RADIOTHERAPY RISK PROFILE - World Health Organization

14
Year(s) Country Economic group Stage of therapy Cause/contributing
factors of error
1999–2003 Japan High income Planning Output factor input error in renewal
of treatment planning system
1999–2004 Treatment Insufficient dose delivery caused
delivery by an incorrect operation
of dosimeter
2000–2001 Panama Upper middle Planning Error shielding block related
income data entry into TPS resulted
in prolonged treatment time
2001 Poland Upper middle Treatment Failure of safety system on a
income delivery Linac after power failure
2003 Japan High income Planning & Input error of combination of
Information transfer total dose and
transfer fraction number
2003–2004 Planning & Misapplication of tray factor
Information to treatment delivery without tray
transfer
2004–2005 France High income Planning Wrong setting of the linear
accelerator after introduction of
new treatment planning system
(TPS) (static wedges changes to
dynamic wedges but dose intensity
modification not done)
Information Miscommunication of field size
transfer & estimation, error in patient
Treatment identification, incorrect
delivery implantation of source during
brachytherapy
2004–2007 Canada High income Planning Incorrect output determinations
for field sizes other than the
calibration field size for superficial
skin treatments.
2005–2006 UK High income Planning Change in operational procedures
while upgrading the data
management system resulting in
incorrect treatment dose