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| Reference Reference information: Evaluating commercially available three-dimensional radiotherapy ... by WB Harms - 1997 - Cited by 3 - Related articles Such wedgesinclude standard physical wedges, the motor- ized wedge (single angle wedge, which is automati- cally inserted into the beamfor a .... Some hardware, beyond the basic system, may be required for patient image data acquisition. ... This test should be performed starting with aCT data set of at least forty ... linkinghub.elsevier.com/retrieve/pii/S1053429697800215 - Similar -------------------------------------------------- Note added at 1 hr (2010-05-26 21:55:58 GMT) -------------------------------------------------- It is also important to recognize that the IMRT factor will in many cases be smaller than the wedge factor that would be required if IMRT was not available. This is because physical wedges are designed to cover a range of field sizes, with the wedge factor being defined by the largest field size to be used. Production of a wedge profile by programmed collimation is equivalent to designing a wedge for each field and, as long as efficiency is one of the design criteria, the IMRT "wedge factor" will be less than the normal wedge factor required for comparable modulation. It is also worth noting that dynamically created wedges and compensators will produce less scattered X-rays and less electron contamination than physical wedges and physical compensators. This contamination radiation is likely to be as big a problem as leakage radiation. -------------------------------------------------- Note added at 1 hr (2010-05-26 21:56:30 GMT) -------------------------------------------------- from http://bjr.birjournals.org/cgi/content/full/74/877/98 -------------------------------------------------- Note added at 1 hr (2010-05-26 21:57:33 GMT) -------------------------------------------------- Analysis of x-ray computed tomography images using the noise power ... by K Faulkner - 1984 - Cited by 22 - Related articles These parameters have been expressed in terms of basic scanning factors such .... Thus if the beam flattening filters (or wedges) are correctly chosen, then the number ..... d'acquisition des donntes, pour en dtduire des expressions du spectre de ... Haque P and Stanley J H 1981 in Radiology of the Skull and Brain. ... iopscience.iop.org/0031-9155/29/11/003/pdf?ejredirect=migration -------------------------------------------------- Note added at 1 hr (2010-05-26 22:01:29 GMT) -------------------------------------------------- TERMIUM Plus® - WEDGE FILTER [1 fiche] - [ Translate this page ] Source, fiche 1, Observation 1 - wedge filter. OBS – [Le filtre en coin] est utilisé en radiothérapie pour compenser une obliquité de la surface d'entrée ou ... www.btb.termiumplus.gc.ca/.../alpha-fra.html?...WEDGE FILTE... |
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