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CPC
COOPERATIVE PATENT CLASSIFICATION
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G01T
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 )
NOTE
-
This subclass covers the measurement of X-radiation, gamma radiation, corpuscular radiation, cosmic radiation or neutron radiation.

Attention is drawn to the Notes following the title of class G01.

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G01T 1/00
Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation ( G01T 3/00 , G01T 5/00 take precedence )
G01T 1/003
.
{
Scintillation (flow) cells
}
G01T 1/006
.
{
Total absorption calorimeters; Shower detectors
}
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G01T 1/02
.
Dosimeters ( G01T 1/15 takes precedence, measuring exposure time to X-rays H05G 1/28 )
G01T 1/023
. .
{
Scintillation dose-rate meters
}
G01T 1/026
. .
{
Semiconductor dose-rate meters
}
G01T 1/04
. .
Chemical dosimeters ( G01T 1/06 , G01T 1/08 take precedence )
G01T 1/06
. .
Glass dosimeters
{
using colour change; including plastic dosimeters
}
G01T 1/08
. .
Photographic dosimeters ( sensitive materials, processing thereof G03C ;
{
photometry G01J 1/52
}
 )
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G01T 1/10
. .
Luminescent dosimeters
G01T 1/105
. . .
Read-out devices ( G01T 1/115 takes precedence )
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G01T 1/11
. . .
Thermo-luminescent dosimeters
{
( thermo-luminescent compositions C09K 11/00 )
}
G01T 1/115
. . . .
Read-out devices
G01T 1/12
. .
Calorimetric dosimeters
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G01T 1/14
. .
Electrostatic dosimeters ( construction of ionisation chambers H01J 47/02 ;
{
electrometers G01R 5/28
}
 )
G01T 1/142
. . .
Charging devices ; Read-out devices
G01T 1/15
.
Instruments in which pulses generated by a radiation detector are integrated, e.g. by a diode pump circuit ( pulse rate meters in general G01R 23/02 )
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G01T 1/16
.
Measuring radiation intensity ( G01T 1/29 takes precedence;
{
self-powered detectors G01T 3/006 ; using an ionisation chamber filled with a liquid or solid, e.g. frozen liquid, dielectric G01T 3/008
}
 )
G01T 1/1603
. .
{
with a combination of at least two different types of detector ( see provisionally also G01T 1/16 )
}
G01T 1/1606
. .
{
with other specified detectors not provided for in the other sub-groups of G01T 1/16 ( see provisionally also G01T 1/16 )
}
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G01T 1/161
. .
Application in the field of nuclear medicine, e.g. in vivo counting
{
( apparatus for radiation diagnosis A61B 6/00 )
}
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G01T 1/1611
. . .
{
using both transmission and emission sources sequentially ( SPECT imaging G01T 1/1642 ; PET imaging G01T 1/2985 ; detecting hidden objects, e.g. weapons, explosives G01V 5/00 D )
}
G01T 1/1612
. . . .
{
with scintillation detectors ( G01T 1/20 takes precedence )
}
G01T 1/1614
. . . .
{
with semiconductor detectors ( G01T 1/24 takes precedence )
}
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G01T 1/1615
. . .
{
using both transmission and emission sources simultaneously ( SPECT imaging G01T 1/1642 ; PET imaging G01T 1/2985 ; detecting hidden objects, e.g. weapons, explosives G01V 5/00 D )
}
G01T 1/1617
. . . .
{
with scintillation detectors ( G01T 1/20 takes precedence )
}
G01T 1/1618
. . . .
{
with semiconductor detectors ( G01T 1/24 takes precedence )
}
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G01T 1/163
. . .
Whole body counters
{
hand or feet contamination measurement G01T 1/167 ; lung, brain, thyroid, kidney or the like counting G01T 1/16
}
G01T 1/1635
. . . .
{
involving relative movement between detector and subject; scanning beds ( profile scanning G01T 1/166 ; positioning patients, tiltable tables for radiation diagnosis A61B 6/04 )
}
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G01T 1/164
. . .
