3D-DOCTOR is a sophisticated software solution designed for 3D modeling, image processing, and measurement, tailored for applications in MRI, CT, PET, microscopy, and both scientific and industrial imaging. It accommodates a variety of image formats including DICOM, TIFF, Interfile, GIF, JPEG, PNG, BMP, PGM, MRC, RAW, and more, whether they are grayscale or color images. The software enables the creation of intricate 3D surface models and real-time volume rendering from 2D cross-sectional images directly on your computer. You have the ability to export these polygonal mesh models into formats such as STL, DXF, IGES, 3DS, OBJ, VRML, PLY, and XYZ, which can be utilized for surgical planning, simulations, quantitative analyses, finite element analyses, and rapid prototyping endeavors. Additionally, 3D-DOCTOR facilitates the calculation of 3D volumes and various measurements essential for quantitative research. Its vector-based tools enhance the ease of handling image data, performing measurements, and conducting analyses. The software also allows for the re-slicing of 3D CT/MRI images along any desired axis, with the capability to register multi-modality images, thereby enabling comprehensive image fusions that can lead to enhanced diagnostic insights. Overall, 3D-DOCTOR is an invaluable tool for professionals seeking precision and efficiency in 3D imaging and analysis.