eprintid: 10111112 rev_number: 34 eprint_status: archive userid: 608 dir: disk0/10/11/11/12 datestamp: 2020-10-01 14:51:36 lastmod: 2021-12-03 17:43:42 status_changed: 2020-10-01 14:51:36 type: article metadata_visibility: show creators_name: Giganti, F creators_name: Stavrinides, V creators_name: Stabile, A creators_name: Osinibi, E creators_name: Orczyk, C creators_name: Radtke, JP creators_name: Freeman, A creators_name: Haider, A creators_name: Punwani, S creators_name: Allen, C creators_name: Emberton, M creators_name: Kirkham, A creators_name: Moore, CM title: Prostate cancer measurements on serial MRI during active surveillance: it’s time to be PRECISE ispublished: pub subjects: UCH divisions: UCL divisions: B02 divisions: C10 divisions: D17 divisions: FI6 divisions: D16 divisions: G88 note: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. abstract: OBJECTIVE: The PRECISE criteria for reporting multiparametric MRI in patients on active surveillance (AS) for prostate cancer (PCa) score the likelihood of clinically significant change over time using a 1-5 scale, where 4 or 5 indicates radiological progression. According to the PRECISE recommendations, the index lesion size can be reported using different definitions of volume (planimetry or ellipsoid formula) or by measuring one or two diameters. We compared different measurements using planimetry as the reference standard and stratified changes according to the PRECISE scores. METHODS: We retrospectively analysed 196 patients on AS with PCa confirmed by targeted biopsy who had two MR scans (baseline and follow-up). Lesions were measured on T2 weighted imaging (T2WI) according to all definitions. A PRECISE score was assessed for each patient. RESULTS: The ellipsoid formula exhibited the highest correlation with planimetry at baseline (ρ = 0.97) and follow-up (ρ = 0.98) imaging, compared to the biaxial measurement and single maximum diameter. There was a significant difference (p < 0.001) in the yearly percentage volume change between radiological regression/stability (PRECISE 2-3) and progression (PRECISE 4-5) for planimetry (39.64%) and for the ellipsoid formula (46.78%). CONCLUSION: The ellipsoid formula could be used to monitor tumour growth during AS. Evidence of a significant yearly percentage volume change between radiological regression/stability (PRECISE 2-3) and progression (PRECISE 4-5) has been also observed. ADVANCES IN KNOWLEDGE: The ellipsoid formula is a reasonable surrogate for planimetry in capturing tumour volume changes on T2WI in patients on imaging-led AS. This is also associated with radiological changes using the PRECISE recommendations. date: 2020-12 date_type: published official_url: http://dx.doi.org/10.1259/bjr.20200819 oa_status: green full_text_type: pub language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 1816062 doi: 10.1259/bjr.20200819 lyricists_name: Emberton, Mark lyricists_name: Giganti, Francesco lyricists_name: Moore, Caroline lyricists_name: Orczyk, Clement lyricists_name: Punwani, Shonit lyricists_name: Stavrinides, Vasilis lyricists_id: MEMBE52 lyricists_id: FGIGA51 lyricists_id: CMMOO61 lyricists_id: CORCZ53 lyricists_id: SPUNW14 lyricists_id: VSTAV68 actors_name: Flynn, Bernadette actors_id: BFFLY94 actors_role: owner full_text_status: public publication: British Journal of Radiology volume: 93 number: 1116 article_number: 20200819 event_location: England citation: Giganti, F; Stavrinides, V; Stabile, A; Osinibi, E; Orczyk, C; Radtke, JP; Freeman, A; ... Moore, CM; + view all <#> Giganti, F; Stavrinides, V; Stabile, A; Osinibi, E; Orczyk, C; Radtke, JP; Freeman, A; Haider, A; Punwani, S; Allen, C; Emberton, M; Kirkham, A; Moore, CM; - view fewer <#> (2020) Prostate cancer measurements on serial MRI during active surveillance: it’s time to be PRECISE. British Journal of Radiology , 93 (1116) , Article 20200819. 10.1259/bjr.20200819 <https://doi.org/10.1259/bjr.20200819>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10111112/1/bjr.20200819.pdf