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IEC 60336 : 4.0

IEC 60336 : 4.0

MEDICAL ELECTRICAL EQUIPMENT - X-RAY TUBE ASSEMBLIES FOR MEDICAL DIAGNOSIS - CHARACTERISTICS OF FOCAL SPOTS

International Electrotechnical Committee

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Table of Contents

FOREWORD<br>1 Scope<br>2 Normative references <br>3 Terms and definitions <br>4 Determinations for the evaluation of the FOCAL SPOT <br>&nbsp;&nbsp;&nbsp;characteristics<br>&nbsp;&nbsp;&nbsp;4.1 Statement of the FOCAL SPOT characteristics <br>&nbsp;&nbsp;&nbsp;4.2 Longitudinal axis of the X-RAY TUBE ASSEMBLY<br>&nbsp;&nbsp;&nbsp;4.3 REFERENCE AXIS of the X-RAY TUBE ASSEMBLY <br>&nbsp;&nbsp;&nbsp;4.4 Direction of evaluation for the FOCAL SPOT length<br>&nbsp;&nbsp;&nbsp;4.5 Direction of evaluation for the FOCAL SPOT width <br>5 FOCAL SPOT camera set-up<br>&nbsp;&nbsp;&nbsp;5.1 Overview<br>&nbsp;&nbsp;&nbsp;5.2 Test equipment <br>&nbsp;&nbsp;&nbsp;5.3 Test arrangement <br>&nbsp;&nbsp;&nbsp;5.4 Total uncertainty of the camera set-up <br>6 Production of RADIOGRAMS <br>&nbsp;&nbsp;&nbsp;6.1 Overview<br>&nbsp;&nbsp;&nbsp;6.2 Operating conditions <br>&nbsp;&nbsp;&nbsp;6.3 Production of FOCAL SPOT SLIT RADIOGRAMS or FOCAL <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;SPOT PINHOLE RADIOGRAMS<br>&nbsp;&nbsp;&nbsp;6.4 Statement of compliance <br>7 Determination of the LINE SPREAD FUNCTION<br>&nbsp;&nbsp;&nbsp;7.1 Overview<br>&nbsp;&nbsp;&nbsp;7.2 Measuring equipment and measuring arrangement<br>&nbsp;&nbsp;&nbsp;7.3 Measurement of the density distribution <br>&nbsp;&nbsp;&nbsp;7.4 Determination of the LINE SPREAD FUNCTION <br>&nbsp;&nbsp;&nbsp;7.5 Statement of compliance<br>8 Determination of FOCAL SPOT dimensions<br>&nbsp;&nbsp;&nbsp;8.1 Overview<br>&nbsp;&nbsp;&nbsp;8.2 Measurement and determination <br>&nbsp;&nbsp;&nbsp;8.3 Specified NOMINAL FOCAL SPOT VALUES <br>&nbsp;&nbsp;&nbsp;8.4 Statement of compliance <br>&nbsp;&nbsp;&nbsp;8.5 Marking of compliance<br>9 Determination of the MODULATION TRANSFER FUNCTION<br>&nbsp;&nbsp;&nbsp;9.1 Overview<br>&nbsp;&nbsp;&nbsp;9.2 Specified MODULATION TRANSFER FUNCTION<br>&nbsp;&nbsp;&nbsp;9.3 Calculation of the MODULATION TRANSFER FUNCTION <br>&nbsp;&nbsp;&nbsp;9.4 Evaluation of compliance of the MTF<br>&nbsp;&nbsp;&nbsp;9.5 Statement of compliance<br>10 FOCAL SPOT STAR RADIOGRAMS<br>&nbsp;&nbsp;&nbsp;10.1 Overview<br>&nbsp;&nbsp;&nbsp;10.2 Test equipment <br>11 STAR PATTERN RESOLUTION LIMIT<br>&nbsp;&nbsp;&nbsp;11.1 Overview<br>&nbsp;&nbsp;&nbsp;11.2 Specified STAR PATTERN RESOLUTION LIMIT<br>&nbsp;&nbsp;&nbsp;11.3 Measurement <br>&nbsp;&nbsp;&nbsp;11.4 Determination of the STAR PATTERN RESOLUTION LIMIT<br>&nbsp;&nbsp;&nbsp;11.5 Evaluation and statement of compliance<br>12 BLOOMING VALUE<br>&nbsp;&nbsp;&nbsp;12.1 Overview<br>&nbsp;&nbsp;&nbsp;12.2 Determination of the BLOOMING VALUE<br>&nbsp;&nbsp;&nbsp;12.3 Evaluation and statement of compliance<br>13 Alternate measurement methods<br>Annex A (informative) Alignment to the REFERENCE AXIS<br>Annex B (informative) Application of digital X-ray image <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;detectors for determination of the <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;FOCAL SPOT characteristics<br>Annex C (informative) Historical background<br>Bibliography<br>Index of defined terms

Abstract

Applies to FOCAL SPOTS in medical diagnostic X-RAY TUBE assemblies for medical use, operating at X-RAY TUBE VOLTAGES up to and including 200 kV. It describes the test methods for evaluating FOCAL SPOT characteristics and the means for indicating compliance.

General Product Information

Document Type Standard
Status Current
Publisher International Electrotechnical Committee
Committee TC 62

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