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ST 3.1 –
Protección radiológica en radiodiagnóstico (orientada a intervencionismo)
ESTIMATION OF ORGAN DOSES OF PATIENT UNDERGOING HEPATIC
CHEMOEMBOLIZATION PROCEDURES
Jaramillo Garzón, William
1
*; Khoury, Helen
1
; Kramer, Richard
1
;
Cassola, Vagner
1
; Saito Monteiro de Barros, Vinicius
1
; Andrade, Gustavo
2
1
Universidade Federal de Pernambuco. Brasil.
2
ANGIORAD. Brasil.
*Responsible author, email: wjaramig@gmail.com
Hepatic chemoembolization interventional procedures have been recognized for delivering high
skin doses to patients. In many cases patients require repeated chemoembolizations to be
performed for the same lesion. Re-irradiation of the skin and organs may significantly increase
the probability of radiation effects. Several studies have reported the maximum skin dose and
the air-kerma area product (KAP) for the assessment of patient radiation exposure for this
procedure. However few investigations of organ and effective dose estimates have been done.
In this study the organ and tissue absorbed doses, as well the effective dose for fifty patients
undergoing hepatic chemoembolization procedures in two hospitals in the city of Recife-Brazil
were estimated. For this purpose KAP to effective dose conversion factors were calculated
using the mesh-based phantoms FASH and MASH coupled to the EGSnrc Monte Carlo code.
Clinical, dosimetric and irradiations parameters were registered for all patients. The maximum
organ doses found were 2439.2 mGy, 854.10 mGy, 758.94 mGy and 443.28 mGy for skin,
kidneys, adrenals and liver, respectively.