Abstract: A detecting unit (2) detects radiation. A data acquiring block (34) creates basic data equivalent to the count per unit time of the detected radiation. A data processing block (40) compares the basic data with a threshold and generates a annunciation control signal when the basic data is above the threshold. An annunciation block (42) generates a detection sound in response to the annunciation control signal. A computing block (38) computes the threshold by using a coefficient specified by means of an input device (18) and the maximum value of the basic data stored in a storage block (36). When the user repetitively examines a region (50) to be measured while gradually increasing the threshold, the region where the detection sound is generated is gradually narrowed. With this, a portion (53) where radiation is concentrated in the region (50) can be found out.

Abstract: A detecting unit (2) detects radiation. A data acquiring block (34) creates basic data equivalent to the count per unit time of the detected radiation. A data processing block (40) compares the basic data with a threshold and generates a annunciation control signal when the basic data is above the threshold. An annunciation block (42) generates a detection sound in response to the annunciation control signal. A computing block (38) computes the threshold by using a coefficient specified by means of an input device (18) and the maximum value of the basic data stored in a storage block (36). When the user repetitively examines a region (50) to be measured while gradually increasing the threshold, the region where the detection sound is generated is gradually narrowed. With this, a portion (53) where radiation is concentrated in the region (50) can be found out.

Abstract: A radiation detector 6 detects radiation that passed through a specimen 2 by discriminating it by a plurality of energy regions. The radiation detector 6 includes a radiation detecting section 10 which generates output signals corresponding to energy of the incident radiation, and a signal processing section 20 which discriminates output signals by first through N-th signal discrimination thresholds T1 through TN and acquires regional counts A1 through AN as radiation counts in the plurality of energy regions W1 through WN by counting the discriminated output signals. The first through N-th signal discrimination thresholds T1 through TN are set so that reference regional counts A1(B) through AN(B) as regional counts in the plurality of energy regions W1 through WN when the radiation detecting section 10 detects radiation (reference radiation) before passing through the specimen 2 become substantially equal.

Abstract: A radiation detector 6 detects radiation that passed through a specimen 2 by discriminating it by a plurality of energy regions. The radiation detector 6 includes a radiation detecting section 10 which generates output signals corresponding to energy of the incident radiation, and a signal processing section 20 which discriminates output signals by first through N-th signal discrimination thresholds T1 through TN and acquires regional counts A1 through AN as radiation counts in the plurality of energy regions W1 through WN by counting the discriminated output signals. The first through N-th signal discrimination thresholds T1 through TN are set so that reference regional counts A1(B) through AN(B) as regional counts in the plurality of energy regions W1 through WN when the radiation detecting section 10 detects radiation (reference radiation) before passing through the specimen 2 become substantially equal.

Abstract: A sound output portion 7, a power supply switch 4, and a power supply portion 3, which are provided at a detachable portion A of a manipulation grip 1 are configured to be detachable from a main body portion B of the manipulation grip 1. Accordingly, upon sterilization using a sterilizing gas such as an EOG, the sound output portion 7, the power supply switch 4, and the power supply portion 3 can 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 7, the power supply switch 4, and the power supply portion 3, thereby preventing damage caused by a negative pressure in the sound output portion 7.

Abstract: When the distal end of a radiation detection probe (2) is directed toward a place to be measured, pointer light emitted by a light-emitting device (7) sequentially passes through a transmission window (5C) of a radiation detection element (5) and a projection window (3E) of a probe cover (3) 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 (3) to be collimated by a radiation-introducing window (4A) of a side shield (4), and then enters the radiation detection element (5). The dose of the radiation is detected in this way.

Abstract: 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.

Abstract: A radiation detector has a main body (1), and a radiation detection probe (2) detachably attached to the distal end of the main body (1). The probe (2) includes a detection unit (3) accommodating a radiation detection element (7), a cap-shaped shield member (6) mounted to the detection unit (3) so as to cover the distal end of the detection unit (3), and a probe cover (4) accommodating the detection unit (3) and the shield member (6). A connector (10) onto which the probe (2) is adapted to be screwed is provided on the distal end of the main body (1). A collimator (6A) for collimating incident radiation is provided on the distal end of the shield member (6).

Abstract: A sound output portion 7, a power supply switch 4, and a power supply portion 3, which are provided at a detachable portion A of a manipulation grip 1 are configured to be detachable from a main body portion B of the manipulation grip 1. Accordingly, upon sterilization using a sterilizing gas such as an EOG, the sound output portion 7, the power supply switch 4, and the power supply portion 3 can 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 7, the power supply switch 4, and the power supply portion 3, thereby preventing damage caused by a negative pressure in the sound output portion 7.

Abstract: A radiation detector has a main body (1), and a radiation detection probe (2) detachably attached to the distal end of the main body (1). The probe (2) includes a detection unit (3) accommodating a radiation detection element (7), a cap-shaped shield member (6) mounted to the detection unit (3) so as to cover the distal end of the detection unit (3), and a probe cover (4) accommodating the detection unit (3) and the shield member (6). A connector (10) onto which the probe (2) is adapted to be screwed is provided on the distal end of the main body (1). A collimator (6A) for collimating incident radiation is provided on the distal end of the shield member (6).

Abstract: When the distal end of a radiation detection probe (2) is directed toward a place to be measured, pointer light emitted by a light-emitting device (7) sequentially passes through a transmission window (5C) of a radiation detection element (5) and a projection window (3E) of a probe cover (3) 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 (3) to be collimated by a radiation-introducing window (4A) of a side shield (4), and then enters the radiation detection element (5). The dose of the radiation is detected in this way.

Abstract: 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.