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Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

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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...
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Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

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IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
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Imaging Studies for Cardiovascular System II:Types of Echocardiography01:20

Imaging Studies for Cardiovascular System II:Types of Echocardiography

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Echocardiography plays a role in assessing cardiac health and detecting heart conditions, with various types providing critical insights for diagnosis and treatment.
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for...
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Fetal Circulation01:14

Fetal Circulation

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Fetal circulation is a unique system that facilitates the exchange of gases, nutrients, and waste products between the developing fetus and the mother. This intricate process takes place through a special organ called the placenta.
Two umbilical arteries transport blood from the fetus to the placenta. At the placenta, the blood absorbs oxygen and nutrients while simultaneously eliminating waste products. This oxygen-enriched and nutrient-rich blood then returns to the fetus through one...
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Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

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Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion,...
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Ultrasonography01:17

Ultrasonography

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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
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Related Experiment Video

Updated: Oct 2, 2025

Human Fetal Blood Flow Quantification with Magnetic Resonance Imaging and Motion Compensation
06:56

Human Fetal Blood Flow Quantification with Magnetic Resonance Imaging and Motion Compensation

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Update on Color Flow Imaging in Obstetrics.

Kwok-Yin Leung1, Yung-Liang Wan2

  • 1Gleneagles Hospital Hong Kong, Hong Kong, China.

Life (Basel, Switzerland)
|February 25, 2022
PubMed
Summary

This review explores advanced color flow imaging (CFI) techniques in obstetrics, highlighting new modes like high-definition flow imaging (HDFI) and microvascular flow imaging (MVFI) for improved fetal and placental circulation assessment.

Keywords:
3D/4D ultrasoundSTICcolor Dopplerobstetricsradiant flowsuperb microvascular imaging

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Area of Science:

  • Medical imaging
  • Obstetrics and Gynecology
  • Ultrasound technology

Background:

  • Color flow imaging (CFI) is essential for non-invasive assessment of fetal and placental circulations in obstetrics.
  • Conventional modes include color Doppler flow imaging (CDFI) and power Doppler imaging (PDI).
  • Emerging CFI technologies offer enhanced visualization and diagnostic capabilities.

Purpose of the Study:

  • To review the characteristics and applications of various CFI modes in obstetrics.
  • To present how new CFI technologies are integrated into diagnostic and morphology scans.
  • To compare the advantages of newer CFI modes over conventional techniques.

Main Methods:

  • Review of current literature on advanced Color Flow Imaging (CFI) modalities.
  • Analysis of the technical characteristics and clinical applications of new CFI modes.
  • Discussion of integration into obstetric ultrasound examinations.

Main Results:

  • High-definition flow imaging (HDFI) offers superior resolution and sensitivity for detecting slow flows compared to CDFI.
  • Microvascular flow imaging (MVFI) enhances sensitivity to fine, low-flow vessels with reduced motion artifacts.
  • Radiant flow and glass-body mode provide improved depth perception, reduced overflow, and better visualization of spatio-temporal flow dynamics.

Conclusions:

  • Advanced CFI modes like HDFI, MVFI, radiant flow, and glass-body mode significantly enhance obstetric ultrasound diagnostics.
  • These technologies improve the detection of subtle flow abnormalities and provide detailed anatomical and functional information.
  • Integration of these advanced CFI techniques into routine obstetric scans promises more accurate and comprehensive fetal and placental assessments.