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Öğe Acceptable radiation leakage of microwave ovens on pregnant and newborn rat brains(1997) Inalöz S.S.; Daşdağ S.; Ceviz A.; Bilici A.The present article was intended to investigate the possible effects of the acceptable radiation leakage of microwave ovens on pregnant and new-born rat brains. Twenty-seven pregnant Wistar-albino rats were separated into three groups (n = 9), a control group (sham-exposed) and two experimental groups. The experimental gravid rats were confined in Plexiglas cages and placed next to the closed door of a microwave oven (power-output: 550 W). The NIR 15 (NIR: non-ionising radiation) group of gravid rats were exposed to the leakage of microwave ovens daily for 15 minutes whereas the NIR 30 group was exposed daily for 30 minutes during their pregnancies. The most striking changes were observed in the NIR 30 group of rats. Congestive vessels, edema and degenerative neurones were noticed in all experimental dams. Chronic inflammatory cell infiltrate, and focal necrosis of neurones were seen only in the NIR 30 group of dams. Progressive edema and conspicuous congestive vessels were seen in the offspring of both experimental groups. Chronic inflammatory cell infiltrate, haemorrhage, necrotic neural tissues, and degenerative neurones with a reactive glial proliferation were observed only in the offspring of the NIR 30 group.Öğe Cerebral hydatid disease: CT and MR imaging findings(SMW supporting association, 2004) Bükte Y.; Kemanoğlu S.; Nazaroğlu H.; Özkan Ü.; Ceviz A.; Şimşek M.Objective: Cerebral hydatid disease is very rare, representing only 2% of all cerebral space occupying lesions even in the countries where the disease is endemic. The aim of this paper is to describe the characteristic features of cerebral hydatid disease in computed tomography (CT) and magnetic resonance imaging (MRI). Methods. We retrospectively reviewed the CT and MR imaging findings of 18 patients with pathologically confirmed cerebral hydatid disease over a period of 13 years (1990-2002). Results: The study group consisted of 17 cases of Echinococcus granulosus and 1 case of Echinococcus multilocularis (alveolaris). They were 12 male (66.7%), and 6 female patients (33.3%), ages ranging from 7 to 50 years with an average age of 20.3 predominant symptoms. Papilloedema was present in 14 patients (77.7%). Common CT and MR imaging findings of E. granulosus lesions were well-defined, smooth thin-walled, spherical, homogeneous cystic lesions with no contrast enhancement, no calcification, and no surrounding oedema. The lesion seen with E. multilocularis was a well-defined multiseptated mass consisting of solid and cystic components with calcification in the solid portion. Cystic lesions with surrounding hyperintensity of perifocal oedema with complete or incomplete rim enhancement were seen in two patients, and were labeled as complicated and infected cysts. Conclusion: Although cystic cerebral hydatid disease is well demonstrated hy CT and MR examinations, CT is superior in detecting calcification in the cyst, when present, MR is better in demonstrating cyst capsule, detecting multiplicity and defining the anatomic relationship of the lesion with the adjacent structures, and it is more helpful in surgical planning.Öğe Effects of nimodipine on the cerebrovascular and neuronal changes during pneumococcal meningitis in the rat(Akademiai Kiado Rt., 1997) Hoşoglu S.; Ceviz A.; Serdar Kemaloglu M.; Sari I.; Inalöz S.; Geyik M.F.; Kökoglu Ö.F.It was investigated whether treatment with the calcium channels blocker Nimodipine, a 1,4-dihydropyridine derivative, influences vasculopathy and neuronal injury in experimental pneumococcal meningitis. Rats were randomly assigned to one of three experimental groups. The first group (Control group, n=20) was given saline (0.4 ml/day) intraperitoneally (ip), whereas the second group (group C, n=22) was treated only with ceftriaxone in a dosage of 30 mg/day/ip. The third group (group C-N, n=22) was treated with the combination of ceftriaxone 30 mg/day/ip, and nimodipine 0.6 mg/day/ip. Treatment was begun at the time of inoculation in all three groups. The control group was compared clinically and histopathologically with groups C and C-N at 24 h, three and six days after inoculation. Six rats in the control group and eight rats in group C and group C-N were sacrificed at 24 hours and seven rats in each group were sacrificed on the third and sixth day after inoculation. Clinically, there were no significant differences between group C and group C-N (p>0.05). There were significant differences between group C and group C-N for vasculopathy and neuronal injury (p<0.0001 and p<0.005, respectively). © 1997 Akadémiai Kiadó.Öğe Evaluation of traumatic falls(1992) Ariturk E.; Ceviz A.; Dokucu A.I.; Tosyali N.; Guzel A.; Aydin G.[No abstract available]Öğe Intradiploic meningioma with inward and outward extensions in a rheumatoid arthritis patient(2010) Er U.; Güzel A.; Tatli M.; Ceviz A.; Sav A.Background: Meningiomas usually arise from clusters of arachnoidal cap cells. Originating of a meningioma in an intraosseous region is rare condition. There are several theories about occurrence of these types of meningiomas. Here we report a case of an intradiploic meningioma in a rheumatoid arthritis patient and discuss the mechanism of developing intraosseous meningiomas, differential diagnosis of intraosseous lesions of calvarium, relations of rheumatoid arthritis and extensions of meningioma outside the diploe. Case description: A sixty three-year-old female patient who had been under the treatment for rheumatoid arthritis was admitted to the hospital with a swelling around her right eye. Bony window of preoperative CT showed an expansile right sphenoid bone lesion. The mass was excised with internal and external tables of the temporal bone by craniectomy. Conclusion: We advocate a wide resection, followed by cranioplasty with acrylic. If the subtotal resection is possible, residual lesion should be followed for adjuvant radiation therapy.Öğe Radicular compression due to herniated intradiscal gas(Turkish Neurosurgical Society, 1997) Ceviz A.; Bilici A.; Simsek M.A case in which epidural collection of gas compressed the left S1 nerve root and thecal sac, and produced symptoms and signs identical to those of a herniated nucleus pulposus is presented. Gas collection within the epidural space is demonstrated radiologically. The pathophysiology and management of an epidural collection of gas compressing nerve root and thecal sac are considered based on a review of the literature.
