x-ray projection
51posteroanterior (PA) projection — a radiographic projection in which the central ray goes from the back to the front of the body, with the film at the front …
52Settegast projection — a tangential projection of the patellofemoral region, usually with the patient prone, the knee flexed more than 90 degrees, and the central ray directed vertically downward at the knee. Called also sunrise p …
53Stryker notch projection — a rare type of radiographic projection for evaluation of an unstable or repeatedly dislocating shoulder that may have a subtle condition such as the Hill Sachs lesion. The patient lies supine with the elbow on the affected side vertical and the… …
54submentovertex projection — a radiographic projection of the head with the central ray entering under the chin and directed toward the vertex …
55swimmer's projection — a radiographic projection of the cervical or thoracic spine with the patient lying supine on a table, the neck hyperextended, the upper limb nearer the camera parallel to the body, and that nearer the film placed above the head; the central ray… …
56tangential projection — a radiographic projection with the central ray on a tangent to an organ or part …
57tunnel projection — a posteroanterior projection in which the knee is flexed 40 to 50 degrees with the patient prone and the foot supported; the central ray is perpendicular to the lower leg for a view of the intercondylar fossa of the femur …
58verticosubmental projection — a radiographic projection in which the central ray passes from the vertex of the head to the base of the chin, for visualization of the mandible, the base of the skull, and the nasal region …
59Waters projection — a radiographic projection of the anterior head, used for viewing the maxillary sinuses and sphenoid bone; the central ray enters at an angle through the chin …
60West Point projection — a rare type of radiographic projection for evaluation of an unstable or repeatedly dislocating shoulder that may have a subtle condition such as the Hill Sachs lesion. The patient lies prone with the affected upper limb abducted and the forearm… …
