基于OpenGL ES的移动端DICOM图像三维重建技术

OpenGL ES-based three-dimensional reconstruction of DICOM image on mobile device

二维CT图像虽然能够反映断层内的具体信息,但无法直观反映各断层之间相互关联的情况。对CT图像进行三维重建能够直观反映目标大小、位置等空间结构,便于医生更好地进行判断。CT图像的三维重建在移动医疗终端设备上还没有得到很好的实施。本研究利用面绘制实现在移动端对DICOM序列图像的直接三维重建,并对实时显示中断痕进行了优化,无需对图像进行轮廓提取,因此医生不必限制在物理室电脑上才能进行计划的制定及修改,从而大大节省了医生的时间。结果表明基于OpenGL ES的图像三维重建可在iPad等移动端流畅运行,所显示的三维对源数据无任何损失,并可对三维重建进行任意角度旋转。

Two-dimensional CT image can reflect the information of layers, but is unable to directly reflect the correlation between layers. The three-dimensional（3 D） reconstruction of CT image can reveal the spatial information（such as target size and location）, which can help doctors diagnose. However, 3 D reconstruction of CT image has not been well applied on mobile medical terminal devices. Our research realizes the direct 3 D reconstruction of DICOM images on mobile terminals with the use of surface rendering, and the image partition in real-time display is optimized, with no need to perform contour extraction for images, which will save doctor＇s time for he doesn＇t have to design and modify plan on personal computer at the Department of Physics. The results show that OpenGL ES-based 3 D reconstruction runs smoothly on mobile devices such as i Pad, without the loss of source data in all the 3 dimensions, and that the 3 D reconstructed image can be rotated at any desired angle.