How is it possible for ct scans to miss kidney stones? i continue to pass fragments but only have stones in my kidneys according to my ct scan in june

CT: CT scans don't miss stones even stones that ultrasound or X-ray miss the ct picks the up. Patients can often pass "gravel" like and not have formed stones and this is not unusual. Often you can have passed a stone and get the ct and thus the scan is negative. The key in stones is prevention and urine metabolic work up is needed. Contact a kidney doc. Best of luck