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Table 3 The CT and nominal local deposition methods were compared between their respective calibrations for both the liver and lungs. These comparisons were performed on their mean doses and within the same mass density method. The calibration column represents the x-axis of the linear regression where the bold represents a regression slope between the same calibrated data

From: Standardizing SPECT/CT dosimetry following radioembolization with yttrium-90 microspheres

Region

Calibration

Linear regression slopes

FOV

Body

OAR

Liverlung

Liver

CT

Nominal

CT

Nominal

CT

Nominal

CT

Nominal

CT

Nominal

Liver

FOV

1.000

1.000

1.081

1.088

2.239

2.254

2.361

2.374

2.712

2.729

Body

0.923

0.916

1.000

1.000

2.069

2.067

2.180

2.173

2.502

2.498

OAR

0.446

0.443

0.482

0.483

1.000

1.000

1.054

1.051

1.210

1.209

Liverlung

0.423

0.421

0.457

0.459

0.948

0.951

1.000

1.000

1.149

1.151

Liver

0.361

0.366

0.398

0.398

0.823

0.825

0.870

0.869

1.000

1.000

Lung

FOV

1.000

1.000

1.100

1.069

2.275

2.210

2.382

2.329

X

X

Body

0.907

0.933

1.000

1.000

2.065

2.063

2.162

2.170

X

X

OAR

0.439

0.451

0.483

0.483

1.000

1.000

1.046

1.053

X

X

Liverlung

0.419

0.428

0.462

0.457

0.955

0.949

1.000

1.000

X

X