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Table 2 Specifications of the used phantoms

From: Performance evaluation of fifth-generation ultra-high-resolution SPECT system with two stationary detectors and multi-pinhole imaging

Phantom type 850.500 850.100 850.350
Purpose Ultra-micro resolution phantom Ultra-high micro resolution phantom Ultra-high plus micro resolution phantom
Diameter of insert (mm) 24 12 12
Hight of insert (mm) 12 10 8
Diameter of hollow channels–range (mm) 0.220.50 0.350.75 0.701.50