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CT Review 6
Anatomy
| Question | Answer |
|---|---|
| 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
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