Common Mistakes Flashcards
For Pelvic x-rays, Hip x-rays, and for distal femur, we must
internally rotate the foot 10 degrees to produce anteversion of femur
For Lateral Lumbar
we need to make it more posterior - almost going to the butt MCP
For spot projections,
10 x 10 area, centre more posterior on the butt,
MACCAD
Markers, Angle, Centring, Collimation, Alignment with bucky, Distance,
Which projections are 18 x 24?
AP Coccygx
What are the 35 x 43
All thoracic, lumbar, distal femur and AP pelvis, pelvis inlet and outlet
For a swimmers projection what should be separated
the humeral heads
For hip and pelvis we have included
one third of the proximal femur
Shenton’s line tells us
whether hip dislocation or fracture is present
Pelvic inlet projects
the PS inferiorly
Pelvic outlet projects
the PS superiorly
Spondylolisthesis
where the neck of the scottie dog is broken
Overexposed = what contrast?
High contrast, meaning that the differences in density between tissues and structures are reduced, making it harder to distinguish them
Overexposed is when
the images are too dark
Underexposed =
low contrast
What is the Kvp for distal femur and cervical spine (excl swimmers)?
75kVp
Swimmers projection is
90kvp
Lat spot projection is
90kVp
Pelvic inlet, outlet and lateral hip is what kvp
80kvp
Thoracic and Lumbar are
80kVp
Sacrum, coccygx are
75kVp
For thoracic, you need to
hold your breath
For cervical, and lumbar
u need to hold still and have ur breath out
In an AP cervical spine XR
we collimate from the bottom of the chin to the jugular notch
For oblique cervical we
need a 15 degree angle
For lateral and swimmers
we need 180cm FDD
For the thoracic only we
need patient to hold their breath in and take the XR
What were my mistakes in my previous OSCE?
- too complex terms - cut them out
- Setting up too long - need to be proficient, smooth and sharp
- Explain the instruction and then position pt
Pelvic inlet has a centring at
level of ASIS
