Anatomy/Positioning Flashcards
TRUE OR FALSE
When MCP joints are under examination and the pt cannot extend the hand enough to place its palmar surface in contact with the IR, the position of the hand can be reversed for an AP projection.
TRUE
Merrills 1 p. 116
Which digits should overlap and which digits should be separated on a PA oblique hand projection?
Minimal overlap of 3,4,5 metacarpal shafts
slight overlap of the metacarpal bases and heads
seperation of the 2,3 metacarpals
How would you alter the lateral projection of the hand to better demonstrate fractures of the 5th metacarpal?
Rotate the hand 5 degrees posterior from the true lateral
p. 121 Merrill’s 1
TRUE OR FALSE
Re : PA projection of wrist
A 30 degree central ray angle towards the elbow will elongate the scaphoid, capitate and lunate.
FALSE
30 degree angle towards the elbow elongates BOTH scaphoid and capitate
p. 124 Merrills 1
TRUE OR FALSE
The carpal interspaces are better demonstrated in the AP wrist than the PA wrist.
If false, why?
TRUE
Because of the oblique direction of the interspaces, they are more closely parallel with the divergence of the x-ray beam
p. 125 Merrills 1
Which projection best demonstrates the trapezium and distal 1/2 of the scaphoid?
PA oblique of the wrist - lateral rotation
p. 128 Merrills 1
Which projection best demonstrates the triquetrium, pisiform and hook of hamate?
AP oblique of the wrist - Medial rotation
p. 129 Merrills 1
TRUE OR FALSE
Re : Scaphoid PA axial
The 20 degree angulation of the wrist places the scaphoid at right angles to the central ray so that it is projected without self-superimposition.
TRUE
p. 132 Merrill’s 1
TRUE/FALSE
When injury to soft tissue around the elbow is suspected the joit should be flexed only 30 or 35 degrees.
TRUE
p. 145 Merrill’s 1
Which projection of the elbow should be performed to best demonstrate the coronoid process?
AP oblique medial rotation
p. 146 Merrill’s 1
Which projection would best demonstrate the radial head, allowing the tuberosity free of superimposition?
AP oblique lateral rotation
p. 127
Merrill’s 1
TRUE OR FALSE
In the AP humerus projection of the humerus the lesser tubercle is seen in profile.
FALSE
The humeral head and GREATER tubercle is seen in profile
The lesser tubercle is located between the humeral head and the greater tubercle
p. 159 Merrill’s 1
TRUE OR FALSE
Which projections would best demonstrate the lesser tubercle in profile?
AP lateral projection of the humerus p. 160 Merrill's 1 AP shoulder with internal rotation p. 176 Merrill's 1 Superoinferior p. 187 Merrill's 1 Inferosuperior axial p. 184 Merrill's 1
Which projection of the shoulder is useful in the evaluation of suspected shoulder dislocation?
Scapular Y
p. 189 Merrill’s 1
TRUE/FALSE
When performing the scapular Y, the position of the arm is not critical because it does not alter the relationship of the humeral head to the glenoid cavity.
TRUE
p. 189 Merrill’s 1
Describe the appearance of an anterior and posterior shoulder dislocation in regards to the scapular Y projection
Anterior dislocation : humeral head beneath the coracoid process
Posterior dislocation : humeral head beneath the acromion process
Which projection is best to demonstrate the tuberosity of the 5th metatarsal?
Foot - AP oblique projection - medial rotation
p. 261 Merrill’s 1
TRUE/FALSE
In the AP projection of the ankle, the talofibular articulation should be open.
FALSE
Will not be open nor shown in profile
This is a positive sign, this will indicate that the patient has no ruptured ligaments or other type of separations
p. 285 Merrill’s 1
TRUE OR FALSE
On the lateral projection of the ankle the fifth metatarsal should be seen.
TRUE
This will allow to check for a Jones fracture (# of the 5th metatarsal tuberosity)
p. 286 Merrill’s 1
TRUE OR FALSE
In the AP oblique projection (45 degrees) of the ankle the talofibular joint space is in profile.
FALSE Mortise projection (15-20 degrees) the talofibular joint space is in profile
Requisition is questioning “joint mice” loose bodies. Which projection should be performed?
PA axial projection - Intercondylar fossa
p. 314 Merrill’s 1
Which 3 bones join together to form the acetabulum?
ilium, pubis, ischium
p. 335 Merrill’s 1
TRUE OR FALSE
The ilium, pubis, ischium are separated by cartilage in youth and become fused into one bone in adulthood.
