Radiation Oncology Glossary

Acute inflammatory lung reaction following thoracic radiation therapy, typically occurring 1-6 months post-treatment.

Mathematical framework predicting biological response to radiation dose and fractionation patterns.

Quantitative analysis of medical imaging features to extract predictive biomarkers for treatment outcomes.

Tissue death resulting from radiation damage, typically occurring months to years after treatment.

Systemic radiation treatment using radioactive drugs that target specific tissues or cell types. Includes therapies like...

Technique synchronizing radiation delivery with patient breathing patterns to reduce target motion.

Radiation Therapy Oncology Group, a clinical trials cooperative group that developed influential toxicity grading scales...

Source-to-Axis Distance, the fixed distance from the radiation source to the machine's isocenter, typically 100 cm for l...

Highly precise radiation technique delivering large doses in few fractions to small, well-defined targets.

Radiation dose received by tissues outside the primary beam due to photon scattering within the patient and treatment he...

The systematic or random deviation between the planned patient position and actual treatment position during radiation d...

Planning procedure using CT imaging to determine patient positioning and beam arrangements for radiation therapy.

IMRT delivery method using continuously moving MLC leaves while the beam is on.

Highly precise radiation delivery technique using multiple convergent beams to treat small targets in single or few frac...

Tumor Control Probability - mathematical model predicting likelihood of local tumor eradication.

Experimental radiation therapy using thermal neutrons to treat certain malignancies. Requires specialized nuclear reacto...

Dosimetric parameter comparing radiation dose in tissue at depth to dose in air at the same point, used in dose calculat...

Dosimetric parameter comparing radiation dose in tissue to dose in a reference phantom condition.

Thermoluminescent Dosimeter, a radiation detection device used for personal monitoring and in-vivo dose verification dur...

Maximum radiation dose that normal tissues can receive with an acceptable risk of complications.

Radiation treatment technique delivering uniform dose to the entire body, typically used in bone marrow transplant condi...

Specialized computer software used to design and optimize radiation therapy treatments.

Final documentation detailing completed radiation therapy course including doses delivered and patient response.

The process of confirming accurate patient positioning and treatment delivery through imaging or measurement techniques.