American Registry of Radiologic Technologists (ARRT) Practice Exam

Question: 1 / 400

To optimize diagnostic imaging while protecting patients, a combination of which two factors is essential?

High mAs and Low kVp

Low mAs and High kVp

The combination of low mAs and high kVp is essential for optimizing diagnostic imaging while protecting patients. Using low mAs reduces the amount of radiation that the patient receives during the imaging procedure. This is crucial as it minimizes the exposure, thereby protecting the patient from potential radiation-related risks.

On the other hand, employing high kVp improves the penetrating power of the x-ray beam. This allows for better visualization of anatomical structures, particularly in thicker body parts, while still maintaining image quality. High kVp results in less scatter radiation, which enhances image contrast and detail.

This combination effectively balances the need for sufficient image quality—crucial for accurate diagnosis—while keeping patient radiation exposure to a minimum. Thus, low mAs and high kVp work synergistically to achieve optimal imaging outcomes safely.

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High mAs and High kVp

Low mAs and Low kVp

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