Three-dimensional color maps: a novel tool for assessing craniofacial changes.
BACKGROUND
Three-dimensional (3D) color maps are useful for analyzing data acquired by laser scanning, stereophotography, or computed tomography (CT). The authors aim to illustrate the different applications of color maps in the craniomaxillofacial region.


METHODS
The images obtained from the above techniques at 2 different time points are superimposed based on a common area unaffected by the surgical intervention or growth. Using specialized software, the distance differences between the 2 superimposed images are depicted in a graphical format as a 3D color map. A color-coded scale indicating the distances accompanies these maps.


RESULTS
3D color maps can be manipulated and viewed in a variety of angles to extract the maximum diagnostic information. They facilitate the critical evaluation of facial asymmetry, accuracy of fusing CT and 3D photo data sets, and postsurgical changes.


CONCLUSIONS
3D color maps aid the objective assessment of craniofacial structures while enhancing visual comprehension and communication with patients.
Jayaratne
Yasas S N
YS
Discipline of Oral & Maxillofacial Surgery, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR.
Zwahlen
Roger A
RA
Lo
John
J
Cheung
Lim K
LK
D000328:Adult; D002508:Cephalometry / Q000295:instrumentation / Q000379:methods*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional; D007834:Lasers; D008297:Male; D010780:Photogrammetry; D014057:Tomography, X-Ray Computed / Q000379:methods