When the selected tube voltage is 80 kilovoltage peak (kVp), the actual kVp must be accurate within a range of which of the following?

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Prepare for the Clover Learning Radiography exam. Master image evaluation and quality control with questions and detailed explanations. Enhance your skills and be exam ready!

Multiple Choice

When the selected tube voltage is 80 kilovoltage peak (kVp), the actual kVp must be accurate within a range of which of the following?

Explanation:
Maintaining accurate tube voltage is essential because kVp influences image contrast and penetration. QC standards set a tolerance for how far the actual kVp can deviate from the indicated value. This tolerance is typically about ±5% of the indicated kVp. For 80 kVp, ±5% equals ±4 kVp, so the acceptable range is 76–84 kVp. The other options are either too strict or too lenient compared with standard acceptance criteria. Therefore, the proper tolerance is ±4.0 kVp.

Maintaining accurate tube voltage is essential because kVp influences image contrast and penetration. QC standards set a tolerance for how far the actual kVp can deviate from the indicated value. This tolerance is typically about ±5% of the indicated kVp. For 80 kVp, ±5% equals ±4 kVp, so the acceptable range is 76–84 kVp. The other options are either too strict or too lenient compared with standard acceptance criteria. Therefore, the proper tolerance is ±4.0 kVp.

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