| Volume rendering of medical data makes resample and reconstruction with the medical rule data sets using modern computing image processing technology and displays2D, quasi-3D and3D images on a computer monitor, which is an effective means for a doctor to find out internal information of a patient. Visualization technology has always been one of the central issues in computer research and played a very important role in virtualization field.The topic in this paper can be classified into the intersection field between computer and medicine. With the development of computer hardware and software technology, hardware calculation has been continually upgraded in accordance with the rate in Morgan’s law(The number of transistors contained on IC will double about every18months, as well as the capability will also double, while the price will not change.) The CPU in a common PC nowadays has developed to dual even quad core processors, and the memory has increased to over4GB. The task originally only completed by a graphics workstation can be moved to a common computer. Meanwhile, the progress of computer software has grown toward development convenience. All of the above mentioned provides not only good facilities to achieve real-time interactive3D image reconstruction system, but also provides the basis for the more complex image reconstruction based on depth infonnation raised in this paper.This paper first systematically reviewed the development of medical image3D reconstruction progress home and abroad, and then proposed a3D image reconstruction based on depth information and3D segmentation model. It also developed a completed medical image processing system with good human-computer interaction, which consists of perfect2D slice image processing subsystem, quasi-3D image processing subsystem, and3D image reconstruction subsystem (including3D surface rendering,3D volume rendering, and3D segmentation). Excellent human-computer interaction technology allows a doctor the good and real-time operation with all the images with only mouse and keyboard, which provides doctors intuitive and convenient visual information of preoperative diagnosis.We innovated in three aspects here. First, we made full use of the advantages of PC computer hardware technology to add depth information into the traditional volume rendering method, and sampled and reconstructed according to the depth information. Which allows doctors to constantly adjust depth values with mouse, and "poke" image layer by layer, until observe the internal hidden organization. Second, excellent human-computer interaction design which penetrates into the interactive display of2D, quasi-3D, and3D images allows doctors to adjust all of the above images with only mouse (e.g. zoom, rotate, move, etc.). It also allows doctors to finish the operations such as adjusting window width and window level of the image, access to image coordinates and gray value, and measurement of the length and angle, etc. Third, the completed medical imaging system developed can meet the needs of clinician’s diagnosis from all aspects such as the input, display, reconstruction, manipulation and output of medical image in DICOM format. |
