Low-dose CT of postoperative pelvic fractures: a comparison with radiography.
Acta Radiol
; 60(1): 85-91, 2019 Jan.
Article
em En
| MEDLINE
| ID: mdl-29665704
ABSTRACT
BACKGROUND:
Computed tomography (CT) is superior to conventional radiography (CR) for assessing internal fixation of pelvic fractures, but with a higher radiation exposure. Low-dose CT (LDCT) could possibly have a sufficient diagnostic accuracy but with a lower radiation dose.PURPOSE:
To compare postoperative diagnostic accuracy of LDCT and CR after open reduction and internal fixation of pelvic fracture. MATERIAL ANDMETHODS:
Twenty-one patients were examined with LDCT and CR 0-9 days after surgery. The examinations were reviewed by two musculoskeletal radiologists. Hardware, degree of fracture reduction, image quality, and reviewing time were assessed, and effective radiation dose was calculated. Inter-reader agreement was calculated.RESULTS:
LDCT was significantly better than CR in determining whether hardware positioning was assessable ( P < 0.001). Acetabular congruence was assessable in all fractured patients with LDCT. In 12 of the 32 assessments with CR of patients with an acetabular fracture, joint congruence was not assessable due to overlapping hardware ( P = 0.001). Image quality was significantly higher for LDCT. Median time to review was 240 s for LDCT compared to 180 s for CR. Effective dose was 0.79 mSv for LDCT compared to 0.32 mSv for CR ( P < 0.001).CONCLUSION:
LDCT is more reliable than CR in assessing hardware position and fracture reduction. Joint congruency is sometimes not possible to assess with CR, due to overlapping hardware. The image quality is higher, but also the effective dose, with LDCT than with CR.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ossos Pélvicos
/
Doses de Radiação
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Tomografia Computadorizada por Raios X
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Fraturas Ósseas
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Fixação Interna de Fraturas
Tipo de estudo:
Diagnostic_studies
Limite:
Adult
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Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Acta Radiol
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Suécia