When the source-to-image distance (SID) is 80 cm (31.5 inches), the actual SID should match the displayed SID within a range of

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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 source-to-image distance (SID) is 80 cm (31.5 inches), the actual SID should match the displayed SID within a range of

Explanation:
SID accuracy is governed by a tolerance expressed as a percentage of the indicated distance. In QA practice, the actual SID should fall within ±2% of the displayed SID. For an 80 cm SID, that translates to a range of 78.4 cm to 81.6 cm, i.e., a tolerance of ±1.6 cm. The other options represent different percentages (1%, 5%, 10%), which are not the standard tolerance. Maintaining this ±2% range helps ensure correct image magnification and geometric accuracy in radiographs.

SID accuracy is governed by a tolerance expressed as a percentage of the indicated distance. In QA practice, the actual SID should fall within ±2% of the displayed SID. For an 80 cm SID, that translates to a range of 78.4 cm to 81.6 cm, i.e., a tolerance of ±1.6 cm. The other options represent different percentages (1%, 5%, 10%), which are not the standard tolerance. Maintaining this ±2% range helps ensure correct image magnification and geometric accuracy in radiographs.

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