Towards continuous-to-continuous 3D imaging in the real world

L. Caucci, Z. Liu, A. K. Jha, H. Han, L. R. Furenlid, H. H. Barrett

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Imaging systems are often modeled as continuous-to-discrete mappings that map the object (i.e. a function of continuous variables such as space, time, energy, wavelength, etc) to a finite set of measurements. When it comes to reconstruction, some discretized version of the object is almost always assumed, leading to a discrete-to-discrete representation of the imaging system. In this paper, we discuss a method for single-photon emission computed tomography (SPECT) imaging that avoids discrete representations of the object or the imaging system, thus allowing reconstruction on an arbitrarily fine set of points.

Original languageEnglish (US)
Article number185007
JournalPhysics in Medicine and Biology
Issue number18
StatePublished - Sep 17 2019


  • emission tomography
  • GPU
  • graphics processing units
  • MLEM
  • reconstruction

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging


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