Patent ID: 8480407
Filing Date: 2013-07-09
Classification: B33Y,G09B

Abstract:
1. A phantom for prostate cancer brachytherapy comprising: (a) a prostate tissue phantom having a shape of a real prostate gland, the prostate tissue phantom comprising a polyvinyl alcohol cryogel having undergone 3-5 freeze-thaw cycles and having 10-20% w/w polyvinyl alcohol in a solvent, 4-8% w/w oil and an amount of acoustic scattering particles to ultrasonically distinguish the prostate tissue phantom from its surroundings; (b) a perineal tissue phantom surrounding the prostate tissue phantom, the perineal tissue phantom comprising a polyvinyl alcohol cryogel having undergone 1-2 freeze-thaw cycles and having 10-20% w/w polyvinyl alcohol in a solvent, 4-8% w/w oil and an amount of acoustic scattering particles to ultrasonically distinguish the perineal tissue phantom from its surroundings; (c) a skin tissue phantom separating all or part of the perineal tissue phantom from an outside environment, the skin tissue phantom comprising a polyvinyl alcohol cryogel having undergone at least 6 freeze-thaw cycles and having 15-25% w/w polyvinyl alcohol in a solvent; and, (d) an enclosure for containing the prostate tissue phantom, the perineal tissue phantom and the skin tissue phantom.