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Öğe The 2D and 3D MR arthrographic description of aponeurotic expansion of supraspinatus tendon and biceps tendon anomaly in a large patient cohort(Springer, 2024) Guclu, Derya; Ogul, Hayri; Unlu, Elif Nisa; Tuncer, Kutsi; Kose, Mehmet; Kantarci, Mecit; Eren, SuatObjectiveTo describe the aponeurotic expansion of supraspinatus tendon (AEST) and biceps tendon abnormalities with magnetic resonance (MR) arthrographic examinations and determine their prevalence in patients, we performed a high-resolution 3D direct MR arthrography.Materials and methodsThis was a retrospective study of 700 shoulder MR arthrograms performed between May 2010 and January 2022. Extension in the coronal plane of an AEST on 3D fat-suppressed T1-weighted volumetric interpolated breath-hold examination (VIBE) MR arthrography was identified. Based on its morphology, the AEST on MR arthrography was divided into four subtypes: absence of tendinous thickness in the bicipital synovial surface or intra-synovial tendon-like structure in the bicipital groove, thin and flat tendinous thickness & GE;1 mm of bicipital synovium, oval tendinous structure less than half the size of the adjacent biceps tendon, oval tendinous structure more than half the size of the adjacent biceps tendon, and oval tendinous structure larger than the adjacent biceps tendon. Based on its origin and termination, aponeurotic expansions can be divided into three subtypes: proximal pulley zone, middle humeral neck zone, and distal myotendinous junction zone. Association with the biceps synovium of the AEST was categorized into three types: intra-synovial, extra-synovial, and trans-synovial.ResultsAn AEST in the anterior shoulder joint in 3D VIBE MR arthrography images was identified in 63 (9%) of 700 arthrograms. The most common arthrographic type of AEST was type 1-this was detected in 39 of 63 patients. The most common course type of the AEST was anteriorly midline. The most common distal insertion type was at the tenosynovial sheath of the long head of the biceps tendon (LHBT) in the middle humeral neck zone-this was detected in 31 of 63 patients. There were only 10 MR arthrograms biceps tendon abnormality, including 4 biceps agenesis and 6 split ruptures.ConclusionA 2D and high-resolution 3D MR arthrography can demonstrate the anatomical detail around the bicipital groove and facilitate the differentiation between a biceps tendon anomaly and an AEST. On high-resolution 3D MR arthrographic images, the AEST tends to be in the anterior midline and anteromedial portions of the biceps synovium with intra-synovial, extra-synovial, and trans-synovial courses and its three different insertion types.Öğe The 2D and 3D MR arthrographic description of aponeurotic expansion of supraspinatus tendon and biceps tendon anomaly in a large patient cohort (Jul, 10.1007/s00256-023-04409-1, 2023)(Springer, 2024) Guclu, Derya; Ogul, Hayri; Unlu, Elif Nisa; Tuncer, Kutsi; Kose, Mehmet; Kantarci, Mecit; Eren, Suat[No abstract available]Öğe Abnormal progression of brain herniation into intraosseous arachnoid granulation in a patient with metastatic lung carcinoma(Springer Heidelberg, 2024) Ogul, Hayri; Ay, Mutlu[No abstract available]Öğe Agenesis of Common Carotid Artery: Unusual Vascular Anomaly of the Neck(Sage Publications Inc, 2023) Ogul, Hayri; Gozgec, Elif; Kantarci, Mecit[No abstract available]Öğe Anomalous origin of the temporopolar artery from the internal carotid artery and aneurysms at the temporopolar and internal carotid arteries: a very rare case report(Springer France, 2023) Ay, Mutlu; Ogul, Hayri; Kantarci, MecitThe temporopolar artery (TPA) originates directly from the sphenoidal segment of the middle cerebral artery (MCA). Its originating from the M1 segment of the MCA as a branch of the anterior temporal artery is not uncommon. However, internal carotid artery origination is a very rare variation of the TPA. Here, we report a very rare case of the variant origin of the TPA and the presence of saccular aneurysm at this origin.Öğe Aponeurotic Expansion as a Cause for Rotator Cuff Tears but Full Joint Movements in Patients: Magnetic Resonance Arthrography Images of Aponeurotic Expansion and the Clinical Situation(Springernature, 2024) Uludag, Veysel; Guclu, Derya; Karaduman, Zekeriya Okan; Ogul, HayriThis case report presents the detailed clinical and radiological findings of a 63-year-old male patient who presented with right shoulder pain. Magnetic resonance imaging (MRI) and magnetic resonance arthrography (MRA) revealed significant tears in most of the rotator cuff muscles. Despite these findings, the patient was able to perform full shoulder movements, suggesting that aponeurotic expansion may play a crucial role in this scenario. This case highlights important clinical findings that could lead to potential changes in shoulder surgery and rehabilitation approaches.