MEDRADSC 2Z03 Lecture Notes - Lecture 12: Anatomical Plane, Coronal Plane, Transverse Plane
29 Jun 2016
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Let"s define the anatomical planes that are conventionally used in describing the direction of the image slice. As mentioned previously, in the mri scanner: the z-axis is aligned along the direction of the b0 field, the x-axis is horizontal across the magnet, and the y-axis is vertical. If the subject is lying on their back in the magnet, slices perpendicular to the z-axis or in the x-y plane are known as transverse, axial or trans-axial slices. Images in the plane perpendicular to the horizontal axis, in the y-z plane, are known as sagittal slices. Images in the x-z plane perpendicular to the y-axis are known as coronal or frontal slices. In general, the terms axial, sagittal and coronal refer to slices relative to the body, rather than relative to the magnet geometry. Examples of these planes are illustrated below, in figure 1, in relation to brain images.
