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Table 1 Comparison of real-time blood counters

From: A CZT-based blood counter for quantitative molecular imaging

 

Detector

Technical characteristics

 

Type

Sizea (mm)

Number

Shielding (mm), material

β +/γ

Sensitivity (18F) (cps/(kBq/ml))

MDA (18F) (kBq/ml)

Absolute efficiency (%)

Energy window

Time drift

Energy resolution

This work

CZT

20 × 20 × 15

1

30, W

γ

7.1

2.5

10.5% at 511 keV

110–1050 keV

<0.05% /h

8% at 662 keV

Eriksson et al. [5]

BGO/PMT

45 × 45 × 45

1

60, Pb

γ

25.5

0.37

350–650 keV

<1%

20%

Votaw and Shulman [6]

BGO/PMT

50 × 25 × 25

2

16, Pb

γ

7.3

6.9% at 511 keV

>350 keV

Boellaard et al. [7]

BGO/PMT

D = 60 L = 60

1

60, Pb

γ

23

30% of 511 keV

<3% /h

Kudomi et al. [9]

GSO/PMT

20 × 20 × 12.9

4

20, Pb

γ

>2.6

6.2% at 511 keV

>450 keV

11% at 511 keV

Twilite II (swisstrace)[28]

LYSO

2

γ

2.4

Laymon et al. [8]

BGO/PMT

D = 25 L = 25

2

γ

11 (15O)

19% at 511 keV

400–1360 keV

<0.6%

Breuer et al. [11]

LSO/APD

50 × 40 × 30

2

40, W

γ

18.5% at 511 keV

350–1000 keV

<1%

22% at 511 keV

Yamamoto et al. [10]

GSO/PMT

10 × 20 × 0.5

4

4, W

β +/γ

8.6% (18F)

>80 keV

18.5% at 511 keV

Convert et al. [12]

Si photodiode

30 × 3

1

<13, W

β +

23

7.1% (18F)

Convert et al. [13]

Si photodiode

16 × 2

1

β +

23–51

39% (18F)

Roehrbacher et al. [29]

LYSO/PMT

D = 25 L = 25

2

17, Pb

γ

3.7

6.5% (18F)

415–680 keV

23%

  1. D diameter, L length
  2. aFor cylindrincal detector