CSB041 Specialised Imaging Techniques

57 cards   |   Total Attempts: 189
  

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Why is image stitching completed?
For post surgical reviews, long limb measurements and scoliosis
What difference in limb length (cm) is considered bad?
>2cm
Why are long limbs not measured from standard images?
The anatomy is distorted by diverging beams - so the measurements will be incorrect
Name the three methods of image stitching
Long IR, Source Tilting or Source Translation
What are the two treatments used for correcting long bone differences and how do they differ?
Epiphyseodesis - Pins are put into the epiphyseal plate which stops the longer leg from growing to allow the short leg to "catch up" Ilizarov Frame - None is broken and pins are attached. A ring surrounds the limb and the distance is lengthened every day
What are the 5 principles of trauma imaging?
Do not remove splints or dressings, do not move the patient/limb, include both ends of long bones, 2 projections at 90 degrees, projections as close as possible to standard projections
What is the Reverse oblique hand projection used to demonstrate?
# of the head of the 5th MC (boxer's #)
Where is a Torus # usually found and what supplementary projection best demonstrates this?
Usually near the metaphysis of the distal radius (very discreet # line, buckling of cortical surface occurs) Reverse oblique wrist should demonstrate this.
What is the routine projections for a trauma shoulder?
AP shoulder girdle, Lateral oblique scap Y, (+/-) glenohumeral joint, (+/-) garth's shoulder
Describe the positioning of a reverse lateral oblique shoulder projection.
From supine - raise the affected side of the patient (until the scapula is in the scap Y position) and place the IR below the shoulder on the bed. Straight tube is used. If the patient is not elevated - angle the tube accordingly to match the angle of the scapula (IR may have to go under the trauma bed).
What is a Maisonneuve's # and where is it commonly found?
# of the neck of fibula which is often associated with a distal tibia #
What are two ways you can tell if a patient may have a NOF #?
The affected leg may be foreshortened and externally rotated.
What is Pauwels angle?
A classification of femoral neck #'s
What is Garden classifications?
Classifications of Hip #'s (four stages)
What are the tube angles used for pelvic outlet views (female and male)?
CEPHALIC Female: (30-45 degrees), Male: (20-35 degrees)