pto4dDownload scientific diagram | XPS spectra of Pt4f in ( a ) PtO 2 ; ( b ) a Pt foil, and ( c ) Pt loaded on Zn-TPPDON-14. from publication: Dye Modification Effects on TaON for PhotocatalyticGE 4D CT Perfusion - Free download as PDF File (.pdf), Text File (.txt) or read on for free. GE Healthcare's Perfusion 4D software provides automated analysis of CT perfusion images