Human Vitreous: MR Imaging of Oxygen Partial Pressure
نویسندگان
چکیده
منابع مشابه
Human vitreous: MR imaging of oxygen partial pressure.
PURPOSE To develop a magnetic resonance (MR) imaging approach to noninvasively image quantitative Po(2) in the human vitreous. MATERIALS AND METHODS Human studies were approved by the institutional review board with informed consent obtained from all subjects and were HIPAA compliant. Animal studies were performed with animal care committee approval. An MR imaging method to measure the longit...
متن کاملVariable Flip Angle MR Imaging of 3He Spin Lattice Relaxation Times for Measurement of Alveolar Oxygen Partial Pressure
INTRODUCTION: Measurement of the spin-lattice relaxation time of helium due to oxygen in the lung (T1,O2) has been proposed as a method for estimation of the regional alveolar oxygen partial pressure, pAO2 (1). In diseased animals, where ventilation and perfusion can be strongly impaired, regional variations in pAO2 are expected and can be used to compute ventilation/perfusion mismatch (2). How...
متن کاملUltrasound imaging velocimetry of the human vitreous.
Knowledge of vitreous motion in response to saccades is a prerequisite for understanding vitreous rheology. Purpose of present paper is to introduce Ultrasound Image Velocimetry of the human eye, measure scleral and vitreous velocity fields and test the reproducibility of the proposed technique. Twelve patients with varying diagnosis underwent Ocular Dynamic Ultrasound; scleral angular velocity...
متن کاملOxygen-enhanced MR imaging of mice lungs.
Inhaled molecular oxygen has been widely used in humans to evaluate pulmonary ventilation using MRI. MR imaging has recently played a greater role in examining the morphologic and physiologic characteristics of mouse models of lung disease where structural changes are highly correlated to abnormalities in respiratory function. The motivation of this work is to develop oxygen-enhanced MR imaging...
متن کاملMathematical Modelling of Intraretinal Oxygen Partial Pressure
Purpose: The aim of our present work is to develop a simple steady state model for intraretinal oxygen partial pressure distribution and to investigate the effect of various model parameters on the partial pressure distribution under adapted conditions of light and darkness.. Method: A simple eight-layered mathematical model for intraretinal oxygen partial pressure distribution was developed us...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Radiology
سال: 2013
ISSN: 0033-8419,1527-1315
DOI: 10.1148/radiol.12120777