Radiotherapy treatment planning using the ACTA-scanner

Area of Science:

• Medical Imaging
• Radiation Oncology
• Radiotherapy Planning

Background:

• Accurate patient contouring and internal structure visualization are crucial for effective radiotherapy.
• Understanding tumor extent and surrounding tissues is essential for precise radiation delivery.
• Accounting for tissue heterogeneity is a significant challenge in radiation dose calculations.

Purpose of the Study:

• To elucidate the multifaceted utility of computerized tomography (CT) in optimizing radiotherapy treatment planning.
• To highlight CT's role in improving the accuracy of patient imaging and dose distribution calculations.
• To explore CT-based methods for addressing tissue heterogeneity in radiation oncology.

Main Methods:

• Utilizing CT imaging for precise patient contour definition and anatomical visualization.
• Employing CT data to accurately delineate tumor volumes and assess their extension.
• Investigating methods for tissue heterogeneity correction, including density assignment and direct scanning.
• Leveraging computer programming to calculate dose summations from multiple radiation fields.

Main Results:

• CT provides superior accuracy in defining patient external contours and internal anatomical relationships.
• CT enables precise demonstration of tumor and its spatial extension within the patient.
• CT facilitates corrections for tissue density variations, enhancing dose calculation accuracy.
• Computerized summation of doses from multiple fields is achievable with CT data.

Conclusions:

• Computerized tomography is an indispensable tool in modern radiotherapy treatment planning.
• CT significantly improves the accuracy of patient imaging, tumor delineation, and dose calculations.
• CT-based corrections for tissue heterogeneity and multi-field dose summation enhance treatment precision and efficacy.