An Adaptive Thresholding Method for BTV Estimation Incorporating PET Reconstruction Parameters: A Multicenter Study of the Robustness and the Reliability

Figure 4

Application of the proposed method to a head and neck tumor: CT (a), MR (b), and PET (c) images (acquired on the biograph Hi-REZ PET scanner). The green ROI corresponds to the GTV delineation manually performed by the radiation oncologist, while the blue one is the result of the application of the 39% TS derived from the thresholding algorithm (TBR = 12, FWHM = 4 mm). The differences between manual GTV and GTV obtained from the thresholding algorithm is 4.3%.

(a)

(b)

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