Is an bladder ultrasound/ not a ct scan sufficient enough to show if you have bladder stones in your bladder?

Yes: The ultrasound can actually show non-calcified stones that may be more difficult to see on ct. Plus, there is no radiation exposure to your ovaries!

Yes, if the scan is: Performed for that indication. You would need a dedicated bladder ultrasound, and it would be very good for finding bladder stones, including ones that are not calcified enough to see on ct. Added benefits - no radiation and less expensive test!