Publications by authors named "R Casse"
Cognitive dysfunction is frequently reported in individuals with postural orthostatic tachycardia syndrome (POTS), possibly resulting from reduced cerebral blood flow (CBF). We used brain SPECT, an accessible imaging modality that has not been systematically evaluated in this patient group. Retrospective review of participants from our registry was undertaken to identify those who had a brain SPECT performed for investigation of cognitive dysfunction.
View Article and Find Full Text PDFBackground: Recent single photon emission computed tomography (SPECT) studies have reported age related increases in regional brain perfusion (called preservation here) as well as losses.
Aim: To apply optimized SPECT processing to better define and understand both age related preservation and loss in brain SPECT.
Methods: Brain SPECT was performed on 85 healthy subjects using Tc hexamethylpropylene amine oxime (HMPAO), processed using findings from recent optimization work, and subjected to voxel based statistical analysis.
Purpose: This review examines the current role of positron emission tomography (PET) in the investigation and management of patients with epilepsy.
Procedures: A literature review utilizing MEDLINE(R) and other sources was undertaken. For the comparison of the accuracy of PET with magnetic resonance imaging (MRI) for seizure focus localization, only publications since 1994 were examined.
Aim: This study sought to obtain an estimate of the prevalence of multiple sclerosis (MS) in the Australian Capital Territory (ACT), a largely urban region that differs climatically and socioeconomically from other Australian cities examined in previous MS surveys.
Methods: Prevalence day was chosen to coincide with the 1996 National Census. All ACT neurologists' records for the previous 5 years were examined and cases of MS were classified according to the published diagnostic criteria of Rose et al.
Objective: To estimate the prevalence of Huntington disease (HD) in New South Wales on Australian Census Day (6 August) 1996.
Design: Survey of records of the Huntington Disease Service and major hospitals, and of neurologists, psychiatrists, clinical geneticists and genetic counsellors.
Subjects And Setting: All patients in NSW who, on Census Day 1996, either had a definite diagnosis of HD (motor signs of chorea or ataxia and family history of HD or positive DNA test result) or would have had signs and later received a definite diagnosis (assessed 1 April 1997 to 1 July 1999).