Sørensen Mads S, Dobrzeniecki Andy B, Larsen Per, Frisch Thomas, Sporring Jon, Darvann Tron A
Department of Otolaryngology, Head and Neck Surgery, Rigshospitalet, Denmark.
ORL J Otorhinolaryngol Relat Spec. 2002 Nov-Dec;64(6):378-81. doi: 10.1159/000066089.
High-fidelity computer-based modeling, simulation and visualization systems for the study of temporal bone anatomy and training for middle ear surgery are based on a sequence of digital anatomical images, which must cover a large tissue volume and yet display details in high resolution and with high fidelity. However, the use of existing image libraries by independent developers of virtual models of the ear is limited by copyright protection and low image resolution. A fresh frozen human temporal bone was CT-scanned and serially sectioned at 25 microm and digital images of the block surface were recorded at 50- to 100-microm increments with a Light Phase(TM) single-shot camera back attachment. A total of 605 images were recorded in 24-bit RGB resolution. After color correction and elimination of image size variation by differential cropping to 15.4 cm x 9.7 cm, all images were resampled to 3,078 x 1,942 pixels at a final resolution of 50 microm/pixel and stored as 605 one-Mb JPEG files together with a three-dimensional viewer. The resulting complete set of image data provides: (1) a source material suitable for generating computer models of the human ear; (2) a resource of high-quality digital images of anatomical cross sections from the human ear, and (3) a PC-based viewer of the temporal bone in three perpendicular planes of section.
用于颞骨解剖学研究和中耳手术训练的高保真计算机建模、模拟及可视化系统基于一系列数字解剖图像，这些图像必须覆盖较大的组织体积，同时以高分辨率和高保真度显示细节。然而，耳朵虚拟模型的独立开发者对现有图像库的使用受到版权保护和低图像分辨率的限制。对一块新鲜冷冻的人类颞骨进行CT扫描，并以25微米的厚度连续切片，使用Light Phase(TM)单次拍摄相机背附件以50至100微米的增量记录块表面的数字图像。总共以24位RGB分辨率记录了605张图像。在进行色彩校正并通过差分裁剪将图像尺寸变化消除至15.4厘米×9.7厘米后，所有图像以50微米/像素的最终分辨率重采样至3078×1942像素，并与一个三维查看器一起存储为605个1兆字节的JPEG文件。所得的完整图像数据集提供了：(1) 适合生成人类耳朵计算机模型的源材料；(2) 来自人类耳朵的高质量解剖横截面数字图像资源；以及(3) 基于个人计算机的颞骨在三个垂直截面平面上的查看器。
