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표준
판매
ASTM E1695-95(2013)
Standard Test Method for Measurement of Computed Tomography (CT) System Performance- 발행일 : 2013-06-01
- 발행기관 : ASTM
상세정보
분야 | 03.03 : 비 파괴검사 (Ⅰ) |
---|---|
적용범위 | 1.1 This test method provides instruction for determining the spatial resolution and contrast sensitivity in X-ray and γ-ray computed tomography (CT) images. The determination is based on examination of the CT image of a uniform disk of material. The spatial resolution measurement is derived from an image analysis of the sharpness at the edge of the disk. The contrast sensitivity measurement is derived from an image analysis of the statistical noise at the center of the disk. 1.2 This test method is more quantitative and less susceptible to interpretation than alternative approaches because the required disk is easy to fabricate and the analysis is immune to cupping artifacts. This test method may not yield meaningful results if the disk image occupies less than a significant fraction of the field of view. 1.3 This test method may also be used to evaluate other performance parameters. Among those characteristics of a CT system that are detectable with this test method are: the mid-frequency enhancement of the reconstruction kernel, the presence (or absence) of detector crosstalk, the undersampling of views, and the clipping of unphysical (that is, negative) CT numbers (see Air Force Technical Report WL-TR-94-40212). It is highly likely that other characteristics as well can be detected with this test method. |
국제분류(ICS)코드 | |
페이지수 | 5 |
Edition | 95(2013) |
이력정보
No. | 표준번호 | 표준명 | 발행일 | 상태 |
---|---|---|---|---|
1 | ASTM E1695-20 REDLINE상세보기 | Standard Test Method for Measurement of Computed Tomography (CT) System Performance | 2020-06-01 | 표준 |
2 | ASTM E1695-20상세보기 | Standard Test Method for Measurement of Computed Tomography (CT) System Performance | 2020-06-01 | 표준 |
3 | ASTM E1695-95(2013)상세보기 | Standard Test Method for Measurement of Computed Tomography (CT) System Performance | 2013-06-01 | 표준 |
4 | ASTM E1695-95(2006)e1상세보기 | Standard Test Method for Measurement of Computed Tomography (CT) System Performance | 2006-12-01 | 구판 |
5 | ASTM E1695-95상세보기 | Standard Test Method for Measurement of Computed Tomography (CT) System Performance | 2001-01-01 | 구판 |
6 | ASTM E1695-95(2001)상세보기 | Standard Test Method for Measurement of Computed Tomography (CT) System Performance | 2001-01-01 | 구판 |
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