Maintaining Image Quality While Reducing Acoustic Noise and Switched Gradient Field Exposure During Lumbar <scp>MRI</scp>

Novel X-ray image noise reduction technology reduces patient radiation dose while maintaining image quality in coronary angiography

AIMS The consequences of high radiation dose for patient and staff demand constant improvements in X-ray dose reduction technology. This study assessed non-inferiority of image quality and quantified patient dose reduction in interventional cardiology for an anatomy-specific optimised cine acquisition chain combined with advanced real-time image noise reduction algorithms referred to as 'study ...

Novel X-ray image noise reduction technology reduces patient radiation dose while maintaining image quality in coronary angiography

Free energy cost of reducing noise while maintaining a high sensitivity.

Living systems need to be highly responsive, and also to keep fluctuations low. These goals are incompatible in equilibrium systems due to the fluctuation dissipation theorem (FDT). Here, we show that biological sensory systems, driven far from equilibrium by free energy consumption, can reduce their intrinsic fluctuations while maintaining high responsiveness. By developing a continuum theory ...

Reducing Compressor Noise While Considering System Interactions

Refrigerant compressors can be a primary noise source in residential air conditioning and heat pump systems. When evaluating the contribution of a compressor to the total noise, it is necessary to consider how the compressor couples to the condensing unit. Compressors typically couple to the condensing unit via three different types of noise paths. First, the compressor couples structurally to ...

Reduction in radiation (fluoroscopy) while maintaining safe placement of pedicle screws during lumbar spine fusion.

STUDY DESIGN Prospective, randomized, controlled study. OBJECTIVE To report the results of using the PediGuard (SpineGuard, Inc., San Francisco, CA), a local electrical conductivity measurement device, to reduce radiation exposure while drilling the pilot hole for pedicle screw placement. SUMMARY OF BACKGROUND DATA Reports of pedicle screw placement in the lumbar spine have shown medial ped...