Quality assurance (QA) procedures for software: evaluation of an ADC quality system.

Abstract:

:Image viewing and processing software in computed radiography manipulates image contrast in such a way that all relevant image features are rendered to an appropriate degree of visibility, and improves image quality using enhancement algorithms. The purpose of this study was to investigate procedures for the quality assessment of image processing software for computed radiography with the use of existing test objects and to assess the influence that processing introduces on physical image quality characteristics. Measurements of high-contrast resolution, low-contrast resolution, spatial resolution, greyscale (characteristic curve) and geometric distortion were performed 'subjectively' by three independent observers and 'objectively' by the use of criteria based on pixel intensity values. Results show quality assessment is possible without the need for human evaluators, using digital images. It was discovered that the processing software evaluated in this study was able to improve some aspects of image quality, without introducing geometric distortion.

journal_name

Radiat Prot Dosimetry

authors

Efstathopoulos EP,Benekos O,Molfetas M,Charou E,Kottou S,Argentos S,Kelekis NL

doi

10.1093/rpd/nci742

keywords:

subject

Has Abstract

pub_date

2005-01-01 00:00:00

pages

291-7

issue

1-3

eissn

0144-8420

issn

1742-3406

pii

nci742

journal_volume

117

pub_type

杂志文章
  • Assessment of radiation doses to Australian participants in British nuclear tests.

    abstract::Between 1952 and 1957, the UK exploded a total of 12 nuclear devices in Australia, and also conducted about 600 'minor trials' that did not involve a nuclear explosion. Over 16 000 Australian servicemen and civilians were involved in the UK tests in Australia. This paper reports the estimation of doses that the Austra...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncp164

    authors: Crouch P,Robotham FR,Williams G,Wise K

    更新日期:2009-09-01 00:00:00

  • Time-integrated monitoring of thoron progeny concentration around closed uranium mine sites in Japan.

    abstract::Thoron progeny concentrations were determined using the time-integrated method around closed uranium mine sites in Japan. Because the time-integrated radon progeny monitor developed by the authors has the function to detect (212)Po, time-integrated monitoring of thoron progeny concentration is also available with the ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncq242

    authors: Ishimori Y

    更新日期:2010-10-01 00:00:00

  • The Mayak Worker Dosimetry System (MWDS-2013): Estimate of Pu Content in Lungs and Thoracic Lymph Nodes From a Limited Set of Organ Autopsy Samples.

    abstract::A method to estimate plutonium content from a limited number of samples of lungs and pulmonary lymph nodes obtained at autopsies of former Mayak Production Association (MPA) workers is described. Historically from one to five samples of lung lobes and one to three respiratory lymph nodes (bronchopulmonary, tracheobron...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncw218

    authors: Sokolova AB,Suslova KG,Miller SC

    更新日期:2017-11-01 00:00:00

  • Radiation Protection Studies for Medical Particle Accelerators using Fluka Monte Carlo Code.

    abstract::Radiation protection (RP) in the use of medical cyclotrons involves many aspects both in the routine use and for the decommissioning of a site. Guidelines for site planning and installation, as well as for RP assessment, are given in international documents; however, the latter typically offer analytic methods of calc...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncw302

    authors: Infantino A,Cicoria G,Lucconi G,Pancaldi D,Vichi S,Zagni F,Mostacci D,Marengo M

    更新日期:2017-04-01 00:00:00

  • A THIN-LAYER LIF THERMOLUMINESCENCE DOSEMETER SYSTEM WITH FAST READOUT FOR THE USE IN PERSONAL DOSIMETRY SERVICES.

    abstract::A newly developed thermoluminescence dosemeter system is presented that is suitable for application in fields where personal monitoring of a large number of users is required. The system presented here is intended to be used as the upcoming main dosemeter for whole body dosimetry at the dosimetry service of the MPA NR...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncv478

    authors: Walbersloh J,Busch F

    更新日期:2016-09-01 00:00:00

  • Natural Radioactivity of the Crystalline Basement Rocks of the Peloritani Mountains (North-Eastern Sicily, Italy): Measurements and Radiological Hazard.

    abstract::Crystalline rocks can produce dangerous radiation levels on the basis of their content in radioisotopes. Here, we report radiological data from 10 metamorphic and igneous rock samples collected from the crystalline basement of the Peloritani Mountains (southern Italy). In order to evaluate the radiological properties ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncaa178

    authors: Romano D,Caridi F,Di Bella M,Italiano F,Magazù S,Caccamo MT,Tripodo A,Faggio G,Grillo R,Triolo C,Messina G,Gattuso A,Sabatino G

