Cumulative radiation effect. Part VII: computer calculations and applications in clinical practice

Area of Science:

• Radiation Oncology
• Medical Physics
• Computational Biology

Background:

• The Cumulative Radiation Effect (CRE) system quantifies sub-tolerance radiation damage in normal connective tissue.
• Previous methods for CRE evaluation (nomographic, tabular) can be time-consuming and complex for clinical radiotherapy.
• A unified scale assesses the biological effect of fractionated or continuous radiation therapy.

Purpose of the Study:

• To outline computer calculations and applications for the CRE system in clinical practice.
• To present computer techniques for evaluating CRE at a point and calculating CRE distributions.
• To demonstrate the clinical utility of computer-based CRE assessment.

Main Methods:

• Development of interactive computer programs for point CRE calculations.
• Implementation of a Fortran program for calculating CRE distributions in iso-effect treatment planning.
• Categorization of clinical radiotherapy problems into point CRE evaluation and CRE distribution calculation.

Main Results:

• Demonstration of computer program applications with numerous examples, including complex fractionation schedules.
• Presentation of techniques used at the Glasgow Institute of Radiotherapeutics for CRE problem-solving.
• Validation of computer-aided CRE assessment for diverse clinical scenarios.

Conclusions:

• Computerized CRE calculations offer an efficient alternative to traditional methods in clinical radiotherapy.
• The CRE system, enhanced by computational tools, has broad applications in routine treatment, surveys, and research.
• Optimized treatment schedules based on CRE calculations can improve cure rates while minimizing normal tissue damage.