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

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.

The role of MRS in the differentiation of benign and malignant soft tissue and bone tumors.

Objective: The aim of our study was to investigate the value of choline in the discrimination of benign and malignant soft tissue and bone tumors.

Materials And Methods: The study group consisted of thirty subjects with bone or soft tissue tumors larger than 1.5 cm in diameter.

[Dynamic contrast-enhanced magnetic resonance imaging findings of mass lesions of the pontocerebellar angle].

Objectives: The differential diagnosis of mass lesions of the pontocerebellar angle is not always possible by conventional magnetic resonance imaging (MRI). In this study, we investigated the role of dynamic contrast-enhanced MRI in the differential diagnosis of acoustic neurinoma, meningioma, and paraganglioma.

Patients And Methods: Twelve patients (8 females, 4 males; mean age 47.

A giant solitary schwannoma of the arm mimicking cyst hydatid.

We present a 77-year-old female with a size of 9.5×9×7 cm giant schwannoma of musculocutaneous nerve volarly located in midarm, which was misdiagnosed as cyst hydatid on ultrasonographic and magnetic resonance image examination. There was not any neurologic sequele after the operation.

Long-term effects of percutaneous nephrolithotomy on renal morphology and arterial vascular resistance as evaluated by color Doppler ultrasonography: preliminary report.

We evaluated the long-term effects of percutaneous nephrolithotomy (PNL) on renal morphology and vascular resistance. Parenchyma thickness, echogenicity and resistive index (RI) of upper, middle and lower poles of operated and contralateral kidneys of 41 patients with 82 renal units who underwent unilateral PNL with single pole access between 2000 and 2002 were examined separately by color Doppler ultrasonography. Mean patient age and duration between PNL and evaluation time were 38.

Effect of nasal septal deviation on total ethmoid cell volume.

Background: The aim of this study was to evaluate the effect of nasal septal deviation (NSD) on ethmoid cell volume and to determine whether there was any correlation between NSD grade and ethmoid cell volume.

Methods: Forty computerized tomography (CT) scans from patients with rhinosinusitis symptoms with NSD were evaluated. Septal deviations were classified into three groups according to the degree of deviation on CT.

An unusual case of acute disseminated encephalomyelitis confined to brainstem.

Acute disseminated encephalomyelitis (ADEM) is an immune-mediated demyelinating disorder usually encountered in children or adolescents and characterized by multifocal neurological deficits of rapid onset. Typical target areas of demyelination include the corona radiata, centrum semiovale, periventricular white matter, cerebellar peduncles and brainstem. Involvement of deep gray matter nuclei is also frequent.

Sonographic evaluation of the carpal tunnel after provocative exercises.

Objective: Dynamic carpal tunnel syndrome (CTS) is a subtype of CTS in which symptoms usually subside with rest and return with repetitive motions. In this subgroup, nerve conduction studies, performed at rest, are often inconclusive. In this study, the diagnostic value of provocative sonography was evaluated in patients with dynamic CTS.

The cisternal segment of the abducens nerve in man: three-dimensional MR imaging.

Purpose: The goal of this study was to identify the abducens nerve in its cisternal segment by using three-dimensional turbo spin echo T2-weighted image (3DT2-TSE). The abducens nerve may arise from the medullopontine sulcus by one singular or two separated rootlets.

Material And Methods: We studied 285 patients (150 males, 135 females, age range: 9-72 years, mean age: 33.

Occupational prolonged organic solvent exposure in shoemakers: brain MR spectroscopy findings.

Our purpose was to investigate, by magnetic resonance (MR) spectroscopy, the metabolite changes in the brains of subjects in the shoemaking industry who had been chronically exposed to organic solvents. A total of 49 male subjects and 30 age-matched healthy volunteers underwent detailed neurological and psychiatric examinations. All subjects had long-echo [repetition time (TR) 2000 ms, echo time (TE) 136 ms] single-voxel MR spectroscopy.

Temporary and permanent inferior vena cava filter combination in a young patient: to implant or not to implant?

The decision to implant vena cava filters, either temporary or permanent, is difficult in young patients. We present the case of a young man with pulmonary embolism in whom temporary and permanent inferior vena cava filters were implanted. The decision process is discussed in relation to the current literature.

[Associated brain anomalies and clinical findings in corpus callosum dysgenesis].

Purpose: The aim of this study was to evaluate the relationship between the types of the corpus callosum dysgenesis, the associated brain anomalies and clinical findings.

Materials And Methods: We analyzed the MR imaging findings in 169 patients with callosal dysgenesis. Corpus callosum dysgenesis was categorized into agenesis, hypogenesis and hypoplasia.

[MR spectroscopy in the differential diagnosis of focal brain lesions in neurofibromatosis type 1 patients].

Purpose: To determine the role of MR spectroscopy in the differential diagnosis of focal brain lesions in neurofibromatosis type 1.

Materials And Methods: Fifteen patients with neurofibromatosis type 1 were evaluated by routine MRI and single voxel MR spectroscopy (TE: 31). The posterior parietal white matter of 20 age-matched healthy volunteers constituted the control group.

Case report of a giant renal oncocytoma.

This report represents the third largest renal oncocytoma in English literature. The tumor was considered as a renal cell carcinoma preoperatively based on the physical examination and radiographic findings.

Giant axonal neuropathy: MRS findings.

Giant axonal neuropathy (GAN) is a rare genetic disease of childhood involving the central and peripheral nervous systems. Axonal loss with several giant axons filled with neurofilaments is the main histopathological feature of peripheral nerve biopsies in this disease. Routine neuroimaging studies reveal diffuse hyperintensities in cerebral and cerebellar white matter.

Increased p-wave duration and p-wave dispersion in patients with aortic stenosis.

Background: P-wave dispersion (PWD), defined as the difference between the maximum and minimum P-wave duration, has been proposed as being useful for the prediction of paroxysmal atrial fibrillation (AF). AF is the most common arrhythmia and an important prognostic indicator for clinical deterioration in patients with aortic stenosis (AS). The aim of the present study was to evaluate PWD in patients with AS.

Rare case of neuroendocrine small cell carcinoma of the endometrium with paraneoplastic membranous glomerulonephritis.

Small cell carcinomas are well-recognized tumors known to occur predominantly in the lung. These neoplasms are occasionally associated with a variety of paraneoplastic syndromes. Four cases of paraneoplastic glomerulopathy associated with small cell lung carcinoma have been reported.

Doppler waveforms and blood flow parameters of the superior and inferior mesenteric arteries in patients having Behçet disease with and without gastrointestinal symptoms: preliminary data.

Objective: To evaluate hemodynamic changes in mesenteric arteries in patients with Behçet disease with and without gastrointestinal symptoms.

Methods: Doppler sonography of mesenteric arteries was performed in 25 symptomatic and 15 asymptomatic patients having Behçet disease and in 25 healthy control subjects. The peak systolic, minimal, and mean velocities, resistive and pulsatility indexes, inner diameter, cross-sectional area, and blood flow volume of mesenteric arteries were evaluated.

[Are there effects due to the existence of coronary collateral circulation on left ventricular function in patients with coronary artery disease?].

Objective: The role of coronary collateral circulation (CCC) on the improvement of left ventricular function in coronary artery disease is controversial. The aim of this study is to investigate the effect of CCC on left ventricular function in patients with ischaemic heart disease.

Methods: Accordingly, 76 patients (39 female, 37 male, mean age--61 +/- 17 years) who had single vessel disease with > 85% narrowing in left anterior descending coronary artery were enrolled in this study.