Diagnostic x-ray spectra simulation, verification and application to the clinical environment.

abstract：:In 2001 the ACPSEM published a position paper on quality assurance in screen film mammography which was subsequently adopted as a basis for the quality assurance programs of both the Royal Australian and New Zealand College of Radiologists (RANZCR) and of BreastScreen Australia. Since then the clinical implementation ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Heggie JCP,Barnes P,Cartwright L,Diffey J,Tse J,Herley J,McLean ID,Thomson FJ,Grewal RK,Collins LT

更新日期：2017-09-01 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：: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 recommendations for guidance of radiation oncology medical physics practice within the Australasian setting. These recommendations are intend...

journal_title：Australasian physical & engineering sciences in medicine

authors： Nelligan R,Bailey M,Tran T,Baldwin Z,ACPSEM total body irradiation working group.

更新日期：2015-06-01 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：:Rotary blood pumps have the potential to become a viable long-term treatment option for the heart failure patients to bridge to transplantation or destination therapy. However, these devices operate at a constant speed which may lead to long term complications or they may operate in an undesired support mode such as e...

journal_title：Australasian physical & engineering sciences in medicine

authors： Bozkurt S

更新日期：2016-03-01 00:00:00

abstract：:Despite ongoing active research, the role of the radiation bystander effect in modifying local tissue response to an ionising radiation dose remains unclear. The present study aims to provide new insight by simulating the diffusion-mediated inter-cellular communication processes in 2D and 3D cell-like structures to ca...

journal_title：Australasian physical & engineering sciences in medicine

authors： Moulton CR,Fleming AJ,Ebert MA

更新日期：2011-04-01 00:00:00

abstract：:A set of four 4 MV photon beam compensators were produced, one for each field of a Hodgkins Disease treatment plan. The resultant dose profiles at various depths were measured by an ion chamber in water and by Kodak X-Omat V film in a Solid Water phantom, and compared to the doses calculated by a GE RT/Plan treatment ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Ralston AC,Francis JW

更新日期：1992-03-01 00:00:00

abstract：:Bipolar disorder (BD) is a severe psychiatric disorder and has two common types: type I and type II. Early diagnosis of the subtypes is very challenging particularly in adolescence. In this study, 38 adolescents are participated including 18 patients with BD I and 20 patients with BD II. The electroencephalogram signa...

journal_title：Australasian physical & engineering sciences in medicine

authors： Khaleghi A,Sheikhani A,Mohammadi MR,Nasrabadi AM,Vand SR,Zarafshan H,Moeini M

更新日期：2015-12-01 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：: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

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：:An automated computer-aided diagnosis system is developed to classify benign and malignant thyroid nodules using multi-stained fine needle aspiration biopsy (FNAB) cytological images. In the first phase, the image segmentation is performed to remove the background staining information and retain the appropriate foregr...

journal_title：Australasian physical & engineering sciences in medicine

authors： Gopinath B,Shanthi N

更新日期：2013-06-01 00:00:00

abstract：:A 69 year old male was treated with an ablative dose of 3.7 GBq (100 mCi) of I131 for carcinoma of the thyroid and died 10 days after administration. The requirement for an autopsy and the level of radiation still present in the body necessitated the intervention of Radiation Safety Personnel to minimise support staff...

journal_title：Australasian physical & engineering sciences in medicine

authors： Wallace AB,Bush V

更新日期：1991-06-01 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：:AFOMP recognizes that clinical medical physicists should demonstrate that they are competent to practice their profession by obtaining appropriate education, training and supervised experience in the specialties of medical physics in which they practice, as well as having a basic knowledge of other specialties. To hel...

journal_title：Australasian physical & engineering sciences in medicine

authors： Round WH,Ng KH,Healy B,Rodriguez L,Thayalan K,Tang F,Fukuda S,Srivastava R,Krisanachinda A,Shiau AC,Deng X,Han Y

更新日期：2011-09-01 00:00:00

abstract：:Numerical simulation is performed to demonstrate that hemodynamic factors are significant determinants for the development of a vascular pathology. Experimental measurements by particle image velocimetry are carried out to validate the credibility of the computational approach. We present a study for determining compl...

journal_title：Australasian physical & engineering sciences in medicine

authors： Cheung SC,Wong KK,Yeoh GH,Yang W,Tu J,Beare R,Phan T

更新日期：2010-12-01 00:00:00

abstract：:Segmentation of different tissues is one of the initial and most critical tasks in different aspects of medical image processing. Manual segmentation of brain images resulted from magnetic resonance imaging is time consuming, so automatic image segmentation is widely used in this area. Ensemble based algorithms are ve...

