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Vein matching, also called vascular technology, [1] is a technique of biometric identification through the analysis of the patterns of blood vessels visible from the surface of the skin. [2]
Vascular corrosion casting requires the use of a solidifying material such as a resin. The most common resin used for vascular corrosion casting is Batson's 17. [2] The process begins with the draining of blood from vessels to prevent blockage from clotting, this can be achieved by perfusing blood vessels with a physiological fluid such as phosphate buffered saline. [3]
Digital subtraction angiography (DSA) is a fluoroscopy technique used in interventional radiology to clearly visualize blood vessels in a bony or dense soft tissue environment. Images are produced using contrast medium by subtracting a "pre-contrast image" or mask from subsequent images, once the contrast medium has been introduced into a ...
The Hess test or Rumpel-Leede test is a medical test used to assess capillary fragility. [1] It is also called the Tourniquet test . To perform the test, pressure is applied to the forearm with a blood pressure cuff inflated to between systolic and diastolic blood pressure for 10 minutes.
It was named for Edgar Van Nuys Allen, who described the original version of the test in 1942. [1] An altered test, first suggested by Irving S Wright in 1952, has almost universally replaced the original method in contemporary medical practice. The alternative method is often referred to as the modified Allen's test or modified Allen test. [2]
For all structures except the heart, the images are usually taken using a technique called digital subtraction angiography or DSA. Images in this case are usually taken at 2–3 frames per second, which allows the interventional radiologist to evaluate the flow of the blood through a vessel or vessels. This technique "subtracts" the bones and ...
The cardiovascular examination is a portion of the physical examination that involves evaluation of the cardiovascular system. The exact contents of the examination will vary depending on the presenting complaint but a complete examination will involve the heart (cardiac examination), lungs (pulmonary examination), belly (abdominal examination) and the blood vessels (peripheral vascular ...
In other levels of care, pulse oximetry plus transcutaneous carbon-dioxide measurement is a less invasive, alternative method of obtaining similar information. [citation needed] An ABG test can indirectly measure the level of bicarbonate in the blood. The bicarbonate level is calculated using the Henderson-Hasselbalch equation.