Direction and Status of Scientific Research at the Prometheus Proton Therapy Complex

Belikhin, M. A.; Pryanichnikov, A. A.; Shemyakov, A. E.; Zhogolev, P. B.; Zavestovskaya, I. N.; Chernyaev, A. P.

doi:10.1134/s1063778823110054

Phys. Atom. Nuclei

2023

DOI: 10.1134/s1063778823110054

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Direction and Status of Scientific Research at the Prometheus Proton Therapy Complex

M. A. Belikhin,

A. A. Pryanichnikov,

A. E. Shemyakov

et al.

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2024

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Cited by 1 publication

References 26 publications

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Interplay Effect in Spot-Scanning Proton Therapy with Rescanning, Breath Holding, and Gating: A Phantom Study

Belikhin,

Shemyakov,

Ivanov

et al. 2024

Applied Sciences

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The interplay effect is a challenge when using proton scanning beams for the treatment of thoracic and abdominal cancers. The aim of this study was to evaluate the facility-specific interplay effect in terms of dose distortion and irradiation time for different beam delivery modalities, including free breathing (FB) irradiation, rescanning, deep inspiration breath-hold (DIBH), and respiratory gating. This study was carried out at a synchrotron-based facility with spot-scanning beam delivery. A motion phantom with a radiochromic film was used to measure dose distributions. Regular and irregular motion patterns were studied. Dose homogeneity and the gamma index were calculated to quantify the interplay effect. The interplay effect significantly decreased the homogeneity and gamma passing rate by 12% and 46%, respectively, when FB irradiation without motion mitigation was used for 20 mm peak-to-peak motion. Rescanning and DIBH partially mitigated the distortions but doubled the irradiation time, while gating provided the superior dose distribution with only a 25% increase in time compared to FB irradiation without mitigation. The interplay effect was a function of motion amplitude and varied with the beam delivery modality. Gating may be a more preferable technique for the synchrotron-based facility in terms of minimizing dose distortion and treatment time.

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Interplay Effect in Spot-Scanning Proton Therapy with Rescanning, Breath Holding, and Gating: A Phantom Study

Belikhin,

Shemyakov,

Ivanov

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

show abstract

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Direction and Status of Scientific Research at the Prometheus Proton Therapy Complex

Cited by 1 publication

References 26 publications

Interplay Effect in Spot-Scanning Proton Therapy with Rescanning, Breath Holding, and Gating: A Phantom Study

Interplay Effect in Spot-Scanning Proton Therapy with Rescanning, Breath Holding, and Gating: A Phantom Study

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