There was no chance of missing rudimentary cervical ribs or misinterpreting elongated C7 transverse processes as rudimentary cervical ribs; as all cases with suspicious cervical ribs and enlarged C7 transverse processes were subjected to AP projection
of cervical spine which confirmed the presence of both entities in 100% cases.
One should always pass the lag screw in the inferior part of neck in AP projection
and centre in the lateral plane.
Caption: Figure 1: Chest radiograph in AP projection
showing elevation of both domes of diaphragm with interposition of colon between liver and right hemidiaphragm (Chilaiditi's sign).
There was no difference in the clinically significant rotation on AP projection
between the Statscan and CR images.
Place the patient's back against the cassette for the AP projection
. The patient should hug the ball against the chest with his or her chin on top of the ball and hands out of the primary beam.
Frontal views of all the bones and joints of the lower extremity are generally exposed in the AP projection
(front to back) (Figures 4, 5, and 6).
Demand an excellent open-mouth view on all your trauma series, where things are lined up in a true AP projection
so you can evaluate the base of the odontoid," Dr.
(1,2) The AP projection
also allows for visualization of the transverse processes, posterior ribs and the costovertebral joints.
For the erect AP projection
, rotate the patient's body into a slight 20 degrees to 25 degrees posterior oblique position.
Gonadal protection also should be used when imaging girls, with the exception of the very first AP projection
for the initial examination of the hips and pelvis.
The advantage is that an erect weight-bearing anteroposterior (AP) projection of the knee may show joint space narrowing, while a recumbent AP projection
of the same knee may not.
The use of a posteroanterior (PA) projection or an AP projection
can affect radiation dose.