Introduction: The head scatter factor (Sc) is one of the important parameters for monitor unit (MU) calculation. There are multiple factors that impact the Sc values, such as, head structures, back scattering in to dose monitoring chambers, wedges and so on. This study aimed to investigate the variations of SC with different build-up cap materials, wall thickness, Source to ...

We develop the theory of truncated wedge schemes, a higher dimensional analog of jet schemes. We prove some basic properties and give an irreducibility criterion for truncated wedge schemes of a locally complete intersection variety analogous to Mustaţǎ’s for jet schemes. We show that the reduced subscheme structure of a truncated wedge scheme of any monomial scheme is itself a monomial scheme ...

Background: In radiotherapy, wedge filters are used for optimizing the tumor dose distribution in patients. The attenuation in beam intensity due to the presence of wedge filter is compensated by means of a wedge factor measured at the central axis of the beam. The field size, depth and SSD dependence of wedge factor have been assessed for 9MV radiations of Neptun PC linear accelerator. Materia...

A new style of charge-separation position-sensitive detector has been tested which has similar cost benefits as other charge-separation devices but has an error-awareness capability to provide an increased collection rate. The wedge-on-wedge anode is similar to the wedge-and-strip anode except that the four electrodes possess both wedge and strip character. This provides additional charge infon...

[Purpose] The purpose of this study was to investigate interface pressure redistribution in healthy volunteers when applying different cushions and anterior wedge heights. [Subjects and Methods] This study included 36 healthy individuals in their 20s. The peak and mean pressures were measured by applying different cushions and anterior wedge heights. The results were analyzed by using a one-way...

conclusions the odscp has many advantages over the other type of plates. it can help the surgeon to operate with a relaxed mind and it is advisable for high tibial medial open wedge osteotomies. results the mean follow-up time was 9.33 ± 1.87 month. the average age was 45.13 ± 7.25 years. three patients were male and 13 patients were female. the lysholm score showed a significant difference bef...

BACKGROUND Varus deformity increases the risk of progression of medial compartment knee osteoarthritis. The aim of this study was to investigate the clinical and radiographic mid-term results of closing-wedge and opening-wedge high tibial osteotomy when used to treat this condition. METHODS From January 2001 to April 2004, ninety-two patients were randomized to receive either a closing-wedge ...

Complete solutions for the diaphanous wedge, by which is meant a wedge with identical wavenumbers inside and outside the wedge, are presented. The results are obtained from an integral equation for the fields on the wedge, which is solved by the Mellin and KantorovichLebedev transforms in the static and dynamic cases, respectively. Pertinent formulations of Gegenbauer’s addition theorems play a...