Scintigraphy ( radioisotopes G21G 4/00 ; tracers G21H 5/00 ;
{
measurement of spatial distribution G01T 1/2914 ; apparatus for radiation diagnosis in different planes A61B 6/02
}
 )
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G01T 1/1641
. . . .
{
Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras
}
G01T 1/1642
. . . . .
{
using a scintillation crystal and position sensing photodetector arrays, e.g. ANGER cameras
}
G01T 1/1644
. . . . .
{
using an array of optically separate scintillation elements permitting direct location of scintillations ( G01T 1/1645 takes precedence )
}
G01T 1/1645
. . . . .
{
using electron optical imaging means, e.g. image intensifier tubes, coordinate photomultiplier tubes, image converter
}
G01T 1/1647
. . . . .
{
Processing of scintigraphic data ( not related to a particular imaging system G01T 1/2992 ; special purpose computers for nuclear physics G06F15/52 )
}
G01T 1/1648
. . . . .
{
Ancillary equipment for scintillation cameras e.g. reference markers, devices for removing motion artifacts, calibration devices ( adapted for flow studies G01T 1/1647 )
}
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G01T 1/166
. . . .
involving relative movement between detector and subject (
{
scanners in general without using scintigraphy G01T 1/2964
}
 )
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G01T 1/1663
. . . . .
{
Processing methods of scan data, e.g. involving contrast enhancement, background reduction, smoothing, motion correction, dual radio-isotope scanning, computer processing ( for measuring spatial distribution of radiation G01T 1/2992 ; 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 ) ; Ancillary equipment ( colour printers G01T 1/1666 )
}
G01T 1/1666
. . . . . .
{
adapted for printing different symbols or colours according to the intensity or energy level of the detected radioactivity ( depth discrimination in colour G01T 1/2985 )
}
G01T 1/167
. .
Measuring radioactive content of objects, e.g. contamination ( whole body counters G01T 1/163 )
G01T 1/169
. .
Exploration, location of contaminated surface areas ( prospecting by the use of nuclear radiation e.g. of natural or induced radioactivity G01V 5/00 )
{
in situ measurement, e.g. floor contamination monitor ( directional detectors G01T 1/2907 )
}
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G01T 1/17
. .
Circuit arrangements not adapted to a particular type of detector
{
( pulse-selection circuits H03K , G01R )
}
G01T 1/171
. . .
{
Compensation of dead-time counting losses ( see provisionally also 1/17 )
}
G01T 1/172
. . .
with coincidence circuit arrangements ( G01T 1/178 takes precedence;
{
combination of detectors, see G01T 1/1603 , G01T 1/30 , G01T 1/361 , G01T1/36D2 , G01T1/36D3
}
 )
G01T 1/175
. . .
Power supply circuits ( power supply circuits per se H02J ; converters H02M )
G01T 1/178
. . .
for measuring specific activity in the presence of other radioactive substances, e.g. natural, in the air or in liquids such as rain water
G01T 1/18
. .
with counting-tube arrangements, e.g. with Geiger counters ( tubes H01J 47/08 ;
{
with alarm provision G01T 7/125
}
 )
G01T 1/185
. .
with ionisation chamber arrangements ( construction of ionisation chambers H01J 47/02 ;
{
gas analysis by ionisation G01N 27/66 ; measuring pressure G01L 9/00 ; leak detection G01M 3/00 ; tele-measurements G08C
}
 )
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G01T 1/20
. .
with scintillation detectors
G01T 1/2002
. . .
{
Optical details, e.g. refecting or diffusing layers
}
G01T 1/2004
. . .
{
Scintilloscopes ( fluoroscopes G21K 4/00 ; radiation diagnosis A61B 6/00 )
}
G01T 1/2006
. . .
{
using a combination of a scintillator and photodetector which measures the means radiation intensity
}
G01T 1/2008
. . .
