CIRS声波测试模体 062MQA  简介

062MQA的设计目的是提供一种工具，用于集成在放射治疗设备中的锥形束系统的电子密度校准和图像质量评估。体模的电子校准功能增强了自适应放射治疗的效果，而图像质量特征处理了优化图像质量和化辐射剂量之间的微妙平衡。062年mqa CB电子密度与图像质量幻影包括几个部分:100毫米厚的板,厚100毫米CB图像质量幽灵,一个50毫米厚电子密度幻影,和丸组成的37.5毫米厚均匀板,12.5毫米厚均匀板和一个50毫米厚均匀板。100毫米厚的身体部分有一个中心孔，接收CB图像质量幻影。每个Bolus平板上都钻了孔，以容纳离子室物，并允许离子室测量，而不管物的成像质量如何。选择切片的厚度是为了在光束的中轴上定位包含图像质量特征的任何层。不同厚度的截面减小了电子密度截面与中心轴的偏移增量。幻影支持连同激光对准标志，使轻松和快速定位的幻影上的加速器沙发。幻影是放置在支持轨道的帮助下加工凹槽。缓冲板用于减少来自支持设备的工件，并允许用户访问支持板上的手柄。支撑的调平和隐含的幻影是通过调整调平脚来实现的。

CIRS声波测试模体 062MQA 

美国CIRS 062MQA声测试模体的特点:

• Perform all Image QA tests for AAPM TG Report #1

• Use ionization chambers for dose measurements

• Perform dose measurements using Ion chamber

• Calibrate Eleron Density in multi-slice and Cone Beam

• Perform central axis and off-set measurements

• Position simulated tissue materials in & CB energy range at 17 different locations

• Optimized for volumetric imaging

• Quick positioning and customized loading configurations

CIRS声波测试模体  062MQA 

The One Tool Solution for Eleron Density Calibration & Image Quality Assesent

 CB Image Quality Phantom

The Phantom is comprised of four layers: spatial resolution, number linearity/slice thickness, low contrast and uniformity. The positioning of the different layers of the CB Image Quality phantom at the central axis can be done with the phantom in the 100mm body seion or with the phantom placed direly on the support device. 

CIRS声波测试模体 Spatial Resolution Layer

The Spatial Resolution Layer is designed to evaluate the spatial resolution of IGRT systems. Line pair patterns from 1 lp/cm to 16 lp/cm are embedded in the background. In order to minimize artifas, each line pair pattern is made from a material with 350HU greater than the background attenuation. The line pair patterns are 3D patterns 12mm in height along the lonudinal axis of the CB Image Quality Phantom. The spatial resolution targets are arranged in a circular pattern.