Computed Tomography Test 1 Questions with
Accurate Answers
A common site for the IV administration of iodinated contrast media is the
anterior recess of the elbow, otherwise known as the:
a. brachial fossa
b. Olecranon fossa
c. retro-ulnar space
d. antecubital space correct answer d. antecubital space
A CT gantry includes all of the following components except: correct answer A.
Collimators
B. Detectors
C. Central Processing Unit
D. Bow tie filters
A CT number of -1000 represents what? correct answer air
A CT number of 0 represents what? correct answer water
A CT number of 1000-3000 represents what? correct answer dense bone
A IV correct answer Flush the line with saline before and after injecting the IV
contrast
,Angiocatheter correct answer an IV catheter placed within a vein and used to
administer fluids, medication, and/or contrast media
Annotation correct answer How we mark the information
Artial Systole correct answer Contraction of the left and right atria
Corresponds to the onset of the P wave of the ECG
Attenuation correct answer The reduction of the intensity of a beam of radiation
as it passes through an object
-Some photons are absorbed, but others are scattered.
Beam Attenuation correct answer the degree to which an x-ray beam is reduce by
an object
the amount of x-ray photons that hit the detectors make up the shades of gray
Blood Coagulation correct answer Important we know the lab tests and values in
CT for invasive diagnostic procedures, or minor injuries
Blood Urea Nitrogen (BUN)
Creatinine level correct answer - lab values used to indicate renal function
BUN: Adults 7-25 mg/dL
Creatinine: 0.5-1.5 mg/dL
-You want to make sure that you have both of these to get an accurate lab value.
-If you only had the creatinine it would be accurate as well.
, Cardiac Cycle correct answer The series of blood flow-related events that occur
from the beginning of one heartbeat to that of the next.
Central Venous Catheters correct answer Common types of central venous
catheters are:
-Subclavian lines
-Implanted access ports: Portacath
-Peripherally inserted central catheters (PICC lines)
>> Delivers medications and fluids directly into the:
- Superior Vena Cava
- Inferior Vena Cava
- Right Atrium
Collimators
Pre-Patient
Post- Patient correct answer Helps to determine how thick the slice we take is
-Between the x-ray tube and the patient
-Between the patient and the detectors
Complete cardiac diastole correct answer Period of relaxation after the heart
contraction
Consists of ventricular diastole and atrial diastole
Corresponds to the T wave of the ECG
Components of the aseptic technique utilized for the IV administration of contrast
agents include:
Accurate Answers
A common site for the IV administration of iodinated contrast media is the
anterior recess of the elbow, otherwise known as the:
a. brachial fossa
b. Olecranon fossa
c. retro-ulnar space
d. antecubital space correct answer d. antecubital space
A CT gantry includes all of the following components except: correct answer A.
Collimators
B. Detectors
C. Central Processing Unit
D. Bow tie filters
A CT number of -1000 represents what? correct answer air
A CT number of 0 represents what? correct answer water
A CT number of 1000-3000 represents what? correct answer dense bone
A IV correct answer Flush the line with saline before and after injecting the IV
contrast
,Angiocatheter correct answer an IV catheter placed within a vein and used to
administer fluids, medication, and/or contrast media
Annotation correct answer How we mark the information
Artial Systole correct answer Contraction of the left and right atria
Corresponds to the onset of the P wave of the ECG
Attenuation correct answer The reduction of the intensity of a beam of radiation
as it passes through an object
-Some photons are absorbed, but others are scattered.
Beam Attenuation correct answer the degree to which an x-ray beam is reduce by
an object
the amount of x-ray photons that hit the detectors make up the shades of gray
Blood Coagulation correct answer Important we know the lab tests and values in
CT for invasive diagnostic procedures, or minor injuries
Blood Urea Nitrogen (BUN)
Creatinine level correct answer - lab values used to indicate renal function
BUN: Adults 7-25 mg/dL
Creatinine: 0.5-1.5 mg/dL
-You want to make sure that you have both of these to get an accurate lab value.
-If you only had the creatinine it would be accurate as well.
, Cardiac Cycle correct answer The series of blood flow-related events that occur
from the beginning of one heartbeat to that of the next.
Central Venous Catheters correct answer Common types of central venous
catheters are:
-Subclavian lines
-Implanted access ports: Portacath
-Peripherally inserted central catheters (PICC lines)
>> Delivers medications and fluids directly into the:
- Superior Vena Cava
- Inferior Vena Cava
- Right Atrium
Collimators
Pre-Patient
Post- Patient correct answer Helps to determine how thick the slice we take is
-Between the x-ray tube and the patient
-Between the patient and the detectors
Complete cardiac diastole correct answer Period of relaxation after the heart
contraction
Consists of ventricular diastole and atrial diastole
Corresponds to the T wave of the ECG
Components of the aseptic technique utilized for the IV administration of contrast
agents include:
