Journal of neuroimaging : official journal of the American Society of Neuroimaging
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Review
[123I]FP-CIT (DaTscan) SPECT brain imaging in patients with suspected parkinsonian syndromes.
To review [(123)I]FP-CIT (Ioflupane I 123, DaTscan) SPECT imaging and its role in clinical practice. ⋯ [(123)I]FP-CIT SPECT brain imaging is used to assist in the evaluation of adult patients with suspected PS and may help differentiate ET from PS as an adjunct to other diagnostic evaluations.
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A 48-year-old woman presented with a growing palpable mass at the left frontal area. The imaging studies and histopathological examination of the mass was consistent with dural-based Rosai-Dorfman disease with unusual transcranial extension. We reported this case not only because of its rarity, but also because of the infiltrative pattern. The infiltrative nature presented in this case may be taken into consideration for surgical treatment of intracranial Rosai-Dorfman disease.
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Previous imaging studies in the Machado-Joseph disease (MJD/SCA3) have mostly concentrated on the cerebellum and brainstem. Our goal was to perform a whole brain longitudinal evaluation. ⋯ We confirmed cortical involvement in MJD/SCA3. The most important factors in predicting GMD were age and CAG. The lack of progression of atrophy may indicate floor effect and/or short duration of follow-up.
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Practice Guideline
Practice standards for transcranial Doppler (TCD) ultrasound. Part II. Clinical indications and expected outcomes.
Transcranial Doppler (TCD) is a physiological ultrasound test with established safety and efficacy. Although imaging devices may be used to depict intracranial flow superimposed on structural visualization, the end-result provided by imaging duplex or nonimaging TCD is sampling physiological flow variables through the spectral waveform assessment. ⋯ By defining the scope of practice, these standards will assist referring and reporting physicians and third parties involved in the process of requesting, evaluating, and acting upon TCD results.
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The acquisition of literacy during childhood may affect the functional organization of the brain. We studied the effects of illiteracy on neuropsychological tests and brain glucose metabolism in later life. ⋯ These results suggest that reading and writing during childhood is associated with activation of the frontal pole that may play a critical role in complex aspects of human cognition.