![]() However, the photon energy response of film is known to be a function of depth, field size, and photon beam energy, potentially reducing the accuracy of dose distribution measurements. High resolution, two-dimensional dose distributions can be measured using radiographic film. Good dosimetric results can be obtained if films from the same batch are irradiated with small to moderate field sizes (up to about 15 cm x 15 cm), at moderate depths (up to about 15 cm), using a single calibration curve, e.g., for a 10 cm x 10 cm field.įor intensity modulated radiation therapy (IMRT) dose distribution verification, multidimensional measurements are required to quantify the steep dose-gradient regions. For Co-60 and for the same dose, the Kodak and Agfa films gave at dose maximum an OD lower by 4% and 6%, respectively, for the parallel compared to the perpendicular geometry. The sensitometric curves of both types of film are almost independent of the film plane orientation, except for shallow depths. The slope of the sensitometric curve of the Agfa film is somewhat more dependent on photon beam energy, depth and field size. For the Kodak film the differences in OD with depth are less than 2%, except for the Co-60 beam, where the difference is about 4% at 10 cm depth for a 15 cm x 15 cm field. It was found that the sensitometric curves of the Kodak film derived at different depths are almost identical for the four x-ray beams. Films were positioned in a solid phantom, either perpendicular or (almost) parallel to the beam axis, and irradiated to different dose levels using various photon beams (Co-60, 6 MV, 15 MV, 18 MV, 45 MV). This variation, as well as the effect of beam energy and film plane orientation on OD, was therefore investigated for two types of film, Kodak X-Omat V and Agfa Structurix D2. In particular the variation of optical density, OD, with field size and depth in a phantom shows large differences in magnitude between various authors. Existing data concerning the influence of irradiation geometry on the sensitometric curve are conflicting. The shape of the sensitometric curve depends on the type of film as well as on the irradiation and processing conditions. WARRANTY INFORMATION.Film dosimetry is an important tool for the verification of irradiation techniques. 19 9.4.2 CLEANING THE TRANSPORT RACKS.20 9.4.3 CLEANING PRODUCTS.20 9.4.4 DRAINAGE OF CLEANING PRODUCTS.21 9.4.5 ALGAE PROTECTION.21 9.4.6 CLEANING THE FEED TABLE.21 9.5 USEFUL TIPS.22 9.6 APPLICATION REFERENCES.23 10ĪCCESSORIES, PERIPHERAL AND OPTIONAL KIT. MAINTENANCE.16 TIME PERIODS FOR CLEANING AND MAINTENANCE.17 MAINTENANCE CHECKLIST.18 CLEANING. 13 8.2 ERROR CODES.13 8.2.1 OVERVIEW OF THE POSSIBLE ERROR CODES.14 8.3 TROUBLESHOOTING LIST.15 9 12 7.2 MODIFICATION OF PROCESS PARAMETERS.12 7.3 SETTING RANGE OF PROCESS PARAMETERS.12 8 SETTING THE PROCESS PARAMETERS.12ħ.1 GENERAL. 9 6.2 FILMS THAT MAY BE PROCESSED.10 6.3 DISPLAY FUNCTIONS.11 7 ![]() 8 OPERATION.9Ħ.1 WARM-UP PHASE AND FILM INSERTION. 5īRINGING THE NOVA FILM PROCESSOR INTO SERVICE.6 SAFETY REGULATIONS.3Ģ.1 INTERNATIONAL STANDARDS AND CERTIFICATES. ![]() Provides 2 replenishment tanks of 30 liters, which can be positioned under o the table.ĬE DECLARATION OF CONFORMITY.2 This, by adding an adequate water o filter before the water inlet. Filter the incoming water into processor. This, o by adding a water saving solenoid valve and water circulation pump. circulation pumps are easy accessible and can be exchanged by yourself Racks are light, easy to remove and clean o o On-site or remote monitoring and diagnosis Upgrading with NOVA Comfort Kit The NOVA Comfort Kit is a package that Restrict the water consumption according to the film surface scanned. Įase of use External chemistry and water connections o Automatic chemical replenishment according to film surface scanning o o Control display allows visual reference and easy setting of all process parameter ´OK´ light indicates when the next film can be inserted o Ease to service o Easy access to all parts for possible exchange are conveniently positioned at sides e.g.In addition to the convenient compact size and lightweight construction, the NOVA film processor offers you – as operator – the following advantages: Thus, offering NOVA film processor the quality and features for which this processor range is renown. It combines the latest electronics with proven rack design and transport system. The Nova film processor is especially designed and built for the industrial NDT testing environment. GE Inspection Technologies GmbH Postfach 1363 50330 Hürth Congratulations! You have made an excellent choice acquiring the new NOVA film processor, part of the proven GE Inspection Technologies industrial X-ray film processor range.
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