مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

video

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

sound

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Persian Version

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View:

197
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Download:

153
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Cites:

Information Journal Paper

Title

NEW APPROACH FOR CALIBRATION OF PIXELATED SCINTILLATION DETECTORS OF INTRAOPERATIVE GAMMA CAMERAS

Pages

  34-42

Abstract

 Introduction: SURGEOSIGHT is a dedicated intra-operative hand-held gamma camera designed and manufactured by our team to be used for lymphoscintigraphy. Although conventional gamma cameras are widely used, they lack the capability of the sentinel lymph node (SLN) imaging in the operation room. Like conventional gamma cameras it is necessary to calibrate SURGEOSIGHT for linearity distortion, energy and flood correction. Our main objective in this study is to develop and implement three techniques for linearity, energy and UNIFORMITY CORRECTIONs.Methods: The camera is made up of a pixelated cesium iodide (sodium-activated) (CsI (Na)) scintillation crystal with 1 × 1 mm2 element size along with a Hamamatsu H8500 flat-panel multi-anode (64 channels) photomultiplier tube. All triple corrections required lookup tables (LUTs). To generate all three LUTs, one uncalibrated acquisition is necessary. LINEARITY DISTORTION CORRECTION was based on localization of physical pixels of crystal and thin plate spline interpolation to estimate the amount of distortion. ENERGY CORRECTION LUT was simply a photo-peak map of incoming events which was estimated using SELF-ORGANIZING MAP technique.Results: The results showed improvements qualitatively and quantitatively. The extrinsic energy resolution was enhanced from 50% to about 20.6%. Integral uniformity and the differential uniformity, after UNIFORMITY CORRECTION, in useful field-of-view (UFOV) was measured 9.5% and 4.5%, respectively.Conclusion: Results substantiated that the correction techniques guarantee uniform and accurate output of the SURGEOSIGHT which is desirable for intra-operative localization of the sentinel lymph nodes in breast cancer and also for imaging of other superficial tumors.

Cites

  • No record.

    • References

  • No record.

    • Cite

    APA: Copy

    AKBARZADEH, AFSHIN, SABA, VALIALLAH, & AY, MOHAMMAD REZA. (2017). NEW APPROACH FOR CALIBRATION OF PIXELATED SCINTILLATION DETECTORS OF INTRAOPERATIVE GAMMA CAMERAS. IRANIAN JOURNAL OF NUCLEAR MEDICINE, 25(1 (SERIAL NUMBER 47)), 34-42. SID. https://sid.ir/paper/715322/en

    Vancouver: Copy

    AKBARZADEH AFSHIN, SABA VALIALLAH, AY MOHAMMAD REZA. NEW APPROACH FOR CALIBRATION OF PIXELATED SCINTILLATION DETECTORS OF INTRAOPERATIVE GAMMA CAMERAS. IRANIAN JOURNAL OF NUCLEAR MEDICINE[Internet]. 2017;25(1 (SERIAL NUMBER 47)):34-42. Available from: https://sid.ir/paper/715322/en

    IEEE: Copy

    AFSHIN AKBARZADEH, VALIALLAH SABA, and MOHAMMAD REZA AY, “NEW APPROACH FOR CALIBRATION OF PIXELATED SCINTILLATION DETECTORS OF INTRAOPERATIVE GAMMA CAMERAS,” IRANIAN JOURNAL OF NUCLEAR MEDICINE, vol. 25, no. 1 (SERIAL NUMBER 47), pp. 34–42, 2017, [Online]. Available: https://sid.ir/paper/715322/en

    Related Journal Papers

  • No record.

    • Related Seminar Papers

  • No record.

    • Related Plans

  • No record.

    • Recommended Workshops






    Move to top
    telegram sharing button
    whatsapp sharing button
    linkedin sharing button
    twitter sharing button
    email sharing button
    email sharing button
    email sharing button
    sharethis sharing button