journal_title：Australasian physical & engineering sciences in medicine

authors： Ahmadvand A,Sharififar M,Daliri MR

更新日期：2015-06-01 00:00:00

abstract：:Post installation acceptance testing is vital to demonstrate that the equipment meets the vendor's specification and is suitable for clinical studies. The test procedures described in the NEMA NU 2-2001 document form the basis of vendor performance specifications of PET scanners and hence are also appropriate for acce...

journal_title：Australasian physical & engineering sciences in medicine

authors： Sathiakumar C,Som S,Eberl S,Lin P

更新日期：2010-06-01 00:00:00

abstract：:Interest in human emotion recognition, regarding physiological signals, has recently risen. In this study, an efficient emotion recognition system, based on geometrical analysis of autonomic nervous system signals, is presented. The electrocardiogram recordings of 47 college students were obtained during rest conditio...

journal_title：Australasian physical & engineering sciences in medicine

authors： Goshvarpour A,Abbasi A,Goshvarpour A

更新日期：2017-06-01 00:00:00

abstract：:Fibromyalgia syndrome (FMS) is a chronic muscle and skeletal system disease observed generally in women, manifesting itself with a widespread pain and impairing the individual's quality of life. FMS diagnosis is made based on the American College of Rheumatology (ACR) criteria. However, recently the employability and ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Arslan E,Yildiz S,Albayrak Y,Koklukaya E

更新日期：2016-06-01 00:00:00

abstract：:The effects of internal and external scatter on surface, build-up and depth dose characteristics simulated by Monte Carlo code EGSnrc for varying field size and SSD for a 10 MeV monoenergetic electron beam with and without an accelerator model are extensively studied in this paper. In particular, sub-millimetre surfac...

journal_title：Australasian physical & engineering sciences in medicine

authors： Lin H,Wu DS,Wu AD

更新日期：2005-09-01 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：:In general, a weighting factor of one is applied for low linear energy transfer radiations. However, several studies indicate that relative biological effectiveness (RBE) of low energy photons and electrons is greater than one. The aim of this current study was calculating the RBE of I-131 radiation relative to Co-60 ...

journal_title：Australasian physical & engineering sciences in medicine

authors： Ezzati AO,Mahmoud-Pashazadeh A,Studenski MT

更新日期：2017-06-01 00:00:00

abstract：:Magnetic resonance imaging has become a key modality within the modern radiology department. In addition to the conventional slice images, three dimensional angiographic images, and quantitative flow measurements can be obtained. More recently methods have been developed which enable one to visualize the motion of obj...

journal_title：Australasian physical & engineering sciences in medicine

authors： McKinnon GC,Fischer SE,Maier SE

更新日期：1991-12-01 00:00:00

abstract：:This paper presents a new method to apply timing characteristics of electroencephalograph (EEG) beta frequency bands to assess the depth of anaesthesia (DoA). Firstly, the measured EEG signals are denoised and decomposed into 20 different frequency bands. The Mobility (M), permutation entropy (PE) and Lempel-Ziv compl...

journal_title：Australasian physical & engineering sciences in medicine

authors： Li T,Wen P

更新日期：2016-09-01 00:00:00

abstract：:Over 90% of craniopharyngeal brain tumors are cystic, which enables the injection of beta emitters such as phosphorus-32 (32P) radio-colloid into cysts for their treatment. The aim of this study was to evaluate the clinical and theoretical modelling of Bremsstrahlung radiation dose resulting from stereotactic radio-co...

journal_title：Australasian physical & engineering sciences in medicine

authors： Babaei M,Ghahramani-Asl R,Sadoughi HR,Sardari D,Shahzadi S

更新日期：2018-09-01 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：:A new PTW advanced Markus ionization chamber has been implemented in IMRT fields, to measure surface dose at ICRU and ICRP reference depth of 0.07 mm [ICRU Report 39, Determination of dose equivalents resulting from external radiation sources, 1985; ICRP Publication 60, 1990 recommendations of the International Commis...

journal_title：Australasian physical & engineering sciences in medicine

authors： Chen FQ,Gupta R,Metcalfe P

更新日期：2010-03-01 00:00:00

abstract：:The measurement of absorbed dose to water in a solid-phantom may require a conversion factor because it may not be radiologically equivalent to water. One phantom developed for the use of dosimetry is a solid water, RW3 white-polystyrene material by IBA. This has a lower mass-energy absorption coefficient than water d...

journal_title：Australasian physical & engineering sciences in medicine

authors： Seet KY,Hanlon PM,Charles PH

更新日期：2011-12-01 00:00:00

abstract：:In-phantom figures of merit of the radiobiological dose distribution are the main criteria for evaluation of the boron neutron capture therapy (BNCT) plan and neutron beam evaluation. Since in BNCT there are several reactions, which contribute to the total dose of the tissue, the calculation of the dose distribution i...

journal_title：Australasian physical & engineering sciences in medicine

authors： Ahangari R,Afarideh H

更新日期：2011-12-01 00:00:00