Toward the development of a micro crystal element scanner (MiCES): QuickPET II

Robert S. Miyaoka, Marie L. Janes, Byung Ki Park, Kisung Lee, Paul E. Kinahan, Tom K. Lewellen

Research output: Contribution to journalConference articlepeer-review

10 Citations (Scopus)

Abstract

This work reports on the development and the imaging characteristics of a single ring version of the micro crystal element scanner (MiCES). We refer to this evaluation system as quickPET II The key component of the system is our micro crystal element (MiCE) detectors. Each MiCE detector consists of a 22×22 array of polished 0.8×0.8×10 mm mixed lutetium silicate (MLS) crystals. The crystals are placed within a grid made of a highly reflective polymer film material. The grid optically isolates the crystals and additionally functions as a reflective wrap. The detector unit is directly coupled to a 6+6 cross-anode position sensitive PMT. The PMT signals are fed to a simple resistor network and front-end amplifier card that produces four (X+, X-, Y+, Y-) position and the summed energy signals. QuickPET II is an interim step to the development of the complete MiCES imaging system. It supports whole body static 18F imaging protocols. QuickPET II consists of 18 MiCE detector modules mounted as a single ring to a vertical gantry. The gantry can rotate +/- 20 degrees. Line source and mouse images have been acquired. Using filtered backprojection (FBP) the resolution for a reconstructed line source has been measured at 1.1 +/- 0.1 mm FWHM We have also developed a 2D OSEM reconstruction that includes a model of the system's 2D detector response function. Mouse heart images reconstructed with FBP, OSEM and OSEM with a model for detector blurring (OSEM(DB)) are provided. The final MiCES system will consist of four rings of detectors mounted on a fully rotating gantry; utilize a high bandwidth IEEE 1394a based acquisition system; and support whole body dynamic imaging protocols.

Original languageEnglish
Article numberM7-3
Pages (from-to)2242-2246
Number of pages5
JournalIEEE Nuclear Science Symposium Conference Record
Volume4
Publication statusPublished - 2003
Externally publishedYes
Event2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference - Portland, OR, United States
Duration: 2003 Oct 192003 Oct 25

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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