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[Research on Individualized Phantom Based on 3D Printing for Radiotherapy Dose Verification]
Haitao Sun1, Jiyou Li1, Ning Wang1
1Department of Radiotherapy, Zhongshan Traditional Chinese Hospital, Zhongshan, 528400.
Summary
This study introduces a 3D-printed phantom for accurate radiation therapy dose verification. The individualized phantom effectively simulates patient anatomy, ensuring reliable treatment planning for intensity modulated radiation therapy.
Area of Science:
- Medical Physics
- Radiotherapy
- 3D Printing Technology
Background:
- Accurate dose verification is crucial for effective and safe intensity modulated radiation therapy (IMRT).
- Traditional phantoms may not fully replicate patient-specific anatomy, potentially limiting dose validation accuracy.
- Individualized phantoms offer a promising approach to enhance the precision of radiation dose verification.
Purpose of the Study:
- To develop and validate an individualized 3D-printed phantom for dose verification in IMRT.
- To assess the anatomical accuracy and radiation equivalence of the 3D-printed phantom compared to patient data.
- To establish a reliable method for pre-treatment dose validation using patient-specific phantoms.
Main Methods:
- Utilizing 3D printing technology to create patient-specific phantoms based on CT data and Mimics software reconstruction.
- Filling the 3D-printed shells with tissue-equivalent materials to match patient CT values.
- Performing CT scans of the phantom, transferring data to the Treatment Planning System (TPS), and verifying dose distribution.
- Comparing phantom and patient data for anatomical contour accuracy and radiation equivalence.
Main Results:
- The 3D-printed phantom accurately reconstructed patient-specific anatomical contours with minimal differences.
- CT imaging confirmed that the phantom's radiation equivalence closely matched actual patient tissues.
- The phantom demonstrated equivalent dose distribution within the conventional treatment range.
- The developed phantom provides a reliable means for dose verification in IMRT.
Conclusions:
- Individualized 3D-printed phantoms are effective for accurate dose verification in IMRT.
- This technology enhances the simulation of patient anatomy and surrounding tissues for precise treatment planning.
- The method offers a reliable approach to ensure radiation dose accuracy and patient safety in radiotherapy.
