Brain Activity Mapping with Functional MR Imaging

Abstract

Brain activity mapping with functional magnetic resonance (MR) imaging has become a remarkably widely used technique for the evaluation of the brain. Color images of brain activity have been featured in thousands of scientific articles, on the covers of many of the highest-profile science and medical journals, and frequently in the news media. Functional MR imaging can be performed with high-end clinical imaging equipment, and the primary technical skill required for good imaging results is image analysis and interpretation. Yet, surprisingly, most functional MR imaging studies are performed without the active involvement of a radiologist, and most of the specialized expertise and tools required for functional MR imaging reside within other departments. While I will argue that the current clinical applications of functional MR imaging are limited, the breadth and volume of research employing this and related techniques suggest a continually growing clinical role. Because radiologists bring unparalleled experience with image assessment and the practical issues of clinical imaging, they can serve an essential role in realizing the clinical potential of functional MR imaging. This will not be possible, however, until functional MR imaging is used more widely and taught within radiology departments.