Sep 2016 - May 2017

Medical Doctor Kızıltepe State Hospital, Mardin/Kızıltepe

May 2017 - Jun 2022 

Radiology Residency Dokuz Eylul University, Izmir/Balcova

2022 - 2024

Radiology Specialist Kars State Hospital, Kars

ChatGPT-4o's Performance in Brain Tumor Diagnosis and MRI Findings: A Comparative Analysis with Radiologists

By

Ozenbas, C (Ozenbas, Cemre) [1] ; Engin, D (Engin, Duygu) [2] ; Altinok, T (Altinok, Tayfun) [1] ; Akcay, E (Akcay, Emrah) [3] ; Aktas, U (Aktas, Ulas) [4] ; Tabanli, A (Tabanli, Alper) [4]

 (provided by Clarivate) 

Source

ACADEMIC RADIOLOGY

Volume32Issue6Page3608-3617

DOI10.1016/j.acra.2025.01.033

Published

JUN 2025

Early Access

MAY 2025

Indexed

2025-06-17

Document Type

Article

Jump to

Abstract

Rationale and objectives: To evaluate the accuracy of ChatGPT-4o in identifying magnetic resonance imaging (MRI) findings and diagnosing brain tumors by comparing its performance with that of experienced radiologists. Materials and methods: This retrospective study included 46 patients with pathologically confirmed brain tumors who underwent preoperative MRI between January 2021 and October 2024. Two experienced radiologists and ChatGPT 4o independently evaluated the anonymized MRI images. Eight questions focusing on MRI sequences, lesion characteristics, and diagnoses were answered. ChatGPT-4o's responses were compared to those of the radiologists and the pathology outcomes. Statistical analyses were performed, which included accuracy, sensitivity, specificity, and the McNemar test, with p<0.05 considered to indicate a statistically significant difference. Results: ChatGPT-4o successfully identified 44 of the 46 (95.7%) lesions; it achieved 88.3% accuracy in identifying MRI sequences, 81% in perilesional edema, 79.5% in signal characteristics, and 82.2% in contrast enhancement. However, its accuracy in localizing lesions was 53.6% and that in distinguishing extra-axial from intra-axial lesions was 26.3%. As such, ChatGPT-4o achieved success rates of 56.8% and 29.5% for differential diagnoses and most likely diagnoses when compared to 93.2-90.9% and 70.5-65.9% for radiologists, respectively (p<0.005). Conclusion: ChatGPT-4o demonstrated high accuracy in identifying certain MRI features but underperformed in diagnostic tasks in comparison with the radiologists. Despite its current limitations, future updates and advancements have the potential to enable large language models to facilitate diagnosis and offer a reliable second opinion to radiologists.

Keywords

Author KeywordsArtificial intelligenceChatGPT-4oBrain tumorMRI

Giant Coronary-Pulmonary Artery Fistula Incidentally Detected in a Patient Presenting With Acute Inferior Myocardial Infarction

By

Ozenbas, C (Ozenbas, Cemre) [1] ; Sukun, A (Sukun, Abdullah) [2]

 (provided by Clarivate) 

Source

CUREUS JOURNAL OF MEDICAL SCIENCE

Volume16Issue4

DOI10.7759/cureus.58627

Article Number

e58627

Published

APR 20 2024

Indexed

2024-05-21

Document Type

Article

Abstract

Coronary artery fistulas are abnormal connections between the coronary arteries and the heart or other surrounding vascular structures. Although they are usually congenital, they can also occur iatrogenically or due to trauma. They are usually asymptomatic, but they can cause serious and even fatal complications. These complications include myocardial infarction, embolism, thrombosis, arrhythmia, and rupture. In a 54year-old woman admitted to the emergency department with an acute inferior myocardial infarction, a giant coronary-pulmonary artery fistula was detected on angiography. The fistula could not be closed percutaneously, and computed tomography angiography (CTA) revealed extensive aneurysms and diffuse calcifications. Large fistulas should be closed due to the risk of rupture. Small fistulas should be detected by CTA, and radiologists should be familiar with the imaging features.