    更新日期:2020-11-18 00:00:00

  • EFFECT OF PATIENT SIZE, ANATOMICAL LOCATION AND MODULATION STRENGTH ON DOSE DELIVERED AND IMAGE-QUALITY ON CT EXAMINATION.

    abstract::To study the effect of patient size, anatomical location and modulation strength (MS) on image-quality and delivered dose of CT scans acquired with automatic-exposure-control system (AEC). Four anthropomorphic phantoms (three paediatric and one thin adult) were studied, and normal and obese adults were simulated by pl...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncx055

    authors: Greffier J,Larbi A,Macri F,Beregi JP,Pereira F

    更新日期:2017-12-01 00:00:00

  • Occupational radiation exposure to norms in a gold mine.

    abstract::Preliminary studies have been conducted into the occupational radiation exposure to NORMS from surface and underground mining operations in a gold mine in the Ashanti Region of Ghana. A brief description of the methods and instrumentation is presented. The annual effective dose has been estimated to be 0.26 +/- 0.11 m...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/nci300

    authors: Darko EO,Tetteh GK,Akaho EH

    更新日期:2005-01-01 00:00:00

  • COMPARISON STUDY OF VARIOUS PLASTICS AS THE WALL MATERIAL OF THGEM-BASED MICRODOSEMETERS FOR FAST NEUTRON MEASUREMENTS.

    abstract::To find appropriate substitutions for the expensive plastics of A-150 and rexolite used in the construction of thick gas electron multiplier (THGEM)-based tissue-equivalent proportional counters, in the present work, the responses of a THGEM-based microdosimetric detector made of A-150 and rexolite and three others co...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncw008

    authors: Moslehi A,Raisali G,Lamehi M

    更新日期:2017-04-15 00:00:00

  • Occurrence and Dose From Intake of Radon In Drinking Groundwater In Ogun State, Nigeria.

    abstract::Radon-222 concentrations in groundwater from 10 local government areas (LGAs) of Ogun State were measured using AlphaGUARD radon detector and AquaKIT. The mean activity concentration of radon ranged from 1.23 ± 0.21 to 12.68 ± 18.11 Bq.l-1 corresponding to geometric means (GMs) of 1.22- 6.39 Bq.l-1. The radon concentr...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncaa221

    authors: Fatoki OO,Ademola JA

    更新日期:2021-02-03 00:00:00

  • Effect of heating rate on the responses of CaF2:Cu, CaF2:Tm, CaF2:Dy and CaF2:Mn.

    abstract::Recent development of CaF2:Cu (the most sensitive material for radiation dosimetry) exhibiting a TL glow peak around 270 degrees C similar to that of CaF2:Mn has made it attractive to study the influence of heating rate on the response of CaF2 based TLDs. Influence of heating rate on CaF2:Mn (known to reduce the respo...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/oxfordjournals.rpd.a005870

    authors: Pradhan AS

    更新日期:2002-01-01 00:00:00

  • Personal dose equivalent conversion coefficients for electrons to 1 Ge V.

    abstract::In a previous paper, conversion coefficients for the personal dose equivalent, H(p)(d), for photons were reported. This note reports values for electrons calculated using similar techniques. The personal dose equivalent is the quantity used to approximate the protection quantity effective dose when performing personal...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncr252

    authors: Veinot KG,Hertel NE

    更新日期:2012-04-01 00:00:00

  • Reconstruction of cluster distributions at 100% detection efficiency for a track-nanodosimetric counter through a Bayesian analysis.

    abstract::A Bayesian unfolding has been applied to ionisation distributions due to 5.4 MeV alpha particles in a 20-nm site obtained using Monte Carlo simulations, taking into account different detection efficiency conditions. The ideal case of a target volume with uniform efficiency has been investigated to study the dependence...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/nch143

    authors: De Nardo L,Lesimple M,Canella S,Grosswendt B

    更新日期:2004-01-01 00:00:00

  • Feminist theoretical perspectives on ethics in radiology.

    abstract::The substantive safety of radiological and other medical procedures can be radically reduced by unconscious factors governing scientific thought. In addition, the historical exclusion of women from these disciplines has possibly skewed their development in directions that now need to be addressed. This paper focuses o...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncp055

    authors: Condren M

    更新日期:2009-07-01 00:00:00

  • DETERMINATION OF THE TOTAL EFFECTIVE DOSE OF EXTERNAL AND INTERNAL EXPOSURE BY DIFFERENT IONIZING RADIATION SOURCES.

