Sunflower Artifact in OCT

Elahi, Sahar; Mancuso, James J.; Milner, Thomas E.; Feldman, Marc D.

doi:10.1016/j.jcmg.2011.04.022

Cited by 9 publications

(5 citation statements)

References 1 publication

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“…The resultant image reconstruction orients the strut perpendicular to the catheter similar to orientation of sunflowers toward the sun. Sunflower effect gives an appearance of strut malapposition and artificially increases strut to vessel wall distance (Figure 5J) (14).…”

Section: Sunflower Effectmentioning

confidence: 99%

Optical coherence tomography: fundamentals and clinical utility

Subban

Raffel²

2020

Cardiovasc Diagn Ther

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Although coronary angiography is the standard method employed to assess the severity of coronary artery disease and to guide treatment strategies, it provides only 2D image of the intravascular lesions. In contrast, intravascular imaging modalities such as optical coherence tomography (OCT) produce cross-sectional images of the coronary arteries at a far greater spatial resolution, capable of accurately determining vessel size as well as plaque morphology, eliminating many of the disadvantages inherent to angiography. This review will discuss the role of OCT in the catherization laboratory for the assessment and management of coronary disease.

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Section: Sunflower Effectmentioning

confidence: 99%

Optical coherence tomography: fundamentals and clinical utility

Subban

Raffel²

2020

Cardiovasc Diagn Ther

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“…Due to oblique light reflection, the struts may seem malapposed to the vessel wall and lead to misinterpretation of the apposition measurement and lead to misinterpretations in the apposition measurements and inaccuracy of the measurement (Supporting Information Fig. S2) .…”

Section: Metallic Stent and Bioresorbable Scaffold Strut Detectionmentioning

confidence: 99%

Intracoronary optical coherence tomography: Clinical and research applications and intravascular imaging software overview

Tenekecioğlu

Albuquerque

Sotomi

et al. 2017

Cathet Cardio Intervent

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By providing valuable information about the coronary artery wall and lumen, intravascular imaging may aid in optimizing interventional procedure results and thereby could improve clinical outcomes following percutaneous coronary intervention (PCI). Intravascular optical coherence tomography (OCT) is a light-based technology with a tissue penetration of approximately 1 to 3 mm and provides near histological resolution. It has emerged as a technological breakthrough in intravascular imaging with multiple clinical and research applications. OCT provides detailed visualization of the vessel following PCI and provides accurate assessment of post-procedural stent performance including detection of edge dissection, stent struts apposition, tissue prolapse, and healing parameters. Additionally, it can provide accurate characterization of plaque morphology and provides key information to optimize post-procedural outcomes. This manuscript aims to review the current clinical and research applications of intracoronary OCT and summarize the analytic OCT imaging software packages currently available. © 2017 Wiley Periodicals, Inc.

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“…Vessel phantom construction and deployment of a 3 × 8 CYPHER ® Sirolimus-eluting coronary stent (Cordis Corporation, Miami Lakes, Florida) were described previously [10,11]. High resolution Micro-CT imaging ( …”

Section: Micro-ct Imagingmentioning

confidence: 99%

“…Apparent strut size in a phantom: a) centered catheter, b) eccentric catheter where strut size minimized (both arrows) and sunflowered (large arrow), malapposition measurement: c) approach 1; yellow line is drawn from center of strut blooming to the luminal wall indicating the shortest distance, d) approach 2; box is positioned so that edge is coincident with the leading edge of the stent and green line is drawn perpendicular to the box-edge. Recently Elahi et al reported [10] studies involving coronary arteries, vessel phantoms and computer simulations that suggest light returning to an IVOCT catheter from a metallic strut surface reflects from a small and unspecified region with nearly constant optical pathlength. Elahi et al suggested that additional studies using well-characterized stents may provide a better estimate of the location on the stent strut from where light is reflecting into the catheter.…”

Section: Introductionmentioning

confidence: 99%

Intravascular optical coherence tomography measurement of size and apposition of metallic stents

Elahi

Feldman

Dijkstra

et al. 2013

Biomed. Opt. Express

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Effect of beam size and catheter position on the apparent size and apposition of metallic stent struts in IVOCT images were examined. Micro-CT data was employed to determine light -stent strut interactions. Simulated results suggest that location of the reflecting regions depend on relative orientation and position of stent struts to the IVOCT beam. Erroneous stent apposition measurements can occur when the IVOCT catheter is at an eccentric position. A method that mitigates stent strut apposition measurement errors is proposed. Coherence Tomography (IWG-IVOCT), "Consensus standards for acquisition, measurement, and reporting of intravascular optical coherence tomography studies: a report from the International working group for intravascular optical coherence tomography standardization and validation," J. Am.

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Sunflower Artifact in OCT

Cited by 9 publications

References 1 publication

Optical coherence tomography: fundamentals and clinical utility

Optical coherence tomography: fundamentals and clinical utility

Intracoronary optical coherence tomography: Clinical and research applications and intravascular imaging software overview

Intravascular optical coherence tomography measurement of size and apposition of metallic stents

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