Abstract: Methods, devices and systems are described for evaluating an initial orthostatic response of an individual during an orthostatic test. For example, the method may include: receiving a pulse signal obtained during an orthostatic test performed from a sensor placed on the individual; identifying a position and an amplitude of the dicrotic notch for pulses in a portion of the pulse signal to obtain a set of dicrotic notch positions and amplitudes; generating an initial orthostatic response curve from the set of dicrotic notch positions and amplitudes; evaluating the initial orthostatic response curve to obtain an assessment of the initial orthostatic response; and displaying, storing and/or transmitting at least one of the initial orthostatic response curve and a visual representation of the assessment of the initial orthostatic response curve.

Abstract: Various embodiments are described herein for a system and a method for monitoring aortic pulse wave velocity and blood pressure. A pulse sensor is located on the exterior of an individual's body at a sensor location that allows acquisition of the pulse signal such that a reflected wave component of the pulse signal is present and allows characterization of reflected wave onset. A pulse signal is received from the pulse sensor and a reflected wave onset point is identified in the pulse signal. A reflected wave ratio is determined at the reflected wave onset point and the aortic pulse wave velocity is determined from the reflected wave ratio. The aortic pulse wave velocity can be displayed to the individual, transmitted to an external device and/or stored.

Abstract: Various embodiments are described herein for a system and a method for monitoring aortic pulse wave velocity and blood pressure. A pulse sensor is located on the exterior of an individual's body at a sensor location that allows acquisition of the pulse signal such that a reflected wave component of the pulse signal is present and allows characterization of reflected wave onset. A pulse signal is received from the pulse sensor and a reflected wave onset point is identified in the pulse signal. A reflected wave ratio is determined at the reflected wave onset point and the aortic pulse wave velocity is determined from the reflected wave ratio. The aortic pulse wave velocity can be displayed to the individual, transmitted to an external device and/or stored.

Abstract: A hybrid medical imaging system comprises a nuclear medicine imaging subsystem for capturing an image of a target region of a subject, a magnetic resonance imaging (MRI) subsystem for capturing an MRI image of the target region based on at least one MRI parameter and processing structure communicating with the subsystems. The processing structure processes the MRI image to estimate attenuation within the target region and uses the estimated attenuation to correct the image captured by the nuclear medicine imaging subsystem.

Abstract: A hybrid medical imaging system comprises a nuclear medicine imaging subsystem for capturing an image of a target region of a subject, a magnetic resonance imaging (MRI) subsystem for capturing an MRI image of the target region based on at least one MRI parameter and processing structure communicating with the subsystems. The processing structure processes the MRI image to estimate attenuation within the target region and uses the estimated attenuation to correct the image captured by the nuclear medicine imaging subsystem.