Öğe Assessment of the involvement of the inferior glenohumeral capsuloligamentous complex in frozen shoulder using shear wave elastography: a study with MRI correlation(Oxford Univ Press, 2025) Soylu, Hakan Huseyin; Unlu, Elif Nisa; Guclu, Derya; Ogul, Hayri; Sungur, Mehmet Ali; Temel, Mustafa HuseyinObjectives This study aimed to evaluate the efficacy of shear wave elastography (SWE) as a diagnostic tool for frozen shoulder (FS). Methods Thirty patients with FS and 34 healthy volunteers were included in the study. Patients with clinical findings consistent with FS and whose MRI results were indicative of FS were included. SWE was performed on these patients, measuring stiffness in the anterior band of the inferior glenohumeral capsuloligamentous complex (IGHCC) using the Virtual Touch Quantification elastography method. Stiffness values were expressed as shear wave velocity (SWV) in meters per second, and statistical analyses were performed to compare stiffness values between the FS and control groups. Results Significant differences in SWV values were observed between the FS and the control groups (P < .001). Additionally, a significant interaction between group and gender was observed (P = .007) based on a 2-way analysis of variance. Conclusion SWE revealed significant stiffening of the IGHCC in FS patients compared to controls, demonstrating its practicality and reliability as an imaging method alongside MRI for assessing IGHCC involvement in FS patients. Advances in knowledge SWE may serve as an alternative imaging method for diagnosing and monitoring FS.Öğe Atypical articulation of the cervical rib and first rib(Springer India, 2024) Senocak, Eyup; Tuncer, Kutsi; Aydin, Yener; Ogul, HayriThe cervical rib is an additional rib arising from the transverse process of the seventh cervical vertebra. This rib may terminate free in soft tissue or may be attached to the first rib. The cervical rib is a congenital anomaly that occurs in less than 1% of the general population and sometimes causes severe symptoms of thoracic outlet syndrome. Hereby, we report a 13-year-old boy with an atypical articulation between the left seventh cervical rib and the left first thoracic rib.Öğe Bilateral Epineurial Pseudocyst of Intratemporal Facial Nerve(Sage Publications Inc, 2024) Gozgec, Elif; Ogul, Hayri; Sakat, Muhammed Sedat[No abstract available]Öğe A Case of Giant Retropharyngeal Lipoma Causing Airway Obstruction(Sage Publications Inc, 2024) Gozgec, Elif; Ogul, Hayri[No abstract available]Öğe A Case of Pulmonary and Central Nervous System Invasive Aspergillosis with Characteristic Radiological Findings(Soc Turkish Intensivists - Sti, 2024) Akbas, Turkay; Karahan, Fatih; Ogul, Hayri; Onec, Birgul; Onmez, Attila; Unlu, Nisa; Balbay, Ege GulecCentral nervous system invasive aspergillosis is a rare fatal infection responsible for the majority of brain lesions in immunocompromised patients. A 56-year-old man with diabetes mellitus and non-Hodgkin's lymphoma was admitted to the emergency department with a diagnosis of pneumonia-related sepsis. At presentation, cranial computed tomography (CT) and magnetic resonance imaging were normal, but thoracic CT revealed right lung pneumonia, and antibiotic therapy was initiated. Control CT scans performed on the 13th day of admission because the patient had subsequently become hypotensive and somnolent revealed halo signs in the lungs and multiple hypodense lesions within the cerebrum, consistent with invasive aspergillosis. A post-contrast cranial CT scan also revealed vascular enhancement within the hypodense lesions, known as the central vascular sign. In conclusion, central nervous system aspergillosis can be diagnosed by means of tubular enhanced focuses in hypodense lesions on contrast-enhanced CT scans.Öğe A Case of Pulmonary and Central Nervous System Invasive Aspergillosis With Characteristic Radiological Findings(Soc Turkish Intensivists - Sti, 2024) Akbas, Turkay; Karahan, Fatih; Ogul, Hayri; Onec, Birgul; Onmez, Attila; Unlu, Nisa; Balbay, Ege GulecCentral nervous system invasive aspergillosis is a rare and fatal infection that accounts for the majority of brain lesions in immunocompromised patients. A 56-year-old man with diabetes mellitus and non-Hodgkin's lymphoma was admitted to the emergency department with a diagnosis of pneumonia-related sepsis. At presentation, cranial computed tomography (CT) and magnetic resonance imaging were normal. However, thoracic CT revealed right lung pneumonia, and antibiotic therapy was initiated. Control CT scans performed on the 13(th) day of admission-because the patient had subsequently become hypotensive and somnolent- revealed halo signs in the lungs and multiple hypodense lesions within the cerebrum, consistent with invasive aspergillosis. A post-contrast cranial CT scan also revealed vascular enhancement within these hypodense lesions, known as the central vascular sign. In conclusion, central nervous system aspergillosis can be diagnosed by means of tubular enhanced foci in hypodense lesions on contrast-enhanced CT scans.