MAGNETIC RESONANCE SPECTROSCOPY IN EVALUATION OF NEUROPSYCHIATRIC SYSTEMIC LUPUS ERYTHEMATOSUS Serum Soluble CD 163 and its relation to various disease parameter in patients with systemic sclerosis The implication of tissue Doppler echocardiography and cardiopulmonary exercise in early detection of cardiac dysfunction in systemic lupus erythematosus patients Potential role of calprotectin as a monitoring biomarker for clinical, sonographic activity and treatment outcome in recent onset rheumatoid arthritis Validity of Doppler subclinical synovitis as an activity marker associated with bone erosions in rheumatoid arthritis patients during clinical remission Prevalence and clinical significance of non-organ specific antibodies in patients with autoimmune thyroiditis as predictor markers for rheumatic diseases