This document provides the non‑annual CT quality‑assurance procedures for Philips Gemini G16/GXL/TF PET/CT scanners, covering visual inspection, water…
The procedure manual defines the purpose, recommended frequency, required equipment, test steps, performance criteria, and corrective actions for non‑annual quality assurance of the CT component of Philips Gemini PET/CT systems. It references both Philips‑provided phantoms and standard AAPM phantoms for testing.
Key sections include visual inspection of the scanner, water phantom CT number accuracy, slice positioning accuracy, radiation width assessment, dose index calculations, and overall system safety evaluation. The document also lists reference standards and literature used to establish baseline values. This manual is written in Chinese.
| PET/CT alignment translation error tolerance | ≤ 5 mm |
|---|---|
| Water phantom CT number accuracy | ± 7 HU |
No special equipment is needed; the visual inspection is performed by looking at the scanner components and indicators.
The translation error in the X, Y, and Z axes must be 5 mm or less.
A Philips‑provided water phantom is scanned under standard adult head conditions, and the average CT value in a 400 mm² ROI is measured; the result must be within ±7 HU of the reference.