CT Imaging Findings after Stereotactic Radiotherapy for Liver Tumors

Figure 4

Three types of responses of surrounding liver parenchyma to stereotactic radiotherapy treatment of hepatocellular carcinoma lesions, as seen on delayed imaging: hyperdense halo (a), the most frequent response, followed by isodense liver parenchyma (b), and hypodense halo (c). Arrows are pointing to the treated lesion and arrowheads to the response of the surrounding liver.

(a)

(b)

(c)