Ahmad Bazrafshan

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In this paper a new technique for de-noising biomedical signals using wavelets is presented. In this method, genetic algorithm (GA) is combined with wavelet de-noising technique. According to input noisy biomedical signal, by using genetic algorithm, a wide range of filters will be tested and the best of them will be chosen. In the other words, a special(More)
We reported a 14 months old boy referred for evaluation of chylous ascites to our nuclear medicine department. Tc-99m Phytate was injected subcutaneously in his calves and whole body images as well as abdominal SPECT were performed. The SPECT images could localize an area of several intestinal lymphangiomata in the abdominal region. The abnormal region was(More)
Introduction: To evaluate main aspects of esophageal strictures in children. Materials and Methods: This cross-sectional study was performed on 43 cases of esophageal stenosis ranging from 1 month to 10 years of age who were admitted in Ghaem and Dr. Sheikh Hospitals from 1995 to 2003 in Mashhad, Iran. Results: Most cases were male (56%). The most common(More)
Accidental overdose of chemotherapy drugs including vinblastin (VBL) have been reported in the literature. As VBL overdose is potentially fatal, we decided to introduce a 2-year-old girl affected by langerhans' cell histiocytosis who was accidentally injected 10-times the prescribed dose of VBL (16 mg), and was saved with whole blood double exchange(More)
In this article , the authors introduce a case of Caroli’s Disease (CD) according to the results of ultrasonography (U.S), abdominal computed tomography (CT scan) and hepatic biopsy that has been manifested in the neonatal period. In the routine examination of the neonate, abdominal protrusion was noticed. Then milk intoterance, inability of meconium(More)
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