| Summary: | 碩士 === 國立成功大學 === 資訊及電子工程研究所 === 83 === ERCP is one of the most widely used tools for investigating
biliary disease in clinical medicine. Traditionally, physi-
cians usually visually identify 3-D biliary tree structure from
2-D X-ray films. Unfortunately, diagnosis results based on
human observation often vary from person to person and from
time to time. In order to improve the disadvatange and
inconvenience of the traditional approach,we use the biplane
reconstruction technique to build a workstation-based image
analysis system for 3-D biliary reconstruction. The entire
system was developed on SUN 4 Sparc workstation under OPEN
WINDOWS operating environment using C language. Our system
provides many convenient and efficient operations to recon-
struct the 3-D biliary tree structure, the physicians can
quickly understand the whole 3-D biliary tree structure by
using our system. It can be used to aid the diagnosis of the
biliary disease. Our system is a 3-D biliary reconstruction
system based on the biplane reconstruction technique. The
entire system can be decomposed into following procedures. At
first, two orthogonal biliary tract images are acquired as
patients receive ERCP. A series of operations are perform ed,
including image segmentation, alignment, thinning, feature
extraction of 2-D biliary segment, segment matching, 3-D
biliary reconstruction, surface interpolation, shading and
rendering. After the fulfillment of the proposed system, 3-D
biliary reconstruction can be finished in an efficient manner,
and the physicians can observe the 3-D structure of the biliary
tree with simple operations.
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