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Experimental scanner setup from miniPET II detector module
KTH, School of Technology and Health (STH), Medical Engineering.ORCID iD: 0000-0001-5919-3554
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2009 (English)In: 2008 IEEE Nuclear Science SYmposium Conference Record, 2009, 3121-3124 p.Chapter in book (Other academic)
Abstract [en]

The PET technique is widely used in human clinical studies and recent developments of image resolution has made it suitable for small animal research. The second generation of our PET scanner consists of 12 detector modules and has a field of view large enough to image mice and rats. Parameters of the incoming data are extracted by Digital Signal Processing in the detector modules and a System-on-Module is used to transmit the data through an Ethernet network for storage and reconstruction. The experimental scanner setup described in this paper was constructed in order to investigate the applicability of the developed detector modules in a full ring small animal PET camera. The preliminary results of the system are also presented.

Place, publisher, year, edition, pages
2009. 3121-3124 p.
Series
IEEE NUCL SCI CONF REC, ISSN 1082-3654
Identifiers
URN: urn:nbn:se:kth:diva-12066ISI: 000268656001250ISBN: 978-1-4244-2714-7 (print)OAI: oai:DiVA.org:kth-12066DiVA: diva2:300882
Note
QC20100710Available from: 2010-03-01 Created: 2010-03-01 Last updated: 2010-07-20Bibliographically approved
In thesis
1. Software Solutions for Nuclear Imaging Systems in Cardiology, Small Animal Research and Education
Open this publication in new window or tab >>Software Solutions for Nuclear Imaging Systems in Cardiology, Small Animal Research and Education
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The sensitivity for observing physiological processes makes nuclear imaging an important tool in medical diagnostics. Different types of nuclear imaging modalities, with emphasis on the software components and image reconstructions, are presented in this thesis:  the Cardiotom for myocardial heart studies at the Karolinska University Hospital, the small animal Positron Emission Tomograph (PET) scanners for research and the SPECT, PET, spiral CT and Cardiotom demonstrators for the Royal Institute of Technology medical imaging laboratory.

A modular and unified software platform has been developed for data representation, acquisition, visualization, reconstruction and presentation of the programs of the imaging devices mentioned above. The high performance 3D ML-EM and OS-EM iterative image reconstruction methods are implemented both on Cardiotom and miniPET scanners.

As a result, the in-slice resolution of the first two prototypes of the Cardiotom today is the same as the formerly used filtered back-projection, however the in-depth resolution is considerably increased. Another improvement due to the new software is the shorter time that is required for data acquisition and image reconstruction. The new electronics with the newly developed software ensure images for medical diagnosis within 10 minutes from the start ofthe examination. The first system from the standardized production of the Cardiotom cameras is in the test phase.

The performance parameters (sensitivity, spatial and energy resolution, coincidence time resolution) of the full ring mini PET camera are comparable to other small animal PETsystems.

Place, publisher, year, edition, pages
Stockholm: KTH, 2010. 75 p.
Series
Trita-STH : report, ISSN 1653-3836 ; 2010:1
National Category
Biomedical Laboratory Science/Technology
Identifiers
urn:nbn:se:kth:diva-12069 (URN)
Public defence
2010-03-19, KTH-Flemingsberg, Sal 3-221, Alfred Nobels Allé 10, Stockholm, 09:15 (English)
Opponent
Supervisors
Note
QC20100721Available from: 2010-03-02 Created: 2010-03-01 Last updated: 2010-07-21Bibliographically approved

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Valastyán, Iván

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