Ozone, cloud, solar and UV-B levels at a low pollution, Southern Hemisphere, sub-tropical site for winter/spring 1995.

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：: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：: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 effect of radiation in regard to breast carcinogenesis is well studied and analysed from data from atomic bomb survivors, patients treated for acute mastitis and tuberculosis patients monitored by fluoroscopy. Therefore the radiation received by the untreated breast during breast irradiation of the other breast, i...

journal_title：Australasian physical & engineering sciences in medicine

authors： Jamal N,Das KR

更新日期：2001-06-01 00:00:00

abstract：:Compression techniques are vital for efficient storage and fast transfer of medical image data. The existing compression techniques take significant amount of time for performing encoding and decoding and hence the purpose of compression is not fully satisfied. In this paper a rapid 4-D lossy compression method constr...

journal_title：Australasian physical & engineering sciences in medicine

authors： Uma Vetri Selvi G,Nadarajan R

更新日期：2015-12-01 00:00:00

abstract：:In this paper, the peristaltic flow of rheologically complex physiological fluids when modelled by a non-Newtonian Casson fluid in a two-dimensional channel is considered. Of interest is the difference between peristaltic transport of Newtonian and non-Newtonian fluids. A perturbation series method of solution of the ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Mernone AV,Mazumdar JN

更新日期：2000-09-01 00:00:00

abstract：:In recent years, the use of gold nanoparticles in radiation therapy has been introduced as a new approach in radiotherapy. The aim of this study is to investigate the effect of gold nanoparticles (GNPs) in plaque brachytherapy for choroidal melanoma using Monte Carlo (MC) simulation. MCNPX code was used for simulation...

journal_title：Australasian physical & engineering sciences in medicine

authors： Rezaei H,Zabihzadeh M,Ghorbani M,Goli Ahmadabad F,Mostaghimi H

更新日期：2017-09-01 00:00:00

abstract：:The knowledge of radiation dose at all points of interest within a patient's body is essential for the evaluation of treatment plans and for the judicious selection of the best one from among a set of competing plans. This paper discusses the physical and geometric aspects of radiation dose distribution calculations n...

journal_title：Australasian physical & engineering sciences in medicine

authors： Mohan R

更新日期：1989-12-01 00:00:00

abstract：:Gating is a relatively new and potentially useful therapeutic addition to external beam radiotherapy applied to regions affected by intra-fraction motion. The impact was of gating on treatment margins, image artifacts, and volume and positional accuracy was investigated by CT imaging of sinusoidally moving spheres. Th...

journal_title：Australasian physical & engineering sciences in medicine

authors： Keall PJ,Kini VR,Vedam SS,Mohan R

更新日期：2002-03-01 00:00:00

abstract：:Orthovoltage x-ray beams exhibit the characteristic of depth dose buildup which is not well described in the literature. The principal reason for this phenomenon is the increase in dose deposited due to electrons set in motion by secondary (Compton) scattered photons within the phantom, as depth is increased until lon...

journal_title：Australasian physical & engineering sciences in medicine

authors： Hill RF,Keall PJ,Beckham WA,Perez MD

更新日期：1998-06-01 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 Resonant Recognition Model (rrm) uses digital signal processing methods to investigate protein structure-function; and links the biological function of protein families to unique characteristic frequencies. The rrm originally used a single set of variables: the electron ion interaction potential (EIIP). Here the r...

journal_title：Australasian physical & engineering sciences in medicine

authors： Birch S,West R,Cosic I

更新日期：1995-12-01 00:00:00

abstract：:Gravity associated with postural changes has a strong bearing on haemodynamics of blood flow in arteries. Its effect on stenosed cases has not been widely investigated. In the present study, variation observed in blood flow during postural changes is investigated for different conditions like standing, sleeping and he...

journal_title：Australasian physical & engineering sciences in medicine

authors： Raghuvir Pai B,Ayachit A,Abdul Khader SM,Ahmed KA,Rao VR,Kamath SG,Gupta PD

更新日期：2014-03-01 00:00:00

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 study was made of calibrating the NACP plane parallel chamber in electron beams from linear accelerators of a different manufacture with energies, Ep,o' from 4.4 to 19.1 MeV, and also in 4 and 6 MV photon beams as well as a cobalt60 beam. The photon beam measurements were both IN-AIR and IN-PHANTOM. With the excepti...

