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Related Concept Videos

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.
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Ultrasound I: Abdominal Ultrasonography01:20

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Introduction:
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
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Imaging Studies for Cardiovascular System I:Echocardiography01:17

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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.
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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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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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Related Experiment Video

Updated: Mar 20, 2026

Murine Fetal Echocardiography
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Sonography of Responsive Versus Nonresponsive Ectopic Pregnancies.

Aditi Desai1, Arthur C Fleischer2, Shaun A Wahab3

  • 1Department of Radiology, Nashville, Tennessee USA.

Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine
|May 22, 2016
PubMed
Summary

This study on ectopic pregnancy treatment found that increased vascularity on ultrasound may indicate non-response to methotrexate. Decreased vascularity correlated with a positive treatment response and declining hCG levels.

Keywords:
color Doppler transvaginal sonographygynecologic ultrasoundresponders versus nonresponderstreated ectopic pregnancies

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Area of Science:

  • Reproductive Endocrinology
  • Diagnostic Imaging
  • Pharmacology

Background:

  • Ectopic pregnancy remains a significant cause of maternal morbidity.
  • Systemic methotrexate is a common medical treatment for ectopic pregnancy.
  • Monitoring treatment response is crucial for effective patient management.

Purpose of the Study:

  • To evaluate sonographic changes, including size, vascularity, and cul-de-sac fluid, in patients with ectopic pregnancy treated with methotrexate.
  • To identify potential imaging predictors of treatment response.

Main Methods:

  • A case series of 30 patients with ectopic pregnancy treated with systemic methotrexate.
  • Pre- and post-treatment transvaginal sonography with color Doppler imaging.
  • Assessment of changes in ectopic pregnancy size, vascularity, and cul-de-sac fluid.

Main Results:

  • A trend suggested increased vascularity in non-responders to methotrexate.
  • One responder also exhibited increased vascularity.
  • Increased vascularity in non-responders trended with higher increases in β-human chorionic gonadotropin (hCG).
  • Decreased vascularity in responders trended with greater decreases in β-hCG.

Conclusions:

  • Sonographic vascularity may serve as an indicator for methotrexate treatment response in ectopic pregnancy.
  • Changes in vascularity, alongside β-hCG levels, warrant further investigation for predicting treatment outcomes.