TRUE
p. 335 Merrill’s 1
TRUE/FALSE
The male pelvis is normally wide and shallow.
FALSE
the female patient is wide and shallow
the male patient is narrow and deep
- **see differences between male and female pelvis
p. 340 Merrill’s 1
TRUE OR FALSE
The zygapophyseal joints are demonstrated on an AP lumbar spine
False
p.412,420-423 Merrill’s 1
TRUE OR FALSE
A PA Lumbar spine further reduces dose compared to AP lumbar spine.
TRUE
p. 424 Merrill’s 1
What is the recommended SID for a lumbar spine and why?
48 inces (122 cm) - reduce distortion, more completely opens the intervertebral joint spaces p. 425 Merrill's 1
Where is the central ray directed for a lumbosaccral exam and for a lumbar exam?
Lumbosaccral : L4
Lumbar : 3.8 cm above iliac crest (L3)
Why is the last lumbar joint space (lumbosacral) disk space not well demonstrated in an AP L-spine?
Because of the angle at which the last lumbar segment joins the sacrum
p. 426 Merrill’s 1
Where are the pedicles located on a true AP L-spine?
See p. 414 Martensen
Where are the lamina located on a true AP L-spine?
see p. 414 Martensen
What is the angle of rotation for an esophagus RAO?
35-40 degrees
What is the degree of rotation when questioning visualization of the L5-S1 joint for LPO of the L-spine?
60 degrees
Merill’s 1 pg 420
What is the degree of rotation to visualize the kidneys, RPO?
30 degrees
Merill’s 2 pg 208
Give examples of what is considered part of the “low residue diet”.
clear liquid diet: bouillon, apple juice, gelatin, light coloured tea, lots of water
Low residue diet: white rice, pasta, well cooked veggies, meat/fish, eggs
Dr on call asks you to centre at T2-T3 for upper T-spine x-ray. The patient is on a backboard. How would you find proper position for this x-ray?
Jugular notch
Which of the following structures is NOT usually demonstrated on a post-op t-tube cholangiogram?
a) right and left hepatic ducts
b) sphincter of Oddi
c) pancreatic duct
d) common bile duct
c) pancreatic duct
Green binder digestive system
SEE MERRILL’S FOR INFO
The purpose of compression devices during excretory urography is to:
a) restrict involuntary movement
b) obtain filling of the calyces and pelves
c) delineate the ureters and bladder
d) demonstrate hidden calculi
b) obtain filling of the calyces and pelves
SEE MERRILL’S
Green binder digestive system
What is the name of the method used to catheterize the femoral artery during angiography?
a) direct puncture method
b) Sweet’s technique
c) cutdown method
d) Seldinger method
d) Seldinger
SEE MERRILL’S
Green binder digestive system
At which level is the suprasternal notch located?
T2-T3
SEE MERRILL’S
Green binder digestive system
Question 1
Which of the following bones are formed by intramembranous ossification?
a) carpal bones
b) humerus
c) scapula
d) clavicle
d) clavicle
SEE MERRILL’S
Green binder digestive system
Question 2
Which of the following arteries branch from the aortic arch?
- brachiocephalic
- right common carotid
- left common carotid
- right subclavian
- left subclavian
- left coronary
1) bradiocephalic
3) left common carotid
5) left subclavian
SEE MERRILL’S
Green binder digestive system
Question 25
The trachea bifurcates at the level of?
T4-T5
SEE MERRILL’S
Green binder digestive system
Question 30
The upper part of the oblique fissure of the right lung separates the
a) superior and middle lobes
b) middle and inferior lobes
c) superior lobe and the lingula
d) superior and inferior lobes
d) superior and inferior lobes
SEE MERRILL’S
Green binder digestive system
Question 31
Where are the adenoids located?
Nasopharynx
SEE MERRILL’S
Green binder digestive system
Question 33
Where is the esophagus located within the thoracic cavity?
a) in the posterior mediastinum
b) in the middle mediastinum
c) anterior and to the right of the descending aorta
d) posterior and to the right of the descending aorta
a) posterior mediastinum,
c) anterior and to the right of the descending aorta
SEE MERRILL’S
Green binder digestive system
Question 37
Which of the following parts of the nephron are found in the medulla of the kidney?
a) bowman’s capsule
b) renal pyramids
c) glomerulus
d) loop of Henle
d) loop of Henle
SEE MERRILL’S
Green binder digestive system
Question 38