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Table 4 The internal verification of CT-free SPECT versus SPECT/CT (n = 36)

From: CT-free quantitative SPECT for automatic evaluation of %thyroid uptake based on deep-learning

Metric

Thyroid segmentation

Thyroid-specific SPECT counts

DSCc

VDd (mL)

95% HDe (mm)

R2

MSEf (× 10−4)

%NMAEg

Mean

0.756

1.371

12.063

0.963

0.061

0.002

STDa

0.072

8.732

6.445

0.026

0.115

0.001

SERb

0.012

1.455

1.074

0.004

0.019

0.000

  1. aStandard deviation
  2. bStandard error
  3. cDice similarity coefficient
  4. dVolume difference
  5. eHausdorff distance
  6. fMean square error
  7. gNormalized mean absolute error