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EJNMMI Physics

Table 2 Statistics of the percentage difference between MR-based and CT-based AC for different correction approaches (excluding two lesions considered as outliers)

From: Quantitative performance of 124I PET/MR of neck lesions in thyroid cancer patients using 124I PET/CT as reference

Correction

Avg-AC

Max-AC

None

27% (26%) ± 21% (− 22 to 79%)

12% (15%) ± 18% (− 31 to 56%)

PGC scaling

18% (18%) ± 17% (− 23 to 60%)

11% (12%) ± 18% (− 33 to 51%)

Image harmonization

3% (1%) ± 19% (− 27 to 44%)

– 8% (− 10%) ± 16% (− 33 to 37%)

PGC scaling + image harmonization

– 4% (− 5%) ± 14% (− 28 to 29%)

– 9% (−11%) ± 14% (− 33 to 33%)

  1. Statistics included the mean, the median, the SD, the minimum, and the maximum, which are provided in the following form: mean (median) ± SD (minimum to maximum). None means without any corrections. PGC scaling refers to only application of scaling factors. Image harmonization refers to only corrections pertaining to image reconstruction parameters. PGC scaling + image harmonization means application of both corrections, PGC scaling and image harmonization
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