In this paper we present a modified algorithm of CT-Based attenuation correction for PET/CT Scanners in the presence of contrast agent,which can lead to unbiased result for the estimation of emission activity in these cases.
PET/CT扫描一般直接将CT透射扫描数据用于PET发射扫描的衰减校正,但是在有口服造影剂使用的场合,常规的衰减校正算法对PET扫描结果会带来约20%的正偏差。
The CT option can make attenuation correction to SPECT image or coincidence PET image, which makes the image of nuclear medicine closer to the real situation of distribution of radioactive nuclide in patients.
该CT能完成对SPECT图像或符合线路PET图像的衰减校正,使核医学图像能更接近的反映核素在人体内的真实分布情况。
Some new advances of research and clinical study on PET/CT were summarized briefly,including the choice of crystals,development of CT,radiotherapy plan,attenuation correction with CT,respiratory motion and CT contrast induced artifacts.
本文简要介绍PET/CT有关的几个技术问题和临床应用方面的新进展,如晶体的选择、CT技术进展、放射治疗、衰减校正、呼吸运动及CT造影剂的影响等。
Study on improving image quality with transmission attenuation correction;
穿透衰减校正改善成像质量的研究
Application of mountain return PIA to the attenuation correction of 3-cm weather radar data;
山回波的PIA因子在3cm雷达波衰减订正中的应用
With the KZS algorithm the wavelet attenuation correction of the X-band weather radar is realized by using the ground-clutter echo as the criterion.
用KZS算法(地物回波)做标准来实现X波段气象雷达回波的微波衰减订正。
It is corrected that attenuation correction techniques in heavy and big-scale moderate rainfall events,and the comparison analysis between gauge rainfall and estimation of radar rainfall before and after attenuation.
利用昆明多普勒天气雷达资料,采用迭代订正方法对强降水和大范围中等强度降水引起雷达信号的衰减情形进行了订正研究,同时对比分析了衰减订正前后的雷达测量降水与自动雨量站逐小时累计的雨量资料。
Attenuation of SPECT/PET and Application in Differentiation of TCM;
SPECT/PET衰减校正的实验研究及在临床中的应用
Artifacts in CT-based Attenuation Correction Myocardial Perfusion SPECT:A Preliminary Study
心肌灌注显像CT衰减校正伪影产生的初步研究
calibrating set for resistance attenuator
电阻衰减器校正装置
Beam Hardening Correction Algorithm Based on Material Attenuation in Computed Tomography
基于材料衰减特性的CT硬化校正算法
The Verification for the Ultrasonic Attenuation Estimation in Vivo Using the DRC Method
差比校正法体内声衰减测试的临床验证
Application of Correction Technique by Autoregressive Model with Memory Attenuated RLS Algorithm on Flood Forecasting of a River Network
河网洪水预报的衰减二乘自回归校正应用
Beam Attenuation Grid-based Scatter Correction Method for Cone Beam CT
基于射束衰减网格的锥束CT散射校正方法
pair attenuation coefficient
正负电子对衰减系数
Available with color-correcting and signal-attenuating accessories for user-controlled manipulation of light source output.
有颜色校正器和信号衰减附件，用于使用者控制操作光源输出。
The nonlinear wave shape degenerates to a sinusoidal wave.
非线性波形衰减成正弦波。
Revise for fourier transform of exponential decay signal
指数衰减信号的Fourier变换修正
Analysis on an exponential attenuation factor in the modified Friedlander equation by overpressure tests
修正的Friedlander方程指数衰减因子
Automatic Testing System of Attenuator Based on Visual Basic 6.0
基于Visual Basic 6.0的衰减器自动校准系统
Automatic Calibration of Large Attenuation Based on Visual Basic 6.0
基于Visual Basic 6.0的大衰减量的自动校准
attenuation compensator
衰减均衡器衰减补偿器
A Study on the Algorithms for Making Attenuation Correction to Observations of Weather Radar Reflectivity Factor and Their Applications;
天气雷达回波衰减订正算法的研究及其应用
Study on Attenuation Rule of Velocity Wave Based on Orthogonal Experimental Method
基于正交试验方法的速度波衰减规律研究
Attenuation Correction of Reflectivity for X-Band Dual Polarization Radar
X波段双线极化雷达反射率的衰减订正