    abstract::The purpose of the research is to develop an integrated technique for determining the effective dose (E) of external and internal exposure by different sources of ionizing radiation. The proposing technique for determining the total effective dose is based on three methods of calculation. The first one is multiplying ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncz170

    authors: Kudryashev VA,Kim DS

    更新日期:2019-12-31 00:00:00

  • Radioactive waste management and decommissioning of accelerator facilities.

    abstract::During the operation of high-energy accelerators, the interaction of radiation with matter can lead to the activation of the machine components and of the surrounding infrastructures. As a result of maintenance operation and during decommissioning of the installation, considerable amounts of radioactive waste are evac...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncp196

    authors: Ulrici L,Magistris M

    更新日期:2009-11-01 00:00:00

  • Cytogenetic studies for a group of people living in Japan 1 year after the Fukushima nuclear accident.

    abstract::In order to understand the potential health effect of radiation from Fukushima nuclear disaster, a group of people living in Japan during and after the accident were investigated 1 y after the accident. The venous blood samples were extracted in tune from 156 tested persons living in Tokyo and Niigata with average age...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncu180

    authors: Chen Y,Zhou PK,Zhang XQ,Wang ZD,Wang Y,Darroudi F

    更新日期:2014-06-01 00:00:00

  • Analysis of the reliability of the local effect model for the use in carbon ion treatment planning systems.

    abstract::In radiotherapy with carbon ions, biological effects of treatments have to be predicted. For this purpose, one of the most used models is the local effect model (LEM) developed at the Gesellschaft für Schwerionenforschung (GSI), Germany. At the Istituto Nazionale di Fisica Nucleare, Italy, the reliability of the last ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncq407

    authors: Russo G,Attili A,Bourhaleb F,Marchetto F,Peroni C,Schmitt E,Bertrand D

    更新日期:2011-02-01 00:00:00

  • Investigation of combined unfolding of neutron spectra using the UMG unfolding codes.

    abstract::An investigation of the simultaneous unfolding of data from neutron spectrometers using the UMG codes MAXED and GRAVEL has been performed. This approach involves combining the data from the spectrometers before unfolding, thereby performing a single combined unfolding of all the data to yield a final combined spectrum...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncm082

    authors: Roberts NJ

    更新日期:2007-01-01 00:00:00

  • EVALUATION OF SECONDARY DOSE AND CANCER RISK FOR OUT-OF-FIELD ORGAN IN ESOPHAGEAL CANCER IMRT IN A CHINESE HOSPITAL USING ATOM PHANTOM MEASUREMENTS.

    abstract::There have been few studies on the secondary cancer after radiation treatment in Chinese hospitals. This study has measured out-of-field absorbed organ doses from intensity-modulated radiation therapy (IMRT) radiotherapy for esophageal cancer in a Chinese hospital and evaluated the risks of secondary cancer. The dose ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncx057

    authors: Qi Y,He L,Wang Z,Liu Y,Liu H,Huo W,Xu XG,Chen Z

    更新日期:2017-12-01 00:00:00

  • Absorbed dose rate estimation for protons, leptons and helium observed with AMS01 experiment in low earth orbit during STS-91 mission.

    abstract::The Alpha Magnetic Spectrometer (AMS01), a high-sensitivity particle spectrometer, was successfully flown for 10 d in June 1998 (STS91) in the orbit of the International Space Station (51.7 degrees, -380 km). A high-statistics dataset of galactic cosmic rays were measured as a function of geomagnetic latitude, includi...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/nci071

    authors: Ionica M,Alpat B,Ambrosi G,Battiston R,Bertucci B,Burger WJ,Caraffini D,Cecchi C,Dinu N,Esposito G,Fiandrini E,Ionica R,Menichelli M,Pauluzzi M,Zuccon P

    更新日期:2005-01-01 00:00:00

  • Improved chelation therapy of intramuscularly deposited thorium by CaDTPA in the rat.

    abstract::Comparative studies on the translocation and retention of intramuscularly (i.m.) injected thorium nitrate (234Th 46 ng + 232Th 5 microg per rat) in solutions of citrate, CaDTPA or citrate + CaDTPA in rats have been conducted. Results showed that only thorium in mixed-ligand solution was entirely translocated from the ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/oxfordjournals.rpd.a006294

    authors: Rencová J,Vlková A,Veselá G

    更新日期:2003-01-01 00:00:00

  • Extremity and eye lens doses in interventional radiology and cardiology procedures: first results of the ORAMED project.

