Abstract:
:Combining positron emission tomography and MRI modalities typically requires using either conventional MRI with a MR-compatible positron emission tomography system or a modified MR system with conventional positron emission tomography. A feature of field-cycled MRI is that all magnetic fields can be turned off rapidly, enabling the use of conventional positron emission tomography detectors based on photomultiplier tubes. In this demonstration, two photomultiplier tube-based positron emission tomography detectors were integrated with a field-cycled MRI system (0.3 T/4 MHz) by placing them into a 9-cm axial gap. A positron emission tomography-MRI phantom consisting of a triangular arrangement of positron-emitting point sources embedded in an onion was imaged in a repeating interleaved sequence of ∼1 sec MRI then 1 sec positron emission tomography. The first multimodality images from the combined positron emission tomography and field-cycled MRI system show no additional artifacts due to interaction between the systems and demonstrate the potential of this approach to combining positron emission tomography and MRI.
journal_name
Magn Reson Medjournal_title
Magnetic resonance in medicineauthors
Bindseil GA,Gilbert KM,Scholl TJ,Handler WB,Chronik BAdoi
10.1002/mrm.22793subject
Has Abstractpub_date
2011-07-01 00:00:00pages
301-5issue
1eissn
0740-3194issn
1522-2594journal_volume
66pub_type
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