3 doctors weighed in:
Does a CT or ultrasound always show kidney stones?
3 doctors weighed in

1 doctor agrees
In brief: No
Ct and ultrasound does not "always" show kidney stones.
The resolution may not be sensitive enough to see very small stones less than 2 to 3 mm. Depending on the thickness of the images on the ct scan, a stone may be potentially missed between the images taken by the ct scanner. Ultrasound may also over-read or miss very small stones as well. Overall though, the detection rate is still very hi.

In brief: No
Ct and ultrasound does not "always" show kidney stones.
The resolution may not be sensitive enough to see very small stones less than 2 to 3 mm. Depending on the thickness of the images on the ct scan, a stone may be potentially missed between the images taken by the ct scanner. Ultrasound may also over-read or miss very small stones as well. Overall though, the detection rate is still very hi.
Dr. Moez Khorsandi
Dr. Moez Khorsandi
Thank
Dr. Tarek Naguib
Internal Medicine - Nephrology & Dialysis
1 doctor agrees
In brief: Yes
As limited by resolution.
Meaning a stone of and eighth of an inch may be difficult to see especially on ultrasound.

In brief: Yes
As limited by resolution.
Meaning a stone of and eighth of an inch may be difficult to see especially on ultrasound.
Dr. Tarek Naguib
Dr. Tarek Naguib
Thank
Get help from a real doctor now
Dr. William Forsythe
Board Certified, Emergency Medicine
23 years in practice
171K people helped
Continue
108,000 doctors available
Read more answers from doctors