Background/introduction
An automatic dose monitoring system was implemented at the Department of Radiology in 2015.
During this period DICOM Dose reports of all interventional and neurointerventional procedures were automatically transferred to a computer data base.
The goal of this study was to evaluate the number of high dose procedures,
to identify procedures with a high risk of excessive dose and to analyse operator,
patient and procedure dependent factors contributing to excessive dose.
Description of activity and work performed
Methods:
We retrospectively analyzed the DICOm Dose reports of fluoroscopically guided interventional (IR) and neuro-interventional (NIR) procedures performed between January 2016 and December 2018.
Procedures with a Cumulative Air Kerma at reference point (CAK) ≥4 Gy were considered to be a high dose procedures.
CAK >4 Gy triggers an automatic dose alert to a Medical Physics Expert and the operator.
In addition,
a web-based automatic dose monitoring software was used to identify all procedures exceeding 4 Gy CAK.
Skin dose and dose to critical organs...
Conclusion and recommendations
Dose monitoring software is a valuable tool to identify high radiation dose procedures.
Overall 40 procedures exceeding 4 Gy were documented over a 3-year period.
The most common procedure types were abdominal/pelvic embolisation and coiling of an intracranial aneurysm.
Interventional procedures within the IR group resulted in the highest radiation doses.
The majority of patients in this group was overweight or obese with a median BMI of 32 kg/m² (26,8 – 36,5).
Short term skin reactions were not observed.
Personal/organisational information
P.
Poskaite,
MD
Medical University of Innsbruck,
Department of Radiology.
Medizinische Universität Innsbruck
Univ.-Klinik für Radiologie
Anichstraße 35
6020 Innsbruck,
Austria
e-mail:
[email protected]
References
https://rpop.iaea.org/safrad/.
B.C.
Perry et al.,Monitoring and Follow-Up of High Radiation Dose Cases in Interventional Radiology,
Academic Radiology,
Elsevier,
19.06.2018.
H.
Jarvinen et al.,
Feasibility of setting up generic alert levels for maximum skin dose in fluoroscopically guided procedures,
Physica Medica 46,
67-74,
02.2018.
