Impact of Image Reconstruction Parameters on Abdominal Aortic Calcification Measurement Using Abdominal Computed Tomography
| Autor: | Numan Kutaiba, Fiona Song, Ruth P. Lim, Michael Galea, Xiao Chen, Tim Spelman, Jeannette McGill, Joseph Oliver, Layal Abdelganne |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Male
Radiography Abdominal Slice thickness Aortic Diseases Computed tomography Iterative reconstruction medicine Humans Radiology Nuclear Medicine and imaging Aorta Abdominal Vascular Calcification Retrospective Studies medicine.diagnostic_test business.industry Reproducibility of Results Mean age Middle Aged Concordance correlation coefficient Abdominal aortic calcification Radiographic Image Interpretation Computer-Assisted Female Abdominal computed tomography Tomography X-Ray Computed business Nuclear medicine Cardiovascular outcomes |
| Zdroj: | Journal of Computer Assisted Tomography. 45:849-855 |
| ISSN: | 1532-3145 0363-8715 |
| DOI: | 10.1097/rct.0000000000001226 |
| Popis: | Abdominal aortic calcification (AAC) is correlated with cardiovascular outcomes independent of traditional risk factors. Quantification of AAC on computed tomography (CT) has not been standardized. Reconstruction parameters have been shown to impact coronary calcium scores. The aim of our study was to assess the impact of abdominal CT reconstruction parameters, slice thickness (ST), and display field of view (DFOV) on AAC quantitative scoring on abdominal CT examinations.We retrospectively measured AAC on noncontrast CT of 46 patients (mean age, 64.1 years; 35 males) using 5 different reconstruction protocols with a range of ST and DFOV: protocol A, 2.5 mm ST, 35 cm DFOV; protocol B, 2.5 mm ST, 50 cm DFOV; protocol C, 2.5 mm ST, 25 cm DFOV; protocol D, 5 mm ST, 35 cm DFOV; and protocol E: 0.625 mm ST, 35 cm DFOV. The AAC scores from each protocol were compared using concordance correlation coefficient and Bland-Altman agreement analyses.The AAC mean (SD) scores for each protocol were as follows: A, 2022 (2418); B, 2022 (2412); C, 1939 (2310); D, 2220 (2695); and E, 1862 (2234). The AAC mean score differences between protocols and reference protocol A were -0.47, 82.01, -198.94, and 160 for protocols B, C, D, and E, respectively, with differences between protocols C to E statistically significantly different (P0.05). The different protocols showed overall excellent correlation (concordance correlation coefficient,0.9) between AAC scores.Slice thickness and DFOV can impact AAC score measurement. A description of reconstruction parameters is important to allow comparisons across different cohorts. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|