1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS C IEC 61675 2 2： KS C IEC 61675 2： 2007(2012 ) 2007 11 29 http:/www.kats.go.krKS C IEC 61675 2： 2007 : ( ) ( ) ( ) : (http:/www.standard.go.kr) ： ：2007 11 29 ：2012 12 20 2012-0725 ： ： ( 02-509-7294) (http:/www.kats.go.kr). 10 5 , . KS C IEC 61675 2： 2007
2、(2012 ) 2： Radionuclide imaging devices Characteristics and test conditionsPart 2： Single photon emission computed tomographs 2005 1.1 IEC 61675 2, Radionuclide imaging devices Characteristics and test conditions Part 2： Single photon emission computed tomographs , . 1 1.1 (SPECT) . KS C IEC 61675 K
3、S C IEC 60789 . , , . . KS C IEC 61675 1 PET . . KS C IEC 61675 (SPECT) . SPECT . . 1.2 . KS C IEC 61675 2： 2007 2 . ( ) . KS A 4920： 2001, IEC 60788： 1984, Medical radiology Terminology KS C IEC 61675 1： 2007, 1： IEC 61675 1： 1998, Radionuclide imaging devices Characteristics and test conditions Pa
4、rt 1： Positron emission tomographs KS C IEC 61675 3： 2007, 3： IEC 61675 3： 1998, Radionuclide imaging devices Characteristics and test conditions Part 3： Gamma camera based wholebody imaging systems KS C IEC 60789： 2007, IEC 60789： 1992, Characteristics and test conditions of radionuclide imaging de
5、vices Anger type gamma cameras 2 KS A 4920, KS C IEC 60789 KS C IEC 61675 1( .) . . 2.1 (SYSTEM AXIS) (gamma camera) . 2.1.1 (COORDINATE SYSTEMS) 2.1.2 (FIXED COORDINATE SYSTEM) X, Y, Z Cartesian . ( 1 ) . (transverse slices) . 2.1.3 (COORDINATE SYSTEM OF PROJECTION) Xp Yp 2 Cartesian ( ). Yp . ( 1
6、). 2.1.4 (CENTRE OF ROTATION： COR) (transverse slices) (object plane) . KS C IEC 61675 2： 2007 3 2.1.5 (OFFSET) COR (X p) from Xp 0 2.2 (TOMOGRAPHY) A 2.2.1 (TRANSVERSE TOMOGRAPHY) 3 . , (collimation), , 2 . . 2.2.2 (EMISSION COMPUTED TOMOGRAPHY： ECT) 2 2.2.2.1 (PROJECTION) (projection beam) 2 3 , 1
7、 2 (process) (radon transform) . 2.2.2.2 (PROJECTION BEAM) 2.2.2.3 (PROJECTION ANGLE) (illustration) 1 2.2.2.4 (SINOGRAM) 1 2 . . 2.2.2.5 (OBJECT SLICE) . 2.2.2.6 (IMAGE PLANE) (plane) . . 2.2.2.7 KS C IEC 61675 2： 2007 4 (TOMOGRAPHIC VOLUME) . . 2.2.2.7.1 (TRANSVERSE FIELD OF VIEW) . . 2.2.2.7.2 (A
8、XIAL FIELD OF VIEW) . , (EW) . 2.2.2.7.3 (TOTAL FIELD OF VIEW) (3 ) 2.3 (IMAGE MATRIX) Cartesian 2.3.1 (MATRIX ELEMENT) (object) (volume element) (IMAGE MATRIX) 2.3.1.1 (PIXEL) 2 2.3.1.2 (TRIXEL) 3 2.3.2 (VOXEL) (2 3 ) . 3 . 2.4 (POINT SPREAD FUNCTION： PSF) 2.4.1 (PHYSICAL POINT SPREAD FUNCTION) . K
9、S C IEC 61675 2： 2007 5 (sampling), (image construction), (image processing) . . 2.4.2 (AXIAL POINT SPREAD FUNCTION) (peak) . 2.4.3 (TRANSVERSE POINT SPREAD FUNCTION) 2 . 2.5 (SPATIAL RESOLUTION) 2.5.1 (TRANSVERSE RESOLUTION) . 2.5.1.1 (RADIAL RESOLUTION) 2.5.1.2 (TANGENTIAL RESOLUTION) 2.5.2 (AXIAL
10、 RESOLUTION) . 2.5.3 (EQUIVALENT WIDTH： EW) (response function) , 2.6 (TOMOGRAPHIC SENSITIVITY) 2.6.1 (SLICE SENSITIVITY) (phantom) (activity) (SINOGRAM) (Single Photon Emission Computed Tomography： SPECT) KS C IEC 61675 2： 2007 6 (scatter fraction) . 2.6.2 (VOLUME SENSITIVITY) 2.6.3 (NORMALIZED VOL
