Free Computed Tomography (CT Brain) Questions and Answers

Question 1

Brain non-contrast CT: Hypertension history and rapid start of left facial droop. What does the picture depict?

Accepted Answer

Intracerebral haemorrhage

Answer

Subdural haemorrhage

Answer

Subarachnoid haemorrhage

Answer

Intraventricular haemorrhage

Answer

Enhancing mass

Question 2

Poor historian, his perplexity has grown over the past few weeks. What does the picture depict?

Accepted Answer

Bilateral subdural collections

Answer

Subarachnoid haemorrhage

Answer

Left subdural collection

Answer

Brain atrophy without evidence of haemorrhage

Answer

Intraventricular haemorrhage

Question 3

Colon cancer patient after brain contrast MRI Which diagnosis is more likely?

Accepted Answer

Two enhancing metastases

Answer

Two benign meningiomas

Answer

Subarachnoid haemorrhage

Answer

Two primary brain tumors

Answer

Two areas of normal calcification

Question 4

Non-contrast CT brain: anticoagulated patient with right hemiparesis and abrupt onset of disorientation. What does the picture depict?

Accepted Answer

Intraventricular haemorrhage

Answer

Subdural haemorrhage

Answer

Enhancing mass

Answer

Calcification of the choroid plexus

Answer

Epidural haemorrhage

Question 5

The quantity of detector rows X Size of each detector is Section Width; for example, 64 x 0.625 is 40mm.

Beam Collimation/Number of Detector Rows = Detector Collimation, where 0.625 = 40 mm/64.

Accepted Answer

MSCT Beam Collimation Consists of: Beam (Formula)

Answer

Desired Quality in a CT Detector: High Dynamic Range

Answer

MSCT Beam Collimation Consists of: Post-Patient Collimation

Answer

MSCT Beam Collimation Consists of: Beam

Question 6

BEAM COLLIMATION and DETECTOR COLLIMATION settings determine the section width in the MSCT System.

Accepted Answer

MSCT Beam Collimation Consists of: Post-Patient Collimation

Answer

SSCT Beam Collimation Consists of:

Answer

Collimation (msct)-detector (section) collimation

Answer

MSCT Beam Collimation Consists of:

Question 7

A digital radiograph was produced while the patient bed was translated (moved) through the gantry, maintaining the X-ray tube and detector array in place.

Accepted Answer

What is a Scout Image in CT ?

Answer

What Does a SSCT AND MSCT require?

Answer

What is the purpose of Flying Focal Spot Technology ?

Answer

What is the purpose of an scout image in CT ?

Question 8

What is the typical Hounsfield Unit (HU) range for normal brain tissue on a non-contrast CT scan?

Accepted Answer

Computed Tomography (CT)

Answer

Magnetic Resonance Imaging (MRI)

Answer

Positron Emission Tomography (PET)

Answer

Ultrasound

Question 9

What is the typical Hounsfield Unit (HU) range for normal brain tissue on a non-contrast CT scan?

Accepted Answer

-100 to 100 HU

Answer

0 to 50 HU

Answer

100 to 200 HU

Answer

200 to 300 HU

Question 10

Which type of intracranial hemorrhage appears hyperdense on a CT scan?

Accepted Answer

Epidural hemorrhage

Answer

Subdural hemorrhage

Answer

Subarachnoid hemorrhage

Answer

Intraventricular hemorrhage