• Publications
  • Influence
Cerebral Representation of One’s Own Past: Neural Networks Involved in Autobiographical Memory
We studied the functional anatomy of affect-laden autobiographical memory in normal volunteers. Using H215O positron emission tomography (PET), we measured changes in relative regional cerebral bloodExpand
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The ECAT EXACT HR: Performance of a New High Resolution Positron Scanner
Objective The ECAT EXACT HR is a newly designed CTI–Siemens PET scanner with high spatial resolution. Its physical performance with respect to resolution, count rate efficiency, and scatter wasExpand
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Performance Evaluation of the Positron Scanner ECAT EXACT
The Cologne Special is a prototype of the ECAT EXACT (model 921), a new generation of Siemens-CTI PET scanners. It consists of three rings of 48 BGO block detectors each, covering an axial field ofExpand
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Ischemic Penumbra: Evidence From Functional Imaging in Man
  • W. Heiss
  • Medicine
  • Journal of cerebral blood flow and metabolism…
  • 1 September 2000
The ischemic penumbra is defined as tissue with flow within the thresholds for maintenance of function and of morphologic integrity. Penumbra tissue has the potential for recovery and therefore isExpand
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Differential capacity of left and right hemispheric areas for compensation of poststroke aphasia
As previous functional neuroimaging studies could not settle the controversy regarding the contribution of dominant and subdominant hemisphere to recovery from poststroke aphasia, languageExpand
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Piracetam Improves Activated Blood Flow and Facilitates Rehabilitation of Poststroke Aphasic Patients
Background and Purpose In a prospective, double-blind, placebo-controlled study, it was investigated whether piracetam improves language recovery in poststroke aphasia assessed by neuropsychologicalExpand
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Positron emission tomographic analysis of the nigrostriatal dopaminergic system in familial Parkinsonism associated with mutations in the Parkin gene
A kindred from South Tyrol (northern Italy) with familial, adult‐onset parkinsonism of pseudo‐dominant inheritance and mutations in the parkin gene was recently described. To gain insight into basalExpand
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Plasticity of language networks in patients with brain tumors: A positron emission tomography activation study
We investigated plasticity of language networks exposed to slowly evolving brain damage. Single subject O‐15‐water language activation positron emission tomography studies were analyzed in 61Expand
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Penumbral probability thresholds of cortical flumazenil binding and blood flow predicting tissue outcome in patients with cerebral ischaemia.
Active treatment of acute ischaemic stroke can only be successful as long as tissue in the area of ischaemic compromise is still viable. Therefore, the identification of the area of irreversibleExpand
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An interactive technique for three-dimensional image registration: validation for PET, SPECT, MRI and CT brain studies.
A multipurpose three-dimensional registration technique was validated with PET, SPECT, CT and MRI scans, which had been obtained under normal clinical conditions. Expand
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