In a lateral coccyx radiograph, the central ray is directed to which location relative to the ASIS?

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Study for the Clover Learning Radiography Positioning Test. Boost your skills with detailed questions, hints, and explanations. Master your radiography exam!

Multiple Choice

In a lateral coccyx radiograph, the central ray is directed to which location relative to the ASIS?

In this lateral coccyx projection, you center the beam to a point that lies behind and below the ASIS, so the coccyx sits directly in the image. The correct target is about 3.5 inches posterior to the ASIS and 2 inches inferior to the ASIS. This positioning accounts for the coccyx’s true location in the sagittal plane (posterior to the ASIS) and its vertical position relative to the ASIS, allowing the coccyx to be imaged without being overlapped by other structures and with proper magnification. If the CR were aimed more anterior or at a different vertical level, the coccyx could be off-center or obscured by surrounding anatomy, leading to an unsatisfactory image.

In a lateral coccyx radiograph, the central ray is directed to which location relative to the ASIS?

Study for the Clover Learning Radiography Positioning Test. Boost your skills with detailed questions, hints, and explanations. Master your radiography exam!

In a lateral coccyx radiograph, the central ray is directed to which location relative to the ASIS?

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