Reza Nemati1, Mohamad Ali Nayeri2, Negar Chabi2, Zahra Akbari1, Esmail Jafari2, Hossein Shooli2, Habibollah Dadgar3, Majid Assadi2. 1. Department of Neurology, Bushehr Medical University Hospital, School of Medicine, Bushehr University of Medical Sciences, Bushehr, Iran. 2. The Persian Gulf Nuclear Medicine Research Center, Department of Molecular Imaging and Radionuclide Therapy (MIRT), Bushehr Medical University Hospital, School of Medicine , Bushehr University of Medical Sciences, Bushehr, Iran. 3. Razavi Cancer Research Center, Razavi Hospital, Imam Reza International University, Mashhad, Iran.
Abstract
OBJECTIVES: The purpose of this study was to investigate regional cerebral blood flow (rCBF) reduction in patients with dizziness and perfusion-related clinical impairment using brain perfusion single photon emission tomography (SPECT). METHODS: Thirty-four patients with subjective dizziness and 13 age- and sex-matched healthy controls were studied. Dizziness-related impairments were assessed using the Dizziness Handicap Inventory (DHI) and Short Physical Performance Battery (SPPB). Brain perfusion SPECT scan was acquired from all participants. The carotid intima-media thickness (CIMT) was also measured. Brain perfusion data were qualitatively interpreted in all cases. Voxel-wise analysis was also conducted in 11 patients compared to healthy controls. RESULTS: Thirty-four patients (mean age=53.8±13.4 years, m/f: 19/15) and 13 age- and sex-matched controls (mean age=51.5±13.1, m/f: 7/6) were included. The dizziness severity was mild in 58.8% (n=20), moderate in 26.5% (n=9), and severe in 14.7% (n=5). Qualitative interpretation of SPECT images showed normal scans in 4 (11.2%) patients and abnormal scans in 30 (88.2%) patients. Patients with dizziness showed a significantly decreased brain perfusion in the precuneus, cuneus, occipital lobe (superior and inferior parts), frontal lobe (inferior and middle parts), temporal lobe, parietal lobe (inferior and superior parts), cerebellum, insula, and putamen nucleus. Based on both qualitative SPECT interpretation and voxel-wise analysis, perfusion defect had a significant association with the total SPPB score and the scores of two sub-domains (p<0.05), but not with the DHI (p>0.05) score. CONCLUSION: The perfusion- and atherosclerosis-related impairments of gait and balance were largely independent of subjective dizziness and dizziness severity. Moreover, this study provided support for contribution of perfusion impairment to the disturbance of gait and balance in older populations along with other pathologic processes.
OBJECTIVES: The purpose of this study was to investigate regional cerebral blood flow (rCBF) reduction in patients with dizziness and perfusion-related clinical impairment using brain perfusion single photon emission tomography (SPECT). METHODS: Thirty-four patients with subjective dizziness and 13 age- and sex-matched healthy controls were studied. Dizziness-related impairments were assessed using the Dizziness Handicap Inventory (DHI) and Short Physical Performance Battery (SPPB). Brain perfusion SPECT scan was acquired from all participants. The carotid intima-media thickness (CIMT) was also measured. Brain perfusion data were qualitatively interpreted in all cases. Voxel-wise analysis was also conducted in 11 patients compared to healthy controls. RESULTS: Thirty-four patients (mean age=53.8±13.4 years, m/f: 19/15) and 13 age- and sex-matched controls (mean age=51.5±13.1, m/f: 7/6) were included. The dizziness severity was mild in 58.8% (n=20), moderate in 26.5% (n=9), and severe in 14.7% (n=5). Qualitative interpretation of SPECT images showed normal scans in 4 (11.2%) patients and abnormal scans in 30 (88.2%) patients. Patients with dizziness showed a significantly decreased brain perfusion in the precuneus, cuneus, occipital lobe (superior and inferior parts), frontal lobe (inferior and middle parts), temporal lobe, parietal lobe (inferior and superior parts), cerebellum, insula, and putamen nucleus. Based on both qualitative SPECT interpretation and voxel-wise analysis, perfusion defect had a significant association with the total SPPB score and the scores of two sub-domains (p<0.05), but not with the DHI (p>0.05) score. CONCLUSION: The perfusion- and atherosclerosis-related impairments of gait and balance were largely independent of subjective dizziness and dizziness severity. Moreover, this study provided support for contribution of perfusion impairment to the disturbance of gait and balance in older populations along with other pathologic processes.
Authors: Ping Lei Pan; Hai Cun Shi; Jian Guo Zhong; Pei Rong Xiao; Yuan Shen; Li Juan Wu; Yuan Ying Song; Gui Xiang He; Hua Liang Li Journal: Neurol Sci Date: 2012-11-27 Impact factor: 3.307
Authors: Rita Pavasini; Jack Guralnik; Justin C Brown; Mauro di Bari; Matteo Cesari; Francesco Landi; Bert Vaes; Delphine Legrand; Joe Verghese; Cuiling Wang; Sari Stenholm; Luigi Ferrucci; Jennifer C Lai; Anna Arnau Bartes; Joan Espaulella; Montserrat Ferrer; Jae-Young Lim; Kristine E Ensrud; Peggy Cawthon; Anna Turusheva; Elena Frolova; Yves Rolland; Valerie Lauwers; Andrea Corsonello; Gregory D Kirk; Roberto Ferrari; Stefano Volpato; Gianluca Campo Journal: BMC Med Date: 2016-12-22 Impact factor: 8.775