TY - JOUR
T1 - Light scattering artefacts in a funnel phantom using optical CT
AU - Bosi, Stephen G.
AU - Brown, Saxby
AU - Sarabipour, Sarvenaz
AU - De Deene, Yves
AU - Baldock, Clive
PY - 2009
Y1 - 2009
N2 - A gelatin phantom containing a funnel-shaped region of high opacity (or optical density OD) was used to examine light-scattering induced artefacts in a cone-beam optical CT scanner used for gel dosimetry. To correctly simulate polymer gel dosimeters, the opacity was introduced by adding a colloidal scatterer to the gelatin. In line profiles of OD taken from 3-D reconstructions of the funnel, those profiles with a long pathlength through high OD regions exhibited a "dishing" artefact, while those of short pathlength exhibited the opposite effect - "doming". These phenomena are accounted for by a model that includes the effect of stray, scattered light.
AB - A gelatin phantom containing a funnel-shaped region of high opacity (or optical density OD) was used to examine light-scattering induced artefacts in a cone-beam optical CT scanner used for gel dosimetry. To correctly simulate polymer gel dosimeters, the opacity was introduced by adding a colloidal scatterer to the gelatin. In line profiles of OD taken from 3-D reconstructions of the funnel, those profiles with a long pathlength through high OD regions exhibited a "dishing" artefact, while those of short pathlength exhibited the opposite effect - "doming". These phenomena are accounted for by a model that includes the effect of stray, scattered light.
UR - http://www.scopus.com/inward/record.url?scp=67650693059&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/164/1/012021
DO - 10.1088/1742-6596/164/1/012021
M3 - Article
AN - SCOPUS:67650693059
SN - 1742-6588
VL - 164
SP - 1
EP - 5
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
M1 - 012021
ER -