Method and system for performing upright magnetic resonance imaging of various anatomical and physiological conditions
Vasculature or parenchyma is imaged using upright MRI techniques, on patients who may have conditions such as congestive heart failure, or otherwise be healthy. When an individual is horizontal, venous drainage is minimized, causing the vessels to remain engorged, also referred to herein as vascular congestion. Vascular congestion results in an enlarging of the vessels and surrounding tissue causing the vessels to be more visible on MRIs. The decrease in vascular visibility in upright subjects is in part, due to an increase in venous drainage. Patients suffering from coronary and/or pulmonary deficiencies (e.g. CHF) experience decreased rates and degrees of venous drainage. In one embodiment, the present invention uses upright imaging to visualize these enlarged vessels.
1. A method for evaluating magnetic resonance signals, comprising the steps of:
positioning the patient in a recumbent position in the magnetic resonance imaging apparatus;
obtaining magnetic resonance signals of at least one of the patient's vasculature and parenchyma of one or more organs;
positioning the patient in an upright position in the magnetic resonance imaging apparatus
obtaining magnetic resonance signals of at least one of the patient's vasculature and parenchyma of the one or more organs;
generating a first image signal corresponding to the magnetic resonance signals captured in the recumbent position and a second image signal corresponding to the magnetic resonance signals captured in the upright position;
comparing an intensity of the first image signal with an intensity of the second image signal to evaluate gravitational effects on the one or more organs and to generate a comparison result of the intensity of the first image signal relative to the intensity of the second image signal; and
indicating the presence of congestive heart failure based on the comparison result.
2. The method of claim 1 , comprising determining the presence of fluid in the organ or organs where the comparison result indicates an intensity of the second image signal is less than an intensity of the first image signal.
3. The method of claim 1 , wherein the magnetic resonance signals are used to create an image.