A comparison of digital radiography systems in terms of effective detective quantum efficiency

Medical Physics
Marco BertoliniMauro Iori

Abstract

The purpose of this study is to compare digital radiography systems using the metric effective detective quantum efficiency (eDQE), which better reflects digital radiography imaging system performance under clinical operating conditions, in comparison with conventional metrics such as modulation transfer function (MTF), normalized noise power spectra (NNPS), and detective quantum efficiency (DQE). The eDQE was computed by the calculation of the MTF, the NNPS, the phantom attenuation and scatter, and estimation of x-ray flux. The physical characterization of the systems was obtained with the standard beam conditions RQA5 and RQA9, using the PA Chest phantom proposed by AAPM Report # 31 simulating the attenuation and scatter characteristics of the adult human thorax. The MTF (eMTF) was measured by using an edge test placed at the frontal surface of the phantom, the NNPS (eNNPS) was calculated from images of the phantom acquired at three different exposure levels covering the operating range of the system (E(0), which is the exposure at which a system is normally operated, 1/3 E(0), and 3 E0), and scatter measurements were assessed by using a beam-stop technique. The integral of DQE (IDQE) and eDQE (IeDQE) was calculated over the ...Continue Reading

References

Mar 13, 2001·Medical Physics·K A Fetterly, N J Hangiandreou
Jun 2, 2001·Science·UNKNOWN Governing Council of the Organization for Human Brain
Jul 24, 2003·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection
Aug 9, 2003·Medical Physics·Giovanni BorasiDavide Tassoni
Jul 29, 2006·Medical Physics·Giovanni BorasiDavide Tassoni
Apr 19, 2007·Medical Physics·P MonninF R Verdun
Jan 1, 2005·Proceedings - Society of Photo-Optical Instrumentation Engineers·Girijesh K YadavaKenneth R Hoffmann
May 6, 2004·Proceedings - Society of Photo-Optical Instrumentation Engineers·Iacovos S KyprianouKenneth R Hoffmann
Jul 22, 2011·Physics in Medicine and Biology·Ehsan SameiCarl E Ravin

❮ Previous
Next ❯

Citations

May 3, 2014·Der Radiologe·S Pötter-LangM Uffmann
Jan 3, 2016·European Journal of Radiology·Jost Karsten KlothMarc-André Weber
Apr 23, 2016·Radiation Protection Dosimetry·Robert J CroppYogesh Thakur
Dec 6, 2014·Skeletal Radiology·Jost Karsten KlothMarc-André Weber
May 26, 2016·Australasian Physical & Engineering Sciences in Medicine·Kam L LeeMichael Bernardo
May 26, 2016·Australasian Physical & Engineering Sciences in Medicine·Kam L LeeTimothy A Ireland
Nov 6, 2015·Radiation Protection Dosimetry·A H ClavelA Darbon
Feb 20, 2020·Nihon Hoshasen Gijutsu Gakkai zasshi·Nao IchikawaHiroyuki Yamamoto
Mar 29, 2019·Physics in Medicine and Biology·Marco BertoliniCaterina Ghetti
Sep 27, 2018·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·Sadeq Al-MurshediAndrew England

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.