ESTRO 2024 - Abstract Book

S5455

RTT - Patient care, preparation, immobilisation and IGRT verification protocols

ESTRO 2024

218

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Breathing Amplitude Variation for Lt. Breast Patient. Using SGRT Setup Following DIBH Technique.

Abid Ali Mirza aman, Nadeem Pervez, Amna Abdullah Al-ajmi

Sultan qaboos Comrehensive Cancer Care and Research centre, Radiotherapy, Muscat, Oman

Purpose/Objective:

This Study investigate Breathing Amplitude Variation on Radiotherapy workflow (On Pre-simulation Education, At CT- Simulation Day following till end of treatment) For Left Breast/Chest wall patient. Using Surface Guided Radiation Therapy Setup Following Deep Inspiration Breath Hold Technique.

Material/Methods:

A retrospective study examined 32 left breast/chest wall cancer patients in the Radiotherapy department. Patients were trained in Deep Inspiration Breath Hold (DIBH) before CT-SIM, with breathing amplitude monitored using SGRT Live Monitoring. PSE, CT-SIM, and on-treatment amplitudes were recorded from September 2022 to April 2023. Statistical analysis yielded amplitude ranges: PSE Education (0.63 cm to 1.51 cm), At CT-Sim (0.61 cm to 1.55 cm), and Daily RT (0.21 cm to 0.912 cm). The average standard deviation during RT was 0.409 cm, with a range of 0.06-0.63.

Results: