What Are The Radiation Protection In CT ?

Radiation protection in CT (computed tomography) refers to the measures and practices employed to minimize radiation exposure to patients and healthcare providers during CT imaging procedures. These protection strategies include:-

1) Radiation protection in CT should follow the ALARA (as low as reasonably achievable) concept.

2) Radiation protection of the CT patient should also encompass three general principles:
A. Strict clinical indication.
B. Protocol optimization.
C. Shielding.

3) Limiting CT examination to strict indications is the best way to reduce radiation exposure.

4) Scan lengths should be limited to the clinically indicated region(s).

5) Multiple phase acquisitions should be held at a Minimum.

6) An optimized protocol is one that acquires CT images with acceptable levels of noise at the lowest possible dose.

7) Lead shielding should be utilized during CT whenever clinically possible.

8) Shielding of radiosensitive tissues, such as the eye lenses, breasts, and gonads, is critical.

9) Shielding must be applied both above and below the patient, to account for the rotational nature of the exposure in CT.

10) In-plane bismuth shielding of particularly radiosensitive areas, such as the orbits, thyroid, and breast tissue, can substantially reduce the effective radiation dose.

11) Scatter radiation does occur in the immediate area surrounding the CT scanner.

12) Room shielding requirements must be evaluated by a qualified radiologic health physicist.

13) Consideration for shielding requirements should account for exam workload, scanner position, and construction of doors, windows, and so on.

14) When it is clinically necessary to have the patient accompanied by a guardian or family member during a CT procedure, or when other health personnel remain in the room during scanning, the guardian/ family member or health personnel must wear appropriate lead shielding.

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BOOK LINK :- Mosby’s Exam Review for Computed Tomography 3rd Edition