Question

How does the use of rare earth intensifying screens contribute to lowering the patient dose ?

1. It permits the use of lower milliampere-seconds

2. It permits the use of lower kilovolts peak (kVp)

3. It eliminates the need for patient shielding

Answer 1

Rare earth intensifying screens contribute to lowering the patient dose by permitting the use of lower mA-s and kVp, and eliminating the need for patient shielding.

Step-by-step explanation:

Rare earth intensifying screens contribute to lowering the patient dose in three ways:

1. They permit the use of lower milliampere-seconds (mA-s), which is the product of the milliamperage (mA) and the exposure time in seconds (s).
2. They permit the use of lower kilovolts peak (kVp), which is the peak voltage used to accelerate the electrons in the X-ray tube.
3. They eliminate the need for patient shielding, as the screens themselves absorb the X-ray radiation and reduce its penetration.

By using rare earth intensifying screens, healthcare providers can reduce the X-ray exposure dose to patients without compromising the quality of the diagnostic images.