11、UME SENSITIVITY) . 2.7 (SCATTER FRACTION： SF) 2.8 (SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY： SPECT) 2.8.1 (DETECTOR POSITIONING TIME) 2.8.2 (DETECTOR HEAD TILT) 2.8.3 (RADIUS OF ROTATION) 2.9 (RADIOACTIVE SOURCE) KS A 4920 rm 2 02 2.9.1 (POINT SOURCE) 3 function (source) 2.9.2 (LINE SOURCE) 2 func
12、tion 3 2.10 (POSITRON EMISSION TOMOGRAPHY： PET) KS C IEC 61675 1, 2.1.3 2.10.1 (POSITRON EMISSION TOMOGRAPHY) KS C IEC 61675 2： 2007 7 KS C IEC 61675 1, 2.1.3.1 2.10.2 (ANNIHILATION RADIATION) KS C IEC 61675 1, 2.1.3.2 2.10.3 (LINE OF RESPONSE： LOR) KS C IEC 61675 1, 2.1.3.5 (PET) , 2 (line) 2.10.4
13、(TOTAL COINCIDENCES) KS C IEC 61675 1, 2.1.3.6 2.10.4.1 (TRUE COINCIDENCES) 2 KS C IEC 61675 1, 2.1.3.6.1 2.10.4.2 (SCATTERED TRUE COINCIDENCE) KS C IEC 61675 1, 2.1.3.6.2 2.10.4.3 (UNSCATTERED TRUE COINCIDENCES) KS C IEC 61675 1, 2.1.3.6.3 2.10.4.4 (RANDOM COINCIDENCE) 2 KS C IEC 61675 1, 2.1.3.6.4
14、 2.10.5 (SINGLES RATE) . , (energy discrimination) KS C IEC 61675 1, 2.1.3.7 2.10.6 (TWO-DIMENSIONAL RECONSTRUCTION) 2 , . . . 2 . , (data set) KS C IEC 61675 2： 2007 8 . , (septa) (small acceptance angles) . , (large) “ (single slice rebinning)” KS C IEC 61675 1, 2.1.4.1. 2.10.7 3 (TREE-DIMENSIONAL
15、 RECONSTRUCTION) 3 , . . , . 3 KS C IEC 61675 1, 2.1.4.2. 2.11 (RECOVERY COEFFICIENT) ( ) . , KS C IEC 61675 1, 2.5. 2.12 (NORMALIZED SLICE SENSITIVITY) (slice width： EW) KS C IEC 61675 1, 2.6.1.1. 2.12.1 (COUNT RATE CHARACTERISTIC) KS A 4920, rm 34 21 2.12.2 (COUNT LOSS) (resolving time) KS C IEC 6
16、1675 1, 2.7.1 2.12.3 (ADDRESS PILE UP) (event) 2 KS C IEC 61675 1, 2.7.4, . 2.12.4 (RADIOACTIVE SOURCE) KS A 4920, rm 20 02 3 KS C IEC 60789 1 . (setting) . KS C IEC 61675 2： 2007 9 (parameters) . (deviation) . , 360 . , ( , 3 120) . . , 20 000 . 1 . KS C IEC 60789 . 3.1 (Calibration measurements) 3
17、.1.1 Measurement of the CENTRE OF ROTATION(COR) Xp, Yp ( , object slice ) . (point source) Xp ( 1 ). Xp (point source) . 360 32 . 20 cm . (source) 5 cm . (offset) , Z 3 , 2 1/3 . 10 000 (length) 4 mm . Xp (source) ( ) Xp( ) (source) Yp Y 50 mm . . (offset) (source) Xp() . XAXp+= )(sin)( ： A ： ： X ：
18、3 1 Xp Yp . Xp Yp ( ) 50 mm . “p” ( 1 ). 2 X 0(zero) . KS C IEC 61675 2： 2007 10 , (fit and data) ( ) . (millimeters) . 3 (systematic deviations) . 3.1.2 (DETECTOR HEAD TILT) . . 3.1.1 Xp Yp Yp( ) . . . DBYp+= )(sin)( ： B ： (amplitude) ： (phase shift) arcsin=a B/A A： COR (3.1.1) B 0(zero) D Yp( ) .
19、(fit and data) ( ) . 3.2 (misalignment) . X, Y, Z (grid) . 10 cm 20 cm . , . 3.3 SPECT 3.3.1 (DETECTOR POSITIONING TIME) . . “ (step and shoot)” . 99mTc . 1 000 cps . Pj ( 60, 120 ) 2 360 KS C IEC 61675 2： 2007 11 10 s Tacq . j 60 120 (low) (high) . Tj . Tj . . Tpos . j,jj,j,jN)TN(NTstatictotalstaticpos,= Ntotal： Nstatic ： Tpos Tpos . )1(,pos,pos=jjjPTT cj . jjjjTTTc,pos,acq,acq+= cj 30 s( ) 15 s( ) Tpos,j j . 30 . 3.3.2 (NORMALIZED VOLUME SENSITIVITY) 99mTc 3 mm1 mm, 190 mm3 mm( 2 ) 200 mm3 mm (phantom) . aave(
