Person: HAKYEMEZ, BAHATTİN
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HAKYEMEZ
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BAHATTİN
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Publication Mr imaging in the detection of diffuse axonal injury with mild traumatic brain injury(Maney Publishing, 2008-11-01) Topal, Naile Bolca; Hakyemez, Bahattin; Erdoğan, Cüneyt; Bulut, Mehtap; Köksal, Özlem; Akköse, Şule; Doğan, Şeref; Parlak, Müfit; Özgüç, Halil; Korfalı, Ender; BOLCA TOPAL, NAİLE; HAKYEMEZ, BAHATTİN; Erdoğan, Cüneyt; Bulut, Mehtap; KÖKSAL, ÖZLEM; Akköse, Şule; DOĞAN, ŞEREF; PARLAK, MÜFİT; Özgüç, Halil; Korfalı, Ender; Tıp Fakültesi; Acil Tıp Ana Bilim Dalı; 0000-0002-3425-0740; 0000-0003-2271-5659; AAI-2327-2021; AAI-2318-2021; COE-1124-2022; AAX-5571-2021; AAK-8332-2020; JRG-1971-2023; AAI-6531-2021; AAG-8521-2021; FUL-4254-2022; FDB-4085-2022Purpose: To evaluate the occurrence and distribution of mild traumatic brain injury MTBI) caused by diffuse axonal injury DAI) using magnetic resonance MR) imaging and to attempt to correlate MR findings with post-concussion symptoms PCS).Patients and methods: Forty MTBI patients mean age: 32.5 years) with normal cranial computed tomography CT) findings were examined with standard MR protocol including T1-weighted, T(2)-weighted, fluid attenuated inversion recovery FLAIR), gradient echo GRE) and diffusion-weighted DW) sequences. MR imaging was performed within 24 hours of injury. The lesions were classified as DAI based on their location and morphologic appearance.Results: In MR imaging of five 12.5%) of the patients, the lesions compatible with DAI were observed. Four patients 10%) had the foci of low signal intensity compatible with hemorrhagic shear injury on the GRE sequence, and five 12.5%) patients had high signal intensity on FLAIR and DW sequence.Conclusion: MR imaging can be helpful in revealing DAI lesions in patients with normal CT scan findings after MTBI. FLAIR, GRE and DW sequences are superior to conventional spin-echo images in detecting DAI lesions. [Neurol Res 2008; 30: 974-978]Publication Analysis of predictive and preventive factors for access complications associated with vascular closure devices in complicated endovascular procedures(Springer, 2021-06-21) Gönen, Korcan Aysun; Hakyemez, Bahattin; Erdogan, Cuneyt; HAKYEMEZ, BAHATTİN; Erdoğan, Cüneyt; Tıp Fakültesi; Radyoloji Ana Bilim Dalı; 0000-0002-3425-0740; AAI-2318-2021; COE-1124-2022Purpose The main goal is to evaluate the effectiveness of angioseal and starclose vascular closure devices (VCDs) in high-risk patients under intensive anticoagulation who require therapeutic angiographic procedures and to discuss which factors are important in complications associated with VCDs. Materials and methods Medical records of the patients who underwent therapeutic complex interventional vascular procedures were reviewed retrospectively. One hundred sixty-six patients were divided into two groups regarding VCDs used for access-site closure after the procedure: group 1, (angioseal); group 2, (starclose). Data including patients' demographics and comorbidity information, procedural characteristics, and complications were analyzed. Results The device deployment success rate was 100%. For the procedural characteristics, there was no significant difference between the groups except access site (P = 0.016) and sheath size > 6F (P = 0.0001). No major complications had occurred in none of the patients. Minor complications including hematoma, access-site pain, and access-site infection, except prolonged hemostasis did not differ significantly between groups. The patients' demographic and periprocedural factors were not significantly correlated with the development of complications. Conclusion Contrary to published reports, our study showed that demographic and periprocedural factors may not be responsible for the vascular access-site complications associated with VCDs.Publication Evaluation of intracranial atherosclerotic disease risk factors in patients with acute ischemic stroke(Asean Neurological Assoc, 2023-12-01) DİNÇ, YASEMİN; MESUT, GİZEM; Özpar, Rıfat; Hojjati, Farid; HOJJATI, FARID; ÖZPAR, RİFAT; Bakar, Mustafa; HAKYEMEZ, BAHATTİN; BAKAR, HACI MUSTAFA; Tıp Fakültesi; Nöroloji Ana Bilim Dalı; 0000-0001-6649-9287; 0009-0006-2052-6335; IUQ-6999-2023Background & Objective: Intracranial atherosclerotic disease (ICAD) is a