Question 1

An undesired feature or density in the CT image not representative of anatomy is a(n):

Accepted Answer

A)  CT aberration. 
B)  noise. 
C)  artifact. 
D)  windowing flaw. 
A)  CT aberration. 
B)  noise. 
C)  artifact. 
D)  windowing flaw.

Question 2

Prospective electrocardiogram (ECG)gating used during cardiac CT permits the heart to be scanned:

Accepted Answer

A)  during maximum cardiac contraction. 
B)  while tricuspid and mitral valves are open. 
C)  during the diastole cycle. 
D)  during the systole cycle. 
A)  during maximum cardiac contraction. 
B)  while tricuspid and mitral valves are open. 
C)  during the diastole cycle. 
D)  during the systole cycle.

Question 3

Which one of the following pathologic indications for a head CT is directly related to trauma?

Accepted Answer

A)  Hydrocephalus 
B)  Brain atrophy 
C)  Brain abscess 
D)  Subdural hematoma 
A)  Hydrocephalus 
B)  Brain atrophy 
C)  Brain abscess 
D)  Subdural hematoma

Question 4

Glucose and oxygen are able to pass through the blood-brain barrier.

Accepted Answer

A) True 
 B)False

Question 5

Typical slice thickness for a spine CT range is usually no greater than _____ mm.

Accepted Answer

A)  3 
B)  7 
C)  10 
D)  15 
A)  3 
B)  7 
C)  10 
D)  15

Question 6

Approximately ____ of all head CTs generally require intravenous contrast media.

Accepted Answer

A)  10% to 30% 
B)  30% to 50% 
C)  50% to 90% 
D)  None of the above; all require contrast media. 
A)  10% to 30% 
B)  30% to 50% 
C)  50% to 90% 
D)  None of the above; all require contrast media.

Question 7

Match each tissue with the correct CT number range.(Use each choice only once.)
-Fat

Accepted Answer

A) +50 
B) +40 
C) +20 
D) -100 
E) -200
F)-1000
G)+1000 or higher 
A) +50 
B) +40 
C) +20 
D) -100 
E) -200
F)-1000
G)+1000 or higher

Question 8

CT colonography has eliminated the need for the patient undergoing a bowel prep.

Accepted Answer

A) True 
 B)False

Question 9

MATCHING
Select the correct lettered portion of the brain.(Use each choice only once.)
  
-Midbrain

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E
F)F 
A) A 
B) B 
C) C 
D) D 
E) E
F)F

Question 10

What is the chief disadvantage of CT colonography over conventional endoscopy?

Accepted Answer

A)  Cost 
B)  Inability to biopsy or remove polyps 
C)  Bowel preparation required 
D)  Time consuming procedure 
A)  Cost 
B)  Inability to biopsy or remove polyps 
C)  Bowel preparation required 
D)  Time consuming procedure

Question 11

What is the name of the deep fissure that separates the two cerebral hemispheres?

Accepted Answer

A)  Longitudinal fissure 
B)  Central sulcus 
C)  Posterior, central sulcus 
D)  Falx cerebri 
A)  Longitudinal fissure 
B)  Central sulcus 
C)  Posterior, central sulcus 
D)  Falx cerebri

Question 12

A collection of blood accumulating under the dura mater caused by trauma is termed:

Accepted Answer

A)  subarachnoid hemorrhage. 
B)  glioma. 
C)  subdural abscess. 
D)  subdural hematoma. 
A)  subarachnoid hemorrhage. 
B)  glioma. 
C)  subdural abscess. 
D)  subdural hematoma.

Question 13

Artifacts caused by patient motion are reduced with volume CT scanning as compared with earlier generation scanners.

Accepted Answer

A) True 
 B)False

Question 14

The cerebrum is divided into five lobes.

Accepted Answer

A) True 
 B)False

Question 15

Hemianopia is a condition defined as:

Accepted Answer

A)  blindness occurring in half of the visual field in each eye. 
B)  an iron deficiency producing intracranial bleeding. 
C)  a congenital tumor in the thalamus. 
D)  an abnormal collection of CSF in the cranial ventricles. 
A)  blindness occurring in half of the visual field in each eye. 
B)  an iron deficiency producing intracranial bleeding. 
C)  a congenital tumor in the thalamus. 
D)  an abnormal collection of CSF in the cranial ventricles.

Question 16

Match each tissue with the correct CT number range.(Use each choice only once.)
-Lung tissue

Accepted Answer

A) +50 
B) +40 
C) +20 
D) -100 
E) -200
F)-1000
G)+1000 or higher 
A) +50 
B) +40 
C) +20 
D) -100 
E) -200
F)-1000
G)+1000 or higher

Question 17

Visual centers in the brain are located in the ____ lobe of the cerebrum.

Accepted Answer

A)  parietal 
B)  occipital 
C)  insula 
D)  frontal 
A)  parietal 
B)  occipital 
C)  insula 
D)  frontal

Question 18

What specifically do the CT detectors measure?

