The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B5. Beijing 2008 
797 
coordinates of these points were found. The retrieved 
coordinates were evaluated in CAD software to find the image 
of the bone model, illustrated in Figure 6. 
1 
enhance diagnosis process of the medical doctors, which will 
enable them to use their experience, knowledge and skills better 
and faster. In addition to help the diagnosis process, the 
approach and designed system of producing 3D images can also 
be used in many other medical areas. 
1 
( _____ «1 
REFERENCES 
I 
Birgin G., 2007. Evaluating and 3D Modeling of Radiograph, 
M.S. Thesis, I.T.U. Institute of Science and Technology, 
Istanbul (in Turkish). 
1 
Figure 6. 2D drawing of obtained data in CAD 
The X, Y, Z coordinates of the randomly chosen twenty control 
Ege, A., Seker, D.Z., Tuncay, I., Duran, Z., 2004, A 
Photogrammetric Analysis of the Distal Radius Articular 
Surface, The Journal of International Medical Research, 32, 
406-410. 
points and Xh, Yh, Zh values of the object were computed by 
DLT method in order to find the correction values. The root 
mean square for X, Y, Z coordinates, being mx, my, mz , was 
computed, where the positional accuracy was mp=0.472cm. 
The achieved point accuracy is adequate according to the 
Everine B. van de Kraats, Graeme P. Penney, Dejan Tomazevic, 
Theo van Walsum, Wiro J. Niessen., 2005, Standardized 
Evaluation Methodology for 2D - 3D Registration, IEEE 
Transactions on Medical Imaging, 24 
literature. Factors affecting this accuracy level can be listed as: 
the structure of the radiograph, precision of the 3D Printer that 
produced the designed mold, errors stemmed from pixel size 
due to scanning process with 300dpi. Proposals such as; to scan 
images at high resolution, to use digital roentgen films and to 
Goktepe A., 2004, A Study about Experimental Biomechanics 
Applications Evaluating by Digital Photogrammetric Method , 
Ph. D. Thesis, S.U. Institute of Science and Technology, Konya 
(in Turkish). 
produce the designed mold at high precision can be used in 
order to increase accuracy achieved from the study. 
3. CONCLUSION 
Malian A., Azizi A., van den Heuvel F.A., 2004, 
Development of a Robust Photogrammetric Metrology System 
for Monitoring the Healing of Bedsores, The Photogrammetric 
Record, 20, 241-273 
The obtained results indicate the success of the 
photogrammetric methods on producing 3D models. 
Visualization of the 3D model is the main advantage of the 
followed method. 3D images produced with this system will 
Toz G., 1987. Comparing DLT and Bundle Method in 
Photogrammetric Point Determining Problem, ITU Journal - 
ITU Oress, 45, 34-38 (in Turkish).