Rube Martin A, Holbrook Andrew B, Cox Benjamin F, Buciuc Razvan, Melzer Andreas
Division of Imaging and Technology, Institute for Medical Science and Technology, University of Dundee, Wilson House, 1 Wurzburg Loan, Dundee, DD2 1FD, UK,
Int J Comput Assist Radiol Surg. 2015 May;10(5):665-76. doi: 10.1007/s11548-014-1109-6. Epub 2014 Sep 2.
A wireless interactive display and control device combined with a platform-independent web-based user interface (UI) was developed to improve the workflow for interventional magnetic resonance imaging (iMRI).
The iMRI-UI enables image acquisition of up to three independent slices using various pulse sequences with different contrast weighting. Pulse sequence, scan geometry and related parameters can be changed on the fly via the iMRI-UI using a tablet computer for improved lesion detection and interventional device targeting. The iMRI-UI was validated for core biopsies with a liver phantom ([Formula: see text] [Formula: see text] 40) and Thiel soft-embalmed human cadavers ([Formula: see text] [Formula: see text] 24) in a clinical 1.5T MRI scanner.
The iMRI-UI components and setup were tested and found conditionally MRI-safe to use according to current ASTM standards. Despite minor temporary touch screen interference at a close distance to the bore ([Formula: see text]20 cm), no other issues regarding quality or imaging artefacts were observed. The 3D root-mean-square distance error was [Formula: see text] (phantom)/[Formula: see text] mm (cadaver), and overall procedure times ranged between 12 and 22 (phantom)/20 and 55 min (cadaver).
The wireless iMRI-UI control setup enabled fast and accurate interventional biopsy needle placements along complex trajectories and improved the workflow for percutaneous interventions under MRI guidance in a preclinical trial.
开发一种结合独立于平台的基于网络的用户界面（UI）的无线交互式显示和控制设备，以改善介入磁共振成像（iMRI）的工作流程。
iMRI-UI能够使用具有不同对比权重的各种脉冲序列采集多达三个独立切片的图像。可以通过iMRI-UI使用平板电脑即时更改脉冲序列、扫描几何形状和相关参数，以改善病变检测和介入设备靶向。iMRI-UI在临床1.5T MRI扫描仪中，使用肝脏模型（n = 40）和蒂尔氏软防腐人体尸体（n = 24）对核心活检进行了验证。
根据当前ASTM标准，对iMRI-UI组件和设置进行了测试，发现其在有条件的情况下使用是MRI安全的。尽管在靠近孔（<20 cm）的近距离处存在轻微的临时触摸屏干扰，但未观察到其他关于质量或成像伪影的问题。三维均方根距离误差为0.9（模型）/1.1 mm（尸体），总体操作时间在12至22（模型）/20至55分钟（尸体）之间。
在一项临床前试验中，无线iMRI-UI控制设置能够沿着复杂轨迹快速准确地放置介入活检针，并改善了MRI引导下经皮介入的工作流程。
