d. Procedure.
(1)
The urologist irrigates the urinary bladder.
(2)
A preliminary film (or films) of the urogenital tract is exposed as ordered.
(3) The patient is placed on the x-ray table in the posterior-oblique position
with the body rotated 35 to 40, either to the right. For male patients, the penis is
extended along the medial aspect of the thigh nearest the film. The region of the
symphysis pubis is centered to the midline of the table. The knee nearest the table
surface is moderately flexed. The leg farthest from the table surface is extended and
moved slightly backwards. Sandbags are placed to secure and immobilize the position.
See figure 2-38.
Figure 2-38. The right posterior oblique position for urethrography.
(4) A 10 x 12-inch film is placed lengthwise in the Bucky tray with the mid-
length aligned at the level of the interior border of the symphysis pubis.
(5)
(6)
The CR is projected perpendicularly and directed to the center of the
film.
(7)
The urologist introduces a contrast medium (viscous solution) into the
urethra.
(8) Exposure is made at a signal from the urologist. Routine pelvic
technique factors are appropriate. Respiration is suspended during exposure.
MD0959
2-60