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ST 3.1 –
Protección radiológica en radiodiagnóstico (orientada a intervencionismo)
IMPLEMENTATION OF RADIATION DOSE OPTIMIZATION IN
HEMODYNAMIC ARC
Caggiano Santos
1
; Sardinha, Wander
1
; Dias, Silfayner
1
; Trevisan,
Fernando
1
; Tenório, Guilon
1
; Lourenco, Jose Carlos
2
; Schelin, Hugo
2
*;
Denyak, Valeriy
3
; Paschuk, Sergei
4
1
Londrina State University. Brasil.
2
Federal University of Technology – Paraná. Brasil.
3
Pelé Pequeno Príncipe Research Institute. Brasil.
4
Federal University of Technology – Paraná. Brasil.
* Responsible author, email: schelin2@gmail.com
The objective of this study was to implement the Radiological Protection Optimization Principle
for radiation doses received by the medical staff at the University Hospital of the State
University of Londrina (HU/UEL) in Angioradiology and Endovascular Surgery. For this the
speed of the interventional procedure, the exposure ratefluoroscopy (eps) and the image quality
and radiation dose rates were measured. The rates were calculated in interventional procedures
performed by medical staff in the regions of interest. In the radiation dose tests two acrylic
phantoms and a 280 cm
3
air volume ionization chamber detector model 9DP - Ludlum were
used. In these tests have been introduced the guide and catheter in the phantoms with speed of
5 to 15 mm/s, simulating regions of interest in interventional procedures. The fluoroscopic
exposure rate varied from 5 to 15 eps, the radiation doses were measured on-line with the
detector in a one second rate, and the quality of images studied. The results of these tests
showed that it is possible to work with 7.5 eps fluoroscopy with no change in image quality for
the Angioradiology and Endovascular Surgery specialty. It was found that with this optimization
procedure, the radiation dose was reduced by 50% in the entire staff and in the patient. This
technique is now being applied at the Hemodynamic Arc of the HU/UEL. Work supported by
CNPq, CAPES and Fundação Araucária.