Application of gemstone spectral imaging for efficacy evaluation in hepatocellular carcinoma after transarterial chemoembolization

Figure 7 Same case as in Figure 6. A: Placement of a region of interest in the primary lesion; B: Placement of a region of interest in the lesion in the right lobe; C: The spectral curves for the two lesions were roughly same, suggesting tumor homogeneity; D: Digital subtraction angiography confirmed multiple tumor stains (arrow).