Patient-specific determinants of lens dose in sinonasal carcinoma radiotherapy: role of age, sex and gaze direction.
- 1Department of Physics, X-ray Research Laboratory, Nagpur University Campus, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, India.
- 2Department of Radiation Oncology, Max Super Speciality Hospital Nagpur, Nagpur, India.
- 3Department of Radiation Oncology, Medica Super Speciality Hospital, Kolkata, India.
Abstract
This study aimed to analyse the influence of age, sex, and gaze direction on lens dosimetric parameters during sinonasal carcinoma radiotherapy. A total of 1036 lenses from 518 CBCT image series of 24 patients were analysed. Patients were stratified into four age groups, and further grouped into younger vs. older and male vs. female categories. Lens movement amplitude and corresponding dosimetric parameters were assessed across different gaze directions. Average and maximum amplitudes of movement, along with corresponding dosimetric parameters, were quantified. Lens movement was significantly affected by gaze direction, with the largest displacement (0.96 ± 0.62 mm) observed in the caudal direction. Lens displacement resulted in an average increase of 2.84% ± 6.42% (range: -7.45% to 18.18%) in mean dose and 2.87% ± 8.00% (range: -17.21% to 31.42%) in maximum dose. Dose parameters at extreme gaze positions were significantly higher compared with the average lens position. No significant differences were observed between male and female groups. However, age was significantly correlated with lens dose parameters but not with displacement across gaze directions. Lens dose parameters were significantly influenced by age and gaze direction, but not by sex. Lens movement during routine treatment sessions was less pronounced than previously reported, suggesting that earlier studies may have overestimated lens dose. Incorporating patient-specific factors, particularly age and gaze direction, may help avoid excessive doses and mitigate the risk of radiation-induced cataract in sinonasal carcinoma radiotherapy.
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BibTeX
@article{meshram2026patientspecific,
title = {{Patient-specific determinants of lens dose in sinonasal carcinoma radiotherapy: role of age, sex and gaze direction.}},
author = {Mukesh Nanduji Meshram and Shizan Pervez and Srimanta Pramanik and Umesh A Palikundwar},
journal = {Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology},
year = {2026},
month = nov,
doi = {10.5603/rpor.113322},
url = {https://europepmc.org/article/MED/42997870},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - Patient-specific determinants of lens dose in sinonasal carcinoma radiotherapy: role of age, sex and gaze direction.
AU - Mukesh Nanduji Meshram
AU - Shizan Pervez
AU - Srimanta Pramanik
AU - Umesh A Palikundwar
PY - 2026
DA - 2026/11/01
JO - Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology
DO - 10.5603/rpor.113322
UR - https://europepmc.org/article/MED/42997870
AB - This study aimed to analyse the influence of age, sex, and gaze direction on lens dosimetric parameters during sinonasal carcinoma radiotherapy. A total of 1036 lenses from 518 CBCT image series of 24 patients were analysed. Patients were stratified into four age groups, and further grouped into younger vs. older and male vs. female categories. Lens movement amplitude and corresponding dosimetric parameters were assessed across different gaze directions. Average and maximum amplitudes of movement, along with corresponding dosimetric parameters, were quantified. Lens movement was significantly affected by gaze direction, with the largest displacement (0.96 ± 0.62 mm) observed in the caudal direction. Lens displacement resulted in an average increase of 2.84% ± 6.42% (range: -7.45% to 18.18%) in mean dose and 2.87% ± 8.00% (range: -17.21% to 31.42%) in maximum dose. Dose parameters at extreme gaze positions were significantly higher compared with the average lens position. No significant differences were observed between male and female groups. However, age was significantly correlated with lens dose parameters but not with displacement across gaze directions. Lens dose parameters were significantly influenced by age and gaze direction, but not by sex. Lens movement during routine treatment sessions was less pronounced than previously reported, suggesting that earlier studies may have overestimated lens dose. Incorporating patient-specific factors, particularly age and gaze direction, may help avoid excessive doses and mitigate the risk of radiation-induced cataract in sinonasal carcinoma radiotherapy.
SN - 1507-1367
SN - 2083-4640
ER -