The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index.
Performance evaluation of the MOLECUBES β -CUBE—a high spatial resolution and high sensitivity small animal PET scanner utilizing monolithic LYSO scintillation detectors
Open accessAbstract
The MOLECUBES β -CUBE scanner is the newest amongst commercially available preclinical PET scanners for dedicated small animal imaging. The scanner is compact, lightweight and utilizes a small footprint to facilitate bench-top imaging. It can be used individually, or in combination with the X-CUBE CT scanner, which provides the ability to perform all necessary PET data corrections and provide fully quantitative PET images. The PET detector comprises of an 8 mm thick monolithic LYSO scintillator read-out by an array of 3 mm × 3 mm Hamamatsu silicon photomultipliers. The monolithic scintillator provides the ability to measure depth-of-interaction which aids in the development of such a compact scanner. With a scanner diameter of 7.6 cm and axial length of 13 cm it is suitable for imaging both whole-body mice and rats. This paper presents the design and imaging performance of the β -CUBE scanner. NEMA NU4-2008 characterization and a variety of phantom and animal imaging studies to demonstrate the quantitative imaging performance of the PET scanner are presented. Spatial resolution of 1 mm is measured with a filtered-back projection reconstruction algorithm at the center of the scanner and DOI measurement helps maintain the excellent spatial resolution over the entire imaging FOV. An absolute peak sensitivity of 12.4% is measured with a 255–765 keV energy window. The scanner demonstrates good count-rate performance, with a peak NEC of 300 kcps and 160 kcps measured with ~900 µ Ci in the NEMA mouse and rat phantoms, respectively. Imaging data with the NEMA image quality phantom and Micro Derenzo phantoms demonstrate the ability to achieve good image quality and accurate quantitative data. Image uniformity of 7.4% and spill-over ratio of 8% were measured. The superior spatial resolution, excellent energy resolution and sensitivity also provide superior contrast recovery, with ~70% recovery for the 2 mm rods. While current commercial preclinical PET scanners have spatial resolution in the 1–2 mm range, the 1 mm 3 volumetric resolution presents significant improvement over current commercially available preclinical PET scanners. In combination with the X-CUBE scanner it provides the ability to perform fully quantitative imaging with spatially co-registered high-resolution 3D PET-CT images.
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“In all cases, images were corrected for radionuclide decay, tissue attenuation, detector dead-time loss, and photon scatter according to the manufacturer’s methods (Krishnamoorthy et al., 2018).”
From Plcg2M28L Interacts With High Fat/High Sugar Diet to Accelerate Alzheimer’s Disease-Relevant Phenotypes in Mice (2022) · cites this paper as Krishnamoorthy et al., 2018
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A novel, SiPM-array-based, monolithic scintillator detector for PET
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State of the art in total body PET
Vandenberghe, S., Moskal, P., & Karp, J. S. (2020) · EJNMMI Physics · doi:10.1186/s40658-020-00290-2 · Cited by 394
Self-citationPhysics and technology of time-of-flight PET detectors
Schaart, D. R. (2021) · Physics in Medicine and Biology · doi:10.1088/1361-6560/abee56 · Cited by 147
Evolution of PET Detectors and Event Positioning Algorithms Using Monolithic Scintillation Crystals
González-Montoro, A., González, A. J., Pourashraf, S., Miyaoka, R. S., Bruyndonckx, P., Chinn, G., Pierce, L. A., & Levin, C. S. (2021) · IEEE Transactions on Radiation and Plasma Medical Sciences · doi:10.1109/trpms.2021.3059181 · Cited by 113
Update on latest advances in time-of-flight PET
Surti, S., & Karp, J. S. (2020) · Physica Medica · doi:10.1016/j.ejmp.2020.10.031 · Cited by 96
Self-citationSmall animal PET: a review of what we have done and where we are going
Miyaoka, R. S., & Lehnert, A. L. (2020) · Physics in Medicine and Biology · doi:10.1088/1361-6560/ab8f71 · Cited by 92
Metadata
- Authors
- Krishnamoorthy, S., Blankemeyer, E., Mollet, P., Surti, S., Van Holen, R., & Karp, J. S.
- Affiliations
- University of Pennsylvania (US)
- Corresponding author
- Krishnamoorthy, Srilalan
- Venue
- Physics in Medicine & Biology
- Publisher
- IOP Publishing
- Published
- 2018-07-27
- Volume
- 63
- Issue
- 15
- Pages
- 155013
- ISSN
- 0031-9155 (ISSN-L)
- 1361-6560
- PMC
- PMC6145835
- OpenAlex
- W2810955814
- Cited by
- 141
- References
- 44
- Citations by year
- 2026: 8 · 2025: 14 · 2024: 19 · 2023: 13 · 2022: 19 · 2021: 28 · 2020: 22 · 2019: 14 · 2018: 4
- FWCI
- 11.75
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Licence
- Locations
- Physics in Medicine and Biology (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health (R01-CA113941)
- Topics
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Medical Imaging Techniques and Applications
- Physical Sciences › Physics and Astronomy › Radiation › Radiation Detection and Scintillator Technologies
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Cardiac Imaging and Diagnostics
- Keywords
- small animal imaging, silicon photomultipliers, spatial resolution, count rate performance, PET quantification, PET/CT, image quality, contrast recovery, rats and mice
- MeSH terms
- Animals, Scintillation Counting, Sensitivity and Specificity, Phantoms, Imaging, Positron-Emission Tomography, Mice, Rats
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