The effects of intestinal air cavity on dose distribution of volume modulated arc therapy for cervical cancer

Annals of Palliative Medicine, Год журнала: 2022, Номер 11(4), С. 1326 - 1335

Опубликована: Март 31, 2022

This study explored the effects of air cavity on dose distribution radiotherapy in patients after extensive hysterectomy. In who have an intestines near planning target volume (PTV), photon beams may interact with to cause electron disequilibrium (ED), resulting a reduction absorbed by surrounding tissues. this paper, density assignment (EDA) was used simulate disappearance intestinal gas, and modulated arc therapy (VMAT) results were examined.A total 21 underwent VMAT hysterectomy enrolled retrospective analysis. The parameters from selected treatment plan experimental reference. reference group copied, structure identified using computed tomography (CT) simulation image. value intestine measured averaged according recommended International Commission Radiological Units (ICRU) report No. 46. assigned structure. Subsequently, re-calculated without changing other parameters, defined as group. PTV organs at risk (OAR) 2 groups assessed, influence cervical cancer analyzed.The minimum (D98) maximum (D2) significantly different between control (P<0.05), however, mean comparable groups. OARs not two except bone structural organs.When is large related area, should be intervened, patient treated gas decreases.

Язык: Английский

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[P209] Determination of the relative dose distribution around an intrabeam electronic brachytherapy source using Fricke gel dosimetry

Physica Medica, Год журнала: 2018, Номер 52, С. 161 - 161

Опубликована: Авг. 1, 2018

Язык: Английский

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[P213] Influence of beam spoiler and air gap on dose distribution in build-up region for X6 MV static field

Physica Medica, Год журнала: 2018, Номер 52, С. 161 - 162

Опубликована: Авг. 1, 2018

Язык: Английский

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[P208] Geometric and dosimetric comparison of four intrafraction motion adaptation strategies for stereotactic liver radiotherapy

Physica Medica, Год журнала: 2018, Номер 52, С. 160 - 161

Опубликована: Авг. 1, 2018

Язык: Английский

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