Literature DB >> 7700198

Use of a magnetic field to increase the spatial resolution of positron emission tomography.

B E Hammer1, N L Christensen, B G Heil.   

Abstract

Detector geometry, spatial sampling, and more fundamentally, positron range and noncollinearity of annihilation photon emission define Positron Emission Tomography (PET) spatial resolution. In this paper, a strong magnetic field is used to constrain positron travel transverse to the field. Measurement of the spread function from a 500 microns diameter 68Ga impregnated resin bead shows a squeezing of the full width at half maximum (FWHM) by a factor of 1.0, 1.22, 1.42, and 2.05, at 0, 4.0, 5.0, and 9.4 Tesla, respectively. The full width at tenth maximum (FWTM) decreases by a factor of 1.0, 1.73, 2.09, and 3.20, at 0, 4.0, 5.0, and 9.0 Tesla, respectively. Acquiring a PET image in a magnetic field should significantly reduce resolution loss due to positron range.

Mesh：

Year:  1994        PMID： 7700198     DOI： 10.1118/1.597178

Source DB:  PubMed          Journal:  Med Phys        ISSN： 0094-2405            Impact factor:   4.071


  10 in total

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Review 4.  Quantitative Rodent Brain Receptor Imaging.

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Review 6.  Positron emission tomography-magnetic resonance imaging: technical review.

Authors:  Raymond F Muzic; Frank P DiFilippo
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7.  The future of hybrid imaging-part 3: PET/MR, small-animal imaging and beyond.

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8.  Effects of magnetic fields of up to 9.4 T on resolution and contrast of PET images as measured with an MR-BrainPET.

Authors:  N Jon Shah; Hans Herzog; Christoph Weirich; Lutz Tellmann; Joachim Kaffanke; Liliana Caldeira; Elena Rota Kops; Syed M Qaim; Heinz H Coenen; Hidehiro Iida
Journal:  PLoS One       Date:  2014-04-22       Impact factor: 3.240

9.  Design, Implementation, and Evaluation of a Head and Neck MRI RF Array Integrated with a 511 keV Transmission Source for Attenuation Correction in PET/MR.

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10.  Evaluations of the performances of PET and MRI in a simultaneous PET/MRI instrument for pre-clinical imaging.

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  10 in total

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