Search Results - "Lexa, F"

Baseline Survey of the Neuroradiology Work Environment in the United States with Reported Trends in Clinical Work, Nonclinical Work, Perceptions of Trainees, and Burnout Metrics by Chen, J Y, Lexa, F J

“…Neuroradiologists have faced continuously increasing clinical workloads. Our aim was to establish and report a baseline survey of the current neuroradiology…”
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MR of sarcoidosis in the head and spine: spectrum of manifestations and radiographic response to steroid therapy by Lexa, FJ, Grossman, RI

“…To evaluate the role of MR in the diagnosis and treatment of patients with neurosarcoidosis. The MR studies of 24 patients who satisfied stringent criteria for…”
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Determination of duplex Doppler ultrasound criteria appropriate to the North American symptomatic carotid endarterectomy trial by CARPENTER, J. P, LEXA, F. J, DAVIS, J. T

“…The North American Symptomatic Carotid Endarterectomy Trail (NASCET) demonstrated the benefit of carotid endarterectomy for symptomatic patients with > or =…”
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Microscopic disease in normal-appearing white matter on conventional MR images in patients with multiple sclerosis: assessment with magnetization-transfer measurements by Loevner, L A, Grossman, R I, Cohen, J A, Lexa, F J, Kessler, D, Kolson, D L

“…To assess for the presence of microscopic abnormalities in otherwise normal-appearing white matter on T2-weighted images in patients with multiple sclerosis…”
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MR of Wallerian degeneration in the feline visual system : characterization by magnetization transfer rate with histopathologic correlation by LEXA, F. J, GROSSMAN, R. I, ROSENQUIST, A. C

“…To examine the utility of measuring magnetization transfer ratio for delineating the dynamic changes of wallerian degeneration which occur after controlled…”
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Magnetization transfer: theory and clinical applications in neuroradiology by Grossman, R I, Gomori, J M, Ramer, K N, Lexa, F J, Schnall, M D

“…Magnetization transfer, a new technique for improving image contrast in magnetic resonance (MR) imaging, is based on application of off-resonance…”
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Extracranial atherosclerotic carotid artery disease: evaluation of non- breath-hold three-dimensional gadolinium-enhanced MR angiography by Slosman, F, Stolpen, AH, Lexa, FJ, Schnall, MD, Langlotz, CP, Carpenter, JP, Goldberg, HI

“…The purpose of this study was to compare the diagnostic information provided by a combination of two-dimensional and three-dimensional (3D) time-of-flight…”
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Magnetization transfer imaging of periventricular hyperintense white matter in the elderly by Wong, KT, Grossman, RI, Boorstein, JM, Lexa, FJ, McGowan, JC

“…To characterize with magnetization transfer imaging the pathologic substrate of the nonspecific periventricular hyperintense white matter changes seen on…”
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Duplex criteria for determination of 50% or greater carotid stenosis by Neschis, D. G, Lexa, F. J, Davis, J. T, Carpenter, J. P

“…Recently the North American Symptomatic Carotid Endarterectomy Trial investigators reported a benefit of carotid endarterectomy compared with medical therapy…”
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Magnetic resonance angiography of the aortic arch by Carpenter, Jeffrey P., Holland, George A., Golden, Michael A., Barker, Clyde F., Lexa, Frank J., Gilfeather, Maryellyn, Schnall, Mitchell D.

“…Duplex ultrasound and magnetic resonance angiographic (MRA) studies are the principal noninvasive methods for evaluation of extracranial occlusive disease in…”
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Magnetization transfer imaging of traumatic brain injury by Bagley, Linda J., McGowan, Joseph C., Grossman, Robert I., Sinson, Grant, Kotapka, Mark, Lexa, Frank J., Berlin, Jesse A., McIntosh, Tracy K.

“…Magnetization transfer imaging (MTI) has been shown to be sensitive for the detection of white matter abnormalities in entities such as multiple sclerosis,…”
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Deep gray matter hypointensity patterns with aging in healthy adults: MR imaging at 1.5 T by Milton, W J, Atlas, S W, Lexa, F J, Mozley, P D, Gur, R E

“…The authors studied a carefully screened pool of healthy adult volunteers aged 20-80 years, so that a normal brain deep gray matter hypointensity map, as…”
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Determination of sixty percent or greater carotid artery stenosis by duplex Doppler ultrasonography by Carpenter, Jeffrey P., Lexa, Frank J., Davis, Julia T.

“…Purpose: The Asymptomatic Carotid Atherosclerosis Study, demonstrating the benefit of carotid endarterectomy for symptom-free patients with 60% or greater…”
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Herpes zoster ophthalmicus with orbital pseudotumor syndrome complicated by optic nerve infarction and cerebral granulomatous angiitis: MR-pathologic correlation by Lexa, FJ, Galetta, SL, Yousem, DM, Farber, M, Oberholtzer, JC, Atlas, SW

“…The authors describe a 41-year-old woman with herpes zoster ophthalmicus and extensive intracranial and orbital involvement as documented by MR and…”
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MRI of carotid angiopathy after therapeutic radiation by Chung, T S, Yousem, D M, Lexa, F J, Markiewicz, D A

“…Our goal was to assess whether significant secondary atherosclerotic changes from radiation can be detected on SE MR of the neck. Pre- and postradiation MR…”
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Rhabdomyosarcomas in the head and neck: MR imaging evaluation by Yousem, D M, Lexa, F J, Bilaniuk, L T, Zimmerman, R I

“…To determine the typical magnetic resonance (MR) signal intensity characteristics of rhabdomyosarcomas, short repetition time (TR)/short echo time (TE)…”
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Neuroradiological manifestations of acquired immunodeficiency syndrome by Lexa, F J

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Use of magnetisation transfer contrast to improve cerebral 3D MR angiography by DOUSSET, V, FRANCONI, J. M, DEGREZE, P, BALDERRAMA, J, LEXA, F, CAILLE, J. M

“…To improve 3D-time of flight (3D-TOF) magnetic resonance angiography, we used magnetisation transfer (MT) to increase the contrast between flowing blood and…”
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Drug-induced disorders of the central nervous system by Lexa, Frank J.

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Detection of early axonal degeneration in the mammalian central nervous system by magnetization transfer techniques in magnetic resonance imaging by Lexa, F J, Grossman, R I, Rosenquist, A C

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