—   —  —  62494-1-2013 . . 1.


62494-1-2013 . . 1.

62494-1-2013 . . 1.

62494-1-2013
" . . 1. "
(. 7 2013 . N 74-)

Medical electrical equipment. Exposure index of digital X-ray imaging systems. Part 1. Definitions and requirements for general radiography

- 1 2015 .

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4 62494-1:2008 " . . 1. " (IEC 62494-1:2008 "Medical electrical equipment - Exposure index of digital X-ray imaging systems - Part 1: Definitions and requirements for general radiography").

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/ 60788:2004 . (IEC/TR 60788:2004, Medical electrical equipment - Glossary of defined terms)

3

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3.1 (CALIBRATION CONDITIONS): , .

3.2 (CALIBRATION FUNCTION): .

3.3 (DETECTOR SURFACE): , .

- ( ), - .

[ 62220-1-2:2007, 3.3]

3.4 DI (DEVIATION INDEX; DI): .

3.5 (DIGITAL X-RAY IMAGING DEVICE): , , , , (DN, CDU) .

[ 62220-1:2003, 3.5]

- , , .

3.6 (DIGITAL X-RAY IMAGING SYSTEM): , , , , , .

3.7 El (EXPOSURE INDEX; El): , .

- , , ( ).

3.8 (IMAGE RECEPTOR AIR KERMA; ): ( ).

3.9 (INVERSE CALIBRATION FUNCTION): .

3.10 DN (ORIGINAL DATE; DN): , .

[ 62220-1:2003, 3.12]

- , , , .

3.11 (RAW DATA): , - .

[ 62220-1:2003, 3.14]

3.12 (RELEVANT IMAGE REGION): , , , .

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3.13 EIT (TARGET EXPOSURE INDEX; EIT): .

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3.14 V (VALUE OF INTEREST; V): .

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4.3

EI (1)

EI=c0q(v),

(1)

q (v) - , 4.6 0 = 100 -1.

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4.4

EI (2)

EI=c0KCAL,

(2)

KCAL - 0 = 100 -1.

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4.5

f () KCAL VCAL . f () (3)

VCAL = f(KCAL),

(3)

VCAL - , , 10% . , . f () .

, , .

4.6

g (VCAL) (4)

KCAL=g(VCAL)=f-1(VCAL).

(4)

(4) .

g (V) (1) .

, , . 20% ( 2).

- "" " 2" [2].

4.7

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, (5)

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EI/EIT,

(5)

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[1] Radiological protection and safety in medicine: a report of the International Commission on Radiological Protection. Ann ICRP 1996;26(2), pp. 1 - 47 [Published correction appears in Ann ICRP 1997;27(2):61]

[2] ISO/IEC GUIDE 98, Guide to the expression of uncertainty in measurement (GUM)

[3] Samei, E., Seibert, JA., Willis, C, Flynn, M., Mah, E., Junck, K. Performance evaluation of computed radiography systems. Med Phys, 2001, 24, pp. 361 - 371

[4] Van Metter, R. and Yorkston, J. Toward a universal definition of speed for digitally acquired projection images. Proc SPIE, 2005, 5745, pp. 442 - 457

[5] Van Metter R. and Yorkston, J.. Applying a Proposed Definition for Receptor Dose to Digital Projection Images. Proc SPIE, 2006, 6142, pp. 426 - 444

[6] IEC 60601-1:2005, Medical electrical equipment - Part 1: General requirements for basic safety and essential performance

[7] IEC 60601-2-43, Medical electrical equipment - Part 2-43: Particular requirements for the safety of X-ray equipment for interventional procedures

[8] IEC 62220-1, Medical electrical equipment - Characteristics of digital X-ray imaging devices - Part 1: Determination of the detective quantum efficiency

[9] IEC 62220-1-2, Medical electrical equipment - Characteristics of digital X-ray imaging devices - Part 1-2: Determination of the detective quantum efficiency - Detectors used in mammography

[10] ISO 9236-1, Optics and optical instruments - Optical transfer function - Application - Part 1: Interchangeable lenses for 35 mm still cameras

60788 rm - "36-46"

60788 rm - "36-02"

60788 rm - "13-11"

3.8

60788 rm - "35-02"

3.13

3.10

3.2

60788 rm - "13-28"

3.11

60788 rm - "12-09"

3.9

60601-2-43, 2.106

3.12

60788 rm - "32-06"

60601-1, 3.73

60788 rm - "37-15"

3.3

60788 rm - "37-16"

60788 rm - "37-05"

60788 rm - "32-29"

60788 rm - "32-61"

3.4

3.7

3.14

60788 rm - "13-42"

3.1

3.5

3.6




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