3D-DOCTOR is an advanced 3D modeling,  image processing and measurement software for MRI, CT, PET, microscopy, scientific, and industrial imaging applications. 

3D-DOCTOR supports both grayscale and color images stored in DICOM, TIFF, Interfile, GIF, JPEG, PNG, BMP, PGM, RAW or other image file formats. 3D-DOCTOR creates 3D surface models and volume rendering from 2D cross-section images in real time on your PC. 

You can export the polygonal mesh models to STL, DXF, IGES, 3DS, OBJ, VRML, XYZ and other formats for surgical planning, simulation, quantitative analysis and rapid prototyping applications. You can calculate 3D volume and make other 3D measurements for quantitative analysis. 3D-DOCTOR's vector-based tools support easy image data handling, measurement, and analysis.

3D CT/MRI images can be re-sliced easily along an arbitrary axis. Multi-modality images can be registered to create image fusions. Misaligned slices can be automatically or semi-automatically aligned using 3D-DOCTOR's image alignment functions. Other image processing functions include template-based film cropping, image reslicing to correct slices of uneven thickness, volume resizing, and image rotation.