Keywords

Author Keywordsmyocardial infarctionaneurysmgiantctacoronary-pulmonary artery fistulas

An overlooked cause of groin pain: Ischiofemoral impingement syndrome

By

Ozenbas, C (Ozenbas, Cemre) [1] ; Engin, D (Engin, Duygu) [2] ; Altinok, T (Altinok, Tayfun) [1]

 (provided by Clarivate) 

Source

JOURNAL OF BACK AND MUSCULOSKELETAL REHABILITATION

Volume38Issue5Page1133-1138

DOI10.1177/10538127251325843

Published

SEP 2025

Early Access

MAR 2025

Indexed

2025-04-06

Document Type

Article

Jump to

Abstract

Background: Ischiofemoral impingement syndrome (IFI) is a condition characterized by narrowing of the space between the ischium and femur, potentially compressing the quadratus femoris muscle. Although associated with hip pain, its role in groin pain is underexplored. Objective To assess the relationship between IFI and groin pain and examine the association between quadratus femoris muscle edema and ischiofemoral space (IFS) and quadratus femoris space (QFS) measurements. Methods: A retrospective study was performed on 568 hips from 284 patients who underwent pelvic MRI between January and September 2024. Patients were grouped based on groin pain. IFS and QFS were measured on T1-weighted axial MRI images, and quadratus femoris muscle edema was evaluated on T2-weighted fat-suppressed axial images. Statistical analysis included the Independent Samples t-test, Pearson Chi-square test, and ROC analysis, with significance set at p < 0.005. Results: Groin pain was present in 23 of 568 hips (4%), with quadratus femoris muscle edema detected in 19 of these cases (82.6%, p < 0.001). Quadratus femoris edema was found in 116 of the 568 hips (20.4%). IFS and QFS measurements were significantly lower in patients with quadratus femoris edema. ROC analysis revealed an IFS cut-off of 16 mm (86.5% sensitivity, 80.3% specificity) and a QFS cut-off of 9.5 mm (92% sensitivity, 93.2% specificity). Conclusions: IFI should be considered in the differential diagnosis of unexplained groin pain, as smaller IFS and QFS are linked to quadratus femoris muscle edema.

Keywords

Author Keywordsmagnetic resonance imagingmusculoskeletalpainradiology

Keywords PlusQUADRATUS FEMORIS MUSCLEMRI FINDINGSABNORMALITIESTEAR

Rare complication of a common procedure: Pneumomediastinum following an endodontic procedure

By

Ozenbas, C (Ozenbas, Cemre) [1] ; Aydin, S (Aydin, Sercan) [2]

 (provided by Clarivate) 

Source

ULUSAL TRAVMA VE ACIL CERRAHI DERGISI-TURKISH JOURNAL OF TRAUMA & EMERGENCY SURGERY

Volume31Issue5Page490-492

DOI10.14744/tjtes.2025.63531

Published

MAY 2025

Indexed

2025-09-23

Document Type

Article

Jump to

Abstract

Pneumomediastinum is a rare but potentially serious complication characterized by the presence of air within the mediastinal structures. Although typically associated with thoracic trauma or vigorous coughing, it can also occur after dental procedures involving high-speed air-turbine drills. During such procedures, air may enter the cervical fascial planes and extend to the mediastinum, posing risks such as deep neck infections or mediastinitis. This report describes the case of a 38-year-old woman who developed cervical emphysema and pneumomediastinum on the same day following endodontic treatment. Computed tomography (CT) imaging revealed air densities extending from the submandibular region to the mediastinum. There was no evidence of pneumothorax, pleural effusion, or pericardial effusion. The patient was managed conservatively with oxygen therapy and intravenous antibiotics, leading to complete recovery within one week. This case underscores the importance of recognizing pneumomediastinum in patients presenting with neck swelling and subcutaneous crepitus after dental procedures. As it can be mistaken for postoperative edema, infection, or an allergic reaction, early CT imaging is essential for accurate diagnosis and prompt management. Raising awareness of this rare complication among healthcare professionals is critical to ensuring timely detection and effective treatment.

