Simultaneous MR-PET

Siemens MR-PET (Biograph mMR)

Monash Biomedical Imaging operates Australia’s only research-dedicated Siemens Biograph mMR scanner, which is capable of simultaneous magnetic resonance (MR) and positron emission tomography (PET) imaging.

The MR-PET scanner allows for concurrent acquisition of morphology, function, and metabolism. Its key features include:

  • Sensitivity that is almost 40% better than PET-CT
  • Industry-leading MR image quality for off-centre imaging, fat saturation and spectroscopy
  • Improved clinical outcomes with high definition-PET, giving benchmark PET image quality using measured Point Spread Functions, producing images with improved uniformity, higher resolution and more contrast
  • 32" BOLDScreen for stimuli presentation.

Detailed features

Magnet system

  • 3 Tesla with 60cm bore diameter, short bore and high homogeneity
  • TrueForm magnet design, producing a cylindrically optimised homogeneity volume that results in better image quality by reducing unusable edges in the images, as well as better fat saturation for the whole area covered in the scan.

MR gradient system

  • Actively shielded whole-body gradient coil system
  • Extremely low eddy currents
  • Gradient coil length 159cm, optimised for gradient linearity
  • Excellent spatial and temporal resolution
  • Patient-specific shimming
  • Active shim via 3 linear channels with 20 coils
  • Combined with 5 additional non-linear second order channels with 32 coils for advanced high order shim
  • Maximum acoustic noise level is 118 dB(A)


PET detectors

  • Crystal material - LSO
  • Crystal elements per block - 64
  • Total detector blocks - 448
  • Total number of crystal elements - 28,672
  • Image planes - 127

PET offline reconstruction

  • Provides static and whole-body PET reconstruction capabilities outside the context of an acquisition, from saved PET raw data

Application suites

The Biograph mMR Application Suites provides a complete range of optimised examinations for all regions. From simultaneous MR and PET to individual MR or PET exams, excellent head-to-toe imaging can be accomplished with the sequences and features included in the Application Suites:

  • Neuro Suite
  • Angio Suite
  • Cardiac Suite
  • Body Suite
  • Onco Suite
  • Breast Suite
  • Ortho Suite
  • Pediatric Suite
  • Scientific Suite