Quantitative sodium imaging with a flexible twisted projection pulse sequence
نویسندگان
چکیده
منابع مشابه
SCALE PWI: A Pulse Sequence for Quantitative Cerebral Perfusion Imaging
INTRODUCTION Quantitative cerebral perfusion is a fundamental physiologic parameter that reflects the severity and progression of a broad range of pathologies including: cancer, stroke, Alzheimer’s Disease, and cerebrovascular occlusive disease. The “Bookend” technique [1,2] allows quantification of cerebral blood flow (CBF) and cerebral blood volume (CBV) with dynamic susceptibility contrast (...
متن کاملMeasuring human cardiac tissue sodium concentrations using surface coils, adiabatic excitation, and twisted projection imaging with minimal T2 losses.
PURPOSE To measure tissue sodium concentrations in the human heart with (23)Na MRI using a surface coil, thereby eliminating the effects of inhomogeneous excitation by surface coils and minimizing T(1) and T(2) relaxation. MATERIALS AND METHODS We combined fully relaxed, very short-echo, (23)Na twisted projection imaging (TPI) with adiabatic half passage (AHP) excitation and external referenc...
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A fundamental functional principle of animal cells is their ability to store energy across the plasma membrane in form of ion gradients. This is mainly realized by the activity of the Na/K-ATPase, which consumes ATP to establish an inwardly directed gradient for sodium ions. In the brain, the sodium gradient not only drives many transport processes across the plasma membrane, but also provides ...
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The Bookend technique is a magnetic resonance imaging (MRI) dynamic susceptibility contrast method that provides reliable quantitative measurement of cerebral blood flow (CBF) and cerebral blood volume (CBV). The quantification is patient specific, is derived from a steady-state measurement of CBV, and is obtained from T(1) changes in the white matter and the blood pool after contrast agent inj...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2010
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.22381