Table A1.

A description of different DBT and FFDM (SFM) systems used in clinical studies. The Siemens and GE systems were based on a stationary detector design, while the others systems used moving detectors. The DBT systems by Xcounter, Sectra (Philips) and GE used iterative reconstruction methods, while the other systems used filtered-back projection methods.

Study	Studies on DBT systems of various designs (2008–2014)						Comparative FFDM (SFM) systems

	Manufacturer	DBT unit (FFDM platform or clinical unit)	AEC	Detector technology/Conversion of X-rays	Number of projections	Angular range (°)
Gennaro et al. 2010 [21]Gennaro et al. 2013 [22]Thibault et al. 2013 [42]	GE*	Senographe DS	No	CsI, amorphous silicon/Indirect	15	40	Senographe 2000D Senographe 2000D
Thibault et al. 2013 [42]							Senographe DS/2000D
Svahn et al. 2010 [5] Svahn et al. 2012 [37]	Siemens*	Novation^DR	No	Amorphous selenium/Direct	25	50	Mamomat Novation^DR
Svane et al. 2010 [23]	Xcounter	Xmamo – 3T	No	48 parallel detector elements/Photon-counting	26	26	FFDM: Giotto Image SDL, Giotto Image 3DL, Selenia, Senographe DS, Senographe Essential SFM: Diamond, Mammomat 3000
Wallis et al. 2012 [19] Zanca et al. 2012 [20]	Sectra (Philips)	MicroDose	Yes	Multislit (Si)/Photon-counting	21	11	MicroDose D40, Senographe DS, Senographe Essential
Good et al. 2008 [47] ^a Gur et al., 2009 [48]^a Teerstra et al. 2010 [49] Rafferty et al. 2013 [50] Rafferty et al. 2014 [33]	Hologic	Selenia	No	Amorphous selenium/Direct	11	15	– – Selenia Selenia Selenia
Michell et al. 2012 [29] ^b Waldherr et al. 2013 [51] Skaane et al. 2014 [6] Shin et al. 2014 [44]	Hologic	Selenia Dimension	s Yes	Amorphous selenium/Direct	15	15	Selenia Dimensions

In the studies by Good et al. [47] and Gur et al. [48] there was no specific information on the model/name of DBT or FFDM system(s) used, but technicalities of the DBT unit was the same as for the Hologic investigational unit based on the Selenia platform.

In the study by Waldherr et al. [51] the system had similar technical description as the clinical unit, but the model/name was not presented.