Experimental evaluation of PCXMC and prepare codes used in conventional radiology.
The objective of this study is to evaluate the precision of dose-calculation computer codes used in our laboratory (PCXMC and PREPARE) for organ dose evaluation. Measurements of entrance and organ dose were performed using ionisation chamber and thermoluminescence dosimetry. To obtain a mean dose of organ, we have used the Rando-Alderson phantom. The results showed that computed and measured doses correlate well (within 28%) in 60% of the samples. The percentage shows that the computed doses correlate with the experimental doses rather well for PCXMC software than PREPARE. Although the two programs are based on the Monte-Carlo method, their calculations differ. PCXMC carries out a simulation of the trajectory of the photon, whereas PREPARE provides interpolated values. Our experimental results are close to the values given by the PCXMC, a program which takes into account the weight, the height of the patient and field dimensions.
Khelassi-Toutaoui
N
N
Département de Physique Médicale, Centre de Recherche Nucléaire d'Alger 2, Boulevard Frantz Fanon, B.P. 399, Alger-Gare, Algeria. nadiakhelassi@comena-dz.org
Berkani
Y
Y
Tsapaki
V
V
Toutaoui
A E K
AE
Merad
A
A
Frahi-Amroun
A
A
Brahimi
Z
Z
D000465:Algorithms; D003198:Computer Simulation; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D011859:Radiography; D011871:Radiology / Q000379:methods*; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods*; D013909:Thorax / Q000528:radiation effects