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Dive into the research topics where Kamran Mahmutyazıcıoğlu is active.

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Featured researches published by Kamran Mahmutyazıcıoğlu.


Pediatric Radiology | 2004

Craniofacial differences according to AHI scores of children with obstructive sleep apnoea syndrome: cephalometric study in 39 patients

Hüseyin Özdemir; Remzi Altin; Ayhan Söğüt; Fikret Cinar; Kamran Mahmutyazıcıoğlu; Levent Kart; Lokman Uzun; Halit Davşancı; Sadi Gundogdu; Nazan Tomac

BackgroundCephalometry is useful as a screening test for anatomical abnormalities in patients with obstructive sleep apnoea syndrome (OSAS).ObjectiveTo evaluate comprehensively the cephalo metric features of children with OSAS, with or without adenotonsillar hypertrophy, and to elucidate the relationship between cephalometric variables and apnoea-hypopnoea index (AHI) severity.Materials and methodsThe study population consisted of 39 children, aged 4–12 years, with OSAS. Cephalometry was analysed using 11 measurements of the bony structures, their relationships and the size of the airways. Additionally, adenoid and tonsillar hypertrophy were graded.ResultsCranial base angles (BaSN and BaSPNS) were found to correlate with increasing levels of AHI scores (P<0.001). Protrusion of the maxilla (SNA) and mandible (SNB) did not correlate with AHI scores (P>0.05). The length of the mandibular plane (GnGo) and the minimal posterior airway space (MPAS) were inversely correlated with AHI scores (P<0.001). There was positive correlation between MPAS and GnGo (r=0.740, P<0.001), and negative correlation between MPAS and gonial angle (ArGoGn) (r=−0.541, P<0.001). There was significant correlation between cephalometric data and adenotonsillar hypertrophy concerning BaSN, BaSPNS, ArGoGn, GnGoH, BaN-GnGo, MPAS, GnGO and MPH (P<0.001).ConclusionsThere is significant correlation between cephalometric data and AHI score severity in children with OSAS. Adenotonsillar hypertrophy affects the cephalometric measurements adversely. The study clearly mandates the institution of early and effective therapy of adenotonsillar hypertrophy in children with OSAS.


European Radiology | 2005

Assessment of image quality of a standard and three dose-reducing protocols in adult cranial CT

Sadi Gundogdu; Kamran Mahmutyazıcıoğlu; Hiiseyin Özdemir; Ahmet Savranlar; Klyasettin Asil

The purpose of this study was to analyze the effect of various tube current settings (mAs) and optimize the image quality and dose for adult cranial CT protocol. Sixty adult patients who underwent a cranial CT scanning for different indications were subdivided into three subgroups. Subjective image and noise quality scores and quantitative noise measurements were selectively studied on three reference levels (cerebellar, basal ganglia and centrum semiovale levels). For each subgroup, only one level was studied. Head circumference (HC) and the maximum anteroposterior diameter (MAPD) of each patient were measured. At 50% decreased dose protocol, there was no poor quality score at any level. At nearly 60% decreased dose protocol, the incidence of poor quality scores was much higher at the cerebellar level than at the other two levels. For the same protocol number, quantitative noise measurements were higher at the cerebellar level than the other two supratentorial levels. The correlation was found to be significant between HC, MAPD and quantitative noise measurements, and there was a non-significant correlation between HC and subjective noise scores. In adult cranial CT, depending on the level, a dose reduction of up to 60% may be possible while maintaining image quality.


International Journal of Urology | 2004

Echinococcosis involving the liver, retrovesical and seminal vesicle presented with syncope

Tülay Özer; Sadi Gundogdu; Yetkin Ozer; Kamran Mahmutyazıcıoğlu; Ahmet Savranlar; Hüseyin Özdemir

Abstract  Hydatid disease of the urogenital system, especially of the retroperitoneum and seminal vesicles, is a very rare condition. We report a case of hydatid disease located in the liver, retrovesical region and seminal vesicle that was diagnosed incidentally while investigating the etiology of syncope. Transabdominal and transrectal ultrasonography revealed hypoecoic multicystic masses which had thin septations and walls in the liver, retrovesical region and seminal vesicle. Abdominal computed tomography examination showed multicystic low attenuation masses in the same region. Pelvic magnetic resonance image findings revealed multiple cystic masses in the retrovesical region and the right seminal vesicle. In conclusion, the diagnosis of hydatid disease should be kept in mind with patients who have cystic lesions in seminal vesicle and retrovesical region.


