Assistant device for head and neck subtraction CT imaging test

Abstract

An auxiliary apparatus for head and neck substraction CT imaging examination characterized in that it includes a back plate having a head side fixing mechanism formed from a pair of arc plate in correspondent position of the front part, two adjustment seats having holes are arranged on external side of each arc plate in the back plate, inside of the holes adjustment mechanisms are provided for controlling the arc plates to move oppositely, the adjustment mechanisms are adjustment columns penetrating the holes and forming a screw connection therewith. The invention can define and fix the head and neck accurately, thus ensuring a same space position in groups both before and after injecting the contrast under the same scanning conditions, so a complete and clear substracted CT vascular image with reinforced vascular image can be obtained after eliminating the interference caused by the bone and soft tissues by processing of computer substraction software and a complete observation both inside and outside the vessel cavity may be obtained.

Description

technical field [0001] The invention relates to an auxiliary device for medical examination equipment using imaging, in particular to an auxiliary device for head and neck subtraction CT imaging examination. Background technique [0002] With the rapid development of computer technology, medical imaging has increasingly become an important discipline that promotes the progress of medical science and clinical medicine. In the 1950s, Serdinger pioneered intravascular catheter angiography to display vascular structures and diagnose vascular lesions. Due to the overlapping of blood vessels with bones and soft tissues, the display of blood vessels was affected. Digital Subtraction Angiography (DSA) uses computer processing digital Image information eliminates bone and soft tissue images, making blood vessels more clear, making angiography widely used clinically and becoming the gold standard for diagnosing vascular lesions. However, it is difficult to display all the blood vesse...

AI Technical Summary

Problems solved by technology

This overcomes the disadvantage that the three-dimensional DSA technology can only clearly display the structure of the vascular lumen, but not the shape outside the blood vessel. However, in addition to displaying blood vessels, CT angiography can also clearly display bone and soft tissue structures, which seriously interferes CT angiography makes it impossible to display tiny vascular lesions (<2mm), and it is difficult to observe vascular lesions adjacent to the bone, which may easily lead to missed diagnosis of vascular lesions

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