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 Image Evaluation and Quality Control Test with targeted quizzes and explanations. Master the skills needed to succeed in radiography and ensure quality control with our dynamic study materials.

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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