week 14 physics- ch. 16 CT of the body

preinjection phase

A triphase study of the liver includes all of the following except: Select one: a. arterial phase. b. delayed phase. c. preinjection phase. d. venous phase.

supine

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

summon the radiologist for the examination.

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

pleurisy

CT of the lungs is useful in diagnosing the following abnormalities except: Select one: a. granulomas. b. lymphangitic carcinomas c. pleurisy. d. pulmonary embolism.

measuring bone strength

Computed tomographic imaging of bony tumors is useful in determining all of the following except: Select one: a. articular involvement. b. evaluating cortical integrity. c. measuring bone strength. d. tumor location in the bone.

spine

Computed tomographic imaging of skeletal trauma includes anatomical regions except the?

thin

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

measurement of bowel fluid

Computed tomographic imaging of the bowel for evaluation of bowel obstructions can demonstrate all of the following except: Select one: a. confirmation of obstruction. b. determination of the level of obstruction. c. measurement of bowel fluid. d. indication of possible vascular compromise.

invasive nature of acquiring images

Coronary artery studies present each of these challenges during computed tomographic angiography except: Select one: a. pronounced rapid motion. b. small size. c. tortuous course. d. invasive nature of acquiring images.

dissecting aneurysm

High-resolution CT (HRCT) is effective in evaluating all of the following except: Select one: a. asbestosis. b. dissecting aneurysm. c. idiopathic pulmonary fibrosis. d. silicosis.

determine surgery time

In CT, preoperative assessments of abdominal aortic aneurysms are performed for all of the following reasons except: Select one: 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.

hemothorax

In a trauma study of the liver, all of the following conditions can be demonstrated except: Select one: a. active hemorrhage. b. hematoma. c. hemothorax. d. lacerations.

lymph nodes

In patients with known or suspected bronchogenic carcinoma, computed tomography (CT) is used to determine the extent of invasion to all of the following except: Select one: a. chest wall. b. diaphragm. c. mediastinum. d. lymph nodes.

reduction of radiation dose

In the evaluation of renal calculi, advantages of a noncontrast CT over a conventional intravenous (IV) pyelogram include each of the following except: Select one: a. reduction of radiation dose. b. delineation of signs associated with obstruction. c. determination of stone size. d. determination of stone location.

left lower quadrant

Patients with diverticulitis will usually feel pain in the:

computed tomographic fluoroscopy

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

trauma CT

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

topogram

What is the digital localizing radiograph that usually begins a computed tomographic?

trauma

What is the most common indication for splenic imaging?

8

the adrenal glands are labeled:

1

the aorta is labeled:

1

the ascending aorta is labeled:

2

the duodenum is labeled:

1

the posts muscle is labeled:

descending aorta

the structure labeled as 2 is the:

inferior vena cava (IVC)

the structure labeled as 2 is the:

ureter

the structure labeled as 2 is the:

sigmoid colon

the structure labeled as 3 is the:

5

the superior mesenteric artery is labeled:

7

the trachea is labeled:

true

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

true

true/false: CT is superior to magnetic resonance imaging (MRI) for most clinical indications of the chest and abdomen.

false

true/false: Cardiac computed tomographic imaging has not proved successful in the evaluation of the coronary arteries.

true

true/false: HRCT is more sensitive than chest radiography for the detection of emphysema.

false

true/false: MRI demonstrates the pancreas better than CT does.

false

true/false: Proper use of IV contrast is not important for detecting masses in the liver.