Table 1.

A comparison of IB and XB methods of IORT

	Source	Dose at Surface	Dose at 1-cm Depth	Applicator Type	Treatment Time
IB	50 kV x-rays	20 Gy	5 Gy	Solid Spherical	20 – 45 minutes*
XB	50 kV x-rays	20 Gy	9–10 Gy	Balloon Catheter	17–26 minutes*

IB = Intrabeam™, XB = Xoft™, kV = kilovoltage, Gy = Gray.

* – Treatment time is dependant on applicator diameter used