Technical and clinical assessment of latest technology SiPM integrated digital PETCT scanner

Singh, M.K.; Mohan, P.; Mahajan, H.; Kaushik, C.

Abstract

Objective
The aim of this study was to conduct a technical and clinical evaluation of a Silicon Photomultiplier (SiPM) integrated digital Positron Emission Tomography – Computed Tomography (PETCT) Scanner using National Electrical Manufacturers Association (NEMA) NU 2- 2018 standards.
Methods
System sensitivity was measured by using a NEMA sensitivity phantom. Scatter fraction, count-rate performance, accuracy of count loss, and timing resolution were all computed. Clinical images were acquired and image quality was assessed and compared with published studies.
Results
At 1 cm, tangential, radial, and axial spatial resolutions were 3.02 mm, 3.02 mm, and 2.73 mm at full width half maximum (FWHM), respectively. Sensitivity at centre and 10 cm was 10.359 cps/kBq and 9.741 cps/kBq, respectively. The timing resolution was measured at 372 ps.
Conclusion
The digital PETCT exhibits a high-spatial resolution and a superior timing resolution, which advances the diagnostic ability to detect small lesions and boosts the diagnostic confidence.
Implications for practice
Increases clinical relevance by improving the ability to detect and differentiate tiny or low-contrast lesions without compromising radiopharmaceutical dose or overall scan time.

Citation

Singh, M., Mohan, P., Mahajan, H., & Kaushik, C. (2023). Technical and clinical assessment of latest technology SiPM integrated digital PETCT scanner. Radiography, 29(4), 705-711. https://doi.org/10.1016/j.radi.2023.04.020

• Journal Article Type: Article
• Acceptance Date: Apr 26, 2023
• Online Publication Date: May 13, 2023
• Publication Date: 2023-07
• Deposit Date: Jun 1, 2023
• Publicly Available Date: Nov 8, 2023
• Journal: Radiography
• Print ISSN: 1078-8174
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 29
• Issue: 4
• Pages: 705-711
• DOI: https://doi.org/10.1016/j.radi.2023.04.020
• Keywords: Radiology, Nuclear Medicine and imaging; Podiatry