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Abstract [Objective]To explore the difference of dosiology of three-dimensional conformal(3DCRT)and static intensity-modulated radiology(sIMRT)in radiation therapy for liver cancer.[Methods]Totally 38 pa-tients with primary right lobe cancer of liver were chosen.All patients received 3DCRT and sIMRT.The dose was 50Gy for 25 fractions of radiation.The dosiology parameters of different radiotherapy target area and dan-gerous organ,accelerator hops(MU)and effective treatment time parameters were compared.[Results]The Dmax/Gy,Dmin/Gy and V95% target region dosiology in sIMRT were (52.9±0.3),(49.0±0.2)and (99.5±0.2)respectively which were lower than those in 3DCRT[(53.1±0.4),(46.2±0.6)and (97.4± 1.5),respectively],and there were significant differences(P<0.05).There was no significant difference in mean liver dose between sIMRT and sDCRT[(20.1± 4.3)Gy vs.(21.3±3.4)Gy](P>0.05).There was no significant difference in MU between 3DCRT and sIMRT[(403 ± 97)vs.(391±82)](P>0.05).The effective treatment time of 3DCRT was (2.0±0.1)min which was less than that in sIMRT[(4.9± 0.6)min] (P<0.05).[Conclusion]Both sIMRT and 3DCRT can markedly increase the curative effect and improve liv-er target dose coverage.Therefore,sIMRT technology is more effective means of treating liver cancer.
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2014, Vol. 31 
