MR susceptibility imaging

Detecting Cerebral Microbleeds on Susceptibility-Weighted MR Imaging: Comparison with the Conventional MR Imaging Sequences

spontaneous, homogeneous, round foci of low signal intensity on the gradient-recalled echo (GRE) imaging sequence (1, 2). The prevalence of microbleeds in healthy adults is about 5% (2). Microbleeds may be a marker for cerebral microangiopathy and small vessel disease, and they may be a prognostic indicator for potential future bleeding, and especially for patients with ischemic or hemorrhagic ...

Magnetic susceptibility-weighted MR phase imaging of the human brain.

BACKGROUND AND PURPOSE MR gradient echo imaging is sensitive to the magnetic susceptibility of different tissue types. The purpose of this study was to investigate the diagnostic potential of MR phase imaging of the human brain. METHODS High-spatial-resolution, T2*-weighted, single-echo images were acquired in five volunteers and one patient with a brain tumor on a 1.5T system by applying a 3...

Magnetic susceptibility artifacts in gradient-recalled echo MR imaging.

Artifacts related to magnetic susceptibility differences between bone and soft tissue are prevalent on gradient-recalled echo images, particularly when long echo delay times are used. These susceptibility artifacts spatially distort and artifactually enlarge bone contours. This can alter the apparent shape of the spinal canal and exaggerate the degree of spinal stenosis seen in patients with ce...

Dynamic susceptibility contrast-enhanced perfusion MR Imaging of Brain Tumors

Pneumocephalus mimicking cerebral cavernous malformations in MR susceptibility-weighted imaging.

We read with interest the article by de Souza et al 1 about the use of susceptibilityweighted imaging (SWI) for the evaluation of patients with cerebral cavernous malformations (CCMs). In this regard, we would like to report the following case: In November 2008, a 38-year-old woman presented with a history of left tinnitus and hypoacusis. The usual MR imaging sequences showed a left acoustic ne...