Kettering American Registry of Radiologic Technologists (ARRT) Practice Exam

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What is an image produced with the central ray angled along the long axis of a part known as?

Axial

An image produced with the central ray angled along the long axis of the part is known as an axial image. This technique is commonly used in radiography to obtain views of structures in the body that align with their anatomical orientation, allowing for a more accurate representation of the anatomy being imaged. The axial view is particularly significant in procedures like CT scans, where images are taken in slices along the axis of the organ or structure of interest. By aligning the central ray with the long axis, radiologic technologists can minimize distortion and provide clearer visualization of the anatomy, which is essential for accurate diagnosis and treatment planning.

Other positioning methods, such as oblique or radial, involve different angles or orientations that do not align with the long axis, which can lead to different imaging criteria and outcomes.

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Oblique

Horizontal

Radial

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