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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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Artifacts in Optical Coherence Tomography Angiography.

Pasha Anvari1, Maryam Ashrafkhorasani1, Abbas Habibi1

  • 1Eye Research Center, The Five Senses Institute, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran.

Journal of Ophthalmic & Vision Research
|May 31, 2021
PubMed
Summary
This summary is machine-generated.

Optical coherence tomography angiography (OCTA) image artifacts are common and impact clinical use. Identifying and mitigating these artifacts, such as those from eye motion, is crucial for accurate diagnosis and patient follow-up.

Keywords:
ArtefactCapillary PlexusImage QualityOptical Coherence Tomography AngiographyProjectionSegmentationVessel DensityArtifact

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Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Biomedical Engineering

Background:

  • Optical coherence tomography angiography (OCTA) is a vital non-invasive imaging technique for retinal vasculature.
  • Artifacts in OCTA images can significantly hinder diagnostic accuracy and clinical interpretation.
  • Understanding the sources and characteristics of these artifacts is essential for improving OCTA's utility.

Purpose of the Study:

  • To comprehensively review the literature on artifacts in OCTA images.
  • To identify the types, prevalence, causes, clinical impact, and correction methods for OCTA artifacts.
  • To highlight the significance of artifact recognition for clinical practice.

Main Methods:

  • Systematic literature search conducted in PubMed and Google Scholar.
  • Inclusion of studies detailing OCTA artifacts, their prevalence, etiology, and management.
  • Synthesis of findings regarding common artifact types and their clinical implications.

Main Results:

  • The prevalence of artifacts in OCTA imaging is reported to be high.
  • Common artifact types include those related to eye motion, retinal layer misidentification, projections, and low signal.
  • These artifacts represent major limitations in the clinical application of OCTA.

Conclusions:

  • Artifacts are a significant challenge in OCTA imaging, affecting diagnostic reliability.
  • Effective identification and mitigation strategies for OCTA artifacts are necessary.
  • Addressing artifacts is critical for accurate patient diagnosis and monitoring in ophthalmology.