Figure 3.

MR data in 80-year-old woman with NELM. A, B, Pretreatment MR images show arterial enhancing lesion in coronal and axial plane, respectively, with, C, segmented three-dimensional tumor. D, E, MR images show posttreatment tumor in coronal and axial plane, respectively, with, F, segmented three-dimensional tumor. RECIST diameter decreased from 9.8 to 9.2 cm, and there was decrease in tumor volume after treatment from 374 to 298 cm³. This case was classified as stable disease according to RECIST. G, Volumetric ADC map demonstrates increase in volumetric ADC from 1.12 to 2.01 × 10⁻³ mm²/sec with 79.46% increase in ADC as depicted in the histogram (blue = pretreatment data, orange = posttreatment data). There is rightward shift in the blended histogram, representing increasing ADC after treatment and indicating favorable response to therapy. H, Volumetric enhancement characteristics in the same patient described in A. Volumetric enhancement map in arterial phase shows arterial enhancement decreased from 88% to 15% as depicted in the histogram (blue = pretreatment data, orange = posttreatment data). There is leftward shift in the blended histogram, representing decreasing enhancement after treatment and indicating favorable response to therapy. Mean percentage change was 27% for the ADC, −25.3% for the HAP, and -22.4% for the PVP.