    abstract::The main objective of WP1 of the ORAMED (Optimization of RAdiation protection for MEDical staff) project is to obtain a set of standardised data on extremity and eye lens doses for staff in interventional radiology (IR) and cardiology (IC) and to optimise staff protection. A coordinated measurement program in differen...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncq508

    authors: Domienik J,Brodecki M,Carinou E,Donadille L,Jankowski J,Koukorava C,Krim S,Nikodemova D,Ruiz-Lopez N,Sans-Mercé M,Struelens L,Vanhavere F

    更新日期:2011-03-01 00:00:00

  • The in vivo assessment of thorium body burden by gamma ray sepctrometry.

    abstract::Thorium is used in many different industrial technologies and is widely found in nature. Internal contamination with thorium is considered as highly hazardous because of its radiological and chemical toxicities, which depend on the chemical form in which thorium appears. The assessment of the thorium body burden is th...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/oxfordjournals.rpd.a006656

    authors: Genicot JL,Bruggeman M

    更新日期:2001-01-01 00:00:00

  • Field tests using radioactive matter 2.

    abstract::Results of field tests with explosive dispersal of a radioactive substance (RaS) are presented. The paper deals with tests exploiting artificial obstacles as a continuation and expansion of the tests used in this study performed in free area described previously. The essential goal of the tests was to estimate the dis...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncs209

    authors: Rulik P,Prouza Z,Hovorka J,Beckova V,Cespirova I,Fronka A,Helebrant J,Hulka J,Kuca P,Skrkal J

    更新日期:2013-04-01 00:00:00

  • Neutron measurements in a Varian 2,100C LINAC facility using a Bonner sphere system based on passive gold activation detectors.

    abstract::The use of high-energy linear electron accelerators (LINACs) for medical cancer treatments is widespread on an international scale. The associated bremsstrahlung X rays may produce neutrons as a result of subsequent photonuclear reactions with the different materials constituting the accelerator head. The generated ne...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncm075

    authors: Fernández F,Domingo C,Amgarou K,Castelo J,Bouassoule T,Garcia MJ,Luguera E

    更新日期:2007-01-01 00:00:00

  • SCOPING ANALYSIS OF MATERIAL ACTIVATION AT A BORON NEUTRON CAPTURE THERAPY FACILITY BASED ON THE Be(p,xn) REACTION WITH 30 MeV PROTONS.

    abstract::Material activation assessment of a proposed accelerator-based boron neutron capture therapy facility was performed using the FLUKA Monte Carlo code to quantify the magnitude of the problem in terms of the isotope inventories, induced activities, and residual dose rates. Two simplified operation scenarios were conside...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncx289

    authors: Lai BL,Sheu RJ

    更新日期:2018-08-01 00:00:00

  • Microdosimetric evaluation of the neutron field for BNCT at Kyoto University reactor by using the PHITS code.

    abstract::In this study, microdosimetric energy distributions of secondary charged particles from the (10)B(n,α)(7)Li reaction in boron-neutron capture therapy (BNCT) field were calculated using the Particle and Heavy Ion Transport code System (PHITS). The PHITS simulation was performed to reproduce the geometrical set-up of an...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncq511

    authors: Baba H,Onizuka Y,Nakao M,Fukahori M,Sato T,Sakurai Y,Tanaka H,Endo S

    更新日期:2011-02-01 00:00:00

  • Entrance surface, organ and effective doses for some of the patients undergoing different types of X ray procedures in Bangladesh.

    abstract::Entrance surface doses (ESDs) were measured for the most common types of X ray procedures, such as chest PA, lumber spine AP, lumber spine lateral, skull AP, skull lateral and pelvis AP in four major hospitals of Dhaka, the capital city of Bangladesh. Organ/tissue doses for 29 organs/tissues and effective doses for th...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/oxfordjournals.rpd.a006549

    authors: Begum Z

    更新日期:2001-01-01 00:00:00

  • Organ dose conversions from ESR measurements using tooth enamel of atomic bomb survivors.

    abstract::Dose conversions were studied for dosimetry of atomic bomb survivors based upon electron spin resonance (ESR) measurements of tooth enamel. Previously analysed data had clarified that the tooth enamel dose could be much larger than other organ doses from a low-energy photon exposure. The radiation doses to other organ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncr408

    authors: Takahashi F,Sato K

    更新日期:2012-03-01 00:00:00