Chondromyxoid fibroma of frontal bone is a rare lesion. Plain skull films showed a round radiolucent mass with a sclerotic margin. It was dense on plain CT scan and showed no convincing contrast enhancement. MR imaging showed low signal intensity relative to gray matter on T1-weighted image (500/20), isointensity on proton-density image (2000/30), high intensity on T2-weighted image, and marked...

Background Myocardial BOLD MRI is an emerging non-contrast approach for the assessment of ischemic heart disease. However, current BOLD CMR methods (T2-weighted, T2*-weighted or bSSFP) are limited by poor spatial coverage and image artifacts (e.g. coil bias, B1 and B0 inhomogeneities). To address these limitations, we developed a fast, free breathing 3D T2 mapping technique at 3T that utilizes ...

PURPOSE To develop an accurate method of fusing computed tomography (CT) with magnetic resonance imaging (MRI) for post-implant dosimetry after prostate seed implant brachytherapy. MATERIAL AND METHODS Prostate cancer patients were scheduled to undergo CT and MRI after brachytherapy. We obtained the three MRI sequences on fat-suppressed T1-weighted imaging (FST1-WI), T2-weighted imaging (T2-W...

J Neurol Neurosurg Psychiatry Month 2017 Vol 0 No 0 Figure 1 The clinical, paraclinical course and therapeutic regimens of a female patient with NMO. (A) Timeline of NMO and therapeutic regimens. (B) November 2002: sagittal T2-weighted image of spinal cord exhibits hyperintense lesions in the thoracic spinal cord from the T2 to T4 levels. Axial brain MRI scan shows corticospinal tract lesions i...

BACKGROUND Low-resolution images may be acquired in magnetic resonance imaging (MRI) due to limited data acquisition time or other physical constraints, and their resolutions can be improved with super-resolution methods. Since MRI can offer images of an object with different contrasts, e.g., T1-weighted or T2-weighted, the shared information between inter-contrast images can be used to benefit...

PURPOSE To study MR patterns of venous sinus occlusive disease and to relate them to the underlying pathophysiology by comparing the appearance and pathophysiologic features of venous sinus occlusive disease with those of arterial ischemic disease. METHODS The clinical data and MR examinations of 26 patients with venous sinus occlusive disease were retrospectively reviewed with special attent...

Background Several cardiac T2 mapping techniques with varying T2 preparation (T2Prep) times have been proposed for the quantification of cardiac edema [1-3]. Among these, radial T2 mapping, which is robust to motion artifacts, suffers from a low signal-to-noise ratio (SNR) caused by the undersampling of the k-space periphery and by its density compensation function (DCF) (Fig. 1a). However, sin...

BACKGROUND AND PURPOSE EAF consists of exceedingly rare lesions and presently lacks specific imaging reports. The purpose of this study was to determine the CT and MR imaging features of nasal cavity EAF. MATERIALS AND METHODS We retrospectively reviewed 6 patients with histology-proven EAF in the nasal cavity. All 6 patients underwent CT and 3 patients also underwent MR imaging. The followin...