Medical Equipment: Computed Tomography - Updated 2018 (Arabic Narration)

Introduction

This tutorial provides a comprehensive overview of Computed Tomography (CT) as covered in the updated 2018 lecture series designed for Biomedical Engineering students. The information is presented with practical insights and applications, making it relevant for students and professionals in the field.

Step 1: Understanding Computed Tomography

• Definition: Computed Tomography (CT) is a medical imaging technique that uses computer-processed combinations of many X-ray measurements taken from different angles to produce cross-sectional images of specific areas of a scanned object.
• Key Components:
  • X-ray Tube: Generates X-rays that penetrate the body.
  • Detector: Captures the X-rays after they pass through the body.
  • Computer System: Processes the data and constructs images.

Step 2: Learning about CT Scanning Process

• Preparation for Scanning:

  • Ensure the patient is informed about the procedure.
  • Remove any metal objects that may interfere with imaging.
  • Check for allergies, especially to contrast materials.

• Scanning Procedure:

  1. Position the patient on the CT table.
  2. Administer contrast material if required, either orally or intravenously.
  3. Start the scan, which typically lasts a few minutes.
  4. Ensure the patient remains still during the imaging for clear results.

Step 3: Analyzing CT Images

• Image Reconstruction:

  • The computer reconstructs the 2D images into a 3D representation.
  • Look for key indicators such as density differences to identify abnormalities.

• Common Applications:

  • Diagnosing tumors, internal injuries, or bleeding.
  • Planning and monitoring treatments for various conditions.

Step 4: Safety Considerations

• Radiation Exposure:

  • Discuss the amount of radiation used and its implications.
  • Ensure that CT scans are justified based on medical necessity.

• Patient Care:

  • Monitor patients with contrast allergies or kidney issues closely.

Conclusion

Computed Tomography is a vital tool in medical imaging, providing detailed insights into a patient's internal structures. Understanding its components, procedure, and safety considerations is crucial for Biomedical Engineering students and professionals. For further learning, consider downloading the presentation available at k-space.org and reviewing additional resources on advanced imaging techniques.