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Portal localization radiographs have traditionally been low in contrast. However, on the Kodak EC-L Film/Cassette System they are approximately 3 times higher in contrast, allowing bony structures to be more easily differentiated, improves treatment field verification and has more confident beam positioning.
The Kodak EC-L Oncology Cassette with Kodak
EC-L Film can be used for all portal localization imaging on linear accelerators. This cassette has a 1.0 mm copper front screen and 2 phosphor intensifying screens. This exposes the double emulsion film with light - not electrons.
The Kodak EC-L Fast Cassette with Kodak EC-L Film allows for reduction of 20 to 30% in exposure techniques which may be appropriate for portal localization imaging of wide anatomical fields, such as lateral pelvis.
A technique chart for portal localization images taken using 4 to 18 MV energies is available. Initial images may be taken using the same techniques currently employed, making adjustments as needed. It is critical that consistent source-to-film distances be used.
05-113-232 Kodak EC-L Oncology Cassette,
14" x 17" $804.00
05-113-233 Kodak EC-L Fast Cassette, 14" x 17" $804.00
05-113-234 Kodak EC Films, 100 sheets/box $669.00
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