prevalent cause of ischemic stroke and is related to recurrent strokes. In this study, we aim to identify the ICAD rate and establish the risk factors in patients with acute ischemic stroke (AIS) in our population in Turkey. Methods: Eight hundred sixty-two patients diagnosed with AIS in our tertiary centre between 01-01.2019 and 01.01.2021 were retrospectively included in this study. Results: We detected ICAD in 172 ( 20%) patients. While the independent risk factors of anterior ICAD were hypertension and diabetes mellitus, the risk factors of posterior ICAD were advanced age, diabetes mellitus, hyperlipidaemia and vertebral artery hypoplasia. There were more frequent posterior ICAD. Conclusion: There was difference in the risk factors for anterior ICAD and posterior ICAD in this Turkish study.Publication Dissection of a non-bifurcating cervical carotid artery(Sage Publications Inc, 2016-06-01) NAS, ÖMER FATİH; Nas, Ömer Fatih; Karakullukçuoğlu, Zeynel; Hakyemez, Bahattin; HAKYEMEZ, BAHATTİN; Erdoğan, Cüneyt; Tıp Fakültesi; Radyoloji Ana Bilim Dalı; AAI-2318-2021; AAM-1388-2021; AAG-8561-2021A non-bifurcating cervical carotid artery is a rare anomaly in the population. Radiologic diagnosis of pathologies seen together with this anomaly can be challenging. Despite not being diagnostic all the time, digital subtraction angiography is accepted as the gold standard method for the diagnosis of dissection. We present a case of a non-bifurcating cervical carotid artery and concomitant dissection, which presented to the hospital with trauma and ischemic findings.Publication Evaluation of recurrent vertebral hydatid cyst with computed tomography myelography in a case with spinal instrumentation(Elsevier Science, 2015-11-01) Sanal, Bekir; Nas, Ömer Fatih; Büyükkaya, Ramazan; Hacıkurt, Kadir; Hakyemez, Bahattin; NAS, ÖMER FATİH; Hacıkurt, Kadir; HAKYEMEZ, BAHATTİN; Tıp Fakültesi; Radyoloji Ana Bilim Dalı; AAG-8561-2021; AAI-2318-2021; EWW-9360-2022Publication Evaluation of clinical, radiological, and demographic characteristics of juxtacortical hemorrhages in cerebral venous thrombosis(Türk Nöroloji Derneği, 2021-12-01) Dinç, Yasemin; Özpar, Rıfat; Bakar, Mustafa; Hakyemez, Bahattin; DİNÇ, YASEMİN; ÖZPAR, RİFAT; BAKAR, HACI MUSTAFA; HAKYEMEZ, BAHATTİN; Tıp Fakültesi; Nöroloji Ana Bilim Dalı; 0000-0001-6649-9287; 0000-0002-3425-0740; IUQ-6999-2023; AAH-5062-2021; EKN-8251-2022; AAI-2318-2021Objective: Cerebral venous thrombosis (CVT) is a rare form of cerebrovascular disease. Intracranial hemorrhage may occur in 40% of the patients with CVT. The morphology of the intracranial hemorrhages ranges from small juxtacortical hemorrhages (JH) to large parenchymal hematomas. Although it has been suggested that JH is a characteristic of CVT, studies examining the relationship between JH and CVT are limited. In this study, it was aimed to determine the clinical, radiological, and demographic characteristics of JH in patients with CVT.Materials and Methods: In this study, a total of 157 patients who were followed up with the diagnosis of CVT between 2015 and 2021 were included retrospectively. Patients were categorized as, those with and without JH. Variables associated with JH were determined by comparing the demographic, clinical, and radiological characteristics, CVT etiologies and clinical outcomes of the patients.Results: When the clinical, demographic, and radiological characteristics of the patients with and without JH were compared; female gender (p=0.037), clinical initial symptom (0.003), early superior sagittal sinus (SSS) thrombosis (p<0.001), venous collateral scale (VCS) (p<0.001), being in the postpartum period (p=0.006), development of intracranial herniation (p<0.001), and poor clinical outcome (p<0.001) were significantly related with JH. When the significant variables were evaluated with the binary logistic regression, the most significant and independent variables were found to be SSS thrombosis (p=0.043), cortical vein thrombosis (CoVT) (p=0.010), and seizures after CVT (p=0.004). By contrast, no relationships were found between the groups in terms of VCS in binary logistic regression.Conclusion: Diagnosis of CVT is possible with high clinical suspicion and correct interpretation of radiological imaging. JH could be detected with non-contrast cranial computed tomography, which is the first imaging modality, and may cause the clinician to suspect