Semester 1 imaging procedures Final exam review Flashcards
Evaluation criteria for a PA chest
Entire lungs from apices to costophrentic angles
No rotation
Scapula out of lung field
Outlines of heart and diaphragm
What’s demonstrated in the mediastinum
❤️ great vessels esophagus thymus lymphatics nerves tissue fat
What happens to diaphragm on inspiration
Diaphragm is lowered
What happens to diaphragm on Expirations
Diaphragm is elevated
How do you know if a patient took a deep breath?
10 posterior ribs visual
Why is a chest X-ray done at 72in
To demonstrate air/fluid levels
Move diaphragm to its lowest position
Minimize distortion/ magnification of ❤️ And vessels
Average body type 1/2 of population
Sthenic
Massive build high transverse organs short broad lungs
Hypersthenic
Long narrow thoracic cavity low midline stomach and gallbladder
Asthenic
Passes vertically through body dividing it into anterior and posterior half’s
MCP mid coronal plane
Imaginary plane divides body into equal right & left halfs
Midsagittal
What needs to be included on an upright abdomen?
Diaphragm
What needs to be included on a supine abdomen?
From pubic synthesis to diaphragm
Why do we do an upper right abdomen what pathology do we see?
Free air levels
Why do we do a left lateral decubitus abdomen?
When the patient can’t stand
What is a pneumothorax?
Air in the pleural cavity
What articulations must be included on a PA of the second digit?
From fingertip to distal portion of ajoining metacarpal
Proper positioning for a forearm AP?
Supinate hand, extend elbow, dorsal surface of arm against IR, adjust humeral epicondyles parallel to IR, slight super imposition of radial head neck tuberosity over proximal ulna
Proper positioning for a lateral forearm?
Flex elbow 90°
entire forearm from wrist to distal humerus, superimposed radius and ulna at distal end, super imposition of epicondyles
super imposition of radial head over coronoid process
Which joint classification allows for the greatest range of motion?
Diarthrodial
Joints that move in one plain flexion and extension
Hinge
Central ray location for PA hand
Third metacarpal MCP
Central ray location for PA wrist
Perpendicular to midcarpal area
Central ray location for AP forearm?
Perpendicular to midpoint of forearm
How much rotation for a P a oblique wrist
45°
Where is the central ray directed for the axial Planto dorsal projection of the calcaneus and how many degrees
40° cephalad to long access of foot
How much rotation do you do for ankle mortise?
15 to 20° until intermalleolar plane is parallel to the IR
When positioning a patient for a lateral medial lateral projection of the lower leg which criteria are true?
Patella is perpendicular to the IR, IR maybe kitty cornered, the femoral condyle‘s are perpendicular to the IR
Central ray angle for AP axial foot?
10° toward the heel entering the base of the third metatarsal or perpendicular to IR
How much do we owe Blake the foot for the medial oblique?
30°
Which projection of the elbow best demonstrates the olecranon process?
Lateral
Central ray angle for the clavicle standing/supine
15 to 30°
Central ray angle for the clavicle standing lordotic?
0 to 15°
Position and rotation for scapular Y view
LPO or RPO affected shoulder centered to IR patient at 45 to 60° angle CR perpendicular to scaphulohumeral joint
Grashley method
35 to 45° rotation toward affected side
Central ray location for AP knee
Half an inch inferior to the patella Apex
Central ray location for lateral knee
1 inch distal to medial at the condyle angled 5 to 7° cephalad
How much should you flex the knee for a lateral projection
20 to 30°
Positioning for PA axial homblad method and central ray location?
Central ray perpendicular to lower leg enters superior aspect of popliteal fossa
stand knee flex resting on a stool
stand knee flexed placed against IR or kneeling on table flex 70° for all
What is best demonstrated on tangential projection
Patella/vertical fracture
How do you know an AP knee is properly positioned?
Both knees without rotation knee joint spaces centered Patella superimposed on femur Femoral condyle symmetric Slight super imposition of fibular head open femorotibial joint space
What is best demonstrated on lateral weight bearing foot?
Longitudinal arch
Why do we do a lateral chest x-ray?
Heart is on the side and it’s less magnified
Joints of the shoulder girdle?
AC, SC, scapulohumeral
KVP range for a knee radiograph?
70 to 85
Where are the central ray enters and exits the patient
Projection
What is best demonstrated on camp Coventry BeClaire and Homblad?
InterConylar fossa and joint mice
How much do you angle in the knee and the central ray for the homblad method
Knee 70° CR 20°
How much do you angle the knee for camp Coventry?
40 to 50°
How much do you flex the knee for BECLAIR
60°
Positioning for the Settegast method
Patient supine or prone flexed knee as much as possible loop bandage around ankle if desired please IR under the knee