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1) Where is the CR located for a PA chest?
- Level of T7
- About 7-8 Inches below Vertebral Prominence
2) What SID is used for a PA Chest
3) For a Lateral Decube Chest, where is the CR located for it?
- 3-4 Inches below jugular notch
- Around the level of T7
4) If there is suspected fluid in the lungs on the left lung, how would you position for a lateral chest decube?
- It would have to be a left lateral decubitis.
- If fluid is suspected in a certain lung, that side must be the side thats down for a
5) If there is for example, suspected air in the pleural cavity of the right lung, how would you position for a lateral decube?
- The right lung would have to be up, hence you would do a left lateral decube to
- demonstrate the air.
- When there is suspicion of air in the lungs, the side with the air will be up.
6) How do you position for Apical Lordotic Chest?
Have patient about 1 foot away from IR and lean back with shoulders to the IR.
7) Where should the CR be for the apical lordotic AFTER positioning?
3-4 inches below jugular notch
8) For a KUB, where should your central ray be and a minimum of what SID?
CR should be directed at the level of the illiac crest with a minimum of 40 SID.
9) Where is the CR on a lateral decube abdomen?
CR should be directed 2 inches above level of Illiac Crests.
10) Why is the left lateral decube usually preferred?
- This left lateral decube shows free air in the area of the liver away from gastric bubbles
- ( Pretty much so that the air free air won't be confused with gastric bubbles in the
- stomach )
11) For an AP erect abdomen, where is the CR directed? Why is it diffferent from a regular KUB?
- CR is directed 2 inches above the illiac crest.
- This is different from the supine because in supine KUB's, CR is right at the level of illiac
12) When doing a PA Axial Scaphoid, where is the scaphoid bone usually located?
The scaphoid is about 2 cm ( 3/4 inch ) distal and medial to the radial styloid process.
13) How do you position for a PA axial scaphoid? How is the CR directed?
- Position for a PA wrist with scaphoid centered to the IR and evert the hand towards the
- ulnar side as best as the patient can without moving the forearms.
- You angle the CR 10-15 degrees proximally and at the location of the scaphoid.
14) For the elevated PA Scaphoid position, what is another name for this view?
Modified Stecher Method
15) How do you position for the Modified Stecher Method? Where is the CR directed?
- Place hand and wrist palm down and elevated with a 20 degree sponge ( right under the
- hand ) and again evert the hand towards the ulnar side.
- CR directed perpendicular to the IR right at the scaphoid.
16) How do you position for a PA Radial Deviation wrist? Where is the CR directed?
- Position as you would for a PA projection wrist and gently invert the hand towards the
- thumb side.
- CR directed at midcarpal area.
17) How do you position for a Inferosuperior Projection ( Carpal Tunnel ) view of the wrist? Where is the CR directed?
- You hyperextend the wrist as far as the patient can by having the patient grab onto the
- hand and extend it themselves.
- You angle the tube 25-30 degrees towards the long axis of the hand 1 inch below the
- base of the third metacarpal.
18) What is another name for the carpal tunnel/tangential inferiorsuperior projection of the wrist?
19) For the Carpal Bridge view of the wrist, how do you position for it? Where is the CR directed?
- Patient stands and leans over the IR and place the dorsal surface of their hand on the
- cassette with their palms upward
20) For oblique elbows, how far do you rotate the arm laterally and medially?
45 degrees medially and laterally
21) For the Clavicle views, whats important to remember as far as the amount of positions to know as well as the angulations?
- For the clavicle there are two views:
- - AP
- - AP Axial with a 15-30 degree cephalic angle
22) For the radial head laterals, what are the four positions for the hand/wrist?
- 1. Hand Supinated
- 2. True Lateral
- 3. Pronated hand
- 4. Internally Rotated.
23) For a transtohrasic lateral projection of the humerus, how do you position for it? Where is the CR directed?
- Place affected side towards the IR in neutral position and the raise the opposite arm up
- above the head.
- CR directed through the thorax at mid-diaphysis with short and shallow breaths.
24) What is another name for the glenoid cavity view Grashey Method.
It's the Posterior Oblique Position.
25) How do you position for the Grashey Method Where is the CR directed?
- Patient is erect and rotated 35-45 degrees towards affected side.
- CR directed perpendicular to the IR at the scapulohumeral joint ( 2 inches inferior and
- medial from superolateral border of the shoulder )
26) For the Y view, how far do you turn the patient approximately?
27) What's important to know about the radial head lateral views as far as how many positions you take?
You take 4 views for the radial head in accordance to the rotation of the haand and wrist