NANO FOCUS RAY CO., LTD.; LTD.;NANO FOCUS RAY CO.;주식회사 나노포커스레이
发明人:
KIM, KYONG WOO,김경우,LEE, HEE SIN,이희신,KIM, KYONG WOOKR,LEE, HEE SINKR
申请号：
KR1020120120007
公开号：
KR1020140053731A
申请日:
2012.10.26
申请国别(地区):
KR
年份:
2014
代理人:
摘要：
Disclosed is a method for acquiring a high-quality image of a computed tomography scanner. The present invention provides a method for acquiring a high-quality image of a computed tomography scanner including an X-ray irradiator and an ax-ray detector which are fixed in opposition to each other to a gantry rotated by a gantry motor and the method includes the steps of: setting the number of rotations of the gantry by the computed tomography scanner； continuously rotating the gantry in a predetermined number of rotations； sequentially acquiring a plurality of tomographic images by the X-ray detector in a predetermined angular positions regardless of bio signal of a subject during the rotation of the gantry； finishing the scanning operation as the number of rotations of the gantry reaches a predetermined number of rotations and classifying the tomographic images into a plurality of image groups based on the scanning angle； calculating an optimum value for pixels having the same position in the plural tomography images included in the classified image groups； generating optimal images for each angle corresponding to each image group by combining the pixels having the calculated optimum values； and forming a 3D tomographic image by using the optimal images obtained based on the plural angles. Thus, a device for detecting the bio signal is not necessary, so the manufacturing cost for the computed tomography scanner can be reduced. Since the plural pixels of the tomographic image have the optical values, respectively, the high-quality image having to the motion artifact can be obtained.전산화 단층 촬영장치의 고화질 영상 획득 방법을 공개한다. 본 발명은 갠트리 모터에 의해 회전되는 갠트리에 서로 마주보게 고정되어 단층 영상을 촬영하는 X-선 조사기와 X-선 검출기를 구비하는 전산화 단층 촬영장치의 고화질 영상 획득 방법에 있어서, 전산화 단층 촬영 장치가 갠트리의 회전수를 설정하는 단계, 겐트리가 설정된 회전수로 연속적으로 회전하는 단계, 겐트리가 회전하는 동안 피사체의 생체 신호에 무관하게 기설정된 복수개의 각도에서 X-선 검출기에 의해 복수개의 단층 영상을 순차적으로 획득하는 단계, 겐트리의 회전이 설정된 회전수에 도달하면 촬영을 종료하고, 획득된 복수개의 단층 영상 각각을 촬영된 각도에 따라 복수개의 각도별 영상 그룹으로 분류하는 단계, 분류된 복수개의 각도별 영상 그
