ArticleZeitschrift fur medizinische Physik2025
Impact of the maximum ring difference on image quality and noise characteristics of a total-body PET/CT scanner.
Article in Zeitschrift fur medizinische Physik, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- Large axial field of view PET/CT - Not just a longer PET gantry.Zeitschrift fur medizinische Physik · 2026Review
- Beyond image quality: Patient experience with long-axial field-of-view and standard PET/CT systems.European journal of nuclear medicine and molecular imaging · 2026Article
- Exploring extended [European journal of nuclear medicine and molecular imaging · 2026Article
- Continuous bed motion versus step-and-shoot acquisition in LAFOV PET/CT: insights from multi-phantom and patient studies.EJNMMI physics · 2026Article
- Long vs. short axial field-of-view PET scanners for brain imaging: a phantom study.Frontiers in nuclear medicine · 2026Article
- Whole-Body [Scientific data · 2025Article
- Feasibility of in vivo small animal imaging using a clinical total-body PET/CT system.EJNMMI physics · 2025Article
- One-day dual-tracer examination in neuroendocrine neoplasms: a real advantage of low activity LAFOV PET imaging.European journal of nuclear medicine and molecular imaging · 2025Article
- A digital twin of the Biograph Vision Quadra long axial field of view PET/CT: Monte Carlo simulation and image reconstruction framework.EJNMMI physics · 2025Article
- Low-activity [EJNMMI physics · 2025Article
- Optimization and impact of sensitivity mode on abbreviated scan protocols with population-based input function for parametric imaging of [European journal of nuclear medicine and molecular imaging · 2024Article
- Optimization of Y-90 Radioembolization Imaging for Post-Treatment Dosimetry on a Long Axial Field-of-View PET/CT Scanner.Diagnostics (Basel, Switzerland) · 2023Article
- Image Quality and Quantitative PET Parameters of Low-Dose [Diagnostics (Basel, Switzerland) · 2023Article
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8 authors.
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Abstract
The sensitivity of a PET system highly depends on the axial acceptance angle or maximum ring difference (MRD), which can be particularly high for total-body scanners due to their larger axial field of views (aFOVs). This study aims to evaluate the impact on image quality (IQ) and noise performance when MRD85 (18°), the current standard for clinical use, is increased to MRD322 (52°) for the Biograph Vision Quadra (Siemens Healthineers).
methodsStudies with a cylindrical phantom covering the 106 cm aFOV and an IEC phantom filled with
resultsCV was improved by a factor of up to 1.49 and is highest for short acquisition times, peaks at the center field of view and mitigates parabolic in axial direction with no difference to MRD85 beyond the central 80 cm. No substantial differences between the two evaluated MRDs in regards to uniformity, SUV
conclusionPatient and phantom studies revealed that scan time could be lowered by approximately a factor of two with MRD322 while maintaining similar noise performance. The moderate degradation in spatial resolution for MRD322 is worth to exploit the full potential of the Quadra by either shorten scan times or leverage noise performance in particular for low count scenarios such as ultra-late imaging or dynamic studies with high temporal resolution.
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