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CT Review 6

Anatomy

QuestionAnswer
What are the scan planes for a ct of the head? parallel or 15 degrees above the OML
Ct of the head are acquired from what points of the head? From the base of the skull to the vertex
Name the 4 types of strokes? 1.cerebral embolism 2.cerebral thrombosis 3.intracerebral hemorrhage 4.sub-arachnoid hemorrhage
When giving IV contrast for a CT of the head, it is important to wait for the contrast to break the what? blood brain barrier
What is the largest cartilage structure in the neck? thyroid
What ligaments of the neck extend between the arytenoid cartilage and thyroid cartilage? larynx
What bone is located below the mandible at the level of C3. hyoid bone
The larynx is located where? from C3 to C6
When scanning the chest you should scan from what point to what point? apices to adrenals
Liver mets appear as what on a CT scan? low density lesion
What artifacts may be seen on a ct of the pelvis? 1.metal:hip prothetics 2.beam hardening:pelvie girdle
An unstable C1 fracture is called? jefferson's fracture
What is the injection rate for a CTA? 4-6 ml per sec
What is the most frequent reason for an order of CT of the Head? CVA
Where does a ST Neck ct scan start at? At the level of the external auditory canal
What is the largest carotid artery? common carotid
Spinal cord ends at what level? L3
Where is the pituitary gland located? within the sella turcica of the sphenoid bone
At what level does the aorta bifurcate? L4
what is a pneumothorax? A collapsed lung is a buildup of air in the space between the lung and the chest wall (pleural space).
What is the position for a scout of the abdomen? from the diaphragm to the crest
what is an Acute Subdural Hematoma is a clot of blood that develops between the surface of the brain and the dura mater, the brain’s tough outer covering, usually due to stretching and tearing of veins on the brain’s surface
Why do you put a pad under the knees for an L-spine CT? to reduce the lordic curve
What is diverticulosis? is a condition that develops when out-pouches form in the wall of the colon
What is the slice thickness for a head ct from the base of the skull thru the posterior fossa? 5mm
What is the slice thickness for a head ct after the posterior fossa thru the vertex? 10mm
What is peristalsis? is a series of wave-like muscle contractions that moves food to different processing stations in the digestive tract
Created by: Chrslarsen