To demonstrate the interphalangeal joint spaces,how must the finger be positioned for the PA oblique and lateral projections?

Question

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For the PA oblique and lateral projections of the finger, the finger must be positioned parallel to the image receptor (IR) to accurately demonstrate the interphalangeal joint spaces. This positioning ensures that the X-ray beam passes through the joints in a manner that minimizes distortion and overlap of anatomical structures, providing a clear view of the joint spaces.

To Demonstrate the Interphalangeal Joint Spaces,how Must the Finger Be