Accepted Answer

A)  Attenuation 
B)  Patient dose 
C)  Primary radiation 
D)  Scatter radiation 
A)  Attenuation 
B)  Patient dose 
C)  Primary radiation 
D)  Scatter radiation

Question 19

MATCHING
Select the correct lettered portion of the brain.(Use each choice only once.)
  
-Medulla

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E
F)F 
A) A 
B) B 
C) C 
D) D 
E) E
F)F

Question 20

Which of the following conditions may be a contraindication for head CT?

Accepted Answer

A)  Epidural hematoma 
B)  Intracranial hemorrhage 
C)  Brain abscess 
D)  Sensitivity to iodinated contrast media 
A)  Epidural hematoma 
B)  Intracranial hemorrhage 
C)  Brain abscess 
D)  Sensitivity to iodinated contrast media

An undesired feature or density in the CT image not representative of anatomy is a(n):

Prospective electrocardiogram (ECG)gating used during cardiac CT permits the heart to be scanned:

Which one of the following pathologic indications for a head CT is directly related to trauma?

Glucose and oxygen are able to pass through the blood-brain barrier.

Typical slice thickness for a spine CT range is usually no greater than _____ mm.

Approximately ____ of all head CTs generally require intravenous contrast media.

Match each tissue with the correct CT number range.(Use each choice only once.) -Fat

CT colonography has eliminated the need for the patient undergoing a bowel prep.

MATCHING Select the correct lettered portion of the brain.(Use each choice only once.) -Midbrain

What is the chief disadvantage of CT colonography over conventional endoscopy?

What is the name of the deep fissure that separates the two cerebral hemispheres?

A collection of blood accumulating under the dura mater caused by trauma is termed:

Artifacts caused by patient motion are reduced with volume CT scanning as compared with earlier generation scanners.

The cerebrum is divided into five lobes.

Hemianopia is a condition defined as:

Match each tissue with the correct CT number range.(Use each choice only once.) -Lung tissue

Visual centers in the brain are located in the ____ lobe of the cerebrum.

What specifically do the CT detectors measure?

MATCHING Select the correct lettered portion of the brain.(Use each choice only once.) -Medulla

Which of the following conditions may be a contraindication for head CT?

Terminology, Positioning, and Imaging Principles

Chest

Abdomen

Upper Limb

Humerus and Shoulder Girdle

Lower Limb

Femur and Pelvic Girdle

Cervical and Thoracic Spine

Lumbar Spine, Sacrum, and Coccyx

Bony Thorax-Sternum and Ribs

Cranium, Facial Bones, and Paranasal Sinuses

Biliary Tract and Upper Gastrointestinal System

Lower Gastrointestinal System

Urinary System and Venipuncture

Trauma, Mobile, and Surgical Radiography

Pediatric Radiography

Angiography and Interventional Procedures

Special Radiographic Procedures

Diagnostic and Therapeutic Modalities

Filters

Exam 18: Computed Tomography

An undesired feature or density in the CT image not representative of anatomy is a(n):

Prospective electrocardiogram (ECG)gating used during cardiac CT permits the heart to be scanned:

Which one of the following pathologic indications for a head CT is directly related to trauma?

Glucose and oxygen are able to pass through the blood-brain barrier.

Typical slice thickness for a spine CT range is usually no greater than _____ mm.

Approximately ____ of all head CTs generally require intravenous contrast media.

Match each tissue with the correct CT number range.(Use each choice only once.) -Fat

CT colonography has eliminated the need for the patient undergoing a bowel prep.

MATCHING Select the correct lettered portion of the brain.(Use each choice only once.) -Midbrain

What is the chief disadvantage of CT colonography over conventional endoscopy?

What is the name of the deep fissure that separates the two cerebral hemispheres?

A collection of blood accumulating under the dura mater caused by trauma is termed:

Artifacts caused by patient motion are reduced with volume CT scanning as compared with earlier generation scanners.

The cerebrum is divided into five lobes.

Hemianopia is a condition defined as:

Match each tissue with the correct CT number range.(Use each choice only once.) -Lung tissue

Visual centers in the brain are located in the ____ lobe of the cerebrum.

What specifically do the CT detectors measure?

MATCHING Select the correct lettered portion of the brain.(Use each choice only once.) -Medulla

Which of the following conditions may be a contraindication for head CT?

Terminology, Positioning, and Imaging Principles

Chest

Abdomen

Upper Limb

Humerus and Shoulder Girdle

Lower Limb

Femur and Pelvic Girdle

Cervical and Thoracic Spine

Lumbar Spine, Sacrum, and Coccyx

Bony Thorax-Sternum and Ribs

Cranium, Facial Bones, and Paranasal Sinuses

Biliary Tract and Upper Gastrointestinal System

Lower Gastrointestinal System

Urinary System and Venipuncture

Trauma, Mobile, and Surgical Radiography

Pediatric Radiography

Angiography and Interventional Procedures

Special Radiographic Procedures

Diagnostic and Therapeutic Modalities

Filters