Deal of The Day! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU

ARDMS SPI Exam - Topic 3 Question 29 Discussion

Which factor will improve axial resolution?
B) Reducing the number of cycles per pulse
A) Increasing the focal zone
C) Changing the gray-scale map
D) Decreasing the frame rate

ARDMS SPI Exam - Topic 3 Question 29 Discussion

Actual exam question for ARDMS's SPI exam
Question #: 29
Topic #: 3
[All SPI Questions]

Which factor will improve axial resolution?

Show Suggested Answer Hide Answer
Suggested Answer: B

Comprehensive and Detailed Explanation From Exact Extract:

Axial resolution depends on spatial pulse length (SPL), which is determined by the number of cycles per pulse. Fewer cycles per pulse shorten the SPL, thereby improving axial resolution and allowing better separation of closely spaced structures along the beam axis.

According to sonography instrumentation reference:

''Axial resolution improves with fewer cycles per pulse, which decreases the spatial pulse length and allows better discrimination of structures along the beam path.''

Therefore, the correct answer is B: Reducing the number of cycles per pulse.

---


by Ashlee at Jun 30, 2026, 03:59 PM

Limited Time Offer

25%

Off

Get Premium SPI Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

0/2000 characters
Submit Cancel
Florinda
3 days ago
Wait, changing the gray-scale map doesn't affect resolution, right?
upvoted 0 times
...
Chu
8 days ago
I totally agree with that!
upvoted 0 times
...
Dusti
14 days ago
Reducing the number of cycles per pulse is key!
upvoted 0 times
...
Audry
19 days ago
Not sure about that, seems too simple to just reduce cycles.
upvoted 0 times
...
Myra
24 days ago
Increasing the focal zone actually helps too!
upvoted 0 times
...
Lakeesha
29 days ago
Wait, changing the gray-scale map doesn't affect resolution, right?
upvoted 0 times
...
Alida
1 month ago
I totally agree with that!
upvoted 0 times
...
Daniel
1 month ago
Reducing the number of cycles per pulse is key!
upvoted 0 times
...
Sheldon
1 month ago
Changing the gray-scale map seems unrelated to axial resolution, but I could be mistaken. I need to double-check that.
upvoted 0 times
...
Gwen
2 months ago
I practiced a similar question where reducing cycles was the right answer for better resolution. I hope that's the case here too!
upvoted 0 times
...
Lai
2 months ago
I remember something about the focal zone, but I can't recall if increasing it actually improves axial resolution or not.
upvoted 0 times
...
Elke
2 months ago
I think reducing the number of cycles per pulse might help with axial resolution, but I'm not entirely sure.
upvoted 0 times
...

Save Cancel