Radiation dose and image quality in pediatric chest CT: effects of iterative reconstruction in normal weight and overweight children.
Background: New CT reconstruction techniques may help reduce the burden of ionizing radiation.Objective: To quantify radiation dose reduction when performing pediatric chest CT using a low-dose protocol and 50% adaptive statistical iterative reconstruction (ASIR) compared with age/gender-matched che...
| Publicado en: | Pediatric Radiology Vol. 45; no. 3; pp. 337 - 345 |
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| Autores principales: | , , , , , , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Mar2015
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=109705707&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 109705707 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 03010449 O03 jtl: Pediatric Radiology issn: 03010449 maglogo: N pubinfo: dt: Mar2015 vid: 45 iid: 3 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 109705707 NLM25256153 2012923284 10.1007/s00247-014-3176-9 NLM25256153 109705707 ppf: 337 ppct: 8 formats: fmt: @attributes: type: P tig: atl: Radiation dose and image quality in pediatric chest CT: effects of iterative reconstruction in normal weight and overweight children. aug: au: Yoon, Haesung Kim, Myung-Joon Yoon, Choon-Sik Choi, Jiin Shin, Hyun Joo Kim, Hyun Gi Lee, Mi-Jung sug: ab: Background: New CT reconstruction techniques may help reduce the burden of ionizing radiation.Objective: To quantify radiation dose reduction when performing pediatric chest CT using a low-dose protocol and 50% adaptive statistical iterative reconstruction (ASIR) compared with age/gender-matched chest CT using a conventional dose protocol and reconstructed with filtered back projection (control group) and to determine its effect on image quality in normal weight and overweight children.Materials and Methods: We retrospectively reviewed 40 pediatric chest CT (M:F = 21:19; range: 0.1-17 years) in both groups. Radiation dose was compared between the two groups using paired Student's t-test. Image quality including noise, sharpness, artifacts and diagnostic acceptability was subjectively assessed by three pediatric radiologists using a four-point scale (superior, average, suboptimal, unacceptable).Results: Eight children in the ASIR group and seven in the control group were overweight. All radiation dose parameters were significantly lower in the ASIR group (P < 0.01) with a greater than 57% dose reduction in overweight children. Image noise was higher in the ASIR group in both normal weight and overweight children. Only one scan in the ASIR group (1/40, 2.5%) was rated as diagnostically suboptimal and there was no unacceptable study.Conclusion: In both normal weight and overweight children, the ASIR technique is associated with a greater than 57% mean dose reduction, without significantly impacting diagnostic image quality in pediatric chest CT examinations. However, CT scans in overweight children may have a greater noise level, even when using the ASIR technique. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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