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The Sacroiliac Joint Ratio. Determination of Normal Values.
MAŘÍK, Karel
Indices SI joint. Determination of normal values. The present thesis aims to establish normal values in adults without any pathological changes in the SI joint, LS spine and pelvis who are examined at the whole-body bone scintigraphy in the Department of Nuclear Medicine Hospital in Czech Budejovice. The SI joint is examined in patients with suspected inflammation in focusing on the joint activity with the whole-body scintigraphy of the skeleton. Then, using the ROI ratio, the ratio of the activity in the SI joint activity and the sacrum or L spine is calculated. The first hypothesis assumes that people without any pathology changes of the SI joint belong to the range of 1,0?1,4. To determine the normal values, a reference file was created based on data of people whose whole body scintigram showed no pathology in the LS spine and SI joint and without any clinical suspicions of SI joint inflammation. The people selected for this research had not suffered from Bechterew?s disease, pelvic trauma and LS spine, bearing altered bone metabolism in the LS spine or pelvis. Their age at the examination time ranged from 25 to 45 years. Applying the ROI technology, values were obtained from the areas of the right and left SI joint, from the L4 and os.sakrum to verify the second hypothesis. This hypothesis assumes that in order to determinate normal values in the SI joint it is better to make a comparison using os.sakrum than L4. Applying statistical calculations, normal values of the SI joint are determined from these areas. The values will assist in the diagnosis of inflammatory diseases of spine in patients who are examined at the scintigraphy in the Department of Nuclear Medicine Hospital in Czech Budejovice.
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