Precision Small Parts Grey Scale Phantom As one of the new generation of grey scale phantoms, the Precision Small Parts Grey Scale Phantom Gammex 404GS LE provides new advanced technology for measuring image quality of small parts and intracavity ultrasound scanning systems. With added grey scale targets this small parts phantom also measures contrast, temporal resolution and system linearity. The Gammex 404 LE has the same general target layout and specifications as the 404GS LE but does not include grey scale targets.

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