{
using a combination of different types of scintillation detectors, e.g. phoswich
}
WARNING
-
Pending reclassification, for subject-matter regarding phoswich see also G01T 1/20

G01T 1/201
. . .
{
using scintillating fibres
}
WARNING
-
Not complete, see also G01T 1/2992

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G01T 1/2012
. . .
{
using stimulable phosphors, e.g. stimulable phosphor sheets
}
WARNING
-
This group and subgroups are not complete pending reclassification; see also group G01T 1/2992

G01T 1/2014
. . . .
{
Reading out of stimulable sheets, e.g. latent image
}
G01T 1/2016
. . . .
{
Erasing of stimulable sheets, e.g. with light, heat or the like
}
G01T 1/2018
. . .
{
Scintillation-photodiode combination
}
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G01T 1/202
. . .
the detector being a crystal
G01T 1/2023
. . . .
{
Selection of materials ( see provisionally also G01T 1/202 )
}
G01T 1/2026
. . . .
{
Well-type detectors ( see provisionally also G01T 1/202 )
}
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G01T 1/203
. . .
the detector being made of plastics
G01T 1/2033
. . . .
{
Selection of materials ( see provisionally also G01T 1/203 )
}
G01T 1/2036
. . . .
{
Well-type detectors ( see provisionally also G01T 1/203 )
}
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G01T 1/204
. . .
the detector being a liquid
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G01T 1/2042
. . . .
{
Composition for liquid scintillation systems
}
G01T 1/2045
. . . . .
{
Liquid scintillation quench systems
}
G01T 1/2047
. . . . .
{
Sample preparation
}
G01T 1/205
. . .
the detector being a gas
G01T 1/208
. . .
Circuits specially adapted for scintillation detectors, e.g. for the photo-multiplier section
G01T 1/22
. .
with Cerenkov detectors
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G01T 1/24
. .
with semiconductor detectors ( semiconductor devices per se H01L 31/00 )
G01T 1/241
. . .
{
Electrode arrangements, e.g. continuous or parallel strips or the like ( constructional or manufacturing details H01L 31/00 )
}
G01T 1/242
. . .
{
Stacked detectors, e.g. for depth information
}
 ( constructional or manufacturing details H01L 25/00 ) ]
G01T 1/243
. . .
{
Modular detectors, e.g. arrays formed from self contained units ( constructional or manufacturing details H01L 25/00 )
}
G01T 1/244
. . .
{
Auxiliary details, e.g. casings, cooling, damping or insulation against damage by e.g. heat, pressure or the like
}
G01T 1/245
. . .
{
using memory cells
}
G01T 1/246
. . .
{
utilizing latent read-out, e.g. charge stored and read-out later
}
G01T 1/247
. . .
{
Detector read-out circuitry ( for processing gain or off-set correction H04N )
}
G01T 1/248
. . .
{
Silicon photomultipliers [SiPM], e.g. an avalanche photodiode [APD] array on a common Si substrate
}
G01T 1/249
. . .
{
specially adapted for use in SPECT or PET ( SPECT imaging G01T 1/1642 ; PET imaging G01T 1/2985 ; detecting hidden objects, e.g. weapons, explosives G01V 5/00 D )
}
G01T 1/26
. .
with resistance detectors
{
( photoresistors H01L 31/00 )
}
G01T 1/28
. .
with secondary-emission detectors ( secondary-electron-emitting electrodes in general H01J 1/32 )
{
optionally combined with scintillation counters ( secondary emission tubes H01J 43/00 )
}
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G01T 1/29
.
Measurement performed on radiation beams, e.g. position or section of the beam ; Measurement of spatial distribution of radiation ( scintigraphy G01T 1/164 ; mass-spectrometers H01J 49/025 )
G01T 1/2907
. .
{
Angle determination; Directional detectors; Telescopes ( prospecting by the use of nuclear radiation, e.g. of natural or induced radioactivity G01V 5/00 )
}
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G01T 1/2914
. .
{
Measurement of spatial distribution of radiation
}
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G01T 1/2921
. . .
{
Static instruments for imaging the distribution of radioactivity in one or two dimensions; Radio-isotope cameras ( using scintigraphy G01T 1/1641 )
}
G01T 1/2928
. . . .
{
using solid state detectors
}
G01T 1/2935
. . . .
{
using ionisation detectors
}
G01T 1/2942
. . . .
{
using autoradiographic methods
}
G01T 1/295
. . . .
{
using coded aperture devices e.g. Fresnel zone plates ( handling of radiation of particles e.g. using diaphragms, collimators, diffraction G21K 1/00 )
}
G01T 1/2957
. . . .
{
using channel multiplier arrays ( channel multipliers H01J 43/18 ; G01T 1/1645 takes precedence )
}
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G01T 1/2964
. . .
{
Scanners ( using scintigraphy G01T 1/166 )
}
G01T 1/2971
. . . .
{
using solid state detectors
}
G01T 1/2978
. . .
{
Hybrid imaging systems, e.g. using a position sensitive detector (camera) to determine the distribution in one direction and using mechanical movement of the detector or the subject in the other direction or using a camera to determine the distribution in two dimensions and using movement of the camera or the subject to increase the field of view ( G01T 1/2985 takes precedence )
}
G01T 1/2985
. . .
{
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 )
}
G01T 1/2992
. . .
{
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 )
}
G01T 1/30
.
Measuring half-life of a radioactive substance
{
( period meters for nuclear fission reactors G21C 17/14 )
}
G01T 1/32
.
Measuring polarisation of particles
G01T 1/34
.
Measuring cross-section, e.g. absorption cross-section of particles
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G01T 1/36
.
Measuring spectral distribution of X-rays or of nuclear radiation
{
spectrometry ( pulse selection circuits per se H03K ; investigation of materials by radiation diffraction G01N 23/20 ; spectrometer tubes H01J 49/00 )
}
G01T 1/361
. .
{
with a combination of detectors of different types, e.g. anti-Compton spectrometers ( intensity measurement with a combination of detectors G01T 1/1603 ; with coincidence circuit G01T 1/172 ; se provisionally also G01T 1/36 )
}
NOTE
-
G01T 1/361 takes precedence over G01T 1/362

G01T 1/362
. .
{
with scintillation detectors ( see provisionally also G01T 1/36 , G01T 1/20 )
}
G01T 1/363
. .
{
with Cerenkov detectors
}
G01T 1/365
. .
{
with ionisation detectors e.g. proportional counter ( see provisionally also G01T 1/36 )
}
G01T 1/366
. .
{
with semi-conductor detectors ( see provisionally also G01T 1/36 )
}
G01T 1/367
. .
{
with resistance detectors ( see provisionally also G01T 1/36 )
}
G01T 1/368
. .
{
with secondary-emission detectors ( see provisionally G01T 1/36 )
}
G01T 1/38
. .
Particle discrimination and measurement of relative mass, e.g. by measurement of loss of energy with distance (dE/dx)
{
( constructional details of semiconductor detectors therefor H01L 31/00 )
}
G01T 1/40
. .
Stabilisation of spectrometers
{
( circuits specially adapted for scintillation detectors G01T 1/208 )
}
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G01T 3/00
Measuring neutron radiation ( G01T 5/00 takes precedence;
{
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
}
 )
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G01T 3/001
.
{
Spectrometry ( see provisionally also G01T 1/36 to G01T 1/368 -except G01T1/36D3 - , G01T 3/00 ; other sub-groups of G01T 3/00 take precedence )
}
G01T 3/003
. .
{
Recoil spectrometers ( light-nuclei recoil ionisation tubes per se H01J 47/1277 )
}
G01T 3/005
. .
{
Time-of-flight spectrometers ( see provisionally also G01T 3/00 )
}
G01T 3/006
.
