Effect of postural changes on normal and stenosed common carotid artery using FSI.

abstract：:Radiation therapy of cancer is today going through a very dynamic development with the introduction of a large number of new treatment principles, new types of treatment units and new radiobiologically based optimization algorithms for treatment planning. All of these make use of the recent developments in three dimen...

journal_title：Australasian physical & engineering sciences in medicine

authors： Brahme A

更新日期：1996-06-01 00:00:00

abstract：:A variable magnetic deflector which attaches onto the treatment head of a linear accelerator has reduced skin dose by as much as 65% for 6MV x-rays. The magnetic deflector is constructed from Neodymium Iron Boron (NdFeB) rare earth magnets. It weighs approximately 15 kg and is designed to easily fit onto the accessory...

journal_title：Australasian physical & engineering sciences in medicine

authors： Butson MJ,Yu P,Kan M,Carolan M,Young E,Mathur JN,Metcalfe PE

更新日期：1997-06-01 00:00:00

abstract：:Radiochromic film is a self developing two-dimensional dosimeter system that is widely used in radiotherapy. Since its development some 40 years ago many improvements have been made; however the sensitivity can vary across the film and a non-linear dose response remains. The former can be addressed using a double expo...

journal_title：Australasian physical & engineering sciences in medicine

authors： Roozen K,Kron T,Haworth A,Franich R

更新日期：2011-06-01 00:00:00

abstract：:The accuracy of a computed tomography (CT)-relative electron density (RED) curve may have an indirect impact on the accuracy of dose calculation by a treatment planning system (TPS). This effect has not been previously quantified for input of different CT-RED curves from different CT-scan units in the Monaco TPS. This...

journal_title：Australasian physical & engineering sciences in medicine

authors： Hasani M,Farhood B,Ghorbani M,Naderi H,Saadatmand S,Karimkhani Zandi S,Knaup C

更新日期：2019-06-01 00:00:00

abstract：:Glaucoma is a chronic and irreversible neuro-degenerative disease in which the neuro-retinal nerve that connects the eye to the brain (optic nerve) is progressively damaged and patients suffer from vision loss and blindness. The timely detection and treatment of glaucoma is very crucial to save patient's vision. Compu...

journal_title：Australasian physical & engineering sciences in medicine

authors： Akram MU,Tariq A,Khalid S,Javed MY,Abbas S,Yasin UU

更新日期：2015-12-01 00:00:00

abstract：:In this study, we assessed the accuracy of surface doses determined by direct measurement and treatment planning system (TPS) calculations, relative to benchmark Monte Carlo (MC) doses calculated at 70 μm for a 6 MV, 10 × 10 cm clinical radiotherapy beam. In a homogeneous phantom with both open and fixed wedged fields...

journal_title：Australasian physical & engineering sciences in medicine

authors： Kim JH,Hill R,Kuncic Z

更新日期：2012-09-01 00:00:00

abstract：:Cricket bowling generates forces with torques on the upper limb muscles and makes the biceps brachii (BB) muscle vulnerable to overuse injury. The aim of this study was to investigate whether there are differences in the amplitude of the EMG signal of the BB muscle during fast and spin delivery, during the seven phase...

journal_title：Australasian physical & engineering sciences in medicine

authors： Ahamed NU,Sundaraj K,Ahmad B,Rahman M,Ali MA,Islam MA

更新日期：2014-03-01 00:00:00

abstract：:This paper proposes a novel approach to detect epilepsy seizures by using Electroencephalography (EEG), which is one of the most common methods for the diagnosis of epilepsy, based on 1-Dimension Local Binary Pattern (1D-LBP) and grey relational analysis (GRA) methods. The main aim of this paper is to evaluate and val...

journal_title：Australasian physical & engineering sciences in medicine

authors： Kaya Y

更新日期：2015-09-01 00:00:00

abstract：:Shear wave elasticity imaging (SWEI) has been used to measure the local tissue elasticity. The local tissue shear modulus can be reconstructed from the displacement field of shear waves using an algebraic Helmholtz inversion (AHI) equation or a time-of-flight (TOF)-based algorithm. The shear waves, which are generated...

journal_title：Australasian physical & engineering sciences in medicine

authors： Park DW,Cho HC

更新日期：2019-09-01 00:00:00

abstract：:The angular distribution for electron beams produced by the Siemens KD-2 linear accelerator has been found by simulating electron transport through the scattering foils and air using two methods: Fermi-Eyges multiple Coulomb scattering calculations, and EGS4 Monte Carlo simulations. Fermi-Eyges theory gives solutions ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Keall PJ,Hoban PW

