Fig. 4
From: Photoacoustic imaging for monitoring radiotherapy treatment response in head and neck tumors
Digital twin analysis reveals a strong link between oxygen saturation (\(\text {sO}_2\)) prediction error (y-axis) and low blood volume fraction (x-axis) for benign, intermediate, and malignant lymph nodes. Every cross represents the mean absolute \(\text {sO}_2\) error of one digital twin scan with the \(\text {sO}_2\) ground truth defined by the assigned optical input properties.
