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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