Nellcor Puritan Bennett Incorporated

Kabushiki Kaisha Morita Seisakusho

J. Morita Manufacturing Corporation

Yoshio Uejima

Masakazu Suzuki

Kazunari Matoba

Takeshi Hayashi

Masanobu Yoshida

Nobuhiro Sakaguchi

Ryozo Koyama

Masaru Okumura

A dental treatment apparatus with a root canal length measurement function comprising a cordless handpiece equipped with at least a cutting tool drive motor, a root canal length measurement circuit and a power supply battery, and a charger equipped with at least a charge circuit for charging the power supply battery. With this structure, the handpiece can be operated as desired without interference with any tube since no tube is necessary to connect the handpiece to a main control unit, thereby capable of providing an easy-to-use treatment apparatus. By charging the power supply battery for the handpiece using the charger, the battery can be used repeatedly.

Dental treatment apparatus with a root canal length measurement function

Display device in medical examination and treatment system

In step s1, X-ray imaging is performed, and an image signal linear to the intensity of X-rays is stored in an image memory 7. Next, in step s2, the maximum from among image data is detected, and the maximum is set as reference value N0. In step s3, image data N is logarithmically converted in accordance with the following equation (a), and the converted data is stored in an image memory 7.

X-ray imaging apparatus and automatic density correction method

Growing community of inventors

Kyoto, Japan

Yoshio Uejima