University of Twente Student Theses


Optimisation of the whole-body SPECT protocol

Abbing, J.R. and Boonstra, S. and Cnossen, S. and Koenders, S.S. and Stoker, N.H. (2015) Optimisation of the whole-body SPECT protocol.

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Abstract:Introduction: In this study the possibilities for developing a faster whole-body SPECT protocol were examined Method: A phantom study was performed using the Jaszczak and NEMA phantom. A two headed Siemens Symbia T16 scanner with a Low Energy High Resolution (LEHR) collimator was used for the data acquisition. Images obtained with the step-and-shoot mode (SSM) were compared with the SPECT images obtained with continuous rotation mode (CM). The images were objective and subjective evaluated. During the objective evaluation three parameters were evaluated: spatial resolution using the modulation transfer function (MTF), signal to noise ratio (SNR) and contrast. For the subjective evaluation employees of the Department of Nuclear Medicine and Molecular Imaging (NMMI) were asked to scale the images on sharpness, contrast and total quality. Results: A reduction in scan time of 75% was achieved using CM instead of SSM. CM method with 40 views and 12 seconds per view and the CM method with 53 views and 9 seconds per view came out best in respectively the objective and subjective evaluation. Conclusion: The acquisition protocol of the whole-body SPECT for patients with suspected bone metastases can be optimised with CM which results in reduced scan time.
Item Type:Essay (Bachelor)
University Medical Centre Groningen, Groningen, Nederland
Faculty:TNW: Science and Technology
Subject:44 medicine
Programme:Technical Medicine BSc (50033)
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