Computed Tomography Exam Review
(Mosby's Third Edition) – Procedures
Exam Questions And Answers Latest
Update 2025
Components of a comprehensive CT stroke management protocol
typically include:
1. precontrast sequence of the brain
2. CT angiogram (CTA) of the brain and carotids
3. CT perfusion (CTP) of the brain
a. 2 only
b. 1 & 2 only
c. 2 & 3 only
d. 1, 2 & 3 -
correct answer ✅- Ans:
- d. 1, 2 & 3
- Found typically in the emergency setting, a comprehensive acute
stroke CT imaging protocol begins with a precontrast sequence to
evaluate for hemorrhage. After the IV administration of an
iodinated contrast agent, a CTA acquisition is then performed
through the carotid vessels and brain. CTP is then performed to
evaluate potential cerebral perfusion defects secondary to stroke.
Use fig (6.1) to answer questions 2-4.
Number 1 on the figure corresponds to which of the following?
,Computed Tomography Exam Review
(Mosby's Third Edition) – Procedures
Exam Questions And Answers Latest
Update 2025
a. left pulmonary artery
b. ascending aorta
c. inferior vena cava
d. descending aorta -
correct answer ✅- Ans:
- a. left pulmonary artery
Use fig (6.1) to answer questions 2-4.
Which number on the figure corresponds to the superior vena
cava?
a. 2
b. 3
c. 4
d. 5 -
correct answer ✅- Ans:
- c. 4
Use fig (6.1) to answer questions 2-4.
,Computed Tomography Exam Review
(Mosby's Third Edition) – Procedures
Exam Questions And Answers Latest
Update 2025
The abnormal density located in the posterior portion of the left
lung field on the figure has an average attenuation value of +5.0
HU. This density most likely represents:
a. pneumothorax
b. hemothorax
c. atelectasis
d. pleural effusion -
correct answer ✅- Ans:
- d. pleural effusion
- Pleural effusion are commonly seen in the posterior portion of the
lung field on images obtained with the patient in a supine position
on the CT table. Differentiation between pleural effusion and
pleural thickening is made when region of interest (ROI)
measurements reveal fluid with density readings at or slightly
above zero. Pleural effusion may be caused by multiple pathologic
processes, including infection, neoplasm, and congestive heart
failure.
Simple cysts of the kidney have average attenuation values in the
range of:
a. -40 to 0 HU
, Computed Tomography Exam Review
(Mosby's Third Edition) – Procedures
Exam Questions And Answers Latest
Update 2025
b. 0 to +20 HU
c. +30 to + 50 HU
d. above +60 HU -
correct answer ✅- Ans:
- b. 0 to +20 HU
- Simple cysts contain primarily water and therefore exhibit CT
numbers ranging from approximately 0 (or slightly below) to +20
Hounsfield units.
After initiation of rapid bolus administration of an iodinated
contrast agent, the arterial phase of hepatic contrast enhancement
occurs at approximately:
a. 15-20 sec
b. 25-35 sec
c. 60-70 sec
d. 120-180 sec -
correct answer ✅- Ans:
- b. 25-35 sec
- The arterial phase is the period of peak arterial enhancement
typically occurring at 25 to 35 seconds after the initiation of
(Mosby's Third Edition) – Procedures
Exam Questions And Answers Latest
Update 2025
Components of a comprehensive CT stroke management protocol
typically include:
1. precontrast sequence of the brain
2. CT angiogram (CTA) of the brain and carotids
3. CT perfusion (CTP) of the brain
a. 2 only
b. 1 & 2 only
c. 2 & 3 only
d. 1, 2 & 3 -
correct answer ✅- Ans:
- d. 1, 2 & 3
- Found typically in the emergency setting, a comprehensive acute
stroke CT imaging protocol begins with a precontrast sequence to
evaluate for hemorrhage. After the IV administration of an
iodinated contrast agent, a CTA acquisition is then performed
through the carotid vessels and brain. CTP is then performed to
evaluate potential cerebral perfusion defects secondary to stroke.
Use fig (6.1) to answer questions 2-4.
Number 1 on the figure corresponds to which of the following?
,Computed Tomography Exam Review
(Mosby's Third Edition) – Procedures
Exam Questions And Answers Latest
Update 2025
a. left pulmonary artery
b. ascending aorta
c. inferior vena cava
d. descending aorta -
correct answer ✅- Ans:
- a. left pulmonary artery
Use fig (6.1) to answer questions 2-4.
Which number on the figure corresponds to the superior vena
cava?
a. 2
b. 3
c. 4
d. 5 -
correct answer ✅- Ans:
- c. 4
Use fig (6.1) to answer questions 2-4.
,Computed Tomography Exam Review
(Mosby's Third Edition) – Procedures
Exam Questions And Answers Latest
Update 2025
The abnormal density located in the posterior portion of the left
lung field on the figure has an average attenuation value of +5.0
HU. This density most likely represents:
a. pneumothorax
b. hemothorax
c. atelectasis
d. pleural effusion -
correct answer ✅- Ans:
- d. pleural effusion
- Pleural effusion are commonly seen in the posterior portion of the
lung field on images obtained with the patient in a supine position
on the CT table. Differentiation between pleural effusion and
pleural thickening is made when region of interest (ROI)
measurements reveal fluid with density readings at or slightly
above zero. Pleural effusion may be caused by multiple pathologic
processes, including infection, neoplasm, and congestive heart
failure.
Simple cysts of the kidney have average attenuation values in the
range of:
a. -40 to 0 HU
, Computed Tomography Exam Review
(Mosby's Third Edition) – Procedures
Exam Questions And Answers Latest
Update 2025
b. 0 to +20 HU
c. +30 to + 50 HU
d. above +60 HU -
correct answer ✅- Ans:
- b. 0 to +20 HU
- Simple cysts contain primarily water and therefore exhibit CT
numbers ranging from approximately 0 (or slightly below) to +20
Hounsfield units.
After initiation of rapid bolus administration of an iodinated
contrast agent, the arterial phase of hepatic contrast enhancement
occurs at approximately:
a. 15-20 sec
b. 25-35 sec
c. 60-70 sec
d. 120-180 sec -
correct answer ✅- Ans:
- b. 25-35 sec
- The arterial phase is the period of peak arterial enhancement
typically occurring at 25 to 35 seconds after the initiation of
