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  • Tolbod, Lars P.Aarhus Univ Hosp, Dept Nucl Med, Aarhus C, Denmark;Aarhus Univ Hosp, PET Ctr, Aarhus C, Denmark (author)

Non-invasive quantification of tumor blood flow in prostate cancer using O-15-H2O PET/CT

  • Article/chapterEnglish2018

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  • E-CENTURY PUBLISHING CORP,2018
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  • LIBRIS-ID:oai:DiVA.org:uu-369434
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-369434URI

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  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

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  • Tumor blood flow (TBF) measurements in prostate cancer (PCa) provide an integrative index of tumor growth, which could be important for primary diagnosis and therapy response evaluation. O-15-water PET is the noninvasive gold standard but is technically demanding. The aim of this study was to compare the accuracy of three different non-invasive strategies with an invasively measured arterial input function (BSIF): Using image-derived input functions (IDIF) from either 1) a separate heart scan or 2) the pelvic scan or 3) a populations-based input function (PBIF). Nine patients with biopsy-verified PCa scheduled for prostatectomy were included. All patients were characterized with serum levels of PSA (s-PSA), multiparametric magnetic resonance imaging (mpMRl) and post-surgical histopathology Gleason Grade. Dynamic O-15-water was performed of the heart and the pelvic area 15 minutes apart. TBF estimated from both wash-in (K-1) and wash-out (k(2)) constants was calculated using a one-compartmental model. Results: Mean (range) s PSA was 12 (3-27) ng/mL, Gleason Grade Group was 2.9 (1-5), k(2) was 0.44 (0.007-1.2), and K-1 was 0.24 (0.07-0.55) mL,/mL/min. k(2) (BSIF)correlated with s-PSA (r=0.86, P<0.01) and Gleason Grade Group (rho=0.78, P=0.01). BSIF, heart-IDIF and PBIF provided near-identical k(2) and K-1 (r>0.95, P<0.001) with slopes near unity. The correlations of BSIF and pelvic-IDIF rate constants were good (r>0.95, P<0.001), but individual errors high. In conclusion, non-invasive protocols for O-15-water PET with IDIF or PBIF accurately measures perfusion in prostate cancer and might be useful for evaluation of tumor aggressiveness and treatment response.

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  • Nielsen, Maria M.Aarhus Univ Hosp, Dept Nucl Med, Aarhus C, Denmark;Aarhus Univ Hosp, PET Ctr, Aarhus C, Denmark (author)
  • Pedersen, Bodil G.Aarhus Univ Hosp, Dept Radiol, Aarhus C, Denmark (author)
  • Hoyer, SorenAarhus Univ Hosp, Dept Histopathol, Aarhus C, Denmark (author)
  • Harms, Hendrik J.Aarhus Univ Hosp, Dept Nucl Med, Aarhus C, Denmark;Aarhus Univ Hosp, PET Ctr, Aarhus C, Denmark (author)
  • Borre, MichaelAarhus Univ Hosp, Dept Urol, Aarhus C, Denmark (author)
  • Borghammer, PerAarhus Univ Hosp, Dept Nucl Med, Aarhus C, Denmark;Aarhus Univ Hosp, PET Ctr, Aarhus C, Denmark (author)
  • Bouchelouche, KirstenAarhus Univ Hosp, Dept Nucl Med, Aarhus C, Denmark;Aarhus Univ Hosp, PET Ctr, Aarhus C, Denmark (author)
  • Frokiaer, JorgenAarhus Univ Hosp, Dept Nucl Med, Aarhus C, Denmark;Aarhus Univ Hosp, PET Ctr, Aarhus C, Denmark (author)
  • Sörensen, JensUppsala universitet,Radiologi,Aarhus Univ Hosp, Dept Nucl Med, Aarhus C, Denmark;Aarhus Univ Hosp, PET Ctr, Aarhus C, Denmark(Swepub:uu)jenssore (author)
  • Aarhus Univ Hosp, Dept Nucl Med, Aarhus C, Denmark;Aarhus Univ Hosp, PET Ctr, Aarhus C, DenmarkAarhus Univ Hosp, Dept Radiol, Aarhus C, Denmark (creator_code:org_t)

Related titles

  • In:American Journal of Nuclear Medicine and Molecular Imaging: E-CENTURY PUBLISHING CORP8:5, s. 292-3022160-8407

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