Deck 18: Computed Tomography of the Body

Question 1

Computed tomography is the primary method for pelvic assessment.

Answer 1

False

Question 2

A triphase study of the liver includes all of the following except:

A)arterial phase
B)delayed phase
C)preinjection phase
D)venous phase

Answer 2

preinjection phase

Question 3

Biphasic or triphasic examinations of the pancreas are helpful when searching for potential solid lesions.

Answer 3

True

Question 4

In a trauma study of the liver, all of the following conditions can be demonstrated except:

A)active hemorrhage
B)hematoma
C)hemothorax
D)lacerations

Question 5

What is the most common indication for splenic imaging?

A)arterial stenosis
B)carcinomas
C)lymphoma
D)trauma

Question 6

If the patient has had a recent barium study, sufficient time should be allowed for elimination of the contrast medium.

Question 7

Computed tomographic imaging of the bowel for evaluation of bowel obstructions can demonstrate all of the following except:

A)confirmation of obstruction
B)determination of the level of obstruction
C)measurement of bowel fluid
D)indication of possible vascular compromise

Question 8

Cardiac computed tomographic imaging has not proved successful in the evaluation of the coronary arteries.

Question 9

Computed tomography is superior to magnetic resonance imaging for most clinical indications of the chest and abdomen.

Question 10

Coronary artery studies present a challenge during computed tomographic angiography because of: I. pronounced rapid motion
II) small size
III) tortuous course

A)I and II
B)II and III
C)I and III
D)I, II, and III

Question 11

An indication for computed tomographic scanning of the chest is lymphadenopathy in patients with suspected bronchogenic carcinoma, lymphoma, or other malignancies.

Question 12

Computed tomography is better than ultrasonography in determining intrahepatic and extrahepatic bile ducts in jaundiced patients.

Question 13

High-resolution computed tomography is more sensitive than chest radiography for the detection of emphysema.

Question 14

What classification of chest computed tomography can best diagnose conditions such as pulmonary lacerations, hemothorax, and pneumothorax?

A)high-resolution computed tomography
B)lung computed tomography
C)screening computed tomography
D)trauma computed tomography

Question 15

High-resolution computed tomography is effective in evaluating all of the following except:

A)asbestosis
B)dissecting aneurysm
C)idiopathic pulmonary fibrosis
D)silicosis

Question 16

In patients with known or suspected bronchogenic carcinoma, computed tomography is used to determine the extent of invasion to the: I. chest wall
II) diaphragm
III) mediastinum

A)I and II
B)II and III
C)I and III
D)I, II, and III

Question 17

Magnetic resonance imaging demonstrates the pancreas better than computed tomography does.

Question 18

The purpose of oral contrast agents is to opacify the gastrointestinal tract.

Question 19

Proper use of intravenous contrast is not important for detecting masses in the liver.

Question 20

Computed tomography of the lungs is useful in diagnosing the following abnormalities except:

A)granulomas
B)lymphangitic carcinomas
C)pleurisy
D)pulmonary embolism

Question 21

Please match the following Hounsfield units (HU) and fluids. Answer selections will be used only once.

25-50 HU

A)Clotted blood
B)Extravasated contrast
C)Ascites, bile, urine, or bowel contents
D)Unclotted blood

Question 22

Please match the following Hounsfield units (HU) and fluids. Answer selections will be used only once.

85-350 HU

A)Clotted blood
B)Extravasated contrast
C)Ascites, bile, urine, or bowel contents
D)Unclotted blood

Question 23

Abdomen and pelvis scans are commonly obtained with the patient in a _________ position.

A)left lateral
B)right lateral
C)prone
D)supine

Question 24

The ascending aorta is labeled:

A)1
B)2
C)5
D)7

Question 25

Please match the following Hounsfield units (HU) and fluids. Answer selections will be used only once.

5-10 HU

A)Clotted blood
B)Extravasated contrast
C)Ascites, bile, urine, or bowel contents
D)Unclotted blood

Question 26

The structure labeled as 2 is the:

A)ascending aorta
B)descending aorta
C)esophagus
D)superior vena cava

Question 27

All of the following should be performed by the technologist before the examination except:

A)explain the examination to be performed
B)explain the use of the contrast media
C)have the patient empty the bladder
D)summon the radiologist for the examination

Question 28

Computed tomographic imaging of bony tumors is useful in determining all of the following except:

A)articular involvement
B)evaluating cortical integrity
C)measuring bone strength
D)tumor location in the bone

Question 29

The aorta is labeled:

A)1
B)2
C)3
D)4

Question 30

The trachea is labeled:

A)1
B)2
C)4
D)7

Question 31

Computed tomographic imaging of the adrenal glands is easy and reliable, except when the patient is extremely _________.

A)dehydrated
B)obese
C)thin
D)young

Question 32

The introduction of___________ enhanced the capability of determining the exact location of needle placement.

A)computed tomographic angiography
B)computed tomographic fluoroscopy
C)computed tomographic screening
D)quantitative computed tomography

Question 33

Please match the following Hounsfield units (HU) and fluids. Answer selections will be used only once.

40-75 HU

A)Clotted blood
B)Extravasated contrast
C)Ascites, bile, urine, or bowel contents
D)Unclotted blood

Question 34

Computed tomographic examinations usually begin with a digital localizing radiograph, also known as a: I. scanogram
II) scout view
III) topogram

A)I and II
B)II and III
C)I and III
D)I, II, and III

Question 35

Computed tomographic imaging of skeletal trauma includes anatomical regions of the: I. ankle
II) pelvis
III) shoulder

A)I and II
B)II and III
C)I and III
D)I, II, and III

Question 36

Patients with diverticulitis will usually feel pain in the:

A)right upper quadrant
B)right lower quadrant
C)left upper quadrant
D)left lower quadrant

Question 37

In the evaluation of renal calculi, advantages of a noncontrast computed tomography over a conventional intravenous pyelogram include: I. delineation of signs associated with obstruction
II) determination of stone size and location
III) reduction of radiation dose

A)I and II
B)II and III
C)I and III
D)I, II, and III

Question 38

In computed tomography, preoperative assessments of abdominal aortic aneurysms are performed for all of the following reasons except:

A)assess the iliac arteries
B)determine the relationship between the aneurysm and the renal arteries
C)determine surgery time
D)precisely size the entire aneurysm

Question 39

The adrenal glands are labeled:

A)3
B)4
C)5
D)8

Question 40

The structure labeled as 2 is the:

A)aorta
B)hepatic artery
C)inferior vena cava
D)portal vein