Table 1.
Characteristics of included studies.
| Author year | No.of PD/ controls | Country | Scanner | Field-str | Head coil | DTI dir | ROI placement | statistic significance | M-corr. | Eddy cur. |
|---|---|---|---|---|---|---|---|---|---|---|
| Li14 2015 | 23/23 | China | Philips | 3.0 T | 8 | 31 | manual | FA | √ | √ |
| Perea17 2013 | 12/13 | USA | Allegra | 3.0 T | ? | 36 | manual | none | √ | √ |
| Schwarz22 2013 | 32/27 | UK | Philips | 3.0 T | 8 | 32 | manual | MD | √ | √ |
| Scherfler20 2013 | 16/14 | Austrilia | Siemens | 1.5 T | 8 | 12 | automatical | FA, MD | ? | ? |
| Du11 2011 | 16/16 | USA | Siemens | 3.0 T | 8 | 42 | Semi–Manual | FA | √ | √ |
| Prakash18 2012 | 11/12 | Singapore | Philips | 3.0 T | ? | 16 | manual | FA, MD | ? | ? |
| Skorpil21 2012 | 13/13 | Sweden | Philips | 1.5 T | 16 | 32 | manual | FA | √ | √ |
| Rolheiser19 2011 | 14/14 | Canada | General Electrics | 1.5 T | 8 | 31 | manual | FA | √ | √ |
| Menke15 2010 | 10/10 | UK | Siemens | 3.0 T | 12 | 60 | Semi–Manual | none | √ | √ |
| Péran16 2010 | 30/22 | Italy | Siemens | 3.0 T | ? | 30 | manual | FA | √ | √ |
| Gattellaro12 2009 | 10/10 | Italy | Siemens | 1.5 T | 4 | 12 | manual | MD | ? | ? |
| Chan10 2007 | 73/78 | singapore | Siemens | 1.5 T | ? | 12 | manual | FA | √ | √ |
| Langley13 2016 | 20/17 | USA | Siemens | 3.0 T | 12 | 64 | manual | none | ? | √ |
| Loane9 2016 | 18/14 | UK | Siemens | 3.0 T | 32 | 64 | manual | none | √ | √ |
Year: the year of the article published; No. of PD/controls: the number of PD patients compare to controls in article; Country: the country of the study carried out; Field-str: Field-strength of magnet; Head coil: number of channels within the receiver headcoil; DTI dir: Number of DTI diffusion directions for data acquisition; ROI placement: the method of ROI placement; statistic significance: If the FA or MD have statistic difference; M-corr: Motion correction used; Eddy cur: Eddy current correction used; “√” means a positive indicator; “?” means unclear.