Ct Boards Practice Questions

Front 1

Which CT Procedure requires Prothrombin Time (PT) and Partial Thromboplastin Time (PTT) laboratory results prior to starting the procedure?

Back 1

CT guided liver biopsy

Front 2

What type of contrast is often used to enhance CT images of the large intestines and the pelvic organs?

Back 2

Rectal contrast

Front 3

What adrenal pathology may precipitate a hypertensive crisis if IV contrast is utilized?

Back 3

Pheochromocytoma

Front 4

What process reduces the longest wave length photons creating a more monochromatic beam and reducing patient radiation dose?

Back 4

Filtration

Front 5

The development of what electromechanical device consisting of circular electrical conductive rings and brushes allowed for helical scanning capabilities?

Back 5

Slip rings

Front 6

What is the atomic number of Tungsten?

Back 6

74

Front 7

Bolus timing for Soft Tissue Neck CT's can be difficult due to many different structures enhancing at varied times. What contrast injection technique helps address the contradictory timing goals for imaging the neck?

Back 7

Split bolus

Front 8

What are the two phases of the Non-Equilibrium Phase utilized for Bi-Phasic studies of the pancreas and liver?

Back 8

Hepatic arterial and portal venous

Front 9

A routine liver abdomen CT is often scanned is one portal venous phase. What is an indication to scan the liver bi-phasic?

Back 9

Hyper-vascular lesions, Hepatic vascular anatomy, or Hemangiomas

Front 10

What is a typical mAs used in routine abdomen CT studies on an average sized patient?

Back 10

200-300 mAs

Front 11

Name the 8 things a technologist should do to educate and complete the patient screening

Back 11

1. Communicate - in a way the patient understands

2. Give clear and thorough explanation of procedure

3. Review Breathing instructions

4. Instruct patient to empty bladder for contrast

5. Discuss potential effects of contrast

6. Remove medal objects - or document

7. Ensure patient comfort

8. Ask if any concerns or allergies to contrast

Front 12

Types of nonabrasive tools to assist in comfort and decrease patient mobility

Back 12

Cushions, Straps, Safety Devices and medical tape, breath hold

Front 13

Breathhold is another form of patient immobilization required during CT scans. When are patients instructed to suspend respiration?

Back 13

At the end of inhalation or exhalation

Front 14

Cessation of breathing is used to _____ during CT imaging of the chest or abdomen.

Back 14

Reduce Motion

Front 15

6 Key points when obtaining Patient History/Assessment and monitoring.

Back 15

1. Obtain accurate and pertinent information

2. Proper Documentation of surgieries, symptoms, trauma

3. Non-leading or open-ended questions

4. Keen listening and encouragement

5. Focused questioning for additional information

6. Repeat and summarize information provided

Front 16

An average range for activated PTT is

Back 16

25-35 seconds

Front 17

What is the correct angle of insertion for placing a butterfly needle

Back 17

15 degrees

Front 18

What is the equation to determine flow rate

Back 18

mL/seconds

Front 19

CTDI describes what?

Back 19

The radiation dose to the patient during a CT scan

Front 20

While obtaining a history from a patient prior to a CT with contrast; what are two major questions to ask

Back 20

Any prior allergic reactions to contrast and history of asthma

Front 21

What factors affect a patients GFR?

Back 21

Age and Race

Front 22

What IV administration method provides the greatest overall plasma iodine concentration

Back 22

Bolus Technique