8 results on '"Ercan Karaarslan"'
Search Results
2. Third-Generation Dual-Source Computed Tomography for Coronary Angiography With Individually Tailored Scan Protocols Can Achieve a Low Radiation Dose With Good Image Quality in Unselected Patients
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Deniz Esin Tekcan Sanli, Cagdas Topel, Ercan Karaarslan, Yeliz Basar, Sila Ulus, Deniz Alis, and Tugana Akbas
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Male ,Coronary angiography ,medicine.medical_specialty ,business.industry ,Good image ,Middle Aged ,Coronary Angiography ,Radiation Dosage ,Coronary Vessels ,Third generation ,Quality (physics) ,Dual source computed tomography ,medicine ,Humans ,Radiographic Image Interpretation, Computer-Assisted ,Low dose ct ,Female ,Radiology, Nuclear Medicine and imaging ,Obesity ,Radiology ,Tomography, X-Ray Computed ,business ,Retrospective Studies - Abstract
To explore the image quality and radiation exposure associated with coronary angiography obtained with a third-generation dual-source computed tomography, using body mass index (BMI)- and heart rate (HR)-adapted protocols in real-world patients.Three scan protocols were implemented with regard to HR: prospective turbo high-pitch spiral, sequential, and retrospective spiral modes. We adapted the reference kilovoltage value according to BMI. Image quality was evaluated using a 4-point scale, and effective dose estimates were calculated using the dose-length product.Among the 896 patients, 417 (46.54%), 433 (48.32%), and 45 (5.02%) were imaged using prospective turbo high-pitch spiral, sequential, and retrospective spiral modes, respectively. The median BMI was 27.3 (25-30.4) kg/m2, and the effective dose was 0.65 mSv (interquartile range, 0.33-1.56 mSv). Only 32 of 896 examinations (3.5%) had poor image quality.Computed tomography angiography with BMI- and HR-tailored protocols offers good image quality with low radiation dose in unselected patients.
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- 2021
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3. Comparison of MRI, PSMA PET/CT, and Fusion PSMA PET/MRI for Detection of Clinically Significant Prostate Cancer
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Mustafa Bilal Tuna, Ercan Karaarslan, Yesim Saglican, Aydan Arslan, Ozan Ozisik, Ahmet Levent Guner, and Ali Riza Kural
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Male ,medicine.medical_treatment ,030218 nuclear medicine & medical imaging ,Lesion ,03 medical and health sciences ,Prostate cancer ,0302 clinical medicine ,Prostate ,Positron Emission Tomography Computed Tomography ,Image Interpretation, Computer-Assisted ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Aged ,Retrospective Studies ,PET-CT ,medicine.diagnostic_test ,Index Lesion ,business.industry ,Prostatectomy ,Prostatic Neoplasms ,Magnetic resonance imaging ,Middle Aged ,medicine.disease ,Magnetic Resonance Imaging ,medicine.anatomical_structure ,Positron emission tomography ,medicine.symptom ,Nuclear medicine ,business ,030217 neurology & neurosurgery - Abstract
Purpose The aim of our study is to compare the efficacy of positron emission tomography (PET) and magnetic resonance imaging (MRI) for detecting intraprostatic lesions in patients with clinically significant prostate cancer who underwent radical prostatectomy; additionally, investigate the benefits of rostate-specific membrane antigen (PSMA) PET-MR software fusion images to the diagnosis. Methods Thirty patients, who underwent radical prostatectomy between June 2015 and April 2018, were included in the study. Subjects with gallium PSMA PET-CT and multiparametric prostate MRI performed according to Prostate Imaging Reporting and Data System v2 criteria in our clinic were included in the study. 68Ga-PSMA PET-CT images were fused with MR sequences for analysis. Results The mean age of cases was 63.2 years (ranged from 45 to 79 years). Index lesions of 29 cases were detected by MRI and 22 of them by PET CT. Both modalities were found to be less sensitive for detection of bilaterality and multifocality (42.85% and 20% for MRI, 28.57% and 20% for PET CT, respectively). There was no statistically significant difference between modalities. It was observed that if a clinically significant tumor focus was not detected by MRI, it was small (6 mm or less) in diameter or had a low Gleason score. Conclusions Software fusion PSMA PET-MRI increased the sensitivity of the index lesion identification compared with PSMA PET-CT and also increased the sensitivity of real lesion size identification compared with multiparametric prostate MRI.
