A novel and clinically useful weight-optimized dynamic conformal arc in stereotactic radiation therapy of non-small cell lung cancer: Dosimetric comparison of treatment plans with volumetric‐modulated arc therapy

Saglam, Yucel; Selek, Uğur; Bölükbaşı, Yasemin

doi:10.1016/j.radphyschem.2022.110623

Cited by 2 publications

(1 citation statement)

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“…In addition, the decreased plan complexity leads to a reduction in the total number of monitor units (MUs) needed to deliver the same prescribed dose, thus reducing the treatment time accordingly. DCAT can also minimize the interplay effect between treatment machine parameters and moving tumors because its field shape encompasses the entire target volume at all beam angles 5 , 6 .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the deliverability of dynamic conformal arc therapy (DCAT) by gantry wobble and its influence on dose

Kim,

Jung

et al. 2024

Sci Rep

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We aimed to investigate the deliverability of dynamic conformal arc therapy (DCAT) by gantry wobble owing to the intrinsic inter-segment break of the Elekta linear accelerator (LINAC) and its adverse influence on the dose to the patient. The deliverability of DCAT was evaluated according to the plan parameters, which affect the gantry rotation speed and resultant positional inaccuracies; the deliverability according to the number of control points and dose rates was investigated by using treatment machine log files and dosimetry devices, respectively. A non-negligible degradation in DCAT deliverability due to gantry wobble was observed in both the treatment machine log files and dosimetry devices. The resulting dose-delivery error occurred below a certain number of control points or above a certain dose rate. Dose simulations in the patient domain showed a similar impact on deteriorated deliverability. For targets located primarily in the isocenter, the dose differences were negligible, whereas for organs at risk located mainly off-isocenter, the dose differences were significant up to − 8.77%. To ensure safe and accurate radiotherapy, optimal plan parameters should be selected, and gantry angle-specific validations should be conducted before treatment.

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Section: Introductionmentioning

confidence: 99%