Scanner and image reconstruction method

• Main Authors: HAYES JOHN, HARPER BRENT, MCKEE, TIMOTHY, R
• Format: Patent
• Language: Chinese; English
• Published: 03.05.2024
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEDICAL OR VETERINARY SCIENCE; PHYSICS; SURGERY; TESTING

Techniques provided herein relate to dual energy CT scanners and associated image acquisition and reconstruction techniques that increase spatial and temporal resolution over conventional dual energy CT scanner designs. A dual energy filter at a source as disclosed herein includes alternating materials that attenuate the X-ray source to different levels, providing spectral separation. As such, an object to be imaged by the X-ray beam is detected by both the low energy spectrum and the high energy spectrum. An X-ray spectrum at a source is divided in a detector channel direction (column direction). 本文提供的技术涉及双能量CT扫描仪以及相关联的图像采集和重建技术，其优于常规双能量CT扫描仪设计增加了空间和时间分辨率。如本文公开的位于源处的双能量滤波器包括使X射线源衰减到不同水平的交替材料，从而提供谱分离。如此，通过低能谱和高能谱两者探测待通过X射线束成像的对象。沿检测器通道方向(列方向)划分源处的X射线谱。