How to diagnose Kidney Stones in Children ?
The process of diagnosing any illness begins with consideration of the symptoms. Pain or bloody urine may be the first symptom. Urine, blood, and imaging tests will help determine whether symptoms are caused by a stone. Urine tests can be used to check for infection and for substances that form stones. Blood tests can be used to check for biochemical problems that can lead to kidney stones. Various imaging techniques can be used to locate the stone:
                
- Ultrasound uses a device, called a transducer, that bounces safe, painless sound waves off organs to create an image of their structure. An abdominal ultrasound can create images of the entire urinary tract. The procedure is performed in a health care providers office, outpatient center, or hospital by a specially trained technician, and the images are interpreted by a radiologista doctor who specializes in medical imaging; anesthesia is not needed. The images can show the location of any stones. This test does not expose children to radiation, unlike some other imaging tests. Although other tests are more useful in detecting very small stones or stones in the lower portion of the ureter, ultrasound is considered by many health care providers to be the best screening test to look for stones.  - Computerized tomography (CT) scans use a combination of x rays and computer technology to create threedimensional (3-D) images. A CT scan may include the injection of a special dye, called contrast medium. CT scans require the child to lie on a table that slides into a tunnel-shaped device where the x rays are taken. The procedure is performed in an outpatient center or hospital by an x-ray technician, and the images are interpreted by a radiologist; anesthesia is not needed. CT scans may be required to get an accurate stone count when children are being considered for urologic surgery. Because CT scans expose children to a moderate amount of radiation, health care providers try to reduce radiation exposure in children by avoiding repeated CT scans, restricting the area scanned as much as possible, and using the lowest radiation dose that will provide the needed diagnostic information.  - X-ray machines use radiation to create images of the childs urinary tract. The images can be taken at an outpatient center or hospital by an x-ray technician, and the images are interpreted by a radiologist; anesthesia is not needed. The x rays are used to locate many kinds of stones. A conventional x ray is generally less informative than an ultrasound or CT scan, but it is less expensive and can be done more quickly than other imaging procedures.