Tinnitus is a common clinical syndrome with rare radiologic findings . This human malady may exist in two forms, namely objective or subjective. Objective tinnitus is a real sound produced outside the inner ear, which is heard by the patient and also by the examining physician. Subjective tinnitus is heard only by the patient and involves the neural mechanisms of the ear or auditory pathways. T...

moyamoya disease is a rare vaso-occlusive illness with an unknown etiology characterized by stenosis of the internal carotid arteries with spontaneous development of a collateral vascular network. a 15-month-old girl was referred to the emergency ward of imam reza hospital due to decreased level of consciousness, focal seizures and fever during the previous 24 hours with an impression of enceph...

ECR/ESR takes no responsibility for the content of the Satellite Symposia, and the opinions expressed therein do not necessarily reflect those of ECR/ESR. Due to its high tissue contrast and its non-invasiveness, magnetic resonance (MR) imaging is accepted as the most sensitive method for imaging CNS diseases. In most diseases like tumour, infection, but even vascular diseases the use of para-m...

OBJECTIVE To evaluate the usefulness of time-resolved contrast enhanced magnetic resonance angiography (4D MRA) after stent-assisted coil embolization by comparing it with time of flight (TOF)-MRA. MATERIALS AND METHODS TOF-MRA and 4D MRA were obtained by 3T MRI in 26 patients treated with stent-assisted coil embolization (Enterprise:Neuroform = 7:19). The qualities of the MRA were rated on a...

AIM To review the published literature comparing the diagnostic accuracy of magnetic resonance angiography (MRA) with and without gadolinium in diagnosing renal artery stenosis, using catheter angiography as reference. MATERIALS AND METHODS A meta-analysis was performed of English language articles identified by computer search using PubMed/MEDLINE, followed by extensive bibliography review f...

PURPOSE To investigate the discrepancy between the arteriovenous malformations seen on magnetic resonance angiography (MRA) and on stereotactic digital subtracted angiography (DSA). METHODS AND MATERIALS The target volume on stereotactic DSA (V(DSA)) and the target volume on MRA (V(MRA)) were separately delineated in 28 intracranial arteriovenous malformations. The coordinates of the center a...

permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Previous studies have reported stroke magnetic resonance imaging (MRI) assessments that included a carotid magnetization-prepared rapid acquisition with gradient-echo (MPRAGE) sequence. The findings of these studies showed that a carotid MPRAGE-positive signal was...

BACKGROUND AND PURPOSE The purposes of this study were to describe clinical and radiological characteristics of children with arterial ischemic stroke and normal MRA to compare them with children with arterial ischemic stroke and abnormal MRA. METHODS We conducted a retrospective review of clinical records and imaging. RESULTS Forty children with arterial ischemic stroke and normal MRA were...

BACKGROUND AND PURPOSE Ulceration in carotid plaque is a risk indicator for ischemic stroke. Our aim was to compare plaque ulcer detection by standard TOF and CE-MRA techniques and to identify factors that influence its detection. MATERIALS AND METHODS Carotid MR imaging scans were acquired on 2066 participants in the ARIC study. We studied the 600 thickest plaques. TOF-MRA, CE-MRA, and black...