ASTM E1695 Computed Tomography (CT) System Performance

The spatial resolution and contrast sensitivity of X-ray and γ- ray computed tomography (CT) volumes are determined usin g the standard test method ASTM E1695. The result is determined by looking at the CT volume of a uniform cylinder of material. The values expressed in SI units should be considered standard.... Read More

  • Average 30% Cost
    Savings

  • 100% Confidentiality
    Guarantee

  • Free, No-obligation
    Consultation

  • 100% Customer
    Satisfaction

    TRUSTED BY ENGINEERS FROM

    Scope:

    ASTM E1695 test method evaluates and summarizes the overall performance of a CT system. Separate documents, especially Guide E1000, Practice E2737, and Practice E2002, cover performance tests of system components such as X-ray tubes, gamma sources, and detectors and should be consulted for additional system analysis. ASTM E1695 allows the buyer or seller of CT systems or services, or both, to assess and specify the spatial resolution and contrast sensitivity, as well as system stability and performance acceptability.

    Procedure:

    The phantom is installed on the CT system according to ASTM E1695. The parameters for data capture should be identical to those used for inspection object scans. One slice is captured and evaluated in a fan-beam CT. Three slice planes intercept the phantom cylinder at different points of the detector in a cone-beam CT. Each plane’s MTF (Modulation Transfer Function) and CDF (Contrast Discrimination Function) are measured separately.

    Specimen size

    In ASTM E1695, the cylinder’s diameter must be large enough for the reconstruction to take up at least 250 voxels in the final image. The cylinder’s height should be 80 percent of the detector’s height.

    Result

    For ASTM E1695, the report outcome should include all relevant data that influences the MTF and CDF measurements. The result report represents the MTF and the CDF graphically.

    Conclusion:

    ASTM E1695 test method evaluates and summarizes the overall performance of a CT system.

    OUR SERVICES

    Core Materials Testing Services

    Metrology

    A variety of microscopy and spectroscopy tools available for precise measurements from the nano to the meter scale.

    Metrology Testing Services POPULAR TESTS:

    TEM SIMS Profilometry

    Materials Testing

    ASTM and ISO standard and custom chemical, mechanical, thermal, corrosion tests, etc. for all materials metals, ceramic or polymers.

    Materials Testing Services POPULAR TESTS:

    Nondestructive Testing Electrical Testing Chemistry Analysis

    Product Testing

    Thousands of tests for product quality and reliability under heat, humidity, temperature shock, vibration, drop, electrostatic discharge.

    Product Testing Services POPULAR TESTS:

    Vibration Testing Humidity Testing Accelerated Aging

    Looking for Material Testing?

    We have already delivered 10000+ Material Test results to top companies

      Send us a request

        Process for testing
        •  
          STEP 01

          You share material and testing requirements with us

        •  
          STEP 02

          You ship your sample to us or arrange for us to pick it up.

        •  
          STEP 03

          We deliver the test report to your email.

          Let’s work together!

          Share your testing requirements with us and we will be happy to assist you.

          ddd Just share your testing requirements and leave the rest on us!
          • Quick Turnaround and Hasslefree process
          • Confidentiality Guarantee
          • Free, No-obligation Consultation
          • 100% Customer Satisfaction

            ddd

            Let us combine our capabilities to achieve success!!

              idea icon
              Want to connect with an expert before you leave?