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Related Concept Videos

Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
Imaging Studies for Cardiovascular System III: X-Ray01:20

Imaging Studies for Cardiovascular System III: X-Ray

The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...

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Related Experiment Video

Updated: Jun 4, 2026

Application of Optical Coherence Tomography to a Mouse Model of Retinopathy
08:22

Application of Optical Coherence Tomography to a Mouse Model of Retinopathy

Published on: January 12, 2022

[Imaging port wine stain by optical coherence tomography].

Shi-Yong Zhao1, Xin Yu, Hai-Xia Qiu

  • 1School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China. totio@126.com

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|February 17, 2011
PubMed
Summary

Optical coherence tomography (OCT) advances biomedical imaging. This study enhanced OCT

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Area of Science:

  • Biomedical Engineering
  • Optical Imaging
  • Dermatology

Background:

  • Optical coherence tomography (OCT) offers noninvasive, high-resolution, and rapid imaging for biomedical applications.
  • High scattering in biological tissues limits OCT's penetration depth, restricting its use in dermatology.
  • Port wine stains (PWS) present superficial vascular lesions, making them suitable for OCT imaging.

Purpose of the Study:

  • To enhance the penetration depth of OCT for improved imaging of superficial skin conditions like PWS.
  • To demonstrate the in vivo imaging capability of an optimized OCT system for PWS.
  • To assess OCT's utility in quantifying key parameters relevant to PWS diagnosis and treatment.

Main Methods:

  • Utilized a 1310 nm superluminescent diode as the light source to achieve deeper tissue penetration.
  • Optimized the light intensity ratio between the reference and sample arms.
  • Implemented polarization control techniques to improve image quality and penetration depth.

Main Results:

  • Successfully achieved in vivo imaging of PWS with enhanced penetration depth.
  • Acquired clear OCT images revealing structural details of PWS lesions.
  • Quantified critical parameters including epidermal depth and blood vessel diameter.

Conclusions:

  • The optimized OCT system demonstrates significant potential for in vivo PWS imaging.
  • OCT can provide valuable quantitative data for the diagnosis and therapeutic monitoring of PWS.
  • Enhanced OCT imaging deepens its applicability in dermatological research and clinical practice.