Dynamic contrast-enhanced MR imaging

Quantification of blood-brain-barrier permeability dysregulation and inflammatory activity in MS lesions by dynamic-contrast enhanced MR imaging

Objective: Measurement of blood-brain permeability dysfunction in active and chronic MS lesions with T1-weighted dynamic contrast-enhanced MRI to show variation in inflammatory activity Background: blood-brain-barrier perfusion characterization impaired in MS as some studies have shown recently buta comparison between perfusion parameters in contrast-enhanced and non-enhanced lesions not have ...

Dynamic contrast-enhanced T2*-weighted MR imaging of gliomatosis cerebri.

BACKGROUND AND PURPOSE MR imaging characteristics of gliomatosis cerebri reiterate the diffuse nature of this tumor but are nonspecific and thus may pose a diagnostic challenge. Because perfusion MR imaging can provide a physiologic map of the microcirculation, we compared the measured relative cerebral blood volume (rCBV) at perfusion imaging with histopathologic findings in gliomatosis cerebr...

Dynamic susceptibility contrast-enhanced perfusion MR Imaging of Brain Tumors

Prostate cancer localization with dynamic contrast-enhanced MR imaging and proton MR spectroscopic imaging.

PURPOSE To prospectively determine the accuracies of T2-weighted magnetic resonance (MR) imaging, dynamic contrast material-enhanced MR imaging, and quantitative three-dimensional (3D) proton MR spectroscopic imaging of the entire prostate for prostate cancer localization, with whole-mount histopathologic section findings as the reference standard. MATERIALS AND METHODS This study was approve...

Contrast-enhanced MR imaging of neurocutaneous melanosis.

A previously healthy 10-year-old girl presented with a 3-week history of headaches, vomiting, and diplopia. Physical examination revealed multiple pigmented cutaneous nevi, bilateral sixth nerve palsies, and papilledema. No pigmented intraocular lesions were found. Unenhanced CT and MR scans were unremarkable. An opening pressure of 38 em H20 was found at lumbar puncture with no abnormalities o...