brain single photon emission computed tomography in anosmic subjects after closed head trauma
نویسندگان
چکیده
anosmia following head trauma is relatively common and in many cases is persistent and irreversible. the ability to objectively measure such a decline in smelling, for both clinical and medicolegal goals, is very important. the aim of this study was to find results of brain single photon emission computed tomography (spect) in anosmic subjects after closed head trauma. this case-control cross sectional study was conducted in a tertiary referral university hospital. the brain perfusion state of nineteen anosmic patients and thirteen normal controls was evaluated by means of the spect with 99mtc- ecd infusion- before and after olfactory stimulation. the orbitofrontal lobe of the brain was assumed as the region of interest and changes in perfusion of this area before and after the stimulations were compared in two groups. the mean of brain perfusion in controls before and after the stimulation was 8.26% ± 0.19% and 9.89% ± 0.54%, respectively (p < 0.0001). among patients group, these quantities were 7.97% ± 1.05% and 8.49% ± 1.5%, respectively (p < 0.004). the difference between all the measures in cases and controls were statistically significant (p < 0.0001). there were no differences in age and sex between two groups. the brain spect is an objective technique suitable for evaluating anosmia following the head trauma and it may be used with other diagnostic modalities.
منابع مشابه
Brain single photon emission computed tomography in anosmic subjects after closed head trauma.
Anosmia following head trauma is relatively common and in many cases is persistent and irreversible. The ability to objectively measure such a decline in smelling, for both clinical and medicolegal goals, is very important. The aim of this study was to find results of brain Single Photon Emission Computed Tomography (SPECT) in anosmic subjects after closed head trauma. This case-control cross s...
متن کاملSingle photon emission computed tomography (SPET) of the brain.
The X-Ray CT scanner and MRI imaging of the brain have changed the study of this organ, in health and in disease. To add to the detailed demonstration of anatomy, functional imaging of the human brain is now carried out by either positron emission computed tomography (PET) or by single photon emission computed tomography (SPET). PET allows for the investigation of brain blood flow, metabolism a...
متن کاملPrinciples of brain single-photon emission computed tomography imaging
PRINTED FROM OXFORD MEDICINE ONLINE (www.oxfordmedicine.com). © Oxford University Press, 2015. All Rights Reserved. Under the terms of the l icence agreement, an individual user may print out a PDF of a single chapter of a title in Oxford Medicine Online for personal use (for details see Privacy Policy). Subscriber: Habib Zaidi; date: 27 November 2015 Publisher: Oxford University Press Print Pu...
متن کاملPositron emission tomography and single photon emission computed tomography.
Neuroimaging techniques have had a dramatic impact on the evaluation and treatment of patients with epilepsy. In order to take full advantage of their potential, it is important to place them in clinical and electrophysiological context and to understand their technical limitations. Positron emission tomography with 18F-2-deoxyglucose and single photon emission computed tomography can provide v...
متن کاملImage Optimization in Single Photon Emission Computed Tomography by Hardware Modifications with Monte Carlo Simulation
Introduction: In Single Photon Emission Computed Tomography (SPECT), the projection data used for image reconstruction are distorted by several factors, including attenuation and scattering of gamma rays, collimator structure, data acquisition method, organ motion, and washout of radiopharmaceuticals. All these make reconstruction of a quantitative SPECT image very difficult. Simulation of a SP...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
acta medica iranicaجلد ۴۹، شماره ۱، صفحات ۱۳-۱۷
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023