Comparison of an in-house developed monitor unit double-check program for 3D conformal radiation therapy and treatment planning system verification.
Aim: The 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...
| Publicado en: | Journal of Radiotherapy in Practice Vol. 18; no. 3; pp. 251 - 262 |
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| Autores principales: | , , |
| Formato: | equations & formulas research tables/charts Journal Article |
| Publicado: |
Cambridge University Press
Sep2019
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=137799847&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 137799847 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14603969 8OJ jtl: Journal of Radiotherapy in Practice issn: 14603969 maglogo: N pubinfo: dt: Sep2019 vid: 18 iid: 3 pid: 15979 pub: Cambridge University Press artinfo: ui: 137799847 137799847 137799847 10.1017/S1460396918000742 137799847 ppf: 251 ppct: 11 formats: tig: atl: Comparison of an in-house developed monitor unit double-check program for 3D conformal radiation therapy and treatment planning system verification. aug: au: Slassi, Noureddine Ouabi, Hmad El Khayati, Naïma affil: Faculty of Science, Mohammed V University in Rabat, Ibn battouta OB 1014, Rabat, Morocco sug: subj: Neoplasms Radiotherapy Radiotherapy, Conformal Methods Software Radiation Dosage Dosimetry Methods Descriptive Statistics ab: Aim: The 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 methods: In 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. Results: A 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%. Findings: The MUCP is a useful tool for basic and complex MU verification for 3D conformal radiation therapy plans. pubtype: Academic Journal doctype: equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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