Probe Placement Technique
Probe Placement Technique - Related Videos
06:57
Arterial Line Placement
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2023
Source: Sharon Bord, MD, Department of Emergency Medicine, The Johns Hopkins University School of Medicine, Maryland, USA When monitoring patients, it is important to obtain values that are accurate and reliable. Blood pressure monitoring is one of the essential vital signs, and for a majority of patients, measuring it utilizing non-invasive techniques provides accurate values. However, there are situations in which the blood pressure requires more exact, specific, and reliable measurements.
09:47
A Microfluidic Technique to Probe Cell Deformability
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Cited by 20 •
2014
We demonstrate a microfluidics-based assay to measure the timescale for cells to transit through a sequence of micron-scale constrictions.
09:51
Intraosseous Needle Placement
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2023
Source: Julianna Jung, MD, FACEP, Associate Professor of Emergency Medicine, The Johns Hopkins University School of Medicine, Maryland, USA For unstable patients requiring urgent administration of medications, fluids, or blood products, establishing vascular access quickly is essential. However, there are many factors that can complicate placement of a peripheral intravenous cannula (PIV), and it is extremely common for PIV attempts to fail. PIV placement may be technically challenging in small...
06:31
Probe-based Confocal Laser Endomicroscopy of the Urinary Tract: The Technique
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Cited by 25 •
2013
Probe-based confocal laser endomicroscopy enables real-time microscopy of the human urinary tract during cystoscopy, providing dynamic, intravital imaging of pathological states such as bladder cancer with cellular resolution. Endomicroscopy may augment the diagnostic accuracy of standard white light endoscopy and provide intraoperative image guidance to improve surgical resection.
03:02
Intrathecal Placement of Lumbar Drain: A Technique to Withdraw Cerebrospinal Fluid from the Lumbar Spine in Porcine Model
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2025
This video describes the technique of intrathecal placement of a lumbar drain in a porcine ischemic model, which helps in draining the cerebrospinal fluid to a drainage system. The cerebrospinal fluid pressure is monitored by the drainage system, and fluid is drained to maintain a constant cerebrospinal fluid pressure.
FAQs
Alignment determines whether the probe is directed toward the intended anatomy, while orientation influences how effectively the device detects the relevant signal or forms an image. Even when the probe contacts the correct region, an unfavorable angle can reduce usable information or introduce artifacts. Adjusting direction and orientation helps clinicians obtain findings that more accurately represent the target.
Contact pressure and coupling influence how consistently information passes between the probe and the body. Insufficient contact may weaken detection, whereas excessive pressure can cause discomfort or alter the measurement conditions. Appropriate coupling helps limit artifacts and supports clearer, more reliable signals or images, making pressure control an important part of repeatable clinical assessment.
Insertion depth must correspond to the intended measurement or imaging target. If the probe does not reach the appropriate position, the device may detect incomplete or less relevant information; excessive depth can increase discomfort and affect the examination. Controlling depth therefore supports accurate targeting while helping clinicians balance information quality with patient tolerance.
Standardized placement reduces variation in alignment, orientation, pressure, contact, and depth between operators. This consistency improves reproducibility, meaning repeated examinations are more likely to produce comparable findings. It also helps clinicians distinguish genuine physiological or anatomical differences from changes caused by technique, strengthening interpretation and supporting more dependable clinical decisions.
A practical workflow begins by identifying the target anatomy, then positioning the probe with suitable alignment and orientation. The clinician maintains appropriate contact or insertion depth and adjusts pressure and coupling to improve signal or image quality. Reviewing the result for artifacts or discomfort allows technique-related problems to be corrected before interpreting the finding.
Accurate placement supports several clinical tasks, including diagnostic imaging, physiological monitoring, and image-guided procedures. In each setting, positioning affects whether the device captures information from the intended anatomy or physiological source. Reliable technique can reduce measurement error and artifacts, while standardized positioning helps clinicians compare findings across examinations and make better-informed decisions.