更新日期：1994-09-01 00:00:00

abstract：:Cone-beam computed tomography (CBCT) has become the standard imaging technique for many sites treated with Radiotherapy. The Elekta X-ray Volumetric Imaging (XVI) system allows for the acquisition of CBCTs with three different diameters; small (27 cm), medium (41 cm) and large (50 cm) (Elekta in XVI Corrective Mainten...

journal_title：Australasian physical & engineering sciences in medicine

authors： Little DP

更新日期：2019-12-01 00:00:00

abstract：:A group of 113 children with poor vision who had been referred to the Electrodiagnostic Clinic over a five year period were investigated for disease of the retina and optic pathway by electroretinography (ERG), electro-oculography (EOG) and visual evoked response (VER). The electrodiagnostic measurements were made usi...

journal_title：Australasian physical & engineering sciences in medicine

authors： Hidajat RR,Goode DH

更新日期：2001-09-01 00:00:00

abstract：:Accelerator neutron sources for epithermal neutron capture therapy utilising the 7Li(p,n) nuclear reaction are proposed to operate in the range of 1.88 to 2.5 MeV proton energy. Operation with proton energies closer to the reaction threshold decreases neutron yield but allows for smaller reflector and moderator, with ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Zimin S,Allen BJ

更新日期：1998-12-01 00:00:00

abstract：:The purpose of this study was to measure skin dose using radiochromic film for two step-and-shoot IMRT fields and compare the results to the skin dose for a conventional open field. All exposures were made using a 6 MV photon beam produced by a Varian 21EX linear accelerator (Varian Medical Systems, CA, USA) equipped ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Price S,Williams M,Butson M,Metcalfe P

更新日期：2006-09-01 00:00:00

abstract：:This note investigates in-vivo dosimetry using a Metal Oxide Semiconductor Field Effect Transistor (MOSFET) for radiotherapy treatment at superficial and orthovoltage x-ray energies. This was performed within one fraction of the patients treatment. Standard measurements along with energy response of the detector are g...

journal_title：Australasian physical & engineering sciences in medicine

authors： Cheung T,Butson MJ,Yu PK

更新日期：2003-06-01 00:00:00

abstract：:Currently, a software-based second check dose calculation for helical tomotherapy (HT) is not available. The goal of this study is to evaluate the dose calculation accuracy of the in-house software using EGS4/MCSIM Monte Carlo environment against the treatment planning system calculations. In-house software was used t...

journal_title：Australasian physical & engineering sciences in medicine

authors： Dzintars E,Stathakis S,Mavroidis P,Sadeghi A,Papanikolaou N

更新日期：2012-12-01 00:00:00

abstract：:Wavelet theory is emerging as one of the prevalent tool in signal and image processing applications. However, the most suitable mother wavelet for these applications is still a relative question mark amongst researchers. Selection of best mother wavelet through parameterization leads to better findings for the analysi...

journal_title：Australasian physical & engineering sciences in medicine

authors： Saraswathy J,Hariharan M,Nadarajaw T,Khairunizam W,Yaacob S

更新日期：2014-06-01 00:00:00

abstract：:Rats are often used in the electromagnetic field (EMF) exposure experiments. In the study for the effect of 900 MHz EMF exposure on learning and memory in SD rats, the specific absorption rate (SAR) and the temperature rise in the rat head are numerically evaluated. The digital anatomical model of a SD rat is reconstr...

journal_title：Australasian physical & engineering sciences in medicine

authors： Yang L,Hao D,Wu S,Zhong R,Zeng Y

更新日期：2013-06-01 00:00:00

abstract：:The Australasian College of Physical Scientists and Engineers in Medicine (ACPSEM) Radiation Oncology Specialty Group (ROSG) formed a series of working groups in 2011 to develop position papers for guidance of radiation oncology medical physics practice within the Australasian setting. These position papers are intend...

journal_title：Australasian physical & engineering sciences in medicine

authors： Shakeshaft J,Perez M,Tremethick L,Ceylan A,Bailey M

更新日期：2014-03-01 00:00:00

abstract：:In recent years there has been a significant economic growth in South East Asia, along with it a concurrent development of medical physics. The status of four countries--Malaysia, Thailand, the Philippines and Indonesia are presented. Medical physicists in these countries have been experiencing the usual problems of l...

