BS IEC 62220-2-1:2023
$142.49
Medical electrical equipment. Characteristics of digital X-ray imaging devices – Determination of dual-energy subtraction efficiency. Detectors used for dual-energy radiographic imaging
| Published By | Publication Date | Number of Pages |
| BSI | 2023 | 24 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 4 | English CONTENTS |
| 5 | FOREWORD |
| 7 | INTRODUCTION |
| 8 | 1 Scope 2 Normative references 3 Terms and definitions |
| 9 | 4 Requirements 4.1 Operating conditions 4.2 X-RAY EQUIPMENT |
| 10 | 4.3 RADIATION QUALITY 4.4 TEST DEVICE Figures Figure 1 – Test device for the determination of the dual-energy contrast |
| 11 | 4.5 Geometry 4.6 Irradiation conditions 4.6.1 General conditions Figure 2 – Geometry for all irradiations of the test device |
| 12 | 4.6.2 Irradiation for the determination of the dual-energy contrast 4.6.3 Air kerma measurement 5 Corrections of raw data |
| 13 | 6 Definitions of the regions of interest 7 Calculation of derived images 7.1 Calculation of high-energy and low-energy images Figure 3 – Feature and background regions of interest defined about circular image of features |
| 14 | 7.2 Calculation of tissue-subtracted images |
| 15 | 8 Determination of the dual-energy subtraction efficiency 8.1 Definition and formula of the 8.2 Determination of the dual-energy contrast |
| 16 | 9 Format of conformance statement |
| 17 | Annex A (informative)Dual-energy subtraction efficiency interpretation A.1 Metric description Figure A.1 – Sample DSE, results for a simulated multi-exposure device |
| 18 | A.2 Sample device comparisons |
| 19 | Figure A.2 – Sample DSE, results for a simulated multi-exposure device at increasing scintillator thickness Figure A.3 – Sample DSE, results for a simulated multi-exposure device at differing X‑ray tube voltage used for their high-energy irradiations |
| 20 | Figure A.4 – Sample DSE, results for a simulated multi-exposure devices at increasing pixel pitch |
| 21 | Bibliography |
| 22 | Index of defined terms used in this particular standard |
