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Sökning: WFRF:(Calvert P) > (2020-2023) > On the use of solid...

  • Tran-Gia, JohannesUniversity Hospital of Wϋrzburg (författare)

On the use of solid 133Ba sources as surrogate for liquid 131I in SPECT/CT calibration : a European multi-centre evaluation

  • Artikel/kapitelEngelska2023

Förlag, utgivningsår, omfång ...

  • 2023

Nummerbeteckningar

  • LIBRIS-ID:oai:lup.lub.lu.se:e609903b-3c25-498a-8333-7d4787c62afd
  • https://lup.lub.lu.se/record/e609903b-3c25-498a-8333-7d4787c62afdURI
  • https://doi.org/10.1186/s40658-023-00582-3DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:art swepub-publicationtype
  • Ämneskategori:ref swepub-contenttype

Anmärkningar

  • Introduction: Commissioning, calibration, and quality control procedures for nuclear medicine imaging systems are typically performed using hollow containers filled with radionuclide solutions. This leads to multiple sources of uncertainty, many of which can be overcome by using traceable, sealed, long-lived surrogate sources containing a radionuclide of comparable energies and emission probabilities. This study presents the results of a quantitative SPECT/CT imaging comparison exercise performed within the MRTDosimetry consortium to assess the feasibility of using 133Ba as a surrogate for 131I imaging. Materials and methods: Two sets of four traceable 133Ba sources were produced at two National Metrology Institutes and encapsulated in 3D-printed cylinders (volume range 1.68–107.4 mL). Corresponding hollow cylinders to be filled with liquid 131I and a mounting baseplate for repeatable positioning within a Jaszczak phantom were also produced. A quantitative SPECT/CT imaging comparison exercise was conducted between seven members of the consortium (eight SPECT/CT systems from two major vendors) based on a standardised protocol. Each site had to perform three measurements with the two sets of 133Ba sources and liquid 131I. Results: As anticipated, the 131I pseudo-image calibration factors (cps/MBq) were higher than those for 133Ba for all reconstructions and systems. A site-specific cross-calibration reduced the performance differences between both radionuclides with respect to a cross-calibration based on the ratio of emission probabilities from a median of 12–1.5%. The site-specific cross-calibration method also showed agreement between 133Ba and 131I for all cylinder volumes, which highlights the potential use of 133Ba sources to calculate recovery coefficients for partial volume correction. Conclusion: This comparison exercise demonstrated that traceable solid 133Ba sources can be used as surrogate for liquid 131I imaging. The use of solid surrogate sources could solve the radiation protection problem inherent in the preparation of phantoms with 131I liquid activity solutions as well as reduce the measurement uncertainties in the activity. This is particularly relevant for stability measurements, which have to be carried out at regular intervals.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Denis-Bacelar, Ana M.National Physical Laboratory, UK (författare)
  • Ferreira, Kelley M.National Physical Laboratory, UK (författare)
  • Robinson, Andrew P.National Physical Laboratory, UK (författare)
  • Bobin, ChristopheUniversity of Paris-Saclay (författare)
  • Bonney, Lara M.Churchill Hospital (författare)
  • Calvert, NicholasChristie NHS Foundation Trust (författare)
  • Collins, Sean M.University of Surrey,National Physical Laboratory, UK (författare)
  • Fenwick, Andrew J.National Physical Laboratory, UK (författare)
  • Finocchiaro, DomenicoUniversity Hospital of Modena (författare)
  • Fioroni, Federica (författare)
  • Giannopoulou, Katerina (författare)
  • Grassi, ElisaAzienda USL-IRCCS di Reggio Emilia(Swepub:lu)el1634gr (författare)
  • Heetun, WardaNational Physical Laboratory, UK (författare)
  • Jewitt, Stephanie J.Churchill Hospital (författare)
  • Kotzasarlidou, Maria (författare)
  • Ljungberg, MichaelLund University,Lunds universitet,Medicinsk strålningsfysik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Nuclear Medicine Physics,Forskargrupper vid Lunds universitet,Medical Radiation Physics, Lund,Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Lund University Research Groups(Swepub:lu)rafy-mlj (författare)
  • Lourenço, ValérieUniversity of Paris-Saclay (författare)
  • McGowan, Daniel R.University of Oxford,Churchill Hospital (författare)
  • Mewburn-Crook, JamieNational Physical Laboratory, UK (författare)
  • Sabot, BenoitUniversity of Paris-Saclay (författare)
  • Scuffham, JamesRoyal Surrey County Hospital (författare)
  • Sjögreen Gleisner, KatarinaLund University,Lunds universitet,Medicinsk strålningsfysik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Nuclear Medicine Physics,Forskargrupper vid Lunds universitet,Medical Radiation Physics, Lund,Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Lund University Research Groups(Swepub:lu)rafy-ksj (författare)
  • Solc, Jaroslav (författare)
  • Thiam, CheickUniversity of Paris-Saclay (författare)
  • Tipping, JillChurchill Hospital (författare)
  • Wevrett, JillRoyal Surrey County Hospital (författare)
  • Lassmann, MichaelUniversity Hospital of Wϋrzburg (författare)
  • University Hospital of WϋrzburgNational Physical Laboratory, UK (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:EJNMMI Physics10:12197-7364

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