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Low-dose computed t...
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Alshamari, Muhammed,1975-Örebro universitet,Institutionen för hälsovetenskap och medicin,Region Örebro län,Department of Radiology, Örebro University Hospital, Örebro, Sweden
(författare)
Low-dose computed tomography of the lumbar spine: a phantom study on imaging parameters and image quality
- Artikel/kapitelEngelska2014
Förlag, utgivningsår, omfång ...
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2014-09-01
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SAGE Publications,2014
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electronicrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:lup.lub.lu.se:9c387b12-b96c-42b3-817e-2dcd3d2e2ce1
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https://lup.lub.lu.se/record/4803554URI
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https://doi.org/10.1177/0284185113509615DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-38243URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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Background: Lumbar spine radiography has limited diagnostic value but low radiation dose compared with computed tomography (CT). The average effective radiation dose from lumbar spine radiography is about 1.1 mSv. Low-dose lumbar spine CT may be an alternative to increase the diagnostic value at low radiation dose, around 1 mSv. Purpose: To determine the optimal settings for low-dose lumbar spine CT simultaneously aiming for the highest diagnostic image quality possible. Material and Methods: An ovine lower thoracic and lumbar spine phantom, with all soft tissues around the vertebrae preserved except the skin, was placed in a 20 L plastic container filled with water. The phantom was scanned repeatedly with various technical settings; different tube potential, reference mAs, and with different convolution filters. Five radiologists evaluated the image quality according to a modification of the European guidelines for multislice computed tomography (MSCT) quality criteria for lumbar spine CT 2004. In a visual comparison the different scans were also ranked subjectively according to perceived image quality. Image noise and contrast were measured. Results: A tube potential of 120 kV with reference mAs 30 and medium or medium smooth convolution filter gave the best image quality at a sub-millisievert dose level, i.e. with an effective dose comparable to that from lumbar spine radiography. Conclusion: Low-dose lumbar spine CT thus opens a possibility to substitute lumbar spine radiography with CT without obvious increase in radiation dose.
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Geijer, MatsLund University,Lunds universitet,Diagnostisk radiologi, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Diagnostic Radiology, (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Center for Medical Imaging and Physiology, Skåne University Hospital, Lund, Sweden; Lund University, Lund, Sweden(Swepub:oru)msgr
(författare)
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Norrman, Eva,1966-Region Örebro län(Swepub:oru)evnn
(författare)
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Geijer, Håkan,1961-Örebro universitet,Institutionen för hälsovetenskap och medicin,Region Örebro län,Department of Radiology, Örebro University Hospital, Örebro, Sweden(Swepub:oru)hngr
(författare)
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Örebro universitetInstitutionen för hälsovetenskap och medicin
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Acta Radiologica: SAGE Publications55:7, s. 824-8321600-04550284-1851
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