WFRF:(Ullman Anders)
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 04381naa a2200517 4500 | |
| 001 | oai:lup.lub.lu.se:dacc12c4-f807-4b39-8161-20294d2dfb5c | |
| 003 | SwePub | |
| 008 | 160401s2006 | |||||||||||000 ||eng| | |
| 009 | oai:DiVA.org:liu-13220 | |
| 024 | 7 | a https://lup.lub.lu.se/record/6857722 URI |
| 024 | 7 | a https://doi.org/10.1118/1.23628712 DOI |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-132202 URI |
| 040 | a (SwePub)lud (SwePub)liu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a art2 swepub-publicationtype |
| 072 | 7 | a ref2 swepub-contenttype |
| 100 | 1 | a Sandborg, Michaelu Linköpings universitet,Medicinsk radiofysik,Hälsouniversitetet4 aut0 (Swepub:liu)micsa02 |
| 245 | 1 0 | a Comparison of clinical and physical measures of image quality in chest and pelvis computed radiography at different tube voltages |
| 264 | c 2006-10-18 | |
| 264 | 1 | b Wiley,c 2006 |
| 520 | a The aim of this work was to study the dependence of image quality in digital chest and pelvis radiography on tube voltage, and to explore correlations between clinical and physical measures of image quality. The effect on image quality of tube voltage in these two examinations was assessed using two methods. The first method relies on radiologists' observations of images of an anthropomorphic phantom, and the second method was based on computer modeling of the imaging system using an anthropomorphic voxel phantom. The tube voltage was varied within a broad range (50-150 kV), including those values typically used with screen-film radiography. The tube charge was altered so that the same effective dose was achieved for each projection. Two x-ray units were employed using a computed radiography (CR) image detector with standard tube filtration and antiscatter device. Clinical image quality was assessed by a group of radiologists using a visual grading analysis (VGA) technique based on the revised CEC image criteria. Physical image quality was derived from a Monte Carlo computer model in terms of the signal-to-noise ratio, SNR, of anatomical structures corresponding to the image criteria. Both the VGAS (visual grading analysis score) and SNR decrease with increasing tube voltage in both chest PA and pelvis AP examinations, indicating superior performance if lower tube voltages are employed. Hence, a positive correlation between clinical and physical measures of image quality was found. The pros and cons of using lower tube voltages with CR digital radiography than typically used in analog screen-film radiography are discussed, as well as the relevance of using VGAS and quantum-noise SNR as measures of image quality in pelvis and chest radiography. | |
| 650 | 7 | a NATURVETENSKAPx Biologix Biofysik0 (SwePub)106032 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Biological Sciencesx Biophysics0 (SwePub)106032 hsv//eng |
| 653 | a chest radiography | |
| 653 | a signal-to-noise ratio | |
| 653 | a visual grading analysis | |
| 653 | a tube voltage | |
| 653 | a image quality | |
| 653 | a effective dose | |
| 653 | a pelvis radiography | |
| 653 | a computed | |
| 653 | a radiography | |
| 653 | a diagnostic radiography | |
| 653 | a MEDICINE | |
| 700 | 1 | a Tingberg, Andersu Lund University,Lunds universitet,Medicinsk strålningsfysik, Malmö,Forskargrupper vid Lunds universitet,Medical Radiation Physics, Malmö,Lund University Research Groups,Department of Radiation Physics, Malmö University Hospital, Malmö, Sweden4 aut0 (Swepub:lu)rfa-ati |
| 700 | 1 | a Ullman, Gustafu Linköpings universitet,Medicinsk radiofysik,Hälsouniversitetet4 aut0 (Swepub:liu)gusul07 |
| 700 | 1 | a Dance, David R.u Joint Department of Physics, The Royal Marsden NHS Trust and Institute of Cancer Research, London4 aut |
| 700 | 1 | a Alm Carlsson, Gudrunu Linköpings universitet,Medicinsk radiofysik,Hälsouniversitetet4 aut0 (Swepub:liu)gudal03 |
| 710 | 2 | a Linköpings universitetb Medicinsk radiofysik4 org |
| 773 | 0 | t Medical Physicsd : Wileyg 33:11, s. 4169-4175q 33:11<4169-4175x 0094-2405 |
| 856 | 4 | u http://dx.doi.org/10.1118/1.2362871y FULLTEXT |
| 856 | 4 | u http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11662y Link to Ph.D. thesis |
| 856 | 4 8 | u https://lup.lub.lu.se/record/685772 |
| 856 | 4 8 | u https://doi.org/10.1118/1.2362871 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-13220 |
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