Abstract：
BACKGROUND:Different iterative reconstruction techniques are available for use in pediatric computed tomography (CT), but these techniques have not been systematically evaluated in infants. OBJECTIVE:To determine the effect of iterative reconstruction on diagnostic performance, image quality and radiation dose in infants undergoing CT evaluation for congenital lung lesions. MATERIALS AND METHODS:A retrospective review of contrast-enhanced chest CT in infants (<1 year) with congenital lung lesions was performed. CT examinations were reviewed to document the type of lung lesion, vascular anatomy, image noise measurements and image reconstruction method. CTDIvol was used to calculate size-specific dose estimates (SSDE). CT findings were correlated with intraoperative and histopathological findings. Analysis of variance and the Student's t-test were used to compare image noise measurements and radiation dose estimates between groups. RESULTS:Fifteen CT examinations used filtered back projection (FBP; mean age: 84 days), 15 used adaptive statistical iterative reconstruction (ASiR; mean age: 93 days), and 11 used model-based iterative reconstruction (MBIR; mean age: 98 days). Compared to operative findings, 13/15 (87%), 14/15 (93%) and 11/11 (100%) lesions were correctly characterized using FBP, ASiR and MBIR, respectively. Arterial anatomy was correctly identified in 12/15 (80%) using FBP, 13/15 (87%) using ASiR and 11/11 (100%) using MBIR. Image noise was less for MBIR vs. ASiR (P < 0.0001). Mean SSDE was different among groups (P = 0.003; FBP = 7.35 mGy, ASiR = 1.89 mGy, MBIR = 1.49 mGy). CONCLUSION:Congenital lung lesions can be adequately characterized in infants using iterative CT reconstruction techniques while maintaining image quality and lowering radiation dose.
journal_name
Pediatr Radioljournal_title
Pediatric radiologyauthors
Haggerty JE,Smith EA,Kunisaki SM,Dillman JRdoi
10.1007/s00247-015-3281-4subject
Has Abstractpub_date
2015-07-01 00:00:00pages
989-97issue
7eissn
0301-0449issn
1432-1998journal_volume
45pub_type
杂志文章abstract：:The clinical, pathologic and roentgenographic features of a case of congenital oxalosis are discussed and contrasted to the more common forms of primary oxalosis. The ease of demonstration of the cortical deposition of calcium oxalate crystals on the CT scanner is reported. ...
journal_title：Pediatric radiology
pub_type： 杂志文章
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更新日期：1980-11-01 00:00:00
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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更新日期：1989-01-01 00:00:00
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更新日期：2005-04-01 00:00:00
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journal_title：Pediatric radiology
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更新日期：2012-04-01 00:00:00
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更新日期：1998-07-01 00:00:00
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journal_title：Pediatric radiology
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更新日期：1975-03-20 00:00:00
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更新日期：2018-09-01 00:00:00
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journal_title：Pediatric radiology
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