journal_title：Australasian physical & engineering sciences in medicine

authors： Cross P,Freeman N

更新日期：1996-09-01 00:00:00

abstract：:The quality of phantom materials is crucial for accurate dosimetry in radiotherapy. A wide range of factors such as density, electron density and elemental composition can influence the radiation properties, and hence the absorbed dose, of materials. New materials can be tested by direct measurements which requires co...

journal_title：Australasian physical & engineering sciences in medicine

authors： Keall P,Kron T,Hoban P

更新日期：1993-09-01 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：: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：:TomoTherapy can provide highly accurate SABR deliveries, but currently it does not have any effective motion management techniques. Shallow breathing has been identified as one possible motion management solution on TomoTherapy, which has been made possible with the BreatheWell audiovisual biofeedback (AVB) device. Si...

journal_title：Australasian physical & engineering sciences in medicine

authors： Hu Y,Archibald-Heeren B,Byrne M,Cai E,Wang Y

更新日期：2019-03-01 00:00:00

abstract：:Coronary artery disease producing ischemic cardiomyopathy is the most frequent cause of left ventricular systolic dysfunction. Non-ischemic cardiomyopathies can also produce systolic dysfunction; they may be inherited as genetic disorders or occur sporadically. These coronary injuries have repercussions on the left ve...

journal_title：Australasian physical & engineering sciences in medicine

authors： Manivannan J,Reddy MR,Thanikachalam S,Kumar RA

更新日期：2005-03-01 00:00:00

abstract：:Bicoherence analysis is applied to electromyogram (EMG) data for the vastus lateralis quadriceps muscle of 18 adult male subjects for isometric knee extension exercise. Bicoherence spectra display ridge-like features that are indicative of deterministic chaotic behaviour and similar to those reported for normal electr...

journal_title：Australasian physical & engineering sciences in medicine

authors： Simeoni RJ,Mills PM

更新日期：2003-03-01 00:00:00

abstract：:The computed tomography (CT) imaging artefacts that metallic medical implants produce in surrounding tissues are usually contoured and over-ridden during radiotherapy treatment planning. In cases where radiotherapy treatment beams unavoidably pass though implants, it is especially important to understand the imaging a...

journal_title：Australasian physical & engineering sciences in medicine

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

更新日期：2013-06-01 00:00:00

abstract：:Electron beams can be used for the radiotherapy treatment of superficial cancers. In many cases of electron beam radiotherapy, tissue equivalent bolus material placed on the skin is to be used to enhance skin dose. An air gap might be present between the bolus and the skin due to variation in the patient contour. The ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Kong M,Holloway L

更新日期：2007-06-01 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：:Improved technology and higher fidelity are making medical simulations increasingly popular. A simulated peripheral nerve stimulator and thumb actuator has been developed for use with the SimMan Universal Patient Simulator. This device incorporates a handheld control box, a McKibben pneumatic muscle and articulated th...

journal_title：Australasian physical & engineering sciences in medicine

authors： Sprick C

更新日期：2006-03-01 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：:The alcoholism can be detected by analyzing electroencephalogram (EEG) signals. However, analyzing multi-channel EEG signals is a challenging task, which often requires complicated calculations and long execution time. This paper proposes three data selection methods to extract representative data from the EEG signals...

journal_title：Australasian physical & engineering sciences in medicine

authors： Wang S,Li Y,Wen P,Lai D

更新日期：2016-03-01 00:00:00

abstract：:This paper describes a software tool developed for research into the use of an electronic portal imaging device (EPID) to verify dose for intensity modulated radiation therapy (IMRT) beams. A portal dose image prediction (PDIP) model that predicts the EPID response to IMRT beams has been implemented into a commerciall...

journal_title：Australasian physical & engineering sciences in medicine

authors： Vial P,Hunt P,Greer PB,Oliver L,Baldock C

更新日期：2008-09-01 00:00:00

abstract：:The performance of an image registration (IR) software was evaluated for automatically detecting known errors simulated through the movement of ExactCouch using an onboard imager. Twenty-seven set-up errors (11 translations, 10 rotations, 6 translation and rotation) were simulated by introducing offset up to ± 15 mm i...

journal_title：Australasian physical & engineering sciences in medicine

authors： Sharma SD,Dongre P,Mhatre V,Heigrujam M

更新日期：2012-09-01 00:00:00

abstract：:Thermoluminescence dosimetry (TLD) is a versatile tool for the assessment of dose from ionising radiation. The wide variety of TLD materials and their different physical forms allow the determination of different radiation qualities at dose levels from microGy to kGy. Major advantages of TL dosimeters are their small ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Kron T

更新日期：1994-12-01 00:00:00