Body CT Protocol Quiz

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Body CT Protocol Quiz - R1

The requisition states “rule out pulmonary embolism”. Creatinine 1.7. The doctors feel the scan is necessary. What should you do?

1 point

Cancel the study and do VQ scan

Do the CT, but use reduce dose of 320 mgI/mL isosomolar contrast rather than 350 mgI/mL

Do the study as routine with 120 mL of 350 mgI/mL

Ask techs to give bicarbonate drip, then use 350 mgI/mL contrast

Clear selection

Patient presents with lower GI bleeding. Correct protocol is:

1 point

Positive oral and IV contrast with arterial and venous phases

Positive oral and IV contrast with precontrast, arterial and venous phases

Water or no oral contrast and IV contrast with arterial and venous phases

Water or no oral contrast and IV contrast with precontrast, arterial and venous phases

Clear selection

A delayed acquisition in an adrenal protocol, often performed at 15 minutes after initiating contrast infusion, is used to demonstrate which of the following?

1 point

Unveils necrosis that is not apparent on earlier acquisitions, to diagnose adrenocortical carcinoma

Confirms that a lesion is an adenoma by showing low levels of percentage washout (<60% APW, <40% RPW)

Identifies high levels of delayed enhancement in adenomas

Confirms that a lesion is not an adenoma by showing low levels of percentage washout (<60% APW, <40% RPW)

Clear selection

Which phase(s) are indicated in the setting of pyelonephritis and suspect abscess:

1 point

Precontrast, arterial, venous, delayed (Hematuria protocol)

Precontrast, arterial, delayed (Abbreviated hematuria protocol)

Precontrast and venous

Venous or delayed (one phase only)

Clear selection

When scanning a patient for pancreatic cancer staging, which of the following protocols is appropriate?

1 point

Arterial and venous phases

Noncontrast and venous phases

Venous and excretory phases

Noncontrast, arterial and venous phases

Clear selection

When scanning a patient for suspected appendicitis, which of the following statements is correct?

1 point

IV and positive oral contrast are mandatory

IV contrast is important; positive oral contrast is optional

Volumen should be used as oral contrast

IV, oral and rectal contrast should be administered

Clear selection

Which of the following is the typical contrast injection rate and volume for a dual phase liver CTA?

1 point

2-3 cc/sec, 70 cc contrast

3-5 cc/sec, 90 cc contrast

5 cc/sec or higher, 120 cc contrast

8-10 cc sec, 200 cc contrast

Clear selection

A head CT was ordered as part of trauma protocol. Which is correct?

1 point

Need IV contrast. Brain and bone reconstructions

Need IV contrast. Brain reconstruction only

No IV contrast. Brain and bone reconstructions

No IV contrast. Brain reconstruction only

Clear selection

When performing a PE study, which of the following is correct?

1 point

We use bolus trigger in the pulmonary trunk, set at 200HU

We use bolus trigger in the pulmonary trunk, set at 100HU

We use bolus trigger in the aorta, set at 100HU

We use bolus trigger in the aorta, set at 200HU

Clear selection

When scanning a patient for lymphoma follow-up, which of the following protocols is appropriate?

1 point

Arterial and venous phase needed

Non contrast and venous phase needed

Venous and excretory phases needed

Only venous phase needed

Clear selection

When scanning a patient with abdominal and pelvic CT for carcinoid tumor staging, which of the following protocols is appropriate?

1 point

Arterial and venous phase needed

Non contrast and venous phase needed

Venous and excretory phases needed

Only venous phase needed

Clear selection

For which chest protocol(s) is ECG gating used?

1 point

pulmonary embolism

suspected out aortic dissection

suspected mediastinal mass

chest trauma patient

Clear selection

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