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:

148
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Download:

147
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Cites:

1

Information Journal Paper

Title

Geometric distortion evaluation of magnetic resonance images by a new large field of view phantom for magnetic resonance based radiotherapy purposes

Pages

  733-742

Abstract

 Background: The magnetic resonance imaging (MRI)-based radiotherapy planning method have been considered in recent years because of the advantages of MRI and the problems of planning with two images modality. The first step in MRI-based radiotherapy is to evaluate magnetic resonance (MR) images Geometric distortion. Therefore, the present study aimed to evaluate system related Geometric distortion by a new large field of view phantom. Materials and Methods: A homemade phantom with Perspex sheets and plastic pipes containing water was built for evaluating MR images distortion. The phantom size is 48×48×37 cm3 and includes 325 water pipes. The study evaluated four different protocols from a 60 cm bore MAGNETOM® Symphony Syngo 1. 5 T (Siemens). Results: It was found that the amount of distortion for all protocols is under 2 mm for the radial distances less than 10 cm (field of view (FOV) = 20 cm), but distortion increased in radial distances greater than 10 cm, and reached about 5 cm for radial distances greater than 25 cm. Conclusion: Geometric distortion of each MR scanner has been shown to be dependent on the radio frequency (RF) sequence pulse (Spin echo or Gradient echo) and image parameters (echo time (TE), repetition time (TR), and receiver band-width)). The Geometric distortion could be ignored for the FOV<20 cm (for the head region), and must be evaluated and corrected for more FOVs before the MR only radiotherapy.

Multimedia

  • No record.

    • Cites

    References

  • No record.

    • Cite

    APA: Copy

    ROSTAMI, A., NASERI, SH., MOMENNEZHAD, M., ZARE, H., ANVARI, K., & Sayah Badkhor, H.R.. (2020). Geometric distortion evaluation of magnetic resonance images by a new large field of view phantom for magnetic resonance based radiotherapy purposes. INTERNATIONAL JOURNAL OF RADIATION RESEARCH, 18(4), 733-742. SID. https://sid.ir/paper/770806/en

    Vancouver: Copy

    ROSTAMI A., NASERI SH., MOMENNEZHAD M., ZARE H., ANVARI K., Sayah Badkhor H.R.. Geometric distortion evaluation of magnetic resonance images by a new large field of view phantom for magnetic resonance based radiotherapy purposes. INTERNATIONAL JOURNAL OF RADIATION RESEARCH[Internet]. 2020;18(4):733-742. Available from: https://sid.ir/paper/770806/en

    IEEE: Copy

    A. ROSTAMI, SH. NASERI, M. MOMENNEZHAD, H. ZARE, K. ANVARI, and H.R. Sayah Badkhor, “Geometric distortion evaluation of magnetic resonance images by a new large field of view phantom for magnetic resonance based radiotherapy purposes,” INTERNATIONAL JOURNAL OF RADIATION RESEARCH, vol. 18, no. 4, pp. 733–742, 2020, [Online]. Available: https://sid.ir/paper/770806/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