Hamamatsu-photonics K.k.

Shizuoka University

Michiatsu Nakada

Masanori Kinpara

Yasuhiro Tomita

Yuji Shirayanagi

Shinjiro Matsui

Tadaaki Hirai

Syouji Kurebayashi

Hideyuki Suzuki

Haruhisa Kinoshita

Toshiaki Kawai

A radiation detector includes a signal readout substrate. The signal readout substrate is constructed by arranging pixel units having pixel electrodes in a two-dimensional matrix form on a front surface of a substrate. On a front surface of the signal readout substrate, formed is a photoconductive layer having crystallinity. On a front surface of the photoconductive layer, formed is a contact assistance layer having conductivity. On a front surface of the contact assistance layer, formed is a common electrode. A surface area per unit region of the front surface of the contact assistance layer is smaller than a surface area per unit region of the front surface of the photoconductive layer. In addition, the contact assistance layer is formed so as to include the common electrode and so as to be included in the front surface of the photoconductive layer when viewed from the front.

Radiation detector

A sound output portion, a power supply switch, and a power supply portion, which are provided at a detachable portion A of a manipulation gripare configured to be detachable from a main body portion B of the manipulation grip. Accordingly, upon sterilization using a sterilizing gas such as an EOG, the sound output portion, the power supply switch, and the power supply portioncan be removed on a detachable portion A basis. This in turn allows for using a sterilizing gas such as EOG to sterilize the radiation detector except the sound output portion, the power supply switch, and the power supply portion, thereby preventing damage caused by a negative pressure in the sound output portion

When the distal end of a radiation detection probe () is directed toward a place to be measured, pointer light emitted by a light-emitting device () sequentially passes through a transmission window (C) of a radiation detection element () and a projection window (E) of a probe cover () to be emitted onto the place to be measured. This pointer light clearly indicates the place as a bright spot. The radiation from the place passes through the distal end of the probe cover () to be collimated by a radiation-introducing window (A) of a side shield (), and then enters the radiation detection element (). The dose of the radiation is detected in this way.

A radiation detector having a head and a main body. The head has a probe and a first articulation. The probe contains a radiation detection element, and is movable due to the first articulation. Separately from the first articulation, a second articulation is provided on the main body or the head or therebetween. Accordingly, the radiation detector can move in a different way that allowed for by the first articulation. Combining the motion by the first articulation with the motion by the second articulation increases flexibility of handling the radiation detector. Hence the radiation detector has improved ease of operation.

A radiation detector has a main body (), and a radiation detection probe () detachably attached to the distal end of the main body (). The probe () includes a detection unit () accommodating a radiation detection element (), a cap-shaped shield member () mounted to the detection unit () so as to cover the distal end of the detection unit (), and a probe cover () accommodating the detection unit () and the shield member (). A connector () onto which the probe () is adapted to be screwed is provided on the distal end of the main body (). A collimator (A) for collimating incident radiation is provided on the distal end of the shield member ().

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Hamamatsu, Japan

Michiatsu Nakada