Submillisievert CT using model-based iterative reconstruction with lung-specific setting: An initial phantom study.
Objective: To assess image quality of filtered back-projection (FBP) and model-based iterative reconstruction (MBIR) with a conventional setting and a new lung-specific setting on submillisievert CT.Methods: A lung phantom with artificial nodules was scanned with 10 mA at 120 kVp and 80 kVp (0.14 mS...
| Publicado en: | European Radiology Vol. 26; no. 12; pp. 4457 - 4465 |
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| Autores principales: | , , , , , |
| Formato: | diagnostic images research tables/charts Journal Article |
| Publicado: |
Springer Nature
Dec2016
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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=119335385&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 119335385 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Dec2016 vid: 26 iid: 12 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 119335385 119335385 NLM26988356 119335385 10.1007/s00330-016-4307-5 NLM26988356 119335385 ppf: 4457 ppct: 8 formats: fmt: @attributes: type: P tig: atl: Submillisievert CT using model-based iterative reconstruction with lung-specific setting: An initial phantom study. aug: au: Hata, Akinori Yanagawa, Masahiro Honda, Osamu Gyobu, Tomoko Ueda, Ken Tomiyama, Noriyuki affil: Department of Diagnostic and Interventional Radiology , Osaka University Graduate School of Medicine , 2-2 Yamadaoka Suita Japan sug: subj: Tomography, X-Ray Computed Methods Lung Radiographic Image Interpretation, Computer-Assisted Methods Models, Theoretical Phantoms, Imaging Radiation Dosage Algorithms ab: Objective: To assess image quality of filtered back-projection (FBP) and model-based iterative reconstruction (MBIR) with a conventional setting and a new lung-specific setting on submillisievert CT.Methods: A lung phantom with artificial nodules was scanned with 10 mA at 120 kVp and 80 kVp (0.14 mSv and 0.05 mSv, respectively); images were reconstructed using FBP and MBIR with conventional setting (MBIRStnd) and lung-specific settings (MBIRRP20/Tx and MBIRRP20). Three observers subjectively scored overall image quality and image findings on a 5-point scale (1 = worst, 5 = best) compared with reference standard images (50 mA-FBP at 120, 100, 80 kVp). Image noise was measured objectively.Results: MBIRRP20/Tx performed significantly better than MBIRStnd for overall image quality in 80-kVp images (p < 0.01), blurring of the border between lung and chest wall in 120p-kVp images (p < 0.05) and the ventral area of 80-kVp images (p < 0.001), and clarity of small vessels in the ventral area of 80-kVp images (p = 0.037). At 120 kVp, 10 mA-MBIRRP20 and 10 mA-MBIRRP20/Tx showed similar performance to 50 mA-FBP. MBIRStnd was better for noise reduction. Except for blurring in 120 kVp-MBIRStnd, MBIRs performed better than FBP.Conclusion: Although a conventional setting was advantageous in noise reduction, a lung-specific setting can provide more appropriate image quality, even on submillisievert CT.Key Points: • Lung-specific submillisievert 10 mA-MBIR CT setting has similar performance to 50 mA-FBP • The new lung-specific settings improve vessel clarity and blurring of borders • The new settings may provide more appropriate images than conventional settings. pubtype: Academic Journal doctype: diagnostic images research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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