Low-Dose Computed Tomography of the Chest Using Iterative Reconstruction Versus Filtered Back Projection: Comparison of Image Quality
- Title
- Low-Dose Computed Tomography of the Chest Using Iterative Reconstruction Versus Filtered Back Projection: Comparison of Image Quality
- Author
- 이유경
- Keywords
- lung; computed tomography; iterative reconstruction; radiation dose; image quality
- Issue Date
- 2012-09
- Publisher
- Lippincott Williams and Wilkins
- Citation
- Journal of computer assisted tomography, 2012, 36(5), P.512-517
- Abstract
- Objective: The purpose of this study was to compare image quality of iterative reconstruction (IR) to filtered back projection (FBP) in low-dose computed tomography of the chest. Methods: Forty-three consecutive patients were retrospectively enrolled. Eight series of images were reconstructed using FBP and 7 levels of IR in each subject. Image noise, signal-to-noise ratio (SNR), and SNR improvement were measured. Two radiologists evaluated subjective artifact, image artificiality, and subjective overall image quality with 4- or 5-point scales. Results: Iterative reconstruction showed significantly lower image noise (135.5 +/- 36.6 vs 219.9 +/- 40.9) and higher SNR (0.36 +/- 0.12 vs 0.21 +/- 0.05) than FBP (P < 0.001). Signal-to-noise ratio improvement was 72.4% +/- 44.9%. Subjective artifact of FBP was significantly higher than IR images (P < 0.001). Image artificiality of IR was significantly higher than that of FBP (P < 0.001). Overall, subjective image quality was poor in FBP and acceptable or good in IR. Conclusions: With the use of IR, low-dose computed tomography of the chest would achieve less image noise and better image quality compared to the FBP.
- URI
- https://journals.lww.com/jcat/pages/articleviewer.aspx?year=2012&issue=09000&article=00002&type=abstracthttp://hdl.handle.net/20.500.11754/50168
- ISSN
- 0363-8715
- DOI
- 10.1097/RCT.0b013e318260ce39
- Appears in Collections:
- COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML