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MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N; counters per se G06M, H03K; electric discharge tubes for analysing radiation or particles H01J 40/00, H01J 47/00, H01J 49/00 )
Definition statement
This subclass/group covers:
  • Methods and instruments for measurement and detection of X-radiation, gamma radiation, corpuscular radiation, cosmic radiation, or neutron radiation.
  • Recording of movements or tracks of particles.
  • Details of instruments for measuring of X-radiation, gamma radiation, corpuscular radiation, cosmic radiation, or neutron radiation.
Relationship between large subject matter areas

Apparatus for radiation diagnosis or therapy in medical and veterinary science are classified in A61B 6/00 or A61N 5/00. The borderline between G01T and A61B should be determined based on whether the apparatus is purely medical or the feature is more of a general technical nature.

There exists a certain overlap between X-radiation and UV-radiation, where measurement of UV-radiation is generally classified in G01J.

Nuclear magnetic resonance is classified in G01R33/20G01NG01R24/00 or A61B 5/055.

References relevant to classification in this subclass
This subclass/group does not cover:
Radiation analysis of materials, mass spectrometry
Electric discharge tubes for analysing radiation or particles
Construction of ionisation chambers
Spark chambers
Semiconductor detectors per se
Secondary-electron-emitting electrodes in general

Examples of places where the subject matter of this class is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Prospecting by the use of nuclear radiation, natural or induced
Informative references
Attention is drawn to the following places, which may be of interest for search:
Measuring exposure time to X-rays
Photosensitive materials or processes for photographic purposes
Pulse rate meters in general
Applying radioactive material to the body
A61M36/00
Radio isotopes
Tracers
Counters per se
Computerised tomographs
Nuclear magnetic computer tomography
Nuclear magnetic resonance.
Radiation pyrometry using electric radiation detectors which use the ionisation of gases
Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
Measuring
attention is drawn to the Notes following the title of class G01
Corpuscular radiation
a stream of atomic or subatomic particles which may be charged positive or negative, or be uncharged
Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation (G01T 3/00, G01T 5/00 take precedence)
Definition statement
This subclass/group covers:
  • Methods and instruments for measurement and detection of X-radiation, gamma radiation, corpuscular radiation, cosmic radiation, or neutron radiation.
  • Recording of movements or tracks of particles.
  • Details of instruments for measuring of X-radiation, gamma radiation, corpuscular radiation, cosmic radiation, or neutron radiation.
Relationship between large subject matter areas
  • Apparatus for radiation diagnosis or therapy in medical and veterinary science are classified in A61B 6/00 or A61N 5/00. The borderline between G01T and A61B should be determined based on whether the apparatus is purely for medical diagnosis or the feature is more of a general technical nature.
  • There exists a certain overlap between x-radiation and UV-radiation, where measurement of UV-radiation is generally classified in G01J.
  • Nuclear magnetic resonance is classified in G01R 33/20, G01N 24/00 or A61B 5/055.
References relevant to classification in this group
This subclass/group does not cover:
Radiation analysis of materials, mass spectrometry
Electric discharge tubes for analysing radiation or particles
Construction of ionisation chambers
Semiconductor detectors per se
Secondary-electron-emitting electrodes in general
Informative references
Attention is drawn to the following places, which may be of interest for search:

Attention is drawn to the following places, wich may be interest for search:

Photosensitive materials or processes for photographic purposes
Pulse rate meters in general
Applying radioactive material to the body
A61M36/00
Radio isotopes
Tracers
Spark chambers
Counters per se
Computerised tomography for diagnosis
Prospecting by the use of nuclear radiation, natural or induced
Measuring exposure time to X-rays
Nuclear magnetic computer tomography
Nuclear magnetic resonance.
Radiation pyrometry using electric radiation detectors which use the ionisation of gases
Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects Semiconductor detectors constructional details and devices
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
Measuring
Attention is drawn to the Notes following the title of class G 01.
Corpuscular radiation
a stream of atomic or subatomic particles which may be charged positive or negative, or be uncharged.
Measuring radiation intensity (G01T 1/29 takes precedence; [N: self-powered detectors G01T 3/006; using an ionisation chamber filled with a liquid or solid, e.g. frozen liquid, dielectric G01T 3/008 ])
Informative references
Attention is drawn to the following places, which may be of interest for search:
Arrangements or instruments using NMR
Electrical or Magnetic Prospecting using NMR
Special rules of classification within this group

The combined use of CT and NMR as one device is to be classified here as well as in G01R 33/00 depending on the invention details.

