Proptosis meaning
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abnormal protrusion or displacement of an eye or other body part.
Contrast-enhanced imaging of the orbits (in venous phase) can be accomplished by:
A. Initiating contrast injection 30 seconds prior to scanning
B. Initiating contrast injection 60 seconds prior to scanning
C. Initiating contrast injection 120 seconds prior to scanning
D. Initiating contrast injection 15seconds prior to scanning
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B. Initiating contrast injection 60 seconds prior to scanning
Venus phase through the orbits is approximately 60 seconds after initiating
contrast injection. Scanning 15 seconds or 30 seconds prior to injection
, would more likely be in arterial phase. Scanning at 120 seconds would likely
miss the contrast bolus completely.
How should the gantry be oriented when scanning CT sinuses with the patient in the
prone position?
A. Parallel to the hard palate
B. Perpendicular to the hard palate
C. Parallel to the supra-orbital meatal line
D. Perpendicular to the supra-orbital meatal line
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B. Perpendicular to the hard palate
The hard palate is the reference point for Imaging in the face. Axial images
through the face or sinuses should be oriented parallel to the hard palate.
Coronal images, such as the case in this question, should be oriented
perpendicular to the hard palate.
A general survey of the sinuses is requested on 35 year old female with chronic
sinusitis. Compared to 1.25 mm slices, 3.75 mm slices will result in:
A. More image noise
B. More spatial resolution
C. Fewer images
D. Lower dose
Give this one a try later!
Give this one a try later!
abnormal protrusion or displacement of an eye or other body part.
Contrast-enhanced imaging of the orbits (in venous phase) can be accomplished by:
A. Initiating contrast injection 30 seconds prior to scanning
B. Initiating contrast injection 60 seconds prior to scanning
C. Initiating contrast injection 120 seconds prior to scanning
D. Initiating contrast injection 15seconds prior to scanning
Give this one a try later!
B. Initiating contrast injection 60 seconds prior to scanning
Venus phase through the orbits is approximately 60 seconds after initiating
contrast injection. Scanning 15 seconds or 30 seconds prior to injection
, would more likely be in arterial phase. Scanning at 120 seconds would likely
miss the contrast bolus completely.
How should the gantry be oriented when scanning CT sinuses with the patient in the
prone position?
A. Parallel to the hard palate
B. Perpendicular to the hard palate
C. Parallel to the supra-orbital meatal line
D. Perpendicular to the supra-orbital meatal line
Give this one a try later!
B. Perpendicular to the hard palate
The hard palate is the reference point for Imaging in the face. Axial images
through the face or sinuses should be oriented parallel to the hard palate.
Coronal images, such as the case in this question, should be oriented
perpendicular to the hard palate.
A general survey of the sinuses is requested on 35 year old female with chronic
sinusitis. Compared to 1.25 mm slices, 3.75 mm slices will result in:
A. More image noise
B. More spatial resolution
C. Fewer images
D. Lower dose
Give this one a try later!