{
using self-powered detectors ( for neutrons as well as for Y- or X-rays ) , e.g. using Compton-effect ( Compton diodes ) or photo-emission or a (n,B) nuclear reaction ( photovoltaic semiconductors H01L 31/00 ; photo-tubes H01J 40/00 ; thermionic generators H01J 45/00 ; radioisotopic generators G21H 1/00 , e.g. G21H 1/02, G21H 1/04 )
}
G01T 3/008
.
{
using an ionisation chamber filled with a gas, liquid or solid, e.g. frozen liquid, dielectric ( G01T 3/006 takes precedence )
}
G01T 3/02
.
by shielding other radiation
G01T 3/04
.
using calorimetric devices
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G01T 3/06
.
with scintillation detectors
G01T 3/065
. .
{
Spectrometry
}
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G01T 3/08
.
with semiconductor detectors ( semiconductor detectors per se H01L 31/00 )
G01T 3/085
. .
{
Spectrometry
}
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G01T 5/00
Recording of movements or tracks of particles ( spark chambers H01J 47/00 ) ; Processing or analysis of such tracks
G01T 5/002
.
{
using a combination of several movement of track recording devices ( detectors associated with recording chambers and only serving to trigger these chambers, see the appropriate groups of the chamber e.g. G01T 5/04 - G01T 5/08 ; see provisionally also G01T 5/00 and other sub-groups )
}
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G01T 5/004
.
{
Non-electrical readout of multi-wire or parallel-plate chambers ( non-electrical readout in such chambers per se H01J 47/22 )
}
G01T 5/006
. .
{
by optical methods
}
G01T 5/008
. .
{
by acoustical methods
}
G01T 5/02
.
Processing of tracks ; Analysis of tracks
{
( special purpose computers for nuclear physics G06F15/52 )
}
G01T 5/04
.
Cloud chambers, e.g. Wilson chamber
G01T 5/06
.
Bubble chambers
G01T 5/08
.
Scintillation chambers ( discharge tubes H01J 40/00 , H01J 47/00 ; semiconductor devices H01L )
G01T 5/10
.
Plates or blocks in which tracks or nuclear particles are made visible by after-treatment, e.g. using photographic emulsion, using mica
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G01T 5/12
.
Circuit arrangements with multi-wire or parallel-plate chambers, e.g. spark chambers ( tubes per se H01J 47/00 )
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G01T 5/122
. .
{
for readout of each individual wires; ( readout in such chambers per se H01J 47/16 ) ; for processing the output signals
}
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G01T 5/125
. . .
{
by using delay lines
}
G01T 5/127
. . . .
{
by using magnetostrictive delay lines
}
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G01T 7/00
Details of radiation-measuring instruments
G01T 7/005
.
{
calibration techniques ( stabilization of spectrometer G01T 1/40 )
}
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G01T 7/02
.
Collecting means for receiving or storing samples to be investigated
{
and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids ( sampling, preparing specimens for investigation in general G01N 1/00 , G01N 1/02 ; shielded cells or rooms structurally combined with manipulatin devices G21F ; measuring of chromatographically separated samples G01N 30/00 to G01N 30/96 )
}
G01T 7/04
. .
by filtration
G01T 7/06
. .
by electrostatic precipitation ( G01T 7/04 takes precedence )
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G01T 7/08
.
Means for conveying samples received
{
( i.e. sample changers G01N 35/00 )
}
G01T 7/10
. .
using turntables
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G01T 7/12
.
Provision for actuation of an alarm
G01T 7/125
. .
{
Alarm- or controlling circuits using ionisation chambers, proportional counters or Geiger-Mueller tubes, also functioning as UV detectors ( measuring radiation intensity with counting tubes G01T 1/18 ; measuring radiation intensity with ionisation chambers G01T 1/185 ; fire alarms actuated by presence of radiation of particles, e.g. of infra-red radiation, of ions G08B7/12 ; flame monitoring in combustion devices F23Q 7/00 , F23N ; discharge tubes per se H01J 47/00 )
}
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Last Modified: 04/16/2013 4:31:16 PM