Table 2. Study Characteristics of Included Studies.
| Origin | Design | LCC Measurement Methods | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| First Author | Institutions | Country | Period | Publication Year | Prospective | Multicenter | Method to Set Threshold | Measured Sequence | Cutoff Value (mm)† | Ruler Tool |
| Baco (13) | Oslo University Hospital | Norway | Jan 2010–Sep 2013 | 2015 | No | No | ROC | T2WI | 20 | Curvilinear |
| Caglic (25) | Norfolk and Norwich University Hospital | England | Sep 2014–Jan 2017 | 2019 | No | No | ROC | T2WI | 10.5 | Curvilinear |
| Costa (26) | University of Texas Southwestern Medical Center | USA | Nov 2015–Jul 2016 | 2018 | No | No | PI-RADS v2 | T2WI | 10 | Linear |
| Granja (27) | Hospital Universitario Fundación Santa Fe de Bogotá | Columbia | Mar 2011–Dec 2013 | 2017 | No | No | ROC | T2WI | 17.5 | Curvilinear |
| Kongnyuy (28) | National Institutes of Health, Bethesda | USA | May 2007–Dec 2015 | 2017 | No | No | ROC | T2WI | 12.5 | Curvilinear |
| Krishna (29) | Ottawa Hospital | Canada | Nov 2012–May 2015 | 2018 | No | No | ROC | T2WI | 11 | Curvilinear |
| Matsuoka (30) | Tokyo Medical and Dental University Graduate School | Japan | Aug 2007–Mar 2015 | 2017 | No | No | ROC | T2WI | 10 | Curvilinear |
| Mehralivand (31) | University Medical Center, Mainz | Germany | Jun 2007–Mar 2017 | 2019 | No* | No | NA | T2WI | 15 | Curvilinear |
| Onay (14) | Baskent University School of Medicine | Turkey | 2012–2017 | 2019 | No | No | ROC | T2WI, ADC, DCE | 14, 14‡, 13§ | Curvilinear |
| Outwater (32) | Thomas Jefferson University Hospital & Jefferson Medical College | USA | NA | 1994 | No | No | ROC | T2WI | 12 | Linear |
| Rosenkrantz (15) | NYU Langone Medical Center | USA | NA | 2016 | No | No | ROC | T2WI, ADC | 6, 7‡ | Linear |
| Woo (16) | Seoul National University Hospital | Korea | Jan 2012–Dec 2012 | 2016 | No | No | ROC | T2WI, ADC, DCE | 14, 13‡, 12§ | Curvilinear |
| Yu (33) | University of California | USA | May 1992–Mar 1995 | 1997 | No | No | NA | T2WI | 12 | NA |
*Prospective designed study, but LCC measurement was performed retrospectively, †Otherwise specified, threshold set on T2WI, ‡Threshold set on ADC, §Threshold set on DCE. ADC = apparent diffusion coefficient, DCE = dynamic contrast enhanced, LCC = length of tumor capsular contact, PI-RADS = Prostate Imaging Reporting and Data System, ROC = receiver operating characteristic, T2WI = T2-weighted image