Patent ID: 9533173
Date: 2017-01-03
CPC Classifications: A61B,A61N,G06T

Claim:
1. A radiotherapy apparatus, comprising: a tissue of interest tracker that receives a first image of tissue of interest and a second later acquired spectral image of the tissue of interest and tracks a change in a geometry and/or location of the tissue of interest based at least on the first and second images and generates a signal indicative of the change, wherein the second later acquired spectral image is generated based on a first spectral signal corresponding to an output of an energy-resolving radiation sensitive detector array of the radiotherapy apparatus for a first predetermined energy range and a second spectral signal corresponding to an output of the energy-resolving radiation sensitive detector array of the radiotherapy apparatus for a second predetermined energy range, wherein the second later acquired spectral image visually enhances scanned structure corresponding to the first or second signals while visually suppressing scanned structure corresponding to the other of the first or second signals; and an adaptive planner that updates a radiotherapy treatment plan based on the signal indicative of the change from the tissue of interest tracker.