Imaging of the Functional and Dysfunctional Visual System

Publication date: Available online 27 May 2015 Source:Seminars in Ultrasound, CT and MRI Author(s): Edgar A. DeYoe , John L. Ulmer , Wade M. Mueller , David S. Sabsevitz , Danielle C. Reitsma , Jay J. Pillai fMRI is used clinically to map visual cortex prior to brain surgery or other invasive treatments in order to achieve an optimal balance between therapeutic effect and the avoidance of post-operative vision deficits. Clinically optimized stimuli, analyses and displays permit identification of cortical subregions supporting high acuity central vision that is critical for reading and other essential visual functions. A novel data display permits instant appreciation of the functional relationship between the pattern of fMRI brain activation and the pattern of vision loss and preservation within the patient's field of view. Neurovascular uncoupling and its detection in visual cortex are key issues for the interpretation of fMRI results in patients with existing brain pathology.
Source: Seminars in Ultrasound, CT and MRI - Category: Radiology Source Type: research