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CT Scanner Daily QA Procedures

By MedBazaar Technical Team · Troubleshooting Guide

CT Scanner Daily QA — Standard Protocol

### مقصد / Purpose

Daily QA ensure karta hai ke CT scanner safe, accurate aur consistent performance de raha hai har patient ke liye.

### ضروری Equipment

  • CT QA phantom (water phantom ya ACR phantom)
  • QA logbook
  • Dosimetry equipment (agar available)

    • ### روزانہ کام / Daily Tasks

    1. Startup aur Warm-up (15-20 minutes)

  • System startup complete hone do
  • Tube warm-up protocol run karein
  • Air calibration successful complete ho

    • 2. Image Quality Check

  • Water phantom scan karein (standard protocol)
  • CT numbers check karein: Water = 0 HU (±5 HU acceptable)
  • Air = -1000 HU (±5 HU)
  • Noise level check karein
  • Uniformity check karein

    • 3. Table Accuracy

  • Table increment accuracy test karein
  • Laser alignment verify karein

    • 4. Documentation

  • QA results logbook mein record karein
  • Any deviations note karein
  • Signature karein

    • ### Acceptance Criteria

  • CT# water: 0 ±5 HU
  • Noise: < 5 HU SD (typical)
  • Uniformity: < 5 HU center vs periphery difference

    • ### Failed QA

    Agar QA fail ho to: scanning hold karein, physicist/engineer notify karein, investigation complete hone tak scan nahi karein.

    Difficulty: Intermediate

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