Skull Radiography Flashcards
1
Q
Name the different planes and baselines used In skull radiography
A
Orbital Meatal Baseline (OMBL) Anthropological Baseline (APB) Acanthiomeatal line Mentomeatal line Glabellomeatal line Orbitomeatal line Infraorbitomeatal line
Median sagital plane
Interpupilary plane
Auricular plane
2
Q
Clinical indications for skull images
A
?#
Sinus fluid
FB In orbits or IOFB
3
Q
What is used to obtain an image
A
24X30 cassette
Grid
77KvP 20MaS
Middle chamber of AEC if DR
4
Q
Positives and negatives of using CT
A
Negatives
Higher dose
Positives Quick Correct positioning can avoid eyes 3D recons can be done increasing information High fracture detection rate
5
Q
Positives and negatives of using plain film
A
Negatives
Patient cooperation is needed
More radiation to eyes and thyroid
Low fracture detection rate
Positives
Lower dose
Demonstrates bone abnormalities
6
Q
What are the 3 skull views
A
AP OR PA 20 degrees
Townes/ modifies Half axial
Lateral
7
Q
What are the 2 facial bones views
A
OM (occipital-mental)
OM 30 degrees
8
Q
How to obtain a PA 20 degrees
A
Patient sat in front of detector OMBL at right angles to detector Nose and forehead against the detector Tube angled 20 degrees caudally Beam emerging through the nasion
