Radial Endobronchial Ultrasound
Radial Endobronchial Ultrasound - Related Videos
05:22
Systematic Endobronchial Ultrasound - The Six Landmarks Approach
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Cited by 2 •
2023
Endobronchial ultrasound-guided sampling using transbronchial needle aspiration plays a key role in staging and diagnosing lung cancer. We propose a systematic stepwise approach dividing the procedure into six landmarks that should be taught to new operators.
04:35
Using the Endoscope for Endobronchial Ultrasound in the Esophagus
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2023
Transesophageal ultrasound (EUS-B) is a safe and feasible procedure using the echoendobronchoscope (EBUS) in esophagus and stomach. After identifying six anatomical landmarks, additional structures can be identified and biopsied, sparing subsequent diagnostic sessions. Thus, EUS-B is an ideal continuation of bronchoscopy and EBUS in diagnosing lung cancer and other diseases.
10:19
Substernal Thyroid Biopsy Using Endobronchial Ultrasound-guided Transbronchial Needle Aspiration
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Cited by 7 •
2014
Substernal thyroid lesions are common, and need to be differentiated from malignancy. Obtaining percutaneous fine needle biopsy is not possible due to its retrosternal location. This article proposes a protocol for biopsy of substernal thyroid lesions using Endobronchial Ultrasound-guided Transbronchial Needle Aspiration (EBUS-TBNA).
09:00
Murine Echocardiography and Ultrasound Imaging
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Cited by 61 •
2010
This video demonstrates use of a rail-mounted high-frequency ultrasound probe to perform echocardiography on an anesthetized mouse. The methods describe both conventional two-dimensional and M-mode measurements of cardiac function in addition to newer, more powerful tools such as color Doppler, strain analysis, as well as general and targeted contrast imaging.
01:23
Radial System Protection
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2024
Radial systems employ time-delay overcurrent relays to reduce load interruptions. When a fault occurs, the nearest breaker opens first, while upstream breakers remain closed due to longer delay settings. This approach ensures minimal disruption to the rest of the system. In a radial system with a fault downstream of the third breaker, ideally, only the third breaker will open, isolating the fault and interrupting the load connected beyond it. The second breaker has a longer delay setting,...
FAQs
The ultrasound image depends on how strongly different tissues reflect sound. Airway walls, lung tissue, and abnormal lesions produce different acoustic patterns, allowing structures beyond the airway wall to be visualized. These differences help clinicians recognize whether the probe has reached a region containing a peripheral lesion and support more accurate targeting during subsequent sampling.
As the small probe rotates, it collects ultrasound information around the airway rather than from only one direction. This creates 360-degree cross-sectional images that show the relationship between the airway and nearby tissue. That spatial information is important when a lesion cannot be directly seen from inside the airway and must be approached through transbronchial sampling.
Successful sampling depends on positioning the probe in relation to the abnormality, not merely advancing it into a nearby airway. Once imaging identifies the lesion, a guide sheath can help preserve that location while instruments are used for sampling. Maintaining this alignment improves diagnostic targeting and reduces the chance of collecting tissue from an unrepresentative area.
The probe is advanced through a bronchoscope toward the suspected peripheral abnormality. Rotational imaging is then used to visualize structures beyond the airway wall and identify the lesion’s location. After localization, a guide sheath may maintain access to the target while transbronchial biopsy samples are obtained for diagnostic evaluation.
Its main value lies in evaluating peripheral lung nodules and other pulmonary abnormalities that may be difficult to assess directly through bronchoscopy. The technique is especially relevant when clinicians are investigating suspected lung cancer, because it can guide tissue acquisition while avoiding procedures that are more invasive than bronchoscopic sampling.
Radial endobronchial ultrasound provides cross-sectional visualization of the relationship between a peripheral lesion, the airway, and surrounding lung tissue. This helps clinicians identify and characterize the target before biopsy rather than sampling without imaging guidance. The resulting localization information supports better diagnostic targeting and can make evaluation of suspected pulmonary disease more focused.