Table 4.

Summary of atlas-based methods. ${}^{\left(1\right)}$ Values estimated from figures; actual values not reported.

Study	Year	Datasets	No. of Patients	Performance						Image Modalities	Time/ Equipment	Category
				Dice (%)	ASD (mm)	HD (mm)	95HD (mm)	VE (%)	Sen (%)/PPV (%)
Chuang [45]	2019	In-house	54 + 20	$97.60\pm 10.60$	—	—	—	—	—	CT	3–8 h/CPU	Atlas-based
Mencarelli [46]	2014	In-house	188	—	—	—	—	—	—	CT	—	Atlas-based
Chen [47]	2015	PDDCA	40	$91.70\pm 2.34$	—	—	$2.49\pm 0.76$	—	—	CT	100 min/CPU	Atlas-based
Han [48]	2008	In-house	10	$90.00$	—	—	—	—	—	CT	1 h/CPU	Atlas-based
Wang [49]	2014	In-house	13 + 30	$91.00\pm 2.00$	$0.61\pm 0.17$	$0.92\pm 0.47$	—	—	—	CBCT + CT	—	Atlas-based
Zhang [50]	2007	In-house	7	$80.00$	$0.85$	—	—	—	—	CT	—	Atlas-based
Qazi [51]	2011	In-house	25	$93.00$	—	$2.64$	—	—	—	CT	12 min/CPU	Atlas-based
Gorthi [52]	2009	MICCAI 2009	18	$77.80\pm 7.40$	—	$16.87\pm 6.75$	—	—	—	CT	—	Atlas-based
Han [53]	2009	MICCAI 2009	18	$90.33\pm 1.49$	—	$8.07\pm 3.12$	—	—	—	CT	1 min/GPU	Atlas-based
Ayyalusamy [54]	2019	In-house	40	$85.00{}^{\left(1\right)}$	—	$9{}^{\left(1\right)}$	—	—	—	CT	—	Atlas-based
Haq [55]	2019	In-house PDDCA	45 32	$85.00{}^{\left(1\right)}$ $83.00{}^{\left(1\right)}$	—	—	$3.00{}^{\left(1\right)}$ $3.00{}^{\left(1\right)}$	$-5.00{}^{\left(1\right)}$ $52.00{}^{\left(1\right)}$	—	CT	—	Atlas-based
Liu [56]	2016	In-house	6	$89.50$	—	—	—	—	—	CT	10 min/—	Atlas-based
Zhu [57]	2013	In-house	32	$89.00\pm 4.00$	—	$9.80\pm 4.10$	—	—	—	CT	11.1 min/—	Atlas-based
Walker [58]	2014	In-house	40	$98.00\pm 2.00$	—	—	—	—	—	CT	19.7 min/—	Atlas-based
McCarroll [59]	2018	In-house	128	$84.00\pm 7.00$	$1.89\pm 1.55$	$18.63\pm 14.90$	—	—	—	CT	11.5 min/CPU	Atlas-based
La Macchia [60]	2012	In-house	5	$89.00\pm 2.00$	—	—	—	$-4.76\pm 7.12$	$87.00\pm 5.00$/ $92.00\pm 2.00$	CT	10.6 min/CPU	Atlas-based
Zaffino [61]	2016	In-house	25	$88.00\pm 7.00$	—	—	—	—	—	CT	120 min/CPU	Atlas-based
Huang [62]	2019	In-house	500	$84.50\pm 1.60$	—	—	—	—	—	CT	—/GPU	Atlas-based