Special Use Projection Terms

Axial Projection

Longitudinal angulation of the CR with the long axis of the body or a body part, angled cephalad or caudad.

Inferosuperior Axial Projection

CR enters inferiorly and exits superiorly (used for shoulder and hip). Lawrence Method

Superoinferior Axial Projection

CR enters superiorly and exits inferiorly.

Tangential Projection

CR skims a curved body surface to profile a structure free of superimposition.

AP Axial Projection—Lordotic Position

AP chest projection for lung apices

Transthoracic Lateral Projection

Lateral thoracic projection

Dorsoplantar Projection

CR travels from dorsal (anterior) to plantar (posterior) foot surface.

Plantodorsal Projection

CR enters plantar surface and exits dorsal surface (e.g., calcaneus view).

Parietoacanthial Projection

CR enters parietal bone and exits at acanthion (PA Waters method).

Acanthioparietal Projection

CR enters acanthion and exits parietal bone (AP reverse Waters method).

Submentovertical (SMV) Projection

CR enters below chin (mentum) and exits vertex of skull.

Verticosubmental (VSM) Projection

CR enters at skull vertex and exits below mandible.