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Exact Documentation of Location and Size of Bladder Tumor with a Three–Dimensional Mapping Device
Author(s) -
Hatano Tadashi,
Oda Masami,
Ogawa Yoshihide,
Osawa Akira
Publication year - 1996
Publication title -
international journal of urology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 67
eISSN - 1442-2042
pISSN - 0919-8172
DOI - 10.1111/j.1442-2042.1996.tb00085.x
Subject(s) - endoscope , bladder tumor , position (finance) , medicine , measure (data warehouse) , artificial intelligence , computer vision , computer science , surgery , data mining , bladder cancer , finance , cancer , economics
Background Cystoscopy is one of the most important devices for diagnosing bladder tumor, but has a crucial shortcoming—the size of observed objects cannot be measured. This paper describes a new method to measure the position and size of a bladder tumor using a three–dimensional mapping device. Methods The three–dimensional mapping device, which is connected to an endoscope prior to use, can precisely measure the size and show the position of a bladder tumor. It consists of several arms connected by an angle sensor mounted on the articular site. One end of the device is fixed to the table and the other end is connected to the eye piece of an endoscope. Weight balancers keep each arm in a well balanced position, so urologists can freely manipulate the endoscope. Data from the angle sensor is sent to a personal computer (PC), which computes data such as three–dimensional coordination and diameter of a tumor. The diameter of a tumor is calculated by the PC according to the Pythagorean theorem. Conclusion The position and size of a bladder tumor can be measured using our three–dimensional mapping device.