Comparison of dose distribution by means of bolus versus water bath phantom techniques in treatment of cutaneous sarcoma of an extremity.
Med Dosim
; 15(4): 221-6, 1990 Dec.
Article
en En
| MEDLINE
| ID: mdl-2127359
ABSTRACT
Cutaneous involvement by Kaposi's sarcoma (KS) is frequently diffuse, requiring large field irradiation. Selective tissue compensation techniques, accomplished with either a 1.5 cm bolus cast or water bath phantom, are compared. Dosimetric determinations were performed using 6 MVX with bone heterogeneity corrections. Application of 1.5 cm bolus effectively eliminated dose buildup and provided tissue compensation equivalent to water bath phantom technique. Treatment of other cutaneous malignancies, such as angiosarcoma, requiring higher total doses, should be accompanied by dosimetric evaluation, because cutaneous and midline dose inhomogeneity may result in a significant total dose differential over the target volume. Application of 1.5 cm bolus improved accuracy in treatment positioning, eliminated concerns regarding infection control in AIDS-related KS, and provided dose homogeneity comparable to the more standard water bath phantom technique.
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Banco de datos:
MEDLINE
Asunto principal:
Brazo
/
Dosificación Radioterapéutica
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Sarcoma de Kaposi
/
Neoplasias Cutáneas
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Síndrome de Inmunodeficiencia Adquirida
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Radioterapia de Alta Energía
Tipo de estudio:
Etiology_studies
Límite:
Humans
Idioma:
En
Año:
1990
Tipo del documento:
Article