Shimadzu Corporation

Toshiba Medical Systems Corporation

National Institutes for Quantum and Radiological Science and Technology

National Institute of Radiological Sciences

The Japan Steel Works, Ltd.

Shumadzu Corporation

Kazuo Uemura

National Institute for Quantum and Radiological Science and Technology

Iwao Kanno

Kazuya Okamoto

Hitoshi Yamagata

Takuzo Takayama

Takahiro Nishimoto

Taiga Yamaya

Keishi Kitamura

Takayuki Obata

Yuichi Kimura

Chie Seki

Nobuya Hashizume

Yoshiharu Hirose

Kenichiro Koga

Shuichi Miura

Akira Mizuno

Tomoaki Tsuda

Tadasu Sugawara

Masahiko Handa

Yohjiro Toda

Matsutaro Murakami

In a PET device, a first detector includes a plurality of first scintillators and detects gamma rays emitted from positron-emitting radionuclides injected into a subject. A second detector is provided on the outer circumferential side of the first detector, includes a plurality of second scintillators arranged in an arrangement surface density lower than that of the first scintillators, and detects gamma rays that have passed through the first detector. A counted information acquiring unit acquires, as first counted information and second counted information, the detection positions, energy values, and detection time regarding gamma rays detected by the first detector and the second detector. Based on the detection time contained in each of the first counted information and the second counted information, an energy value adder generate corrected counted information by summing the energy values contained in the first counted information and the second counted information.

PET device, PET-MRI apparatus, and image processing method

In a PET (Positron Emission Tomography)-MRI (Magnetic Resonance Imaging) apparatus of an embodiment, a magnet that is a seamless structure generates a static magnetic field in a bore having a cylindrical shape. First detectors and second detectors are each formed in a ring shape and detect gamma rays emitted from positron emitting radionuclides injected into a subject. The first detectors and the second detectors are disposed with a space therebetween in an axial direction of the bore so as to interpose the magnetic field center of the static magnetic field therebetween.

PET-MRI apparatus

In a PET (Positron Emission Tomography)-MRI (Magnetic Resonance Imaging) apparatus of an embodiment, a transmitting radio frequency coil applies a radio frequency magnetic field on a subject placed in a static magnetic field. A detector is formed in a ring shape, disposed on a side adjacent to an outer circumference of the transmitting radio frequency coil, includes at least two PET detectors disposed with a space therebetween in an axial direction of a bore so as to interpose the magnetic field center of the static magnetic field therebetween, and detects gamma rays emitted from positron emitting radionuclides injected into the subject. Radio frequency shields are each formed in an approximately cylindrical shape, disposed between the transmitting radio frequency coil and the detector, and shield the radio frequency magnetic field generated by the transmitting radio frequency coil.

A boundary calculating unit is provided for determining boundaries between separated plasma and blood cell or air and plasma whose image is picked up by an image pickup unit. With such boundary calculating unit provided, the boundaries between the separated plasma and blood cell or air and plasma can be determined, and areas of the separated air, plasma, and blood cell can be determined accurately. Particularly, a straight line drawing unit is provided for drawing, on the image picked up, a plurality of straight lines parallel to grooves in a disk which performs plasma separation. The boundary calculating unit can easily determine the boundaries by determining the boundaries based on a profile of the plurality of straight lines drawn by the straight line drawing unit.

Measuring system capable of separating liquid and determining boundary of separated liquid

A blood collecting apparatus includes a cleaning solution piping. The cleaning solution piping feeds into a flow path a heparin solution which is a liquid other than blood to be measured, in order to return the blood present in the flow path to a catheter disposed upstream of a blood inlet of the flow path. Thus, the blood having flowed into the flow path in an amount more than is necessary for blood collection, which corresponds to a portion returned to the upstream catheter of the blood to be measured present in the flow path, can be used in a next blood collection. As a result, the amount of collected blood can be reduced. The liquid to be measured is separated apart by means of a gas, and the flow path is cleaned in a way to leave no impurities in the flow path, thereby preventing impurities from mixing into the liquid to be measured.

Liquid collecting system and a method therefor

A blood collecting apparatus includes a main flow path and a pressure generator. The pressure generator is provided in an intermediate position of the main flow path to insert a gas as separators at designated predetermined intervals, thereby to take out blood to be measured, as separated in a time series. The blood can be taken out in minute volumes by inserting the separators consisting of the gas while feeding the blood continuously into the main flow path in this way. And consumption of the blood can be held down, and the amount of collected blood can be minimized. Since the operation to insert the separators is excellent in speed, repeated collection in a short time, i.e. frequency of blood collection, can be secured.

Measuring apparatus, and liquid collecting and measuring system having the same

An apparatus for producing and automatically injecting H.sub.2.sup.15 O, having: a target box adapted to be irradiated with a deuteron beam, a gas supplying device for supplying a hydrogen gas and a nitrogen gas as raw-material gases to the target box a radioactive-isotope conveying pipe connecting the target box and a vacuum pump for maintaining the interior of the target box and the interior of the radioactive-isotope conveying pipe in a vacuum state. In addition, the apparatus has an injection-fluid producing device and an automatic injection device, wherein the target box, the injection-fluid producing device and the automatic injection device are fluidly communicated with one another.

Apparatus and method for producing and automatically injecting

Emission computed tomograph wherein a pluralty of detectors surround an object to be examined so as to detect X- or gamma radiation emitted by said object. In front of each of said detectors there is provided a collimator which comprises a pair of main plates and a subsidiary plate interposed therebetween. The plates are made of a material capable of blocking penetration of the radiation therethrough and so supported as to be swingable over an angle sufficient to cover the whole of said object. The plates of all the collimators are simultaneously swung to the same side and at the same angular speed thereby to change the direction of incidence of said radiation on each of said detectors.

Emission computed tomograph

An emission computed tomograph provided with different types of collimators for selective use with different kinds of radionuclides. The different collimators are alternatively brought into operative position in front of the radiation detector in accordance with the kind of radionuclide being used.

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Chiba, Japan

Iwao Kanno