Keywords

Author KeywordsDentalendodonticpneumomediastinum

Coexistence of Pancreatic Neuroendocrine Tumor and Pseudotumor: Two Rare Lesions

By

Ozenbas, C (Ozenbas, Cemre) [1] ; Karaarslan, S (Karaarslan, Serap) [2] ; Gur, AS (Gur, Akif Serhat) [3]

 (provided by Clarivate) 

Source

INTERNATIONAL JOURNAL OF SURGICAL PATHOLOGY

Volume33Issue3Page749-752

DOI10.1177/10668969241272054

Published

MAY 2025

Early Access

SEP 2024

Indexed

2024-09-21

Document Type

Article

Jump to

Abstract

Neuroendocrine tumors and pseudotumors of the pancreas are 2 separate rare lesions. Neuroendocrine tumors originate from neuroendocrine cells, but many different factors have been suggested for the origin of pseudotumors. As the first reports of these 2 distinct entities found in a single patient have been published, our aim is to present the imaging and pathological characteristics of these entities.

Keywords

Author Keywordspancreaticpseudotumorp-NETneuroendocrine tumor

Radiological and biomechanical evaluation of the ulnar nerve after the percutaneous application of the medial K-wire in the extended position on supracondylar humerus fractures: Does the postoperative long arm splint position matter?

By

Çeltik, M (Celtik, Mustafa) [1] ; Özkan, MH (Ozkan, Mustafa Hulusi) [2] ; Hapa, O (Hapa, Onur) [2] ; Yanik, B (Yanik, Berkay) [3] ; Balci, A (Balci, Ali) [4] ; Kiray, A (Kiray, Amac) [5] ; Zeybek, G (Zeybek, Gulsah) [5] ; Özenbas, C (Ozenbas, Cemre) [6]

 (provided by Clarivate) 

Source

MEDICINE

Volume103Issue40

DOI10.1097/MD.0000000000039900

Article Number

e39900

Published

OCT 4 2024

Indexed

2024-10-19

Document Type

Article

Jump to

Abstract

Our study aimed to evaluate and compare the changes in ulnar nerve tension and strain at different elbow positions radiologically and mechanically before and after applying the medial K-wire on the supracondylar humerus fracture cadaver model. We used ten fresh frozen cadaver upper extremity specimens to measure strain and tension on the ulnar nerve in 3 different elbow positions: elbow full extension, elbow flexion-forearm supination, and elbow flexion-forearm pronation. We employed Shear wave elastography (Siemens Acuson S3000 USG, 9L4 linear probe) and a microstrain gauge (Microstrain, Inc., Burlington) to obtain our measurements. Minimum, maximum and mean stress and strain values on the nerve and its surroundings were measured and compared statistically. The mean values of elbows with full extension are statistically lower than those in elbows with 90 degrees flexion-forearm supination and those with 90 degrees flexion-forearm pronation positions. Statistical evaluations were performed between all of the groups. Elbow 90 degrees flexion-forearm pronation, both minimum and maximum and mean values were statistically higher in the group, including the specimens with Kirschner applied. The mean values in the elbow full extension and elbow 90 degrees flexion-forearm supination positions were statistically similar in the specimens with and without the K-wire applied. Despite the numerous techniques described in the literature, there is no absolute technical method to prevent ulnar nerve damage. K-wire application to the medial epicondyle with the elbow in a slightly extended position is a technique that can be applied to reduce the risk of ulnar nerve paralysis. However, it has been reported that ulnar nerve damage can be observed in cases where a splint is placed in the 90 degrees flexion position. We hypothesize that the position of the elbow joint in the postoperative period may contribute to ulnar nerve paralysis due to soft tissue tension and strain and as a result of changing the balance of the surrounding tissues. Our findings suggest that the long arm splint applied in elbow 90 degrees flexion and forearm pronation position should not be preferred in the postoperative period. The maximum strain values obtained in the elbow full extension were lower, suggesting that it would be appropriate to stabilize the elbow in the extension position as much as possible postoperatively.Level of evidence: Level V.

Keywords

Author Keywordselbow splintsupracondylar humerus fractureulnar nerve

Keywords PlusENTRY PIN FIXATIONCHILDRENINJURYPLACEMENTPALSIES