Commonly used with manually loaded cesium sources, this source holder has a 5.0 mm diameter opening. The spacer for positioning the cesium source is removable for use with longer cesium sources and larger HDR 192Ir catheters.

REF:

Cesium Sources

70020 (HDR)

Designed for use with LDR remote after-loading treatment systems, this source holder has a 7.1 mm diameter opening. There is no spacer because the after-loading system positions the source.

REF:

Cesium Remote After-Loading Sources

70003 (HDR)