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Related Concept Videos

Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

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, evaluates...
Imaging Studies for Cardiovascular System II:Types of Echocardiography01:20

Imaging Studies for Cardiovascular System II:Types of Echocardiography

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 diagnosing...
Ultrasonography01:17

Ultrasonography

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 a...
Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

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...
Assessing Blood pressure using a doppler ultrasound01:19

Assessing Blood pressure using a doppler ultrasound

To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:

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Patient-Adaptive Echocardiography using Cognitive Ultrasound.

Wessel L Van Nierop, Oisin Nolan, Tristan S W Stevens

    IEEE Transactions on Medical Imaging
    |May 6, 2026
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel cognitive ultrasound method using posterior sampling and a temporal diffusion model to reconstruct cardiac anatomy from fewer transmits. This approach significantly enhances ultrasound imaging speed and quality, outperforming existing techniques.

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    Area of Science:

    • Medical Imaging
    • Ultrasound Technology
    • Artificial Intelligence in Medicine

    Background:

    • Focused transmits in echocardiography yield low frame rates, limiting real-time imaging.
    • Unfocused transmits offer faster imaging but suffer from motion decorrelation and limited harmonic capabilities.

    Purpose of the Study:

    • To develop a patient-adaptive focused transmit and receive scheme for high-quality ultrasound imaging with reduced transmits.
    • To improve frame rates and image quality in echocardiography using a cognitive ultrasound approach.

    Main Methods:

    • Utilized posterior sampling with a temporal diffusion model for anatomical perception and reconstruction from partial ultrasound data.
    • Implemented an adaptive strategy to acquire the most informative transmits, enhancing image quality.
    • Validated the method on 2D EchoNet-Dynamic and 3D Philips datasets, and in-house echocardiograms.

    Main Results:

    • Outperformed random and equispaced subsampling in distortion and perceptual metrics.
    • Improved generalized contrast-to-noise ratio from 0.83 to 0.89 compared to diverging wave transmits.
    • Achieved real-time performance on GPU accelerators, increasing frame rate from 46 Hz to 58 Hz.
    • Enabled left ventricle segmentation with a 0.91 Dice-Sørensen coefficient using minimal data (2/112 lines).

    Conclusions:

    • The cognitive ultrasound modality significantly reduces necessary transmits while maintaining or improving image quality and speed.
    • This patient-adaptive focused transmit scheme offers a promising advancement for real-time echocardiography and cardiac imaging.