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ARALAŞMAK, AYŞE

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Kurumdan Ayrılmıştır

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Tıp Fakültesi

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AYŞE

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ARALAŞMAK

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Now showing 1 - 10 of 23

Open Access
MRI and MR Spectroscopy Features of Heat Stroke: A Case Report
(2018-07-01) Yilmaz, TEMEL FATİH; Aralasmak, AYŞE; Toprak, HÜSEYİN; GULER, Serhat; Tüzün, Umit; Alkan, ALPAY; YILMAZ, TEMEL FATİH; ARALAŞMAK, AYŞE; TOPRAK, HÜSEYİN; ALKAN, ALPAY
Heat stroke is the outcome of over heat stress that results in multiorgan dysfunction with a tendency for central nervous system damage. Brain is very sensitive to hyperthermia, especially the cerebellum that has selective vulnerability to heat stroke. There is complex interaction between heat cytotoxicity, coagulation disorder, cytotoxine - mediated systemic inflammatory response causing multiorgan failure, metabolic derangement, and circulatory insufficiency. We reviewed the literature and discussed brain MRI and MR spectroscopy findings of heat stroke, detailed the pathophysiology underlying brain involvement and proposed excitotoxic injury as an alternative mechanism of brain damage in heat stroke.
Open Access
The Effect of Obesity on Brain Diffusion Alteration in Patients with Obstructive Sleep Apnea
(2014-01-01) KILICARSLAN, Rukiye; Alkan, ALPAY; Sharifov, RASUL; Akkoyunlu, MUHAMMED EMİN; Aralasmak, AYŞE; KOCER, Abdulkadir; KART, Levent; ALKAN, ALPAY; SHARIFOV, RASUL; AKKOYUNLU, MUHAMMED EMİN; ARALAŞMAK, AYŞE
Purpose: We investigated diffusion alterations in specific regions of the brain in morbid obese, obese, and nonobese OSA patients and searched whether there is a correlation between BMI and ADC values. Materials and methods: DWIs of 65 patients with OSA were evaluated. The patients were classified according to BMI as morbid obese (n = 16), obese (n = 27), and nonobese (control, n = 22) groups. ADC measurements were performed from 24 different regions of the brain in each patient. The relationship of BMI with ADC values was searched. Results: The ADC values in hypothalamus, insular cortex, parietal cortex, caudate nucleus, frontal white matter, and posterior limb of internal capsule were all increased in obese patients (n = 43) compared to control group. The ADC values of midbrain, hypothalamus, orbitofrontal cortex, and parietal cortex were significantly increased in morbid obese compared to obese patients. In obese patients, the degree of BMI was positively correlated with ADC values of orbitofrontal cortex, parietal cortex, and hypothalamus. Conclusion: We observed increasing brain vasogenic edema with increasing BMI, suggesting that the main reason of brain diffusion alteration in patients with OSA could be obesity related.
Open Access
PATIENT WITH INTERMITTENT POSTURE ABNORMALITY: AN ALEXANDER DISEASE CASE REPORT
(2019-06-01T00:00:00Z) İÇAĞASIOĞLU, Dilara Füsun; İŞCAN, AKIN; ARALAŞMAK, Ayşe; NURSOY, HATİCE; YEŞİL, Gözde; AYDIN, NİHAL; Sahin, Seyma Sonmez; İÇAĞASIOĞLU, DİLARA FÜSUN; İŞCAN, AKIN; ARALAŞMAK, AYŞE; NURSOY, HATİCE; YEŞİL, GÖZDE; AYDIN, NİHAL
Open Access
Investigation of Brain Impairment Using Diffusion-Weighted and Diffusion Tensor Magnetic Resonance Imaging in Experienced Healthy Divers.
(2018-11-17) SEYITHANOĞLU, MEHMET HAKAN; ABDALLAH, ANAS ABDELRAHIM SA; Dündar, TOLGA TURAN; KITIŞ, SERKAN; ARALAŞMAK, AYŞE; Gündağ, Papaker; SASANI, H; SEYİTHANOĞLU, MEHMET HAKAN; ABDALLAH, ANAS ABDELRAHıM SA; DÜNDAR, TOLGA TURAN; KİTİŞ, SERKAN; ARALAŞMAK, AYŞE; GUNDAG, MELİHA
