W1951 USAF resolution test chart
WANNINE-6plus
WApple Scanner
WBioluminescence imaging
WDiffusion MRI
WDigital variance angiography
WFörster resonance energy transfer
WFree-form select
WHyperspectral imaging
WKinetic imaging
WMETATOY
WMultispectral image
WNanoscale secondary ion mass spectrometry
WNeutron imaging
WPara-Nitroblebbistatin
WNoesis (software)
WOsiriX
WPanomorph
WPhase-contrast X-ray imaging
WPhotoacoustic microscopy
WPrior Scientific
WRaking light
WSchlieren imaging
WSpatiospectral scanning
WStress wave tomography
WVoxel-based morphometry