Top-Level Design and Simulated Performance of the First Portable CT-MR Scanner

Yuting Peng, Mengzhou Li, Jace Grandinetti, Ge Wang, Xun Jia

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Multi-modality imaging hardware can be integrated in a single gantry to collect diverse datasets for complementary information and spatiotemporal correlation, with excellent examples including PET-CT and PET-MRI. However, there is no CT-MRI prototype up to today due to technical challenges and associated cost-benefit considerations. Thanks to the rapid development of medical imaging, it becomes feasible now to integrate cost-effective CT and MRI imagers together for portability, popularity, and point of care. In this paper, we present the top-level design of the first portable CT-MRI system and evaluate its imaging performance via realistic numerical simulations. In this CT-MRI system, the magnet made of two neodymium (NdFeB) rings of about 40.0 cm radius forms a magnetic field of about 57 mT at the isocenter and has a gap of 11.3 cm to accommodate the rotating CT gantry. The targeted MR imaging field of view (FOV) is a sphere of 15 cm in diameter and that of CT is approximately 20 cm diameter in axial direction and 5 cm in longitudinal direction. Our results show a great potential of such a hybrid system. The proposed CT-MRI system will be valuable in applications such as imaging in underdeveloped countries, disaster scenes and battle fields.

Original languageEnglish (US)
Pages (from-to)102325-102333
Number of pages9
JournalIEEE Access
StatePublished - 2022


  • Computed tomography (CT)
  • magnetic resonance imaging (MRI)
  • multi-modality imaging

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)
  • Electrical and Electronic Engineering


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