This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1989-01-01 edition. Excerpt: . subject with proper alignment of the planes of section. This will be both expensive and time-consuming; however, at least in selected cases (., cases of aging and dementia with brain atrophy), such an interaction will be essential. More speculative will be the use of MRI to further constrain PET data by defining gray-white matter differences. COGNITIVE CONSEQUENCES OF BRAIN DAMAGE OR ALTERATIONS This approach allows for.