Congress:
EuroSafe Imaging 2020
Keywords:
Action 4 - Dose management systems, Biliary Tract / Gallbladder, Interventional vascular, Liver, Fluoroscopy, Dosimetry, Radiation safety, Education and training, Retrospective, Observational, Performed at one institution
Authors:
R. Gerasia, C. Caruso, A. Cucchiara, G. S. Gallo, S. Maggio, C. Tafaro, R. Miraglia
DOI:
10.26044/esi2020/ESI-03724
Conclusion and recommendations
N=191 pediatric interventional procedures were performed. TABLE 2 shows acquisition parameters, table vertical position, DAP, AK and FT for all the interventional procedures included in this study.
Mean of DAP, AK and FT of all procedures included were respectively 13.84 Gy*cm2 ,0.06 Gy and 5.1 minutes. In addition, as showed in the Figure 1, the software allows to have information about the SID, the percentage of DAP coming from DSA acquisitions or fluoroscopy, the percentage of number of magnifications and frame rate used.
Alert was encountered only one time (alert quota, 0,5 %): the highest dose values was seen in hepatic artery embolization (KAP 518 Gy/cm2, AK 3.04 Gy, FT 19.8 min). Details about this procedures, including Cumulative Dose Incidence Maps, are shown in Figure 2.
The good practice to monitor and record radiation doses throughout the procedure provides important information regarding the overcoming of dose threshold above all during complex pediatric procedures also when a low dose protocol is employed.
The alert system included on the software give us the real-time information about the possibility of exceeding the threshold dose and help us to be sure to work properly and safely. Adjustment of technical parameters related to the patient and to the difficulties that may be encountered during individual procedures together with operator choice of fluoroscopy protocol helped us to maintain the patients’ doses at relatively contained levels. As showed in the incidence map of the procedure with the highest AK (Figure 2), the abdominal regions exposure is far below 2 Gy and it the alert quota obtained (0,5 % %) suggest us to set the alerts dose value down to our local DRLs to better control relatively high dose procedure.