The Apparent Diffusion Coefficient (ADC) is a quantitative parameter derived from Diffusion-Weighted Imaging (DWI), a type of Magnetic Resonance Imaging (MRI). ADC values are used to measure the degree of water diffusion within tissues. In the context of cancer, ADC values help in assessing the cellular density of tumors and their microenvironment, which can be crucial for diagnosis, treatment planning, and monitoring response to therapy.
