(8) In some instances, the radiologist will maneuver the patient through
various positions under the fluoroscope in order to determine the degree of body
angulation and the centering point of the CR for subsequent radiography. This may
entail marking the CR-centering site on the body with a skin-marking pencil or
measuring the patient on one side to determine the distance that the anterior superior
iliac spine (ASIS) should be elevated above the table top during the exposure or both.
The radiologist then conveys this information to the specialist, and the required
exposures are made.
d. Radiographic Examination. The specialist will expose the radiographs
according to clinical routine. At times, the radiologist may deviate from the established
routine, depending upon his fluoroscopic findings. Figures 2-6 through 2-10 show three
(1) Figures 2-6 and 2-7, PA stomach and the diagram, demonstrate the
structures of the stomach and the duodenum.
Anatomical. Stomach and portions of duodenum.
(b) Film. 14 x 17-inch film.
(c) Position. The patient is prone, with median plan perpendicular to
the center line of the table. Iliac crests are 5 inches below the center of the film, or as
indicated at the time of fluoroscopy. Nonopaque pads may be used under the chest
Central Ray. Align to center of the film.
Respiration. Suspended expiration.