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Table 1 Specifications of the used collimators

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

Collimator type XUHR-M GP-M UHS-M
Purpose Extra ultra-high resolution mouse imaging General purpose mouse imaging Ultra-high sensitivity mouse imaging
Pinhole size (mm) 0.25 0.60 1.00
Number of pinholes 75
Inner diameter (mm) 45
Centre field of view—length (mm) 7
Centre field of view—diameter (mm) 12