journal_title：Australasian physical & engineering sciences in medicine

authors： Ng K,Pirabul R,Peralta A,Soejoko D

更新日期：1997-03-01 00:00:00

abstract：:Given the difficulty and potential time- or financial-costs associated with accurate small field dosimetry, this study aimed to establish the clinical necessity of obtaining accurate small field output factor measurements and to evaluate the effects on planned doses that could arise if accurate measurements are not us...

journal_title：Australasian physical & engineering sciences in medicine

authors： Kairn T,Charles P,Crowe SB,Trapp JV

更新日期：2016-09-01 00:00:00

abstract：:Due to large inter- and intra-patient variabilities of arterial input functions (AIFs), accurately modeling and using patient-specific AIF are very important for quantitative analysis of dynamic contrast enhanced MRI. Computer simulations were performed to evaluate and compare nine population AIF models with the Parke...

journal_title：Australasian physical & engineering sciences in medicine

authors： He D,Xu L,Qian W,Clarke J,Fan X

更新日期：2018-06-01 00:00:00

abstract：:X-ray transmission tests were performed on a Green-Lite (Infab Corporation) apron/vest combination, and compared to a number of other apron/vest combinations routinely used at Christchurch Hospital as well as a sheet of 0.5 mm lead. The materials were X-rayed using the primary beam of a Philips Optimus 50 X-ray machin...

journal_title：Australasian physical & engineering sciences in medicine

authors： Muir S,McLeod R,Dove R

更新日期：2005-06-01 00:00:00

abstract：:The assignment of pathogenicity to variants suspected of causing an inherited retinal disease and the subsequent creation of molecular genetic reports sent to clinical geneticists and ophthalmologists has traditionally been time-consuming and subject to error and ambiguity. The purpose of this paper is to describe a c...

journal_title：Australasian physical & engineering sciences in medicine

authors： Huynh E,De Roach J,McLaren T,Thompson J,Montgomery H,Kap C,Hoffmann L,Lamey T

更新日期：2016-03-01 00:00:00

abstract：:Given that there is increasing recognition of the effect that sub-millimetre changes in collimator position can have on radiotherapy beam dosimetry, this study aimed to evaluate the potential variability in small field collimation that may exist between otherwise matched linacs. Field sizes and field output factors we...

journal_title：Australasian physical & engineering sciences in medicine

authors： Kairn T,Asena A,Charles PH,Hill B,Langton CM,Middlebrook ND,Moylan R,Trapp JV

更新日期：2015-06-01 00:00:00

abstract：:The use of Speiser needles for interstitial implants has resulted in malfunctioning of HDR afterloading equipment due to seepage of blood. We have successfully used rounded ended needles in the patient after removal of the trocar ended needles, preventing the seepage of blood. This technique also helps to prevent any ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Das KR,Duchesne G,Coles JR,Pinder P

更新日期：1999-12-01 00:00:00

abstract：:Non-linear loading of the utilities supply introduced significant electromagnetic field (EMF) interference severe enough to disrupt electrocardiograph (ECG) monitoring and recordings in the new Emergency Department (ED) at the Royal Melbourne Hospital (RMH). This interference was evident even though standard Mu-metal ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Davie WJ,Fowler MJ,Koumoundouros E

更新日期：2009-09-01 00:00:00

abstract：:A simple and rapid technique to measure the proton beam energy in the external beam line of a medical cyclotron has been examined. A stack of 0.1 mm thick high purity copper (Cu) foils was bombarded and the relative activity of 65Zn produced in each foil was compared to a computational model that predicted activity, b...

journal_title：Australasian physical & engineering sciences in medicine

authors： Burrage JW,Asad AH,Fox RA,Price RI,Campbell AM,Siddiqui S

更新日期：2009-06-01 00:00:00

abstract：:Memory plays an important role in human life. Memory can be divided into two categories, i.e., long term memory and short term memory (STM). STM or working memory (WM) stores information for a short span of time and it is used for information manipulations and fast response activities. WM is generally involved in the ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Ahmad RF,Malik AS,Kamel N,Reza F,Abdullah JM

更新日期：2016-06-01 00:00:00

abstract：:A continuous positive airway pressure (CPAP) device is considered one of the most effective treatments for obstructive sleep apnea (OSA). However, many patients receiving this treatment complain of mask discomfort and other issues. Therefore, this study aimed to develop a customized nasal mask cushion to reduce the di...

journal_title：Australasian physical & engineering sciences in medicine

authors： Hsu DY,Cheng YL,Bien MY,Lee HC

更新日期：2015-12-01 00:00:00