CT Protocols Flashcards

1
Q

What is the contrast volume used for brain post-con CT?

A

50ml

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2
Q

What is the delay for a post-con brain CT?

A

5 minutes

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3
Q

What scans are completed for a CT pituitary fossa

A

Pre contrast brain
Pituitary Fossa
Post contrast brain

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4
Q

What is the contrast volume and delay used in a pituitary fossa CT

A

75ml @ 3ml/sec

40 second delay

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5
Q

What is the scan range for Pituitary Fossa CT

A

Base of skull to COW infero-superiorly

Posterior to ethmoid air cells and anterior to mid sphenoid sinus anteroposteriorly

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6
Q

What scans are completed for a CT Orbits?

A

Pre and post contrast of orbits

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7
Q

What is the contrast volume and scan delay for a post contrast orbits

A

50ml contrast

2-3 minutes post injection

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8
Q

What is the scan range for CT orbits?

A

Hard palate to supraorbital ridge

Include nost soft tissue anteriorly and ethmoid air cells posteriorly

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9
Q

What are three common indications for CT Petrous Temporal Bones?

A

Vertigo
Hearing Loss
Vestibular Disorder

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10
Q

What scans are completed for CT petrous temporal bones?

A

Non contrast temporal bones

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11
Q

What is the scan range for CT petrous temporal bones?

A

Mastoid process (Tip on base of temporal bone behind ear) to Sella Turcica - inluce all skin edges

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12
Q

What reconstructions are completed for CT

petrous temporal bones

A

Left and right temporal bones together

Left and right temporal bones separately

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13
Q

What is the scanning protocol for CT paranasal sinuses?

A

Non contrast paranasal sinuses

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14
Q

What is the scan range for CT paranasal sinuses

A

Occlusal plane to top of frontal sinus

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15
Q

What is the DFOV for paranasal sinuses?

A

skin edge of nose to mastoids

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16
Q

What is the scan protocol for CT facial bones?

A

Maxilla non contrast

Mandible non contrast

17
Q

What is the scan range and DFOV for CT facial bones Maxilla non contrast protocol?

A

Scan range - Occlusal plane to Supraorbital ridge

DFOV - Skin edge of nose to EAM

18
Q

What is the scan range and DFOV for CT facial bones mandible non contrast protocol?

A

Scan range - mental protuberane to supraorbital ridge

DFOV - Skin edge of nose to EAM