Image quality of low mA CT pulmonary angiography reconstructed with model based iterative reconstruction versus standard CT pulmonary angiography reconstructed with filtered back projection: an equivalency trial.
Objective: To determine whether CT pulmonary angiography (CTPA) using low mA setting reconstructed with model-based iterative reconstruction (MBIR) is equivalent to routine CTPA reconstructed with filtered back projection (FBP).Methods: This prospective study was approved by the institutional review...
| Publicado en: | European Radiology Vol. 25; no. 6; pp. 1665 - 1672 |
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| Autores principales: | , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Jun2015
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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=109732010&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 109732010 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Jun2015 vid: 25 iid: 6 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 109732010 NLM25528671 2012995362 10.1007/s00330-014-3563-5 NLM25528671 109732010 ppf: 1665 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Image quality of low mA CT pulmonary angiography reconstructed with model based iterative reconstruction versus standard CT pulmonary angiography reconstructed with filtered back projection: an equivalency trial. aug: au: Montet, Xavier Hachulla, Anne-Lise Neroladaki, Angeliki Lador, Frederic Rochat, Thierry Botsikas, Diomidis Becker, Christoph D sug: subj: Tomography, X-Ray Computed Methods Lung Blood Supply Lung Image Processing, Computer Assisted Methods Angiography Methods Prospective Studies Female Human Sensitivity and Specificity Male Middle Age Radiographic Image Interpretation, Computer-Assisted Methods Models, Theoretical Validation Studies Comparative Studies Evaluation Research Multicenter Studies Ferrans and Powers Quality of Life Index Middle Aged: 45-64 years Female Male ab: Objective: To determine whether CT pulmonary angiography (CTPA) using low mA setting reconstructed with model-based iterative reconstruction (MBIR) is equivalent to routine CTPA reconstructed with filtered back projection (FBP).Methods: This prospective study was approved by the institutional review board and patients provided written informed consent. Eighty-two patients were examined with a low mA MBIR-CTPA (100 kV, 20 mA) and 82 patients with a standard FBP-CTPA (100 kV, 250 mA). Region of interests were drawn in nine pulmonary vessels; signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were calculated. A five-point scale was used to subjectively evaluate the image quality of FBP-CTPA and low mA MBIR-CTPA.Results: Compared to routine FBP-CTPA, low mA MBIR-CTPA showed no differences in the attenuation measured in nine pulmonary vessels, higher SNR (56 ± 19 vs 43 ± 20, p < 0.0001) and higher CNR (50 ± 17 vs 38 ± 18, p < 0.0001) despite a dose reduction of 93 % (p < 0.0001). The subjective image quality of low mA MBIR-CTPA was quoted as diagnostic in 98 % of the cases for patient with body mass index less than 30 kg/m(2).Conclusion: Low mA MBIR-CTPA is equivalent to routine FBP-CTPA and allows a significant dose reduction while improving SNR and CNR in the pulmonary vessels, as compared with routine FBP-CTPA.Key Points: • Low mA MBIR-CTPA is equivalent to routine FBP-CTPA. • MBIR-CTPA may be achieved with drastic (93 %) dose reduction. • Low mA MBIR-CTPA should be studied in the setting of suspected PE. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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