GUIDE WITH VERIFIED ANSWERS
● Pleural effusion - Demonstrates absence of diaphragm contour and
blunting of the costophrenic angle
● Pneumonitis is another name for - Pneumonia
● Pneumothorax - Air trapped in the pleural space increases external
pressure on affected lung
● Why is it important to position patient so that the heart demonstrates
minimal magnification? - Magnification of the heart could be mistaken
for pathological coronary condition
● What degree of tub angulation is required for a PA chest radiograph? -
0 degrees
● What is the rationale for using a 72 inch SID when performing
radiographs? - The SID is used to compensate for the increased OID
between the heart and image receptor
, ● Where should central ray enter for a PA X-ray? - Midsagittal at the
level of T7
● What positioning maneuver is performed so that the scapulae do not
superimpose the lung fields? - Place hands on hips
● If the clavicles superinmpose the apices of the lungs and the first rib
on a PA chest radiograph, what can be said regarding positioning? - The
patient's back was arched too far from the image receptor
● What is the central ray for a lateral chest X-ray? - Midcoronal at level
of T7
● When positioning for chest xrays, the top of the image receptor should
be placed: - 1.5 inches above the soft tissue of the shoulder
● Which of the following structures are best demonstrated on a PA
chest? Tracheal bifurcation, retrosternal space Manubrial extremity of
clavicles - Tracheal bifurcation, manubrial extremity
● The jugular notch of the sternum corresponds to which of vertebral
levels? - T2
● How much is the patient rotated for a PA oblique projection of the
sternum in a RAO position? - 15-20 degrees