Ultrasound Landmarks
Ultrasound Landmarks - Related Videos
05:22
Systematic Endobronchial Ultrasound - The Six Landmarks Approach
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Cited by 1 •
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.
10:53
A Novel Application of Musculoskeletal Ultrasound Imaging
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Cited by 14 •
2013
We describe a new ultrasound-based vector tissue Doppler imaging technique to measure muscle contraction velocity, strain and strain rate with sub-millisecond temporal resolution during dynamic activities. This approach provides complementary measurements of dynamic muscle function and could lead to a better understanding of mechanisms underlying musculoskeletal disorders.
04:47
Systematic Bronchoscopy: the Four Landmarks Approach
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Cited by 4 •
2023
Here, we present a protocol to navigate the bronchial maze in a structured manner, splitting the bronchoscopy into a stepwise approach-the four landmarks approach.
08:42
Using Point of Care Ultrasound to Augment Acquisition of Physical Exam Skills: Veins and Arteries
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2023
Source: Joseph H. Donroe, Rachel Liu; Yale School of Medicine, USA Vascular diseases make up most cases of emergency hospitalization and carry a high mortality risk. Point-of-care ultrasound or POCUS enables accurate diagnosis of these diseases and shortens the time between detection of the cause and selection of appropriate treatment strategies, thus, reducing the patient mortality rate. POCUS offers a safe, low-cost, and less invasive bedside tool for examining arteries and veins, besides its...
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.
FAQs
When sound waves encounter boundaries between tissues with different acoustic impedance, part of the sound energy returns as echoes. The ultrasound system displays these returning signals as patterns that correspond to structures or interfaces. Because each boundary can produce a different appearance, recognizing consistent echo patterns helps clinicians distinguish anatomical reference points during examination and interpretation.
Probe position and angle determine how sound reaches a structure and how returning echoes are represented on the screen. Imaging depth also changes the displayed relationship between superficial and deeper tissues. Consequently, a landmark may appear differently when the probe is repositioned or the depth is adjusted, so clinicians use these controls to maintain anatomical orientation.
Vessels, organs, bones, fascial planes, tissue boundaries, and other recognizable features provide complementary reference points. Considering their position and relationship rather than relying on one feature helps clinicians connect the two-dimensional image with three-dimensional anatomy. This approach supports more confident interpretation when normal structures and abnormal findings must be distinguished.
A consistent set of anatomical reference points establishes where structures should appear and how they relate to one another. Deviations in those expected relationships or in the displayed tissue patterns can prompt closer evaluation of a finding. Landmarks therefore support interpretation by providing anatomical context, rather than requiring clinicians to assess an isolated image feature.
A practical workflow begins by identifying recognizable reference structures, then refining the image through probe position, angle, and depth adjustments. Clinicians can use the resulting orientation to follow anatomy systematically and obtain measurements at relevant locations. Recording the relationships among landmarks helps connect sequential views and supports consistent interpretation across the examination.
Before or during an image-guided procedure, visible vessels, organs, bones, fascial planes, and tissue boundaries can serve as orientation points. Their relationships help clinicians identify the relevant anatomical region and guide accurate positioning or measurement. Using these references can make the procedure more anatomically informed while helping the operator interpret the displayed two-dimensional view.
They are useful whenever clinicians need anatomical orientation, accurate measurements, or interpretation of normal and abnormal findings. Their value extends across examinations involving vessels, organs, bones, fascial planes, and other tissue interfaces. By linking sonographic appearances to underlying anatomy, landmarks can improve diagnostic confidence and provide a structured basis for clinical assessment.