EJNMMI Research

Table 2 Celesteion: major PET technical characteristics

From: Initial evaluation of the Celesteion large-bore PET/CT scanner in accordance with the NEMA NU2-2012 standard and the Japanese guideline for oncology FDG PET/CT data acquisition protocol version 2.0

Detector ring diameter (cm)	90.7
Detector material	LYSO
No. of individual crystals	30,720
No. of crystals/ring	640
No. of detector rings	48
No. of image planes	96
Crystal size (mm²)	4 × 4
Face of crystal block (mm²)	196 × 65
Crystals per block	48 × 16
No. of PMTs	480
No. of detector modules	40
Patient port diameter (cm)	88
Axial field of view (cm)	19.6
Transaxial field of view (cm)	70
Axial sampling interval (mm)	2
Coincidence window width (ns)	1.6–3.2
Energy window (keV)	425–650
External pin source	⁶⁸Ge (185 MBq)

PMT photomultiplier tube

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