Physics and Radiobiology of Nuclear Medicine

Scintillation Detectors 83

T
able

8.1. Characteristics of different solid scintillation detectors.*

Effective atomic

Density

Scintillation

Photon yield

Linear atten. coeff

Energy resolution

Detectors

no (Z)

(g/cm

3 )

decay time (ns)

(per keV)

(cm

−^1 ) of 511 keV

(% at 511 keV)

NaI(Tl)

51

3.67

250

38

0.34

†

10

BGO

74

7.13

300

6

0.92

20

BaF

2

54

4.89

0.6

2

0.44

11.4

GSO

59

6.71

60

10

0.70

8.5

Anthracene

—

—

26

30

—

—

LSO

66

7.40

40

29

0.87

10

YSO

34

4.53

70

46

0.39

12.5

CsI(Tl)

‡

54

4.51

1000

52

0.48

§

—

* BGO, bismuth germanate; BaF

, barium fluoride; LSO, lutetium oxyorthosilicate; YSO, yttrium oxyorthosilicate; GSO, gadolinium oxyorthosilicate. 2

†

The linear attenuation coefficient of 140 keV photons of

99m

Tc in NaI(Tl) is 0.155 cm

−^1.

‡

Early P, Private communication, 2005.

§

Of 660 keV.