Clinical Report: Investigation of Thermo-Optical Surface Monitoring in DIBH Radiotherapy
Overview
This study evaluates the effectiveness of thermo-optical surface monitoring combined with X-ray guidance in ensuring setup accuracy and monitoring intra-fraction motion during DIBH radiotherapy for breast cancer.
Background
Breast cancer is the most prevalent malignancy among women, making effective treatment strategies essential. Radiotherapy, particularly using the DIBH technique, has been shown to minimize radiation exposure to critical organs.
Data Highlights
Measurement
Value
Mean setup errors (all dimensions)
Not significantly different from zero (P>0.05)
PTV margins (lateral)
5.10 mm
PTV margins (longitudinal)
5.22 mm
PTV margins (vertical)
5.78 mm
Key Findings
Thermo-optical surface monitoring combined with X-ray guidance provides comparable setup accuracy to CBCT.
Mean setup errors were not significantly different from zero after X-ray correction.
Treatment duration did not significantly impact intra-fraction deviations.
Surface monitoring effectively detected mid-treatment drift, which was corrected by X-ray guidance.
The radiation dose from X-ray imaging was lower than that from CBCT.
Clinical Implications
The findings indicate the use of thermo-optical surface monitoring with X-ray guidance in DIBH radiotherapy for breast cancer patients.
Conclusion
The study supports the use of ExacTrac Dynamic in DIBH radiotherapy.
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