A case of rheumatoid meningitis: findings on diffusion-weighted image versus FLAIR image

Diffusion weighted image (DWI) findings in methanol intoxication.

Methanol is a toxic substance with extremely devastating effects upon exposure. The case described suffered from such kind of poisoning. MRI brain demonstrated necrosis bilaterally in the Putamen areas which is a classic hallmark finding. Additional Diffusion weighted imaging showed abnormal signal bilaterally in the putamen areas along with Diffusion positive bilateral lesions (possibly infarc...

Image Denoising Using Anisotropic Diffusion Equations on Reflection and illumination Components of Image

This paper proposes a new hybrid method based on Homomorphic filtering and anisotropicdiffusion equations for image denoising. In this method, the Homomorphic filtering extracts the reflectionand illumination components of a noisy image. Then a suitable image denoising method based onanisotropic diffusion is applied to each components with its special user-defined parameters .This hybridscheme ...

Diffusion-weighted image and fluid-attenuated inversion recovery image mismatch: unclear-onset versus clear-onset stroke.

BACKGROUND AND PURPOSE Mismatch in lesion visibility between diffusion-weighted image and fluid-attenuated inversion recovery image (DWI-FLAIR mismatch) has been proposed as a biomarker for the estimation of ischemic lesion age. The actual onset in some patients with unclear-onset stroke (UnCOS) may be close to the first-found abnormal time. We hypothesized that patients with UnCOS within a par...

Noise estimation for diffusion weighted MR image

Craniofacial fibrous dysplasia: New image findings

Introdouction: Fibrous dysplasia is a benign fibro-osseous lesion that affects craniofacial bones including the maxilla and mandible. In the most cases of fibrous dysplasia of facial bones, radiographic findings represent lucent or mixed radiolucent-radiopaque lesion with ill-defined borders and gradual blending of its border with adjacent bone . In this presentation, a patient suffering ...