A truly hybrid interventional MR/X‐ray system: Feasibility demonstration

A truly hybrid interventional MR/X‐ray system: Feasibility demonstration
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真正的混合介入 MR/X 射线系统:可行性演示

DOI:
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发表时间:
2001
影响因子:
4.4
通讯作者:
N. Pelc
N. Pelc
中科院分区:
医学2区
文献类型:
--
作者:
R. Fahrig;K. Butts;J. Rowlands;R. Saunders;J. Stanton;G. Stevens;B. Daniel;Z. Wen;D. Ergun;N. Pelc

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一个能够在一次检查中同时进行X射线透视和核磁共振检查,而不需要患者重新定位的系统,将是图像引导干预的强大工具。我们研究了开放式磁共振成像系统(GE Signa SP)中X射线图像采集的相关技术问题。该系统包括放置在患者床下的平板X射线探测器(GE Medical Systems)、头顶上的固定阳极X射线管(阳极轴与主磁场对齐)和高频X射线发生器(LUNAR Corp.)。研究的新挑战涉及:1)X射线管电子束的偏转和散焦;2)平板的正常功能;3)对B0场均匀度的影响;以及4)磁共振图像中额外的RF噪声。我们已经使用我们的混合系统在不重新定位对象的情况下获得了高质量的X射线和MR图像,这证明了这种新配置的可行性。还需要进一步的工作,以确保在MR和X光模式下都能获得尽可能高的图像质量。J·马根。雷森。《影像》2001;13:294-300。©2001 Wiley-Liss公司
A system enabling both x‐ray fluoroscopy and MRI in a single exam, without requiring patient repositioning, would be a powerful tool for image‐guided interventions. We studied the technical issues related to acquisition of x‐ray images inside an open MRI system (GE Signa SP). The system includes a flat‐panel x‐ray detector (GE Medical Systems) placed under the patient bed, a fixed‐anode x‐ray tube overhead with the anode‐cathode axis aligned with the main magnetic field and a high‐frequency x‐ray generator (Lunar Corp.). New challenges investigated related to: 1) deflection and defocusing of the electron beam of the x‐ray tube; 2) proper functioning of the flat panel; 3) effects on B0 field homogeneity; and 4) additional RF noise in the MR images. We have acquired high‐quality x‐ray and MR images without repositioning the object using our hybrid system, which demonstrates the feasibility of this new configuration. Further work is required to ensure that the highest possible image quality is achieved with both MR and x‐ray modalities. J. Magn. Reson. Imaging 2001;13:294–300. © 2001 Wiley‐Liss, Inc.
对用于荧光镜和射线照相操作的高分辨率、间接检测、有源矩阵平板成像仪 (AMFPI) 的信号性能进行实证研究。
DOI: 10.1118/1.597918
发表时间: 1997
期刊: Medical physics
影响因子: 3.8
作者:
Antonuk,LE;El-Mohri,Y;Siewerdsen,JH;Yorkston,J;Huang,W;Scarpine,VE;Street,RA
通讯作者: Street,RA
DOI: 10.1118/1.597919
发表时间: 1997-01-01
期刊: MEDICAL PHYSICS
影响因子: 3.8
作者:
Siewerdsen, JH;Antonuk, LE;Cunningham, IA
通讯作者: Cunningham, IA