If the invention details are directed towards the CT aspects then it will be for G01T even though NMR is mentioned. Conversely, invention details pertaining to the NMR will go to G01R 33/00 and not G01T.

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
NMR
Nuclear Magnetic Resonance (imaging of nuclei of atoms inside the body using a magnetic field)
Application in the field of nuclear medicine, e.g. in vivo counting [N: (apparatus for radiation diagnosis A61B 6/00)]
Definition statement
This subclass/group covers:

Hand held surgical probe detectors used for locating or scanning an area of the body

Intracorporeal devices for detecting radiation from within the body (e.g. endoscopy, laparoscopy etc).

Informative references
Attention is drawn to the following places, which may be of interest for search:
For Use In Medical Diagnosis
[N: using a scintillation crystal and position sensing photodetector arrays, e.g. ANGER cameras]
Definition statement
This subclass/group covers:

Using one single scintillator with several photodetectors

[N: using an array of optically separate scintillation elements permitting direct location of scintillations (G01T 1/1645 takes precedence)]
Definition statement
This subclass/group covers:

Using several individual scintillator-photodiode arrays

[N: using coded aperture devices e.g. Fresnel zone plates (handling of radiation of particles e.g. using diaphragms, collimators, diffraction G21K 1/00)]
References relevant to classification in this group
This subclass/group does not cover:
For Optical Applications (e.g. using light)
[N: In depth localisation e.g. using positron emitters; Tomographic imaging (longitudinal and transverse section imaging; apparatus for radiation diagnosis sequentially in different planes, steroscopic radiation diagnosis); (using external radiation sources A61B 6/02)]
Informative references
Attention is drawn to the following places, which may be of interest for search:
CT for use in medical diagnosis
[N: Radioisotope data or image processing not related to a particular imaging system; Off-line processing of pictures, e.g. rescanners (for measuring radiation intensity G01T 1/1663; digital computing or data processing equipment or methods specially adapted for nuclear physics or nuclear engineering G06F15/52, e.g. for image data processing G06F15/52D; general purpose image data processing G06T 1/00; computerized tomography G06T 11/003)]
Definition statement
This subclass/group covers:
  • Stimulable Phosphor Sheets.
  • Read-out systems using laser scanning.
  • Erasing of signal.
Stabilisation of spectrometers [N: (circuits specially adapted for scintillation detectors G01T 1/208)]
Definition statement
This subclass/group covers:

Stabilization of the photodetector using an internal source (e.g. LED) to overcome drift.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Calibration Techniques
Measuring neutron radiation (G01T 5/00 takes precedence; [N: tubes therefor H01J 47/12; circuits with such tubes G01T 1/18; measuring short time intervals G04F 10/00; measuring pulse characteristics G01R 29/02; neutron choppers G21K 1/04; polarimeters G01T 1/32])
Definition statement
This subclass/group covers:
  • Methods and instruments for measuring neutron radiation.
  • Neutron Detectors (e.g. Scintillators, Solid-State ).
Informative references
Attention is drawn to the following places, which may be of interest for search:
Investigating or analysing materials by determining their chemical or physical properties
Measuring reactor flux
Generating neutron beams
Using collimators, diaphragms
Neutron Sources
Detecting hidden objects e.g. weapons, narcotics, explosives
Ionisation Detectors
Recording of movements or tracks of particles (spark chambers H01J 47/00 ); Processing or analysis of such tracks
Scintillation chambers (discharge tubes H01J 40/00, H01J 47/00; semiconductor devices H01L)
Definition statement
This subclass/group covers:

Scintillation fibre (i.e. fibres made from scintillation material)

Informative references
Attention is drawn to the following places, which may be of interest for search:
Optical fibres used as connectors between scintillator and photodiodes
Details of radiation-measuring instruments
Definition statement
This subclass/group covers:
  • Detecting radiation from a safe distance (e.g. contaminated areas, highly radioactive objects).
  • Using remotely-controlled mobile detector units.
Informative references
Attention is drawn to the following places, which may be of interest for search:
Detector interrogation using an external network
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Last Modified: 10/11/2013