Soft Tissue Neck Flashcards
What would be some Indications for a neck CT
Tumors, infection, trauma, congenital defects, enlargement of glands, abscess, vasculature
What is the patient position for CT Soft Neck
Supine, head first, have patient lower shoulders as much as possible, extend neck slightly so that hard palate is perpendicular to the table.
If a patient cannot extend their neck for the hard palate to be perpendicular to the table what do you do
You can angle the gantry to be parallell to the hard palate
Where should the internal laser be for CT soft neck
Centre on the glabella
What do you scan for CT soft neck
Mid orbit to clavicular heads
What are the windows for CT soft neck
Soft tissue 450ww/75wl
Bone window 4000ww/400wl
What is the reconstruction thickness for CT soft tissue neck
Thickness 2.5mm at 1.25mm intervals
Is CM used in CT soft neck
Yes always unless contraindicated.
What is the goal when giving CM to a patient for a CT soft neck
To allow the mucosa, lymph nodes, and pathological tissue enough time to become sufficiently enhanced
Is the CM given all at once or as a split
Split
First bolus 50ml, 2 min delay
Second bolus 75ml, 25s delay
scan
What is the total CM administered
125ml @ 2ml/s
Is there oral contrast given for CT soft neck
No, unless there are other exams being performed at same time.
What are two patient breathing instructions you could give to a patient for CT soft neck
Modified vasalva maneuver, pronounce a long “e” during scan.
Both of these distend the pyriform sinuses. “e” helps us evaluate the aryepiglottic folds
What is the simplest breathing instruction given for CT soft neck
Hold your breath and don’t swallow
What is CTV
CT Venography
