High-intensity focused ultrasound (HIFU) is a promising non-invasive thermal ablation technique.
Unlike diagnostic ultrasound, HIFU focuses the ultrasound waves precisely upon a target. In a similar way to how light can be focused to a burning point by a magnifying glass, ultrasound passes thro...
Image plate artifact is caused by backscatter radiation.
Backscatter radiation is transmitted through the back of the cassette to the cassette hinge where the lead coating gets weakened or cracked.
To reduce backscatter, the radiographer should collimate where possible.
Pixel shift or reregistration is a post-processing technique used to improve misregistration artefact in digital subtraction angiography, where two images to be subtracted are spatially realigned with respect to one another, by shifting pixels vertically, horizontally or obliquely.