Motion correction for jPET-D4: improvement of measurement accuracy with a solid marker

We proposed a unique motion detection method that can be used for motion correction in brain PET imaging. This method uses a specially-designed solid marker that enables position and angle (direction) measurement with one optical movie camera. Therefore, it is applicable to a long, narrow patient port space in which a two-camera system cannot be installed. By refining machining accuracy of the solid marker, angle measurement accuracy was significantly improved. As a result, we obtained sufficient measurement accuracies in the angles as well as in the trans-axial positions. In addition, we have been developing a model to calculate axial positions from measured trans-axial positions and angles. As a result of a multivariate analysis of measured motion tracking data, we found that sufficient accuracy can be obtained under well-controlled experimental conditions. In order to realize head motion correction for jPET-D4, we are also considering marker attaching, camera calibration, device installation, and correction algorithms.

[1]  H. Murayama,et al.  Calibration procedure for a DOI detector of high resolution PET through a Gaussian mixture model , 2004, IEEE Transactions on Nuclear Science.

[2]  M. S. Atkins,et al.  Compensation methods for head motion detected during PET imaging , 1996 .

[3]  Keishi Kitamura,et al.  DOI-PET image reconstruction with accurate system modeling that reduces redundancy of the imaging system , 2003 .

[4]  Roger Fulton,et al.  Correction for head movements in positron emission tomography using an optical motion tracking system , 2000 .

[5]  Keishi Kitamura,et al.  DOI-PET image reconstruction with accurate system model reducing redundancy of imaging system , 2002, 2002 IEEE Nuclear Science Symposium Conference Record.

[6]  B. Lopresti,et al.  Implementation and performance of an optical motion tracking system for high resolution brain PET imaging , 1998, 1998 IEEE Nuclear Science Symposium Conference Record. 1998 IEEE Nuclear Science Symposium and Medical Imaging Conference (Cat. No.98CH36255).

[7]  H. Murayama,et al.  Design of a depth of interaction detector with a PS-PMT for PET , 1999, 1999 IEEE Nuclear Science Symposium. Conference Record. 1999 Nuclear Science Symposium and Medical Imaging Conference (Cat. No.99CH37019).

[8]  K. Kitamura,et al.  Head motion correction for jPET-D4 , 2004, IEEE Symposium Conference Record Nuclear Science 2004..

[9]  Roger Fulton,et al.  The design and implementation of a motion correction scheme for neurological PET. , 2003, Physics in medicine and biology.