【正文】 CCOMPANYING DOCUMENTS .................................................................................... 19 References in subclauses .......................................................................... 20 Dosimetric calibration ................................................................................ 20 General requirements for the reference of subassemblies and ACCESSORIES .............................................................................................. 20 Instructions for use .................................................................................... 21 6 RADIATION management ................................................................................................. . 22 General ................................................................................................................. 22 Initiation and termination of the IRRADIATION .......................................................... 23 Normal initiation and termination of the IRRADIATION ................................... 23 Safety measures against failure of normal termination of the IRRADIATION ................................................................................................ 23 RADIATION dose and RADIATION Q UA LITY................................................................. . 23 Adjustment of RADIATION dose and RADIATION QUALITY ................................ 23 Reproducibility of the RADIATION output ...................................................... 23 Indication of operational states .............................................................................. 24 Indication of the XRAY SOURCE ASSEMBLY selected .................................... 24 Indication of LOADING STATE ....................................................................... 24 Indication of LOADING FACTORS and MODES OF O P E RA TI O N............................ 24 Indication of automatic modes ................................................................... 24 Dosimetric indications................................................................................ 25 AUTOMATIC CONTROL SYSTEM .................................................................................. 25 SCATTERED RADIATION reduction ............................................................................. 25 Imaging performance ............................................................................................ . 25 General ..................................................................................................... 25 System performance .................................................................................. 25 Nominal focal spot value............................................................................ 26 RADIATION DETECTOR or XRAY IMAGE RECEPTOR .......................................... 26 7 RADIATION QUALITY .......................................................................................................... 26 – 5 – BS EN 6060113:2020 HALFVALUE LAYERS and TOTAL FILTRATION in XRAY EQUIPMENT ............................... 26 W aveform of the XRAY TUBE VOLTAGE................................................................ 27 Indication of FILTER properties ............................................................................... 27 Test for FILTRATION by irremovable materials ......................................................... 28 Test for ADDED FILTERS and materials ..................................................................... 28 Test for HALFVALUE LAYER ..................................................................................... 28 8 Limitation of the extent of the XRAY BEAM and relationship between XRAY FIELD and IMAGE RECEPTION AREA ............................................................................................. 28 General ................................................................................................................ . 28 Enclosure of XRAY TUBES ...................................................................................... 28 Limiting DIAPHRAGM in XRAY TUBE ASSEMBLIES ....................................................... 29 Confinement of EXTRAFOCAL RADIATION ................................................................. 29 Relationship between XRAY FIELD and IMAGE RECEPTION AREA ............................... 29 General ..................................................................................................... 29 * FOCAL SPOT TO IMAGE RECEPTOR DISTANCE ................................................ 29 Correspondence between XRAY FIELD and EFFECTIVE IMAGE RECEPTION AREA ......................................................................................... 29 Positioning of the PATIENT and restriction of the irradiated area.................. 30 9 FOCAL SPOT TO SKIN DISTANCE .......................................................................................... 30 General ................................................................................................................. 30 Information in the ACCOMPANYING DOCUMENTS ........................................................ 30 10 ATTENUATION of the XRAY BEAM between the PATIENT and the XRAY IMAGE RECEPTOR ..................................................................................................... .................. 30 General ................................................................................................................. 30 Information in the ACCOMPANYING DOCUMENTS ........................................................ 30 11 Protection against RESIDUAL RADIATION ............................................................................ 31 12 * Protection against LEAKAGE RADIATION ................