Background: The aim of this study was to understand the changes of decompression illness in healthy divers by comparing diffusion-weighted (DWI) and diffusion tensor MRI findings among healthy professional divers and healthy non-divers with no history of diving. Material/Methods: A total of 26 people were recruited in this prospective study: 11 experienced divers with no history of neurological decompression disease (cohort) and 15 healthy non-divers (control). In all study subjects, we evaluated apparent diffusion coefficient (ADC) and type of diffusion tensor metric fractional anisotropy (FA) values of different brain locations (e.g., frontal and parieto-occipital white matter, hippocampus, globus pallidus, putamen, internal capsule, thalamus, cerebral peduncle, pons, cerebellum, and corpus callosum). Results: ADC values of hippocampus were high in divers but low in the control group; FA values of globus pallidus and putamen were lower in divers compared to the control group. DWI depicted possible changes due to hypoxia in different regions of the brain. Statistically significant differences in ADC values were found in hypoxia, particularly in the hippocampus (p=0.0002), while FA values in the globus pallidus and putamen were statistically significant (p=0.015 and p=0.031, respectively). We detected forgetfulness in 6 divers and deterioration in fine-motor skills in 2 divers (p=0.002 and p=0.17, respectively). All of them were examined using neuro-psychometric tests. Conclusions: Repeated hyperbaric exposure increases the risk of white matter damage in experienced healthy divers without neurological decompression illness. The hippocampus, globus pallidus, and putamen are the brain areas responsible for memory, learning, navigation, and fine-motor skills and are sensitive to repeated hyperbaric exposure
Open Access
One-year follow-up in patients with brainstem infarction due to large-artery atherothrombosis
(2015-01-01) Kolukisa, MEHMET; GUELTEKIN, Tugce Ozdemir; BARAN, Gozde Eryigit; Aralasmak, AYŞE; KOCAMAN, Guelsen; GUERSOY, Azize Esra; Asil, TALİP; KOLUKISA, MEHMET; ARALAŞMAK, AYŞE; GÜRSOY, AZIZE ESRA; ASİL, TALIP
Background: Posterior circulation infarction accounts for approximately 25% of the ischemic strokes. A number of different conditions may be associated with the development of brainstem infarction. Prognosis and recurrence rate of brainstem infarction due to large-artery atherothrombosis is still controversial. Methods: A total of 826 patients with ischemic stroke were admitted to our clinic during a 15-month period. Patients with clinical and radiological evidence of brainstem infarction were comprehensively assessed with appropriate vascular imaging modalities and for cardiological causes. Subjects with an established diagnosis of large-artery atherothrombosis were followed up for 1 year in terms of prognosis and recurrence rates. Results: Of the 101 patients with an established brainstem infarction, the diagnostic work-up indicated the presence of large-artery atherothrombosis as the causative factor in 53. A recurrent stroke was detected in the posterior circulation within the first 3 months in 5.8% and within 1 year in 9.8% of these individuals. The 1-year mortality rate was 11.7%. All patients with recurrent stroke had intracranial vascular narrowing at baseline. Conclusion: Our findings demonstrate a particularly high rate of recurrence and mortality at 1 year among patients who have a brainstem infarction due to intracranial arterial stenosis. Keywords: posterior circulation, intracranial arteries, extracranial arteries, stroke, vertebral artery, basilar artery
Open Access
An Unusual Localization of Intraosseous Schwannoma: The Hamate Bone.
(2017-02-23) Gurkan, VOLKAN; SONMEZ, C; ARALASMAK, AYŞE; YILDIZ, F; ERDOGAN, O; GÜRKAN, VOLKAN; ARALAŞMAK, AYŞE
Intraosseous schwannoma of the hamate bone presented in this case is a very rare benign tumor, and its diagnosis combined with clinical, imaging and needle biopsy is important to guide further therapy. The diagnosis of schwannoma of the hamate was proved histologically following its surgical treatment by curettage.
Open Access
Brain Diffusion Changes in Obstructive Sleep Apnoea Syndrome
(2013-01-01) Akkoyunlu, MUHAMMED EMİN; Kart, Levent; KILICARSLAN, Rukiye; Bayram, MEHMET; Aralasmak, AYŞE; Sharifov, RASUL; Alkan, ALPAY; AKKOYUNLU, MUHAMMED EMİN; BAYRAM, MEHMET; ARALAŞMAK, AYŞE; SHARIFOV, RASUL; ALKAN, ALPAY