Diagnostic and interventional radiology | 2011

The benefit of expiratory-phase quantitative CT densitometry in the early diagnosis of chronic obstructive pulmonary disease.

Fahri Halit Besir; Kamran Mahmutyazıcıoğlu; Leyla Yilmaz Aydin; Remzi Altin; Kıyasettin Asil; Sadi Gundogdu

PURPOSE We aimed to compare the inspiratory and expiratory quantitative computed tomography (CT) densitometric data of healthy volunteers, individuals with chronic obstructive pulmonary disease (COPD) risk, and COPD patients to aid in the early diagnosis of COPD. MATERIALS AND METHODS Of the study patients, 14 were healthy volunteers (Group I), 12 were patients at risk for COPD (Group II), and 13 were COPD patients (Group III). The high-resolution CT was performed at three levels (the upper, middle, and lower parts of the lungs). All images were evaluated with a specific program for the segmentation of pulmonary parenchyma. The mean lung density (MLD) was measured, and the emphysema index (EI) was calculated using this program. RESULTS Both MLD values and calculated EI ratios showed significant differences between Groups I and III, and Groups II and III in both expiratory and inspiratory phases (P < 0.05). However, in the comparison of healthy volunteers and patients at risk for COPD (Group I and II), only expiratory-phase MLD values showed statistically significant difference (P < 0.001). CONCLUSION In patients at risk for COPD, expiratory-phase MLD measurements can be used as an early diagnostic method.


Journal of Clinical Ultrasound | 2005

Evaluation of carotid artery wall thickness with high-resolution sonography in obstructive sleep apnea syndrome

Remzi Altin; Hüseyin Özdemir; Kamran Mahmutyazıcıoğlu; Levent Kart; Lokman Uzun; Tülay Özer; Ahmet Savranlar; Mustafa Aydin


Acta Ophthalmologica Scandinavica | 2005

The effects of sildenafil on ocular blood flow

Murat Koksal; Hüseyin Özdemir; Sebnem Kargi; Cetin Yesilli; Sühan Tomaç; Kamran Mahmutyazıcıoğlu; Aydin Mungan


Diagnostic and interventional radiology | 2005

Evaluation of the hippocampus and the anterior cingulate gyrus by proton MR spectroscopy in patients with post-traumatic stress disorder

Kamran Mahmutyazıcıoğlu; Numan Konuk; Huseyin Ozdemir; Nuray Atasoy; Levent Atik; Sadi Gundogdu


European Journal of Radiology | 2004

Comparison of chest radiography and high-resolution computed tomography findings in early and low-grade coal worker's pneumoconiosis.

Ahmet Savranlar; Remzi Altin; Kamran Mahmutyazıcıoğlu; Hüseyin Özdemir; Levent Kart; Tülay Özer; Sadi Gundogdu


Journal of Clinical Ultrasound | 2004

Migration of an intrauterine contraceptive device to the ovary.

Hüseyin Özdemir; Kamran Mahmutyazıcıoğlu; H. Alper Tanrıverdi; Sadi Gundogdu; Ahmet Savranlar; Tülay Özer


Journal of Clinical Ultrasound | 2003

Pseudoaneurysm of the dorsalis pedis artery: Color Doppler sonographic and angiographic findings

Hüseyin Özdemir; Kamran Mahmutyazıcıoğlu; Mehmet Özkökeli; Ahmet Savranlar; Tülay Özer; Fatma Demirel

Collaboration


Dive into the Kamran Mahmutyazıcıoğlu's collaboration.

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Hüseyin Özdemir

Zonguldak Karaelmas University

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Sadi Gundogdu

Zonguldak Karaelmas University

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Ahmet Savranlar

Zonguldak Karaelmas University

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Remzi Altin

Zonguldak Karaelmas University

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Tülay Özer

Zonguldak Karaelmas University

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Levent Kart

Zonguldak Karaelmas University

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Lokman Uzun

Zonguldak Karaelmas University

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H. Alper Tanrıverdi

Zonguldak Karaelmas University

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Halit Davşancı

Zonguldak Karaelmas University

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