum at the distance of 0.5cm from the edges of the film was 23.1% (range -42.42 to +40.41). At a distance of 1.5cm for the rectum the mean was 22.5% (range -49.45 to +46.48). The TPS calculated maximum dose was typically higher than the measured maximum dose. However, in some cases, the measured doses were found to be higher than the doses calculated by the TPS. This is due to positional inaccuracies of the sources during treatment planning. It is recommended that in vivo dosimetry should be performed in addition to computation.

Comparison of an in-house developed monitor unit double-check program for 3D conformal radiation therapy and treatment planning system verification

2019 ◽  
Vol 18 (03) ◽  
pp. 251-261
Author(s):  
Noureddine Slassi ◽  
Hmad Ouabi ◽  
Naïma El Khayati
Keyword(s):  
Radiation Therapy ◽  
Treatment Planning ◽  
Accurate Determination ◽  
Planning System ◽  
Treatment Planning System ◽  
Monitor Unit ◽  
Conformal Radiation Therapy ◽  
Water Phantom ◽  
3D Conformal Radiation Therapy ◽  
System Verification

AbstractAimThe treatment planning system (TPS) plays a key role in radiotherapy treatments; it is responsible for the accurate determination of the monitor unit (MU) needed to be delivered to treat a patient with cancer. The main goal of radiotherapy is to sterilise the tumour; however, any imprecise dose delivered could lead to deadly consequences. The TPS has a quality assurance tool, an independent program to double check the MU, evaluate patient plan correctness and search for any potential error.Materials and methodsIn this work, a comparison was carried out between a MU calculated by TPS and an independent in-house-developed monitor unit calculation program (MUCP). The program, written in Cplusplus (C++ Object-Oriented), requires a database of several measured quantities and uses a recently developed physically based method for field equivalence calculation. The ROOT CERN data analysis library has been used to establish fit functions, to extend MUCP use to a variety of photon beams. This study presents a new approach to checking MU correctness calculated by the TPS for a water-like tissue equivalent medium, using our MUCP, as the majority of previous studies on the MU independent checks were based on the Clarkson method. To evaluate each irradiated region, four calculation points corresponding to relative depths under the water phantom were tested for several symmetric, asymmetric, irregular symmetric and asymmetric field cases. A comparison of MU for each radiation fields from readings of the TPS and the MUCP was undertaken.ResultsA satisfactory agreement has been obtained and within the required standards (3%). Additional experimental measurements of dose deposited in a water phantom showed a deviation of <1·6%.FindingsThe MUCP is a useful tool for basic and complex MU verification for 3D conformal radiation therapy plans.

Reinforcing of QA/QC programs in radiotherapy departments in Croatia: Results of treatment planning system verification

2013 ◽  
Vol 38 (1) ◽  
pp. 100-104 ◽  
Author(s):  
Slaven Jurković ◽  
Manda Švabić ◽  
Ana Diklić ◽  
Đeni Smilović Radojčić ◽  
Dea Dundara ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Planning System ◽  
Treatment Planning System ◽  
Results Of Treatment ◽  
System Verification

scholarly journals EP-1787 Commissioning of the RayStation treatment planning system in a multi-vendor context

2019 ◽  
Vol 133 ◽  
pp. S967
Author(s):  
A. Savini ◽  
F. Rosica ◽  
V. D'Errico ◽  
T. Licciardello ◽  
E. Menghi ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Planning System ◽  
Treatment Planning System
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