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- 2020
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4. Parieto-occipital alopecia in early infancy mandates cranial imaging
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Ecenur Tuc, Ibrahim Celik, Yasemin Alanay, and Ercan Karaarslan
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0301 basic medicine ,Pediatrics ,medicine.medical_specialty ,030105 genetics & heredity ,Pathology and Forensic Medicine ,Craniofacial Abnormalities ,03 medical and health sciences ,0302 clinical medicine ,Parieto-occipital alopecia ,Cerebellum ,Humans ,Medicine ,Abnormalities, Multiple ,Growth Disorders ,Genetics (clinical) ,business.industry ,Neurocutaneous Syndromes ,Skull ,Infant, Newborn ,Infant ,Alopecia ,General Medicine ,Early infancy ,Rhombencephalon ,Pediatrics, Perinatology and Child Health ,030221 ophthalmology & optometry ,Female ,Anatomy ,business - Published
- 2018
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5. Reliability of High-Pitch Ultra-Low-Dose Paranasal Sinus Computed Tomography for Evaluating Paranasal Sinus Anatomy and Sinus Disease
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Hasan Tanyeri, Ömer Faruk Ünal, Sila Ulus Özden, Elif Aksoy, and Ercan Karaarslan
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Adult ,Male ,medicine.medical_specialty ,Adolescent ,Ultra low dose ,Computed tomography ,Young Adult ,Paranasal Sinuses ,Sinus disease ,Paranasal Sinus Diseases ,High pitch ,medicine ,Humans ,Prospective Studies ,Reliability (statistics) ,Sinus (anatomy) ,Aged ,medicine.diagnostic_test ,business.industry ,Reproducibility of Results ,Mean age ,General Medicine ,Middle Aged ,Ethmoid Bone ,medicine.anatomical_structure ,Otorhinolaryngology ,Female ,Surgery ,Radiology ,Anatomic Landmarks ,Tomography, X-Ray Computed ,business - Abstract
The aim of this study was to evaluate the reliability of high-pitch ultra-low-dose computed tomography (CT) for detecting important paranasal sinus anatomic landmarks and pathologies.Sixty patients (22 females, 38 males) aged 15 to 67 years (mean age, 33.68 y; SD, 9.83 y) underwent high-pitch ultra-low-dose CT of the paranasal sinuses between February and June 2012. To determine the lowest possible dose for evaluation of the paranasal sinuses, the patients were divided into three groups randomly and prospectively. A different low-dose CT protocol was applied to each group. The image quality was assessed subjectively by a radiologist and an otorhinolaryngology head and neck surgeon independently using a 4-point grading scale (0 = structures could not be identified, 1 = indistinctly defined structures, 1.5 = relatively well-defined structures, 2 = very well-defined structures). Anatomic landmarks and mucosal structures were evaluated. Mean scores were evaluated to assess statistical significance.According to the anatomic landmark scoring, excluding the ethmoid foramen for ethmoid artery identification, all of the structures in all 3 groups were very well-defined structures. The ethmoid foramen for ethmoid artery identification was scored as either could not be identified or an indistinctly defined structure in all groups. On evaluating the mucosa of the paranasal sinuses, normal and pathologic mucosal structures were scored as very well defined in all of the patients. The interobserver agreement was excellent.High-pitch ultra-low-dose CT is a safe, reliable paranasal sinus screening tool.
