Cephalograms are clinically useful for cephalometric diagnosis and superimposition. The measurements for cephalometry has always been done manually in practice. We have developed a cephalometric analysis system which can be used to improve the measurements by computer software. The software was developed as a multi-document interface (MDI) application under the environment of Microsoft Windows. Two kinds of image, cephalograms and tracing papers, are supported. Three modules were included: (1) the automatic landmarking module locates landmarks on the digitized cephalograms; (2) the manual landmarking module provides a function manual to locate the landmarks on the screen through an interactive user interface; and (3) the cephalometric analysis module calculates the measurements. In our experience, it has been shown the system turns out to be a handy tool for orthodontists in diagnosis and treatment.
['Yen-Ting Chen', 'Kuo-Sheng Cheng', 'Jia-Kuang Liu']
A PC-based cephalometric analysis system