Table 1.
Overview of the characteristics of the 34 included studies
| Author | Year | No. pts | Microscopic/Endoscopic, n | Field strength | NFPA, n (%) | Age, mean (± SD or range) | Male, n (%) | Newcastle–Ottawa scale (S/C/O) |
|---|---|---|---|---|---|---|---|---|
| Low-field | ||||||||
| Ahn et al | 2008 | 51 | 51/0 | 0.15 T Polestar N20 | NA | NA | NA | 3/0/3 |
| Berkmann et al | 2012 | 115 | 115/0 | 0.15 T Polestar N20 | 79 (69) | NA | NA | 3/0/3 |
| Bohinski et al | 2001 | 29 | 29/0 | 0.3 T AIRIS II | 22 (76) | 51 (24–74) | 18 (62) | 3/0/3 |
| Garcia et al | 2017 | 30 | 0/30 | 0.15 T Polestar N30 | 15 (50) | 55 | 13 (43) | 3/0/3 |
| Hlavica et al | 2013 | 104 | 104/0 | 0.15 T Polestar N20 | 104 (100) | 59 (22–86) | 57 (55) | 3/0/3 |
| Jimenez et al | 2016 | 18 | 0/18 | 0.15 T Polestar N20 | 10 (56) | NA | NA | 3/0/3 |
| Martin et al | 1999 | 5 | 5/0 | 0.5 T | 0 (0) | 36.2 (28–42) | 2 (40) | 3/0/3 |
| Ramm-Pettersen et al | 2011 | 20 | 20/0 | 0.5 T Signa SP | 16 (80) | 54 (23–71) | 13 (65) | 3/0/3 |
| Schwartz et al | 2006 | 15 | 0/15 | 0.12 T Polestar N10 | 11 (73) | 49 (29–67) | 9 (60) | 3/0/3 |
| Steinmeier et al | 1998 | 18 | 18/0 | 0.2 T | 15 (83) | 21–79 | 9 (50) | 3/0/3 |
| Strange et al | 2019 | 231 | 0/231 | 0.15 T Polestar N20 | 160 (69) | 55.5 (18–88) | 127 (55) | 3/0/3 |
| Wu et al | 2009 | 55 | 55/0 | 0.15 T Polestar N20 | 29 (53) | 45.9 (± 12.6) | 36 (65) | 3/0/3 |
| High-field | ||||||||
| Berkmann et al | 2014 | 85 | 85/0 | 1.5 T Magnetom | 85 (100) | 55 (± 14) | 57 (67) | 3/0/3 |
| Chen et al | 2012 | 13 | 13/0 | 1.5 T Magnetom | NA | NA | NA | 3/0/3 |
| Dort et al | 2001 | 15 | 15/0 | 1.5 T | NA | 50 (15–80) | 8 (53) | 3/0/3 |
| Gohla et al | 2019 | 42 | 42/0 | 1.5 T Espree | 35 (83) | 52 (17–79) | 23 (55) | 3/0/3 |
| Hlavac et al | 2019 | 111 | 66/45 | 1.5 T Espree | 91 (82) | 57.3 (22–78) | 75 (68) | 3/0/3 |
| Kuge et al | 2013 | 35 | 0/35 | 1.5 T | 27 (77) | 54.3 (± 15.5) | 18 (51) | 3/0/3 |
| Li et al | 2015 | 30 | 30/0 | 1.5 T Espree | 9 (30) | 36 (21–65) | 13 (43) | 3/0/3 |
| Nimsky et al | 2004 | 48 | 48/0 | 1.5 T | NA | NA | NA | 3/0/3 |
| Nimsky et al | 2006 | 85 | 85/0 | 1.5 T Magnetom | 85 (100) | NA | NA | 3/0/3 |
| Pal’a et al | 2017 | 96 | 68/28 | 1.5 T Espree | 64 (67) | 54 (7–78) | 71 (74) | 3/0/3 |
| Paterno et al | 2014 | 49 | 0/49 | 1.5 T Espree | 49 (100) | NA | NA | |
| Sylvester et al | 2015 | 156 | 115/41 | 1.5 T Espree | NA | NA | NA | 3/0/3 |
| Szerlip et al | 2011 | 53 | 53/0 | 1.5 T Espree | 39 (74) | 49 (1.8 SEM) | 25 (47) | 3/0/3 |
| Tanei et al | 2013 | 14 | 0/14 | 1.5 T Magnetom | 0 (0) | 37.4 (± 11.8) | 2 (14) | 3/0/3 |
| Zhang et al | 2017 | 137 | 0/137 | 1.5 T Espree | 103 (75) | 7–82 | 73 (53) | |
| Zhang et al | 2019 | 133 | 0/133 | 1.5 T Espree | 133 (100) | 50 (± 12) | 61 (46) | 3/0/3 |
| Ultra-high-field | ||||||||
| Fomekong et al | 2014 | 73 | 73/0 | 3 T Intera | NA | 50 (17–84) | 46 (63) | 3/0/3 |
| Netuka et al | 2011 | 49 | NA | 3 T | NA | NA | NA | 3/0/3 |
| Qiu et al | 2012 | 49 | NA | 3 T Mangetom | NA | NA | NA | 3/0/3 |
| Serra et al | 2016 | 51 | 0/51 | 3 T Mangetom | 33 (65) | 52 (21–83) | 27 (53) | 3/0/3 |
| Staartjes et al | 2019 | 95 | 0/95 | 3 T Magnetom | 65 (68) | 53.8 (20–82) | 53 (56) | 3/0/3 |
| Zaidi et al | 2016 | 20 | 0/20 | 3 T Verio | 14 (70) | 51.6 (34–72) | 9 (45) | 3/0/3 |
NFPA non-functioning pituitary adenoma, SD standard deviation, NA not applicable