Background: Obstructive sleep apnoea syndrome (OSAS) is a disorder characterized by repeated apnoeic episodes during sleep. Neurocognitive changes secondary to OSAS are likely to occur due to hypoxia in certain brain locations. Advances in magnetic resonance imaging technology, such as diffusion-weighted imaging (DWI), enable non-invasive and accurate identification of OSAS-induced changes. Objective: We aimed to use DWI to investigate changes in the brain secondary to hypoxia in OSAS. Methods: Eighty-eight patients underwent polysomnography and were classified as non-OSAS, mild-moderate OSAS and severe OSAS sufferers. DWI was used to evaluate 14 areas of the brain, and apparent diffusion coefficients (ADCs) were calculated. We investigated whether there were differences in the ADC values in specific areas of the brain between the non-OSAS and OSAS patients. Results: We measured the ADC values of the 68 newly diagnosed OSAS patients (21 mild, 15 moderate and 32 severe) and of 20 healthy controls. There were significant increases in the ADC values in the hippocampus, amygdala and putamen in OSAS patients. Compared to thenon-OSAS subjects, the ADC values of the putamen in severe OSAS patients, those of the hippocampus in moderate or severe OSAS patients and those of the amygdala in moderate OSAS patients were significantly increased. A negative correlation between the lowest oxygen saturation during sleep and the ADC values of the hippocampus and amygdala was found. Conclusions: Increased ADC levels in the hippocampus, amygdala and putamen in OSAS patients indicate hypoxia and likely cause vasogenic oedema in specific regions of the brain.
Open Access
Relationships of DTI findings with neurocognitive dysfunction in children with Type 1 diabetes mellitus
(2016-01-01T00:00:00Z) Toprak, Huseyin; Yetis, Huseyin; Alkan, Alpay; Filiz, Mekiya; Kurtcan, Serpil; Aralasmak, Ayse; Aksu, Mehmet S.; Cesur, Yasar; TOPRAK, HÜSEYİN; ALKAN, ALPAY; KURTCAN, SERPİL; ARALAŞMAK, AYŞE; CESUR, YAŞAR
Objective: To determine whether there were diffusion tensor imaging (DTI) changes in the brain among children with Type 1 diabetes mellitus (DM) and investigate the correlation between the fractional anisotropy (FA) and apparent diffusion coefficient (ADC) values and neurocognitive functions.
Open Access
Unusual sclerosing orbital pseudotumor infiltrating orbits and maxillofacial regions
(2014-05-01) TOPRAK, HÜSEYİN; ARALAŞMAK, AYŞE; YILMAZ, TEMEL FATİH; ÖZDEMİR, HÜSEYİN; TOPRAK, HÜSEYİN; ARALAŞMAK, AYŞE; YILMAZ, TEMEL FATİH; ÖZDEMİR, HÜSEYIN
Idiopathic orbital pseudotumor (IOP) is a benign inflammatory condition of the orbit without identifiable local or systemic causes. Bilateral massive orbital involvement and extraorbital extension of the IOP is very rare. We present an unusual case of IOP with bilateral massive orbital infiltration extending into maxillofacial regions and discuss its distinctive magnetic resonance imaging (MRI) features that help to exclude other entities during differential diagnoses.
Open Access
Severe Posterior Reversible Encephalopathy in Pheochromocytoma: Importance of Susceptibility-Weighted MRI
(2013-09-01) SERTER, Asli; Alkan, ALPAY; Aralasmak, AYŞE; KOCAKOC, Ercan; ALKAN, ALPAY; ARALAŞMAK, AYŞE
Pheochromocytoma is a rare cause of hypertension in children. Hypertension is one of the common reasons of posterior reversible encephalopathy. Intracerebral hemorrhage is a serious and unexpected complication of hypertensive encephalopathy due to pheochromocytoma, and very rarely seen in the childhood. Intracerebral hemorrhages should be searched if there are hypertensive reversible signal changes on the brain. Susceptibility weighted imaging (SWI) is a more sensitive method than conventional MRI when demonstrating cerebral microhemorrhagic foci. This is the first report of SWI findings on intracerebral hemorrhages in basal ganglia, brain stem and periventricular white matter due to hypertensive encephalopathy in a child with pheochromocytoma.