CIRS聲波測試模體 062MQA 簡介
062MQA的設(shè)計目的是提供一種工具，用于集成在放射治療設(shè)備中的錐形束系統(tǒng)的電子密度校準和圖像質(zhì)量評估。體模的電子校準功能增強了自適應(yīng)放射治療的效果，而圖像質(zhì)量特征處理了優(yōu)化圖像質(zhì)量和化輻射劑量之間的微妙平衡。062年mqa CB電子密度與圖像質(zhì)量幻影包括幾個部分:100毫米厚的板,厚100毫米CB圖像質(zhì)量幽靈,一個50毫米厚電子密度幻影,和丸組成的37.5毫米厚均勻板,12.5毫米厚均勻板和一個50毫米厚均勻板。100毫米厚的身體部分有一個中心孔，接收CB圖像質(zhì)量幻影。每個Bolus平板上都鉆了孔，以容納離子室物，并允許離子室測量，而不管物的成像質(zhì)量如何。選擇切片的厚度是為了在光束的中軸上定位包含圖像質(zhì)量特征的任何層。不同厚度的截面減小了電子密度截面與中心軸的偏移增量。幻影支持連同激光對準標志，使輕松和快速定位的幻影上的加速器沙發(fā)。幻影是放置在支持軌道的幫助下加工凹槽。緩沖板用于減少來自支持設(shè)備的工件，并允許用戶訪問支持板上的手柄。支撐的調(diào)平和隱含的幻影是通過調(diào)整調(diào)平腳來實現(xiàn)的。
CIRS聲波測試模體 062MQA
美國CIRS 062MQA聲測試模體的特點:
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聲波測試模體 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聲波測試模體 
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.
