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If the vein compresses, this confirms that the vein is open and patent. If the vein does not compress and debris is seen within the vein, this confirms the presence of a blood clot or obstruction of the vein accounting for the patient's symptoms.
Hepatopetal denotes flow of blood towards the liver, which is the normal direction of blood flow through the portal vein. The term is typically used when discussing the portal vein or recanalized vein of the ligamentum teres in patients with suspected portal hypertension. It is the opposite of hepatofugal.
Hepatofugal or non-forward portal flow (NFPF) is an abnormal flow pattern in which the portal venous flow is from the periphery of the liver towards the porta hepatis and backwards along the portal vein. This phenomenon is not uncommon in patients with liver disease 3.
Patent track sign is a finding on color Doppler ultrasound, representing blood traveling along the course a biopsy needle track. It can occur after a biopsy of any organ, but is more often seen after liver or kidney biopsies.
A normal portal venous flow is hepatopetal. A flow reversal (or a hepatofugal flow) is seen in the case of portal hypertension (Fig. 6).
As an inventor who wants to file a provisional patent application seeking patent protection for your invention, you have the following three main options: Option 1: Self-Draft. Option 2: Hire a Cheap Patent Service. Option 3: Hire a Quality Patent Attorney.
Utility patent application: may be filed by anyone who invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof.
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.
These five steps will help you plan out the patent process as you seek to protect your invention. Understand your invention. The first step in how to get a patent is to understand your invention. Research your invention. Choose the type of protection. Draft your patent application. Wait for a formal response.
No, the use of an attorney or registered agent is not required for filing a patent application. However, an attorney or registered agent is often a useful resource and the USPTO recommends the use of such for preparing a patent application and conducting the proceedings in the USPTO.