Low-Dose Computed Tomography of the Chest Using Iterative Reconstruction Versus Filtered Back Projection: Comparison of Image Quality
- Authors
- Lee, Youkyung; Jin, Kwang Nam; Lee, Nyoung Keun
- Issue Date
- Sep-2012
- Publisher
- LIPPINCOTT WILLIAMS & WILKINS
- Keywords
- lung; computed tomography; iterative reconstruction; radiation dose; image quality
- Citation
- JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY, v.36, no.5, pp.512 - 517
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY
- Volume
- 36
- Number
- 5
- Start Page
- 512
- End Page
- 517
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/142746
- DOI
- 10.1097/RCT.0b013e318260ce39
- ISSN
- 0363-8715
- 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.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 의과대학 > 서울 영상의학교실 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/142746)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.