Öğe Coexistence of Right Cervical Rib and Left Rudimentary 1st Thoracic Rib(Springer India, 2024) Tuncer, Kutsi; Ulas, Ali Bilal; Aydin, Yener; Ogul, Hayri; Eroglu, AtillaRib anomalies are rare congenital anomalies that do not usually cause additional symptoms, can be seen together with some other developmental defects, and whose frequency varies according to ethnicity and age in the society. Congenital anomalies of the ribs include short rib, pseudoarthrosis of the first rib, intrathoracic rib, pelvic rib, cervical rib, forked rib, rib fusion, and rib bridging. In this study, the coexistence of the right cervical rib and the left rudimentary 1st thoracic rib was presented in a 56-year-old female case.Öğe Comparison of conventional MR arthrography and 3D volumetric MR arthrography in detection of cartilage defects accompanying glenoid labrum pathologies(Springer, 2024) Gokce, Ayse; Guclu, Derya; Unlu, Elif Nisa; Kazoglu, Ibrahim; Arican, Mehmet; Ogul, HayriObjectivesIn this study, we aimed to compare conventional and T1-weighted volumetric magnetic resonance arthrography (MRA) in the diagnosis and grading of glenoid cartilage defects that accompany labral pathologies.Materials and methodsA total of 79 patients who were prediagnosed with labrum pathologies based on shoulder magnetic resonance imaging (MRI) had MRA and CTA between December 2021 and May 2022. CTA was regarded as reference standard. CTA images were examined by a radiologist experienced in musculoskeletal radiology, and MRA images were examined by two radiologists independently to determine presence, grade, and localization of any glenoid cartilage defect, if present. Sensitivity, specificity, and accuracy were calculated separately for conventional and T1-weighted volumetric MRA. In addition, at the last stage, two observers examined all MRAs together, and the presence of a cartilage defect was decided by consensus, and the overall sensitivity, specificity, and accuracy were calculated.ResultsCartilage defect was detected on CTAs of 48 (60.75%) cases of among 79 patients with labrum pathology. The sensitivity, specificity, and accuracy of conventional MRA for two examiners were 17-19%, 100-100%, and 49-51%, respectively, while those values were 67-65%, 92-97%, and 84-77%, respectively, for T1-weighted volumetric MRA. Inter-examiner agreement was excellent for diagnosis of cartilage defects on all MRAs. The overall sensitivity, specificity, and accuracy for detection of glenoid cartilage lesions by MRA were 69%, 97%, and 80%, respectively.ConclusionT1-weighted volumetric MRA seems to demonstrate cartilage defects accompanied with labrum pathologies accurately with high sensitivity, specificity, and excellent inter-examiner agreement.Öğe A detailed 3D volumetric magnetic resonance arthrographic analysis in a spiral ligament and anteroinferior capsuloligamentous complex of the shoulder joint(Springer, 2025) Yahsi, Yusuf; Ogul, Hayri; Ertogrul, Rodi; Sakci, Zakir; Guclu, Derya; Ozdemir, MustafaObjectivesThis study aimed to delineate the anatomical characteristics of the spiral glenohumeral ligament (SpiGHL), middle glenohumeral ligament (MGHL), and anterior band of inferior glenohumeral ligament (AB-IGHL), as well as their potential interrelationships, using MR arthrographic images from a large patient population.MethodsAll patients underwent 3D volumetric magnetic resonance (MR) arthrography sequences in addition to conventional MR imaging. All MR arthrography images were retrospectively assessed by two radiologists with expertise in arthrography. The origins and insertions of SpiGHL, MGHL, and AB-IGHL, along with any variations and interrelationships, were carefully examined and documented. These findings were statistically analyzed according to the patient's age, gender, and laterality of the shoulder (right or left).ResultsThe study included 190 shoulder MR arthrographies, identifying SpiGHL in 15 patients (7.9%). Among the 190 patients, 20 (10.5%) had an AB-IGHL with a high insertion on the anterior glenoid margin. In 10 of 15 patients with SpiGHL (66.6%), a conjugation of SpiGHL and MGHL was observed. MGHL hypoplasia was observed in 11 MR arthrographies. Of the 11 patients, 5 (45.5%) also presented with SpiGHL. The incidence of SpiGHL was significantly higher in the group with hypoplastic MGHL. Additionally, the average age of patients with a high-origin AB-IGHL was significantly lower than that of patients without this feature.ConclusionsKnowing the anterior capsuloligamentous detailed anatomy of the shoulder joint and its possible variations is important in correctly interpreting the pathologies of this region. The spiral GHL and its possible relationship with other ligaments can be defined in detail on MR arthrography.