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- 2014
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6. Recurrent Radiculopathy Caused by Epidural Gas After Spinal Surgery
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A. Fahir Ozer, Ali Cetin Sarioglu, Murat Cosar, Ercan Karaarslan, Mehdi Sasani, and Tunc Oktenoglu
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Epidural Space ,Male ,medicine.medical_specialty ,Spinal canal stenosis ,Postoperative Complications ,Lumbar ,Recurrence ,medicine ,Humans ,Orthopedics and Sports Medicine ,Radiculopathy ,Aged ,Lumbar Vertebrae ,medicine.diagnostic_test ,business.industry ,Intervertebral disc ,Magnetic resonance imaging ,Middle Aged ,medicine.disease ,Magnetic Resonance Imaging ,Epidural space ,Surgery ,Stenosis ,medicine.anatomical_structure ,Radicular pain ,Female ,Gases ,Neurology (clinical) ,Thecal sac ,Tomography, X-Ray Computed ,business ,Low Back Pain ,Intervertebral Disc Displacement - Abstract
Study design The article presents and discusses 4 cases in which symptomatic epidural gas developed after different surgeries on the lumbar spine. Objective To raise spinal surgeons' awareness of this potential problem. Summary of background data Vacuum phenomenon (gas accumulation in an intervertebral disc) is relatively common. Gas can also spontaneously enter and collect in the epidural space, but symptomatic epidural gas after spinal surgery is very rare. To date, only 5 such cases after lumbar surgery have been reported. Methods The primary disorders in the 4 new cases were disc extrusion at L2-L3 (Case 1), disc degeneration and herniation at L4-L5 (Case 2), stenosis of the lumbar spinal canal (Case 3), and disc herniation at L5-S1 with spinal canal stenosis (Case 4). The corresponding surgeries performed were L2-L3 microdiscectomy, L4-L5 microdiscectomy with instrumentation, right unilateral hemilaminotomy with complete instrumentation, and L5-S1 microdiscectomy. All 4 patients developed unexpected postoperative complaints of low back and radicular pain. Each was investigated with computed tomography and magnetic resonance imaging. The images revealed epidural gas collections compressing the thecal sac and/or nerve roots. Results Conservative management was effective in all but 1 case. In the latter case, computed tomography-guided needle aspiration was performed, but this did not resolve the problem. Surgery led to a favorable outcome, and follow-up lumbar computed tomography showed no epidural gas. Conclusion Epidural gas after lumbar surgery is very rare but can cause unexpected postoperative back or radicular pain. Combined computed tomography and magnetic resonance imaging should be used to identify the problem and rule out other disorders. Conservative treatment should be the first-line approach but surgery is often necessary if this does not resolve the problem.
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- 2007
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7. Cysts and Cyst-like Lesions of the Spine and Spinal Cord
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Mehran Midia, Arzu Arslan, Ercan Karaarslan, Mustafa Sirvanci, Gür Akansel, and Sinan Cakirer
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musculoskeletal diseases ,Marfan syndrome ,congenital, hereditary, and neonatal diseases and abnormalities ,medicine.diagnostic_test ,business.industry ,Magnetic resonance imaging ,Anatomy ,medicine.disease ,Spinal cord ,Spine (zoology) ,Cystic lesion ,medicine.anatomical_structure ,medicine ,Radiology, Nuclear Medicine and imaging ,Cyst ,business ,Myelography - Abstract
With the widespread use of magnetic resonance (MR), various cystic and cyst-like lesions of the spine and spinal cord are detected incidentally. Some cystic lesions are associated with congenital or developmental anomalies, mesenchymal dysplasias (eurofibromatosis type I, Marfan syndrome, an
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- 2004
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8. 2010 LOW DOSE DUAL ENERGY FLASH TOMOGRAPHY PROTOCOL FOR THE FOLLOW UP OF URETERAL STONES
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Ali Riza Kural, Burak Argun, Cengiz Bavbek, Ercan Karaarslan, Selcuk Keskin, Ahmet Z. Sahin, and Ilter Tufek
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Protocol (science) ,medicine.medical_specialty ,Flash (photography) ,Dual energy ,business.industry ,Urology ,Low dose ,medicine ,Radiology ,Tomography ,business - Published
- 2013
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