from SSS thrombosis and CoVT. More precise results could be obtained with the prospective multicenter studies.Publication Immune reconstitution inflammatory syndrome. A case of postpartum tuberculosis(Aves, 2006-08-01) KAZAK, ESRA; AKALIN, EMİN HALİS; HEPER, YASEMİN; Akalın, Halis; Gürcüoğlu, Emel; Yılmaz, Emel; YILMAZ, EMEL; HAKYEMEZ, BAHATTİN; Hakyemez, Bahattin; Coşkun, Funda; COŞKUN, NECMİYE FUNDA; Coşkun, Funda; Helvac, Safiye; Mistik, Reşit; Tıp Fakültesi; Radyoloji Ana Bilim Dalı; 0000-0001-7530-1279; 0000-0003-3604-8826; AAI-2318-2021; AAD-1271-2019; AAH-6506-2021; AAG-8459-2021; AAU-8952-2020Immunorestitution disease or immune reconstitution inflammatory syndrome was initially described in HIV/AIDS patients under antiretroviral therapy. Although there were a decrease in viral load, control of viral replication and an increase in CD4+ T lymphocyte counts, the appearance of different forms of opportunistic infections and deterioration in their clinical status were observed in these patients. This clinical deterioration is a result of an excessive inflammatory response against previously diagnosed or asymptomatic opportunistic pathogens or undefined antigens. Recently, this syndrome was defined in HIV- negative patients and in other cases such as development of paradoxical response during antituberculosis therapy. In this report we present a case with postpartum tuberculosis from the perspective of immunorestitution diseasePublication Rare use of twin solitaire® stents in the double waffle-cone technique for endovascular treatment of a wide-necked bifurcation aneurysm(Sage, 2015-04-01) Nas, Ömer Fatih; Kaçar, Emre; Kaya, Ahmet; Erdoğan, Cüneyt; Hakyemez, Bahattin; NAS, ÖMER FATİH; KAYA, AHMET TUFAN; Erdoğan, Cüneyt; HAKYEMEZ, BAHATTİN; Tıp Fakültesi; Radyoloji Ana Bilim Dalı; 0000-0002-8813-6513; 0000-0002-3425-0740; AAI-2318-2021; AAS-5392-2021; AAG-8561-2021; COE-1124-2022Endovascular treatment of wide-necked bifurcation aneurysms may be challenging. The waffle-cone technique can be used in these aneurysms in case of acute angulation between parent artery and distal artery of the aneurysm. Solitaire (R) stent (Ev3, Irvine, CA, USA) has the significant advantage of mitigating the potential complication risks. This study reports the second case in the literature in which endovascular treatment of a wide-necked bifurcation aneurysm with the double waffle-cone technique by using twin Solitaire (R) stents proved to be successful.Publication Preoperative endovascular embolization of orbital solitary fibrous tumor with 500-700 micron tris-acryl gelatin microspheres(Galenos Publ House, 2022-10-01) Muz, Ömer Ersin; Yazıcı, Bülent; Hakyemez, Bahattin; HAKYEMEZ, BAHATTİN; Yazıcı, Zeynep; YAZICI, ZEYNEP; Yalcinkaya, Ulviye; YALÇINKAYA, ÜLVİYE; Tıp Fakültesi; Patoloji Ana Bilim Dalı; 0000-0001-8889-1933; AAA-5384-2020; AAI-2318-2021; AAH-8924-2021; AAA-5384-2020; AAI-2303-2021The reported experience with preoperative embolization of solid orbital tumors is scarce. Herein, we present a case of a large and hypervascular orbital solitary fibrous tumor (SFT) in which 500-700 mu m tris-acryl gelatin microspheres (TAGM) were used for preoperative embolization. A 41-year-old man presented with severe proptosis, palpable mass, restrictive myopathy, exposure keratopathy, and compressive optic neuropathy in the right orbit. Magnetic resonance imaging showed a 65x35x35 mm, diffusely contrast-enhanced tumor in the superior orbit, extending to the apex, and multiple intratumoral vascular flow voids. A diagnosis of SFT was made by incisional biopsy. Endovascular tumor embolization was performed with 500-700 mu m TAGM. Two days later, the tumor was entirely removed with minimal bleeding. No embolization-or surgery-related complications and tumor recurrence or metastasis developed during the 42-month postoperative follow-up.Publication Association of brain volume and cognition in the chronic and episodic migraine patients(Sage Publications, 2013-06-01) Zarifoğlu, Mehmet; Şener, D. K.; Karlı, Nejdet; Hakyemez, Bahattin; Taşkapılıoğlu, Özlem; Özbek, Sevda Erer; Bakar, Mustafa; ZARİFOĞLU, MEHMET; Şener, D. K.; KARLI, HAMDİ NECDET; HAKYEMEZ, BAHATTİN; Taşkapılıoğlu, Özlem; ERER ÖZBEK, ÇİĞDEM SEVDA; BAKAR, HACI MUSTAFA; Tıp Fakültesi; Nöroloji Bölümü; 0000-0003-4436-3797; AAI-2318-2021; AAK-6623-2020; EHN-5825-2022; IOZ-7564-2023; CXD-7623-2022; DLN-1836-2022; EKN-8251-2022