Multiphase Brain CTA calculator

CTA contrast volume
CTA contrast flow rate(大於等於3)
Scan time 1
Scan time 2

CTA - phase 1(Arch->頭頂) PTD1=
CTA - phase 2(頭頂->顱底) PTD2=
CTA - phase 3(顱底->頭頂) PTD3=