Abstract:
The present invention relates to a cone beam computed tomography (CT) scanning device using single energy photon source and a method for acquiring images using the same. According to the present invention, an object is positioned between multiple optical sources and image detecting parts facing each other and the present invention relates to an image acquiring method using a cone beam CT scanning device photographing the object by rotating the multiple optical sources and image detecting parts. Moreover the present invention comprises the step of selecting one optical source among multiple optical sources having single energy photon source and a different energy band; a step of performing cone beam CT scanning for the object by rotating the selected optical source with the object at the center; a step of measuring photon energy absorbed by each pixel included at the image detecting part of a 2D panel shape while performing the cone beam CT scanning; a step of calculating the number of photons corresponding to the energy band of the selected optical source before storing; and a step of generating 3D CT images using the stored photon number information for each pixel. According to the present invention, the influence of scattering can be efficiently eliminated by using images of the single photon source when generating a 3D CT image. [Reference numerals] (AA) Start;(BB) End;(S510) Selecting an optical source among multiple optical sources;(S520) Performing conbeam CT scanning for an object;(S530) Measuring photon energy absorbed by each pixel included in a 2D panel;(S540) Removing a photon energy spectrum part except for an energy band of the selected optical source;(S550) Calculating the number of photons corresponding to the energy band of the selected optical source;(S560) Generating 3D CT images using the stored photon number information for each pixel
Abstract:
본 발명은 플루오린-18의 표지방법에 관한 것으로, 보다 상세하게는 알킬 할라이드 또는 알킬 설포네이트와 [ 18 F]플루오라이드를 반응시켜 플루오린-18을 표지하는 방법에 있어서, 4차알킬암모늄 고분자 지지체에 지지되어 있는 [ 18 F]플루오라이드를 화학식 2 또는 금속염을 녹인 화학식 1의 알코올 용매로 용리하는 것을 특징으로 하는 플루오린-18의 표지방법에 관한 것이다. 본 발명은 용리시 알코올 용매를 사용하여 증발시 시간을 단축하거나 용리된 알코올 용매 자체를 반응 용매로 사용함으로써 증발과정을 생략하여 총 합성시간을 단축할 수 있으며, 4차암모늄고분자 지지체에 지지되어 있는 음이온을 약염기들로 대체함으로서 부반응을 줄이고 원하는 표지된 화합물을 고수율로 얻을 수 있어 플루오린-18이 표지된 유기플루오로-18 화합물의 대량생산에 유용하다. 유기플루오로-18 화합물, 알킬 할라이드, 알킬 설포네이트, 3차 알코올, 4차 암모늄염 고분자지지체, 4차 암모늄염, 인산 음이온, 플루오린-18 표지
Abstract:
The present invention relates to a complex comprising one or more radioisotopes selected from the group consisting of 99mTc, 188Re and 186Re chelated to a glucose derivative having an intramolecular nitrogen or sulfur atom, which is very useful as tumor diagnostic agents. It also relates to a kit for the preparation thereof comprising the glucose derivative and a reducing agent.