Radiology Practice Test

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Prepare for the Radiology Test. Study with interactive flashcards and multiple-choice questions, each with detailed explanations and hints. Ace your exam with confidence!

Practice this question and more.

What is the embossed dot on an x-ray used for?

To indicate the exposure time
To help calibrate the machine
To align the x-ray head
To help determine left from right when mounting

The correct answer is: To help determine left from right when mounting

The embossed dot seen on an x-ray is called a "Lead Ball" and it is used to mark either the left or right side of the patient's body. This is important for proper positioning and alignment during x-rays. Options A, B, and C are incorrect as they do not pertain to the function of the embossed dot and are not related to patient positioning. Option A, indicating the exposure time, would typically be displayed on the x-ray machine or control panel. Option B, helping calibrate the machine, would not require a specific marking on the x-ray. And option C, aligning the x-ray head, would be done through other methods such as lasers or markings on the machine. Therefore, the correct answer is D as it is the only option that explains the purpose of the embossed dot.