Dose impact of rectal gas on prostatic IMRT and VMAT.
Purpose: In this study, we compared the dose impact of the heterogeneity caused by rectal gas using two methods of treatment planning for intensity-modulated radiotherapy (IMRT) and volumetric-modulated arc therapy (VMAT).Materials and Methods: In addition to the structure set used for the standard...
| Publicado en: | Japanese Journal of Radiology Vol. 33; no. 12; pp. 723 - 734 |
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| Autores principales: | , , , , , , |
| Formato: | diagnostic images research tables/charts Journal Article |
| Publicado: |
Springer Nature
Dec2015
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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=112064917&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 112064917 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 18671071 AUCM jtl: Japanese Journal of Radiology issn: 18671071 maglogo: N pubinfo: dt: Dec2015 vid: 33 iid: 12 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 112064917 112064917 NLM26573828 112064917 10.1007/s11604-015-0481-7 NLM26573828 112064917 ppf: 723 ppct: 11 formats: fmt: @attributes: type: P tig: atl: Dose impact of rectal gas on prostatic IMRT and VMAT. aug: au: Sasaki, Motoharu Ikushima, Hitoshi Tominaga, Masahide Kamomae, Takeshi Kishi, Taro Oita, Masataka Harada, Masafumi affil: Department of Therapeutic Radiology, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho Tokushima 770-8503 Japan sug: subj: Rectum Physiopathology Flatulence Physiopathology Radiotherapy, Conformal Methods Radiotherapy, Computer-Assisted Methods Prostatic Neoplasms Radiotherapy Tomography, X-Ray Computed Male Rectum Radiography Prostatic Neoplasms Physiopathology Imaging, Three-Dimensional Prostate Radiography Radiation Dosage Human Male ab: Purpose: In this study, we compared the dose impact of the heterogeneity caused by rectal gas using two methods of treatment planning for intensity-modulated radiotherapy (IMRT) and volumetric-modulated arc therapy (VMAT).Materials and Methods: In addition to the structure set used for the standard treatment plan, we created a structure set for evaluation for each patient. These sets were transferred to the same isocenter as the respective treatment plans for IMRT and VMAT that were to become the standard. Values were then recalculated.Results: During the standard prostatic IMRT and VMAT treatment planning, all study participants met dose restrictions in place at our hospital. Dose restrictions were fulfilled in treatment plans for evaluation, excluding those with a clinical target volume (CTV) of V(100%) and planning target volume (PTV) of D95 when the rectum was excluded. However, in treatment plans for evaluation, IMRT was shown to have a higher concordance rate with standard treatment plans than VMAT.Conclusion: If rectal gas is present during either IMRT or VMAT, a dose decrease will occur in relation to CTV and PTV, suggesting that a plan does not eliminate adverse effects on organs at risk. pubtype: Academic Journal doctype: diagnostic images research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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