Podcast
Questions and Answers
During which phase of renal CT imaging is the renal cortex highly enhanced while the medulla remains poorly enhanced?
During which phase of renal CT imaging is the renal cortex highly enhanced while the medulla remains poorly enhanced?
- Excretory Phase
- Late Arterial (Cortico-medullary) Phase (correct)
- Nephrographic Phase
- Early Arterial Phase
What is the characteristic feature of the nephrographic phase in renal CT imaging?
What is the characteristic feature of the nephrographic phase in renal CT imaging?
- There is no contrast enhancement in either the cortex or medulla.
- The renal cortex shows minimal enhancement.
- The renal cortex and medulla exhibit similar degrees of contrast enhancement. (correct)
- The renal medulla is significantly more enhanced than the cortex.
Which of the following scan delay ranges is most appropriate for acquiring the nephrographic phase during renal CT imaging?
Which of the following scan delay ranges is most appropriate for acquiring the nephrographic phase during renal CT imaging?
- 10-30 seconds
- 45 seconds
- 90-200 seconds (correct)
- 3-15 minutes
Which phase of renal CT imaging is most valuable for evaluating the collecting system?
Which phase of renal CT imaging is most valuable for evaluating the collecting system?
What is the typical scan delay range (in minutes) for the excretory phase in renal CT imaging to achieve optimal opacification of the collecting system?
What is the typical scan delay range (in minutes) for the excretory phase in renal CT imaging to achieve optimal opacification of the collecting system?
If a renal CT scan is performed 60 seconds after contrast injection, which phase is most likely being imaged?
If a renal CT scan is performed 60 seconds after contrast injection, which phase is most likely being imaged?
A radiologist wants to optimize visualization of the renal collecting system. Which phase and scan delay would be most appropriate?
A radiologist wants to optimize visualization of the renal collecting system. Which phase and scan delay would be most appropriate?
In which phase of renal CT imaging would you expect to see the most distinct difference in contrast enhancement between the renal cortex and medulla?
In which phase of renal CT imaging would you expect to see the most distinct difference in contrast enhancement between the renal cortex and medulla?
A patient undergoes a renal CT scan. The images show that the renal cortex and medulla have almost identical levels of enhancement. Which phase of imaging does this finding correspond to?
A patient undergoes a renal CT scan. The images show that the renal cortex and medulla have almost identical levels of enhancement. Which phase of imaging does this finding correspond to?
During a renal CT scan, images acquired at 3 minutes post-contrast injection primarily reflect which phase?
During a renal CT scan, images acquired at 3 minutes post-contrast injection primarily reflect which phase?
Flashcards
Late Arterial (Cortico-Medullary) Phase
Late Arterial (Cortico-Medullary) Phase
Renal cortex is well enhanced, medulla is poorly enhanced.
Nephrographic Phase
Nephrographic Phase
Renal cortex and medulla exhibit a similar degree of contrast enhancement.
Excretory Phase
Excretory Phase
Used to evaluate the collecting system, with scan delay from 3-15 minutes.
Study Notes
- Late arterial (corticomedullary) phase: typically acquired after a 45-second delay.
- In the late arterial phase, the renal cortex is well-enhanced, while the medulla is poorly enhanced.
- Nephrographic phase: typically acquired after a 90-200 second delay.
- In the nephrographic phase, the renal cortex and medulla exhibit a similar degree of contrast enhancement.
- Excretory phase: the scan delay for optimal opacification of the collecting system is variable, ranging from 3-15 minutes (more than 200 seconds).
- The excretory phase is useful for evaluation of the collecting system.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
