Large hepatic vein blurring, liver-kidney contrast, and overall impression provided the highest reader agreement. Large hepatic vein blurring may provide the highest classification accuracy for dichotomized grading of hepatic steatosis.

Purpose To optimize acquisition parameters for three-dimensional fast spin-echo (3D FSE) imaging of the knee. Materials and methods The knees of 8 healthy volunteers were imaged in a 3 T MRI scanner using an 8-channel knee coil. A total of 146 intermediate-weighted isotropic resolution 3D FSE (3D-FSE-Cube) images with varied acquisition parameter settings were acquired with an additional reference scan performed for subjective image quality assessment. Images were graded for overall quality, parallel imaging artifact severity and blurring. Cartilage, muscle and fluid signal-to-noise ratios and fluid-cartilage contrast-to-noise ratios were quantified by acquiring scans without radiofrequency excitation and custom-reconstructing the k-space data. Mixed effects regression modeling was used to determine statistically significant effects of different parameters on image quality. Results Changes in receiver bandwidth, repetition time and echo train length significantly affected all measurements of image quality (p < .05). Reducing bandwidth improved all metrics of image quality with the exception of blurring. Reader agreement was slight to fair for subjective metrics, but overall trends in quality ratings were apparent. Conclusion We used a systematic approach to optimize 3D-FSE-Cube parameters for knee imaging. Image quality was overall improved using a receiver bandwidth of ±31.25 kHz, and blurring increased with lower bandwidth and longer echo trains.

Increased uveal tract enhancement is a common finding in patients with uveitis, regardless of anatomic distribution and etiology. MRI can also further evaluate complications of uveitis and help differentiate it from masquerade syndromes.

Gadolinium (Gd)-enhanced magnetic resonance imaging plays an essential role in the detection, characterization, and staging of intracranial neoplasms and vascular abnormalities. Although Gd is helpful in a majority of situations, it can lead to diagnostic misinterpretation in the setting of active vascular extravasation. Scarce reports of intracranial extravasation of Gd are present in the literature. Here, we report the first case of surgically proven spontaneous intraparenchymal extravasation of Gd mimicking an enhancing intra-axial neoplasm in a pediatric patient. Early and accurate recognition of Gd extravasation is critical in obtaining the accurate diagnosis and triaging patients expeditiously into proper avenues of care.

A 21-year-old female patient presenting with a left-sided submandibular mass was referred for CT imaging of the neck. Findings of laboratory studies were unremarkable. Contrastenhanced CT of the neck showed a 1.7-cm well-circumscribed, predominantly low-attenuation mass in the left submandibular space. The remainder of the neck was normal. Surgery was performed; pathology revealed a benign squamous epithelial inclusion cyst that had replaced part of the lymph node and was surrounded by normal lymphoid tissue.