%0 Journal Article
%T Penumbral Dose Characteristics of Physical and Virtual Wedge Profiles
%A Salman Farrukh
%A Nasir Ilyas
%A Muhammad Naveed
%A Abdul Haseeb
%A Muhammad Bilal
%A Dr Najamuddin
%A Javed Iqbal
%J International Journal of Medical Physics,Clinical Engineering and Radiation Oncology
%P 216-224
%@ 2168-5444
%D 2017
%I Scientific Research Publishing
%R 10.4236/ijmpcero.2017.62020
%X <b><i><span style=\"font-family:Verdana;\">Purpose</span></i></b><b><span style=\"font-family:Verdana;\">:</span></b><span style=\"font-family:Verdana;\"> Both
physical and virtual wedges are used in radiotherapy to get uniform and desire</span><span style=\"font-family:Verdana;\">d</span><span style=\"font-family:Verdana;\"> dose distribution in clinical setting. All linear
accelerators of different venders have computer controlled dynamic wedges
called virtual wedge filters. Penumbra is one of the important photon beam characteristics
need</span><span style=\"font-family:Verdana;\">ed</span><span style=\"font-family:Verdana;\"> to </span><span style=\"font-family:Verdana;\">be </span><span style=\"font-family:Verdana;\">underst</span><span style=\"font-family:Verdana;\">ood</span><span style=\"font-family:Verdana;\"> in radiation therapy at the time of commissioning
of Treatment Planning system (TPS) as well as applying various treatment
planning algorithm</span><span style=\"font-family:Verdana;\">s</span><span style=\"font-family:Verdana;\"> in
clinical applications. In this study we measured the dose profiles of open
field, physical wedges (PW) and virtual wedges (VW) for energies (6</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">MV &amp; 15</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">MV),
various field sizes (10 </span><span style=\"font-family:Verdana;\">กม</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">10, 15 </span><span style=\"font-family:;\" \"=\"\"><span style=\"font-family:Verdana;\">กม</span><span style=\"font-family:Verdana;\"> 15 &amp; 20 </span><span style=\"font-family:Verdana;\">กม</span><span style=\"font-family:Verdana;\"> 20</span></span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:;\" \"=\"\"><span style=\"font-family:Verdana;\">cm</span><sup><span style=\"font-family:Verdana;\">2</span></sup><span style=\"font-family:Verdana;\">), depths (d</span></span><span style=\"font-family:Verdana;\"><sub></sub></span><sub><span style=\"font-family:Verdana;\">max</span></sub><sub><span style=\"font-family:Verdana;\"></span></sub><span style=\"font-family:Verdana;\">, 10</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">cm, 20</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">cm) and
wedge angles (15กใ, 30กใ, 45กใ and 60กใ). From beam
profile we calculated the penumbral width for open and wedged fields.</span><span
%K Physical Wedge
%K Virtual Wedge
%K Penumbra and Deviations
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=76542