Exams

Question 1

What phase of the heart is best utilized for CT cardiac images

Answer 1

• diastolic

* relaxation less motion during relaxation

Question 2

Routine brain is best accomplished with axial or helical

Answer 2

•axial

Question 3

Exams of the brain requiring non contrast

Answer 3

• cerebral trauma
• hydrocephalus
• hemorrhage
• infarct (early)

Question 4

Head exams that require with and without

Answer 4

• mass
• lesion
• metastasis
• aneurysm
• headache and seizure

Question 5

Brain with contrast delay typical delay time and why and injection rate

Answer 5

• injection rate 1cc per sec

* typically 5min delay from start of injection to allow contrast to cross the blood brain barrier

Question 6

Temporal bone DFOV and slice

Answer 6

• small DFOV magnifies the image

* the smaller the structure the thinner the slice <1mm

Question 7

Paranasal sinus best with or without

Answer 7

•without contrast media

Question 8

Facial bone with IV contrast should be when diagnosed with

Answer 8

• inflammation
• infection
• mass

Question 9

CT gated cardiac is set to trigger during

Answer 9

•the T wave

Question 10

Nephrographic phase

Answer 10

• 100-180 second delay from start of injection

* renal cortex correct is enhanced

Question 11

Corticomedullary phase

Answer 11

• 20-25 seconds post injection

* enhances arterial flow