Abstract: An apparatus, system, and method are disclosed for a centrifugal turbine engine. The engine includes an engine block with a raceway comprising an inner diameter, a compression ramp, and an exhaust ramp and a rotor disposed within the engine block such that the rotor rotates within the inner diameter of the engine block. The rotor includes a plurality of vanes attached to the rotor such that the vanes retract as each vane sweeps across the compression ramp and the exhaust ramp and extend as each vane passes the compression ramp and the exhaust ramp. The extension is restricted such that the vane does not contact the inner diameter of the engine block during at least a portion of a combustion stroke. Beneficially, the engine is more efficient and reliable than existing engines.

Abstract: Methods and systems for controlling exposure for medical imaging devices is provided. The method includes varying the exposure level of X-rays within an X-ray imaging system to generate a plurality of images having different exposure levels and combining the plurality of images in an additive process to form a single X-ray image.

Abstract: Certain embodiments of the present invention relate to a dynamic power management system. The system includes a power input providing power to an imaging system, measurement unit(s) for measuring current and/or voltage in the imaging system, and a power management controller allocating available power among components in the imaging system. The power management controller may allow a battery to charge at a maximum rate based on current used by the imaging system components. The measurement unit(s) may measure a voltage and a current for the power provided to the imaging system. The power management controller may control current drawn by the imaging system components. The system may also include a limit sensor for detecting when current consumption exceeds a certain limit. Additionally, the system may include at least one switching unit controlled by the power management controller. The switching unit(s) control an amount of power routed to imaging system components.