Brain SPET and auditory cortex perfusion. Technical notes and preliminary results.
Auditory cortex stimulation was studied by 99Tcm-hexamethylpropyleneamine oxime (HMPAO) single photon emission tomography (SPET) in 11 patients with normal vestibular and auditory tests, as well as computed tomography. Markedly increased temporal and parietal blood flows were found in left brain cortex, contralateral to the stimulus. The right auditory areas showed moderate hyperactivity. The method might be useful for tonotopic mapping of auditory cortex, using various pure tonal stimuli.
Istituto di Medicina Nucleare, Universita Cattolica Sacro Cuore, Rome, Italy.
G
G
De Rossi
A
A
Giordano
M L
ML
Calcagni
W
W
Di Nardo
J
J
Galli
G
G
Paludetti
D000161:Acoustic Stimulation; D000328:Adult; D000368:Aged; D001303:Auditory Cortex / Q000098:blood supply / Q000503:physiopathology*; D001921:Brain / Q000000981:diagnostic imaging*; D007839:Functional Laterality; D006801:Humans; D007822:Laryngeal Neoplasms / Q000000981:diagnostic imaging*; D008875:Middle Aged; D015609:Organotechnetium Compounds; D010091:Oximes; D010610:Pharyngeal Neoplasms / Q000000981:diagnostic imaging*; D012039:Regional Blood Flow; D019690:Technetium Tc 99m Exametazime; D013702:Temporal Lobe / Q000098:blood supply / Q000000981:diagnostic imaging*; D015899:Tomography, Emission-Computed, Single-Photon
D015609:Organotechnetium Compounds; D010091:Oximes; D019690:Technetium Tc 99m Exametazime