Öğe Evaluation of parenchymal collaterals in patients with meningioma using contrast-enhanced T1 MPRAGE sequence(Masson Editeur, 2025) Gozgec, Elif; Ogul, Hayri; Naldemir, Ibrahim Feyyaz; Sakci, Zakir; Kantarci, MecitBackground: Post-contrast T1-MPRAGE sequence has been used in routine tumor imaging at many centers for decades. Meningiomas may be accompanied by leptomeningeal as well as parenchymal collaterals. In this study, we aimed to demonstrate the collaterals that may accompany meningiomas on postcontrast T1-MPRAGE imaging and to investigate their relationship with location, size, histologic features, adjacent bone, and parenchymal changes. Methods: In this study, postcontrast T1-MPRAGE images of 326 meningiomas from 259 patients were independently analyzed by two observers. The presence of parenchymal collaterals and unilateral, contralateral or bilateral localization were determined. Meningiomas' diameters, locations, presence of dural sinus invasion, associated parenchymal changes and bony changes were determined. Histologic grades were determined if applicable. The data obtained were analyzed statistically. Results: Parenchymal collaterals were demonstrated in 25% of meningiomas (66/259). Of these, 65% were unilateral, 12% contralateral and 23% bilateral. There was a significant correlation between malignancy and the presence of collaterals in histologically diagnosed meningiomas (77%, p = 0.01). The presence of collaterals was also significantly higher in meningiomas with sinus invasion and bone destruction (p < 0.001). As tumor size increased, unilateral and bilateral collateral development increased (p < 0.001, p = 0.008, respectively), but it was not significant in contralateral cases. There was significant concordance between the observers in terms of the presence of collaterals (kappa: 0.773). Conclusions: Meningiomas may be accompanied by parenchymal collaterals. WHO grade 3 histologic type, sinus invasion, bone destruction and size increase are predictors of collateral development.Öğe Fenestration aneurysm of the basilar artery(Ma Healthcare Ltd, 2023) Ay, Mutlu; Ogul, Hayri; Kantarci, Mecit[No abstract available]Öğe Glenohumeral Joint Volume Measurement in Patients with Shoulder Instability: A 3D Volumetric Magnetic Resonance Arthrographic Study(Mdpi, 2024) Gueclue, Derya; Unlu, Elif Nisa; Arican, Mehmet; Acar, Oguzhan; Uludag, Veysel; Ogul, HayriBackground and Objectives: This study aimed to compare capsular volume in patients with shoulder instability to that in control subjects without instability using magnetic resonance (MR) arthrography. The objective was to develop a reliable screening method with which to assess shoulder volume. Materials and Methods: In 21 patients with atraumatic shoulder instability and 21 controls, thin-slice 3D volumetric MR arthrography sequences were obtained. MR arthrography images were uploaded to 3D reconstruction, and 3D images were generated. From the 3D reconstructed images, volumetric measurements of rotator interval (RI), anterior and posterior capsular (AC, PC) recesses, biceps tendon sheath (BS), axillary recess (AR), and total glenohumeral joint (TGJ) were performed. Individuals with any extra-articular contrast leakage were also recorded. Results: A retrospective study analyzed a patient group of 21 individuals with shoulder instability (mean age 29.52 +/- 12.83 years) and a control group of 21 individuals without instability (mean age 35.71 +/- 12.77 years). No statistically significant differences were identified between the groups with regard to age, gender, or side distribution. The mean total joint volume was significantly higher in the instability group (29.85 +/- 6.40 cm3) compared to the control group (23.15 +/- 3.48 cm3, p = 0.0001). Additionally, the mean volumes of the RI, AC, PC, BS, and AR were all significantly greater in the patient group compared to the control group. Conclusions: 3D volumetric MR arthrographic measurements of the shoulder joint capacity can provide valuable insights for clinical follow-up and guide surgical treatment decisions in cases of atraumatic shoulder instability.Öğe Hydatid cyst in multiple locations(Ma Healthcare Ltd, 2023) Aydin, Yener; Ogul, Hayri; Eren, Suat[No abstract available]Öğe Infraorbital nerve involvement as a pathognomonic sign of IgG4-related ophthalmic disease(Elsevier France-Editions Scientifiques Medicales Elsevier, 2024) Ogul, Hayri[No abstract available]
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