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Updated: Nov 3, 2025

Longitudinal Morphological and Physiological Monitoring of Three-dimensional Tumor Spheroids Using Optical Coherence Tomography
08:50

Longitudinal Morphological and Physiological Monitoring of Three-dimensional Tumor Spheroids Using Optical Coherence Tomography

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Crop Circles in Optical Coherence Tomography

Giuseppe Femia1, David Taylor, Rohan Rajaratnam

  • 1Department of Cardiology, Liverpool Hospital, Elizabeth & Goulburn St, Liverpool NSW 2170, Australia. femia82@gmail.com.

The Journal of Invasive Cardiology
|June 5, 2021
PubMed

Insights

Acute stent thrombosis occurred in a patient with idiopathic thrombocytopenia after coronary intervention. Optical coherence tomography revealed unusual "crop circle" findings, suggesting a potential diagnostic challenge.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Medical Imaging

Background:

  • A 57-year-old female with idiopathic thrombocytopenia experienced myocardial infarction.
  • Percutaneous coronary intervention was performed for right coronary artery stenosis.

Observation:

  • Acute stent thrombosis was diagnosed via angiography.
  • Optical coherence tomography (OCT) was utilized for in-stent evaluation.
  • Catheter advancement was impeded within the stented segment.

Findings:

  • Unusual "crop circle"-like artifacts were observed on OCT imaging.
  • These artifacts extended proximally over several frames.
  • The findings suggest a potential imaging artifact or an unusual intraluminal phenomenon.

Implications:

  • The "crop circle" findings may represent a novel OCT artifact or pathology.
  • Further investigation is needed to understand the etiology and clinical significance.
  • This case highlights potential challenges in OCT interpretation post-intervention.

Keywords:
cardiac imagingcrop circlesoptical coherence tomography

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