Oncologic Radiology Glossary
100 terms total — 4 showing — Last updated 15 Sep 2026
RTOG criteria RTOG
Radiation Therapy Oncology Group grading system for radiation-induced normal tissue toxicity and late effects.
VMAT
Volumetric Modulated Arc Therapy, an advanced radiation delivery technique using rotating treatment beams with continuou...
voxel
A three-dimensional pixel representing the smallest unit of volume in digital imaging, containing specific density or in...
washout kinetics
The pattern and rate at which contrast material clears from tissues over time on dynamic imaging studies.
washout pattern
A contrast enhancement pattern showing rapid uptake followed by quick contrast elimination, often indicating malignancy...