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Table 1 SUV recovery values for different sphere-to-background ratiosa

From: Evaluation of a Bayesian penalized likelihood reconstruction algorithm for low-count clinical 18F-FDG PET/CT

Sphere size (mm)

10-to-1 ratio

4-to-1 ratio

2-to-1 ratio

OSEM

OSEM + PSF

BPL 450

BPL 550

BPL 700

OSEM

OSEM + PSF

BPL 450

BPL 550

BPL 700

OSEM

OSEM + PSF

BPL 450

BPL 550

BPL 700

NEMAb

37

0.842

0.870

0.941

0.934

0.926

0.914

0.943

0.979

0.971

0.961

0.971

0.986

1.009

0.998

0.989

28

0.847

0.888

0.956

0.951

0.945

0.862

0.902

0.959

0.955

0.947

0.985

1.013

1.042

1.031

1.015

22

0.775

0.841

0.944

0.934

0.925

0.856

0.930

1.011

0.998

0.975

0.931

0.968

1.009

0.985

0.952

17

0.707

0.815

0.934

0.927

0.913

0.772

0.852

1.010

0.977

0.934

0.845

0.866

0.910

0.871

0.819

13

0.534

0.640

0.889

0.854

0.807

0.569

0.558

0.708

0.660

0.601

0.650

0.642

0.646

0.631

0.617

10

0.370

0.419

0.807

0.718

0.624

0.386

0.390

0.402

0.387

0.372

0.647

0.648

0.647

0.627

0.612

Microb

10

0.432

0.523

0.876

0.836

0.817

0.470

0.536

0.769

0.741

0.703

0.681

0.706

0.728

0.717

0.699

8

0.320

0.396

0.837

0.808

0.764

0.342

0.380

0.560

0.522

0.478

0.588

0.572

0.555

0.564

0.560

6

0.210

0.234

0.414

0.389

0.356

0.293

0.298

0.329

0.319

0.310

0.589

0.574

0.551

0.554

0.555

5

0.167

0.182

0.331

0.304

0.268

0.266

0.260

0.272

0.268

0.265

0.563

0.550

0.512

0.519

0.529

4

0.132

0.133

0.174

0.157

0.153

0.272

0.266

0.266

0.268

0.265

0.544

0.534

0.487

0.492

0.512

  1. aIf SUV recovery values are (almost) equal to background and thus invisible (in boldface)
  2. bIndicated are the type of phantom used, i.e., the NEMA or micro hollow sphere phantom