[12,13] Clues that one may be dealing with a button battery rather than a coin may be found on the lateral film
, where one side of the battery is perfectly flat while the other is convex,  and one may see the 'step-off' sign, which refers to the 'step' between the battery and its casing.
The alignment of the vertebrae on the lateral film
Consequently, DIFF has focused its energies on lateral film
development and distribution initiatives with other film organizations around the region.
The axillary lateral film
provides a good view of the humeral head sitting in the glenoid fossa.
If no arm injury is present, traction of the arms may help to demonstrate all 7 vertebrae on the lateral film
. If all 7 vertebrae and the C7-T1 junction are still not visible, a swimmer's lateral, taken with 1 arm extended over the head, may remedy the problem.
The lateral film
was analyzed by a radiologist whose professional experience was essential for the task of accurately aging the skull through dental development (Haavikko 1970, 1974, and 1985).
Always look on the lateral film
, where they are usually more obvious.
While the radiographer exposed the lateral film
with his left hand on the control panel, he held the exposed PA film in his right hand.
The lateral film
revealed the object in question -- a tongue pierced with a bar and 2 round attachments on both ends.
If a straight line (Line A) is drawn on the lateral film
connecting the bodies of the upper lumbar vertebrae, a goniometer can be used to measure the angle that a second line bisecting the disc space (Line B) forms with Line A.
In the differential diagnosis, the presence of a visible "thumb sign" on the lateral film
is considered the positive indicator of AE.
Interestingly, the lateral film
revealed a series of graduated-scale effects similar to a step wedge pattern or pentrometer used during during quality control procedures.