FDA investigates the safety of brain perfusion CT.
نویسندگان
چکیده
منابع مشابه
Evaluation of role of brain SPECT in diagnosis of post stroke dementia [Persian]
Post stroke dementia is one of the most common complications of stroke that is preventable and relatively treatable too. The purpose of the study is comparison between the positive findings in brain CT scan and brain perfusion SPECT. 15 patients who were complicated by dementia after cerebrovascular accident and also 5 patients as a control group enrolled in this study. Brain CT scan and ...
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Objective: The aim of this study was to evaluate the influences of reconstruction and attenuation correction on the differences in the radioactivity distributions in 123I brain SPECT obtained by the hybrid SPECT/CT device. Methods: We used the 3-dimensional (3D) brain phantom, which imitates the precise structure of gray mater, white matter and bone regions. It was filled with 123I solution (20...
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A 67 years old woman was referred to nuclear medicine center for myocardial perfusion imaging (MPI) for assessment of ischemic heart dieses (IHD).She had a history of atypical chest pain and dyspnea since about 10 days before admission. The MPI SPECT/CT was performed by stress/redistribution Tl-201 protocol. MPI was interpreted as relatively good coronary flow with no appreciable stress induced...
متن کاملPatient safety and the medical physicist.
Overexposures in computed tomography: In several institutions, overexposures have occurred during use of x-ray computed tomography (CT) for brain perfusion studies to identify 10 the neurological consequences of strokes and other events. In some cases, patients received exposures that were several times greater than necessary. The overexposures were caused by use of inappropriate CT protocols f...
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Introduction Fluoroscopicallyand computed tomography (CT)-guided diagnostic and interventional procedures are being performed with increasing frequency worldwide. From 1980 to 2007, annual performance of CT in the U.S. increased from 3 million to 80 million. With this rapid increase in the use of imaging techniques, there has been a concurrent increase in patient exposure to ionizing radiation....
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عنوان ژورنال:
- AJNR. American journal of neuroradiology
دوره 31 1 شماره
صفحات -
تاریخ انتشار 2010