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Value of Computed Tomography Radiomic Features for Differentiation of Periprosthetic Mass in Patients With Suspected Prosthetic Valve Obstruction

Authors
 Kyungsun Nam  ;  Young Joo Suh  ;  Kyunghwa Han  ;  Sang Joon Park  ;  Young Jin Kim  ;  Byoung Wook Choi 
Citation
 CIRCULATION-CARDIOVASCULAR IMAGING, Vol.12(11) : e009496, 2019 
Journal Title
 CIRCULATION-CARDIOVASCULAR IMAGING 
ISSN
 1941-9651 
Issue Date
2019
Keywords
echocardiography ; heart valve prosthesis ; multidetector computed tomography ; retrospective studies
Abstract
BACKGROUND: We aimed to determine whether quantitative computed tomography radiomic features can aid in differentiating between the causes of prosthetic valve obstruction (PVO) in patients who had undergone prosthetic valve replacement. METHODS: This retrospective study included 39 periprosthetic masses in 34 patients who underwent cardiac computed tomography scan from January 2014 to August 2017 and were clinically suspected as PVO. The cause of PVO was assessed by redo-surgery and follow-up imaging as standard reference, and classified as pannus, thrombus, or vegetation. Visual analysis was performed to assess the possible cause of PVO on axial and valve-dedicated views. Computed tomography radiomic analysis of periprosthetic masses was performed and radiomic features were extracted. The advantage of radiomic score compared with visual analysis for differentiation of pannus from other abnormalities was assessed. RESULTS: Of 39 masses, there were 20 cases of pannus, 11 of thrombus, and 8 of vegetation on final diagnosis. The radiomic score was significantly higher in the pannus group compared with nonpannus group (mean, -0.156±0.422 versus -0.883±0.474; P<0.001). The area under the curve of radiomic score for diagnosis of pannus was 0.876 (95% CI, 0.731-0.960). Combination of radiomic score and visual analysis showed a better performance for the differentiation of pannus than visual analysis alone. CONCLUSIONS: Compared with visual analysis, computed tomography radiomic features may have added value for differentiating pannus from thrombus or vegetation in patients with suspected PVO.
Full Text
https://www.ahajournals.org/doi/full/10.1161/CIRCIMAGING.119.009496
DOI
10.1161/CIRCIMAGING.119.009496
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
5. Research Institutes (연구소) > Others (기타) > 1. Journal Papers
Yonsei Authors
Kim, Young Jin(김영진) ORCID logo https://orcid.org/0000-0002-6235-6550
Nam, Kyungsun(남경선)
Suh, Young Joo(서영주) ORCID logo https://orcid.org/0000-0002-2078-5832
Choi, Byoung Wook(최병욱) ORCID logo https://orcid.org/0000-0002-8873-5444
Han, Kyung Hwa(한경화)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/174569
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