公开(公告)号：US3824399A

公开(公告)日：1974-07-16

申请号：US37679673

申请日：1973-07-05

Applicant: SAAB SCANIA AB

Inventor： BJORK L ,  ERIKSON U

IPC: A61B6/00 ,  G01N23/04 ,  H05G1/64 ,  G01T1/16

CPC classification number: A61B6/481 ,  A61B6/504 ,  A61B6/507 ,  G01N23/043 ,  H05G1/64

Abstract: A known quantity of X-ray-opaque tracer is injected into blood entering an organ to be examined. X-rays are passed through the organ to an imaging plane. Image records are made periodically through a cycle of the organ. Selectively delineated image areas of each record of interest are scanned to produce a signal corresponding to blackness variations across the image. The signal is so amplified as to produce an output that varies with tracer concentration across the projected area of the organ. Integrating that output for each record provides a final output representative of tracer concentration in the delineated organ portion.

Abstract translation: 将已知量的X射线不透明示踪剂注入进​​入被检查器官的血液中。 X射线穿过器官进入成像平面。 通过器官的周期定期进行图像记录。 扫描每个感兴趣的记录的选择性描绘的图像区域以产生对应于跨越图像的黑度变化的信号。 该信号被如此放大以产生随着器官的投影区域上的示踪剂浓度而变化的输出。 将每个记录的输出整合提供代表描绘器官部分中示踪剂浓度的最终输出。