Serially Sectioned Images of the Whole Body (Seventh Report: Segmentation of Lower Limb's Structures in Detail) / 대한해부학회지

Whole body of a Korean male cadaver was serially sectioned to make anatomical images. Structures in the anatomical images should be segmented to make three-dimensional images of the structures. Purpose of this research is to prepare the segmented images of lower limb in detail, which are distributed to help other investigators make 3D images and virtual dissection software of lower limb. One-hundred fourteen structures (a skin, 32 bones, 7 knee joint structures, 60 muscles, 7 arteries, 7 nerves) of left lower limb were decided to segment in 976 temporary segmented images (PSD file, intervals 1.0 mm, resolution 1,200 x 1,100) including anatomical images. On the Adobe Photoshop, selections which fit the structures' contours were drawn automatically, semiautomatically, or manually; subsequently, the selections were put into the layers. After filling the selections with colors, the temporary segmented images were converted to 996 segmented images (TIFF files). The segmented images were staked to make coronal and sagittal segmented images for verifying segmentation. The corresponding segmented and anatomical images can be used to make three-dimensional images of the 114 structures and virtual dissection software, which are helpful in anatomy study of lower limb. The segmentation techniques of this research can be used to segment many structures in other images quickly and correctly.

Manufacture of the Serially Sectioned Images of the Whole Body (Fifth Report: Methods for Manufacture of the Three Dimensional Images and Virtual Dissection Software) / 대한해부학회지

To be helpful in medical education, anatomical images were made by serial sectioning of the Korean cadaver's whole body at 0.2 mm intervals. Successively, segmented images were made by outline drawing of thirteen anatomical structures on the anatomical images. First purpose of this research is to verify that anatomical and segmented images are correct by means of the virtual dissection of 3D (three dimensional) images, which are made of the anatomical and segmented images. Second purpose is to verify that the virtual dissection is helpful in studying anatomy. A 3D anatomical image and a 3D segmented image were made by stacking the anatomical and segmented images and subsequently by volume reconstructing after both intervals and pixel size of the anatomical and segmented images were reduced to be 1 mm. Virtual dissection software, on which the 3D anatomical and 3D segmented images could be sectioned at free angles, and the 3D anatomical images of the several anatomical structures could be selected to display referring to the 3D segmented image and could be rotated at the free angles, was made. As the result of this research, corresponding 3D anatomical and 3D segmented images (resolution 494x282x1,702) were prepared; and virtual dissection software, which could be conveniently operated on the personal computer, was prepared. On the virtual dissection software, stereoscopic shape and location of the anatomical structures were corresponding to anatomical knowledge, so that the anatomical and segmented images were verified to be correct. The virtual dissection software was verified to be helpful in studying stereoscopic shape and location of the anatomical structures. If the anatomical images, segmented images, 3D images, and virtual dissection software made in this research are distributed worldwide, they will help not only medical students and doctors study anatomy but also other researchers make better segmented images, 3D images, and virtual dissection software.