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Correction of head movements in positron emission tomography using point source tracking system: a simulation study

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Abstract

Aim

The motion of the head during brain positron emission tomography (PET) acquisitions has been identified as a source of artifact in the reconstructed image. In this study, a method is described to develop an image-based motion correction technique for correcting the post-acquisition data without using external optical motion-tracking system such as POLARIS.

Method

In this technique, GATE has been used to simulate PET brain scan using point sources mounted around the head to accurately monitor the position of the head during the time frames.

Result

The measurement of head motion in each frame showed a transformation in the image frame matrix, resulting in a fully corrected data set.

Conclusion

Using different kinds of phantoms and motions, the accuracy of the correction method is tested and its applicability to experimental studies is demonstrated as well.

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Authors and Affiliations

  1. Department of Nuclear Engineering and Physics, Amirkabir University of Technology (Tehran Polytechnic), P. O. BOX: 15875-4413, Tehran, Iran

    Babak Nazarparvar & Mojtaba Shamsaei

  2. Department of Medical Physics, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran

    Hossein Rajabi

Authors
  1. Babak Nazarparvar
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  2. Mojtaba Shamsaei
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  3. Hossein Rajabi
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Correspondence to Mojtaba Shamsaei.

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Nazarparvar, B., Shamsaei, M. & Rajabi, H. Correction of head movements in positron emission tomography using point source tracking system: a simulation study. Ann Nucl Med 26, 7–15 (2012). https://doi.org/10.1007/s12149-011-0532-9

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  • DOI: https://doi.org/10.1007/s12149-011-0532-9

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