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A normal physiological condition such as “patent” (meaning open) “antegrade flow” (meaning flowing forward) of the vertebral arteries” is not dangerous., rather it is totally appropriate.
If a carotid artery is patent, it means that the blood vessel remains open and unobstructed, allowing normal blood flow through it. A healthy, functioning carotid artery is crucial for supplying oxygen-rich blood to the brain. Blockages in this artery can lead to serious health complications such as stroke.
Vessels were graded in 1 of 3 ways: patent without stenosis; patent with stenosis; or occluded (Table II). A grade of patent without stenosis was given to any vessel displaying no or only minor disturbances in color-flow characteristics and no stenoses of ≥50%.
Your health care provider will perform a physical exam. Your provider may use a stethoscope to listen to the blood flow in your neck for an unusual sound called a bruit. This sound may be a sign of carotid artery disease. Your provider also may find clots in the blood vessels of your eye.
We defined antegrade flow as early opacification at the distal interface of the clot with subsequent distal extension on 4‐dimensional computed tomography angiography.
Pronounced with a long A a patent artery is one that is not completely blocked.
Ultrasound of the vertebral arteries can be variable in diameter. They should always demonstrate antegrade flow (toward the brain) and be low resistance similar to the ICA. Arrows indicate normal flow direction in the extra cerebrovascular circulation.
A normal physiological condition such as “patent” (meaning open) “antegrade flow” (meaning flowing forward) of the vertebral arteries” is not dangerous., rather it is totally appropriate.
The five primary requirements for patentability are: (1) patentable subject matter; (2) utility; (3) novelty; (4) non-obviousness; and (5) enablement. Like trademarks, patents are territorial, meaning they are enforceable in a specific geographic area.
Format of a Patent Application The Specification. The Title. The Description. The Claims. The Drawings. The Abstract. Sample Specifications. Minimum Requirements for a Filing Date.