Arterial Spin-Labeled Perfusion Imaging Reflects Vascular Density in Nonfunctioning Pituitary Macroadenomas
نویسندگان
چکیده
منابع مشابه
Arterial spin-labeled perfusion imaging reflects vascular density in nonfunctioning pituitary macroadenomas.
BACKGROUND AND PURPOSE Angiogenesis is very important in clinical features of pituitary adenomas. We investigated the relationship between the blood flow of nonfunctioning pituitary macroadenomas measured by arterial spin-labeled perfusion imaging and the microvessel attenuation of the tissue. MATERIALS AND METHODS Conventional MR imaging with contrast-enhanced T1WI and arterial spin-labeled ...
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Perfusion refers to the delivery of oxygen and nutrients to tissues by means of blood flow and is one of the most fundamental physiological parameters. Disorders of perfusion also account for most of the leading causes of medical disability and mortality. While measurements of perfusion are of direct diagnostic value in vascular disorders, perfusion measurements also serve as biomarkers for a b...
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Nonfunctioning pituitary macroadenomas (NFMA) make up 20% of pituitary adenomas. Previous studies have shown that patients treated for NFMA have disturbances in sleep characteristics, circadian movement rhythm, subjective sleep quality, and decreased quality of life. Furthermore, studies have shown that NFMA patients have an increased risk for the metabolic syndrome and insulin resistance. Desp...
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Arterial spin labeling is a magnetic resonance method for the measurement of cerebral blood flow. In its simplest form, the perfusion contrast in the images gathered by this technique comes from the subtraction of two successively acquired images: one with, and one without, proximal labeling of arterial water spins after a small delay time. Over the last decade, the method has moved from the ex...
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ژورنال
عنوان ژورنال: American Journal of Neuroradiology
سال: 2013
ISSN: 0195-6108,1936-959X
DOI: 10.3174/ajnr.a3564