title: Coronary bifurcation stent morphology in dual-source CT: validation with micro-CT.
abstract: The aim of this study is to analyze post-bifurcation coronary stent morphology in vitro using dual-source CT and validate those findings using micro-CT. Nine silicon coronary artery phantoms simulating main branch (MB) and side branch (SB) were prepared using a 3-D printer. After bifurcation stenting using Crush, Culotte, and T-stenting technique, in vitro CT imaging was conducted using both dual-source CT and micro-CT. Morphological change of the bifurcation stent including crushed segment and floating stent strut were evaluated. Dual-source CT was able to demonstrate morphologic changes of bifurcation stents and was comparable to micro-CT. In stents with Crush and T-stenting methods, crushed segment appeared denser and thicker than other stent parts and was located at MB side in all phantoms. Floating strut was observed in half of the phantoms with Crush technique and all phantoms with T-stenting. Parameters measured in both dual-source CT and micro-CT showed good correlation and high agreement (limits of agreement and correlation for length, perimeter and area, 0.3 ± 3.5, 0.5 ± 2.1 mm, and 0.0 ± 1.5 mm², r = 0.76, 0.92, and 0.91). The morphology of post-bifurcation stent on dual-source CT correlates well with that of micro-CT in the coronary artery phantom. Coronary CT angiography may be a feasible method for the evaluation of stent morphology in patients who underwent bifurcation stenting.
authors: Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olimpic-ro 43 gil, Songpa-gu, 05505, Seoul, South Korea.
authors: Hye-Joung
authors: HJ
authors: Eom
authors: Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olimpic-ro 43 gil, Songpa-gu, 05505, Seoul, South Korea. donghyun.yang@gmail.com.
authors: Dong Hyun
authors: DH
authors: Yang
authors: Department of Cardiology and Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
authors: Young-Hak
authors: YH
authors: Kim
authors: Department of Cardiology and Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
authors: Jae-Hyung
authors: JH
authors: Roh
authors: Department of Cardiology and Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
authors: Jihoon
authors: J
authors: Kweon
authors: Department of Cardiology and Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
authors: Soo-Jin
authors: SJ
authors: Kang
authors: Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olimpic-ro 43 gil, Songpa-gu, 05505, Seoul, South Korea.
authors: Namkug
authors: N
authors: Kim
authors: Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olimpic-ro 43 gil, Songpa-gu, 05505, Seoul, South Korea.
authors: Joon-Won
authors: JW
authors: Kang
authors: Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olimpic-ro 43 gil, Songpa-gu, 05505, Seoul, South Korea.
authors: Tae-Hwan
authors: TH
authors: Lim
mesh_terms: D000368:Aged; D000072226:Computed Tomography Angiography; D017023:Coronary Angiography / Q000379:methods*; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000628:therapy*; D003331:Coronary Vessels / Q000000981:diagnostic imaging*; D005240:Feasibility Studies; D006801:Humans; D008955:Models, Cardiovascular; D062645:Percutaneous Coronary Intervention / Q000295:instrumentation*; D019047:Phantoms, Imaging; D011237:Predictive Value of Tests; D011474:Prosthesis Design; D015203:Reproducibility of Results; D015607:Stents; D041623:Tomography, Optical Coherence; D055114:X-Ray Microtomography
keywords: Bifurcation stent; CT; Micro CT