Automatic segmentation of 15 critical anatomical labels and measurements of cardiac axis and cardiothoracic ratio in fetal four chambers using nnU-NetV2

Table 4 Dice coefficient and intersection over union (IoU) of each label

Method	LV	LA	RA	RV	IVS	IAS	LVW	RVW	LL	RL	DAO	SP	RIB	HA	TA	mDice	mIoU
Unet [33]	83.06	83.27	87.06	76.49	79.08	53.19	73.94	69.69	80.78	82.34	78.89	83.96	67.53	31.15	26.03	70.43	-
Unet [33]	71.03	71.34	77.08	61.93	65.40	36.23	58.66	53.48	67.76	69.98	65.13	72.35	50.98	18.45	14.96	-	56.98
Unet++ [35]	84.02	84.02	87.48	79.31	80.22	54.82	75.34	70.96	81.96	83.58	79.47	84.69	68.20	34.68	27.30	71.74	-
Unet++ [35]	72.44	72.45	77.75	65.73	66.79	37.76	60.43	54.99	69.44	71.79	65.94	73.44	51.74	20.98	15.81	-	58.50
Deeplabv3+ [32]	89.75	90.52	93.54	87.33	82.41	60.00	82.74	81.51	93.35	92.41	83.55	91.79	78.47	46.71	59.29	80.89	-
Deeplabv3+ [32]	81.41	82.67	87.86	77.50	70.08	42.86	70.56	68.79	87.53	85.89	71.75	84.82	64.57	30.47	42.14	-	69.93
SAN [34]	91.21	91.78	93.30	89.07	86.82	64.90	83.50	81.89	93.50	92.86	87.68	92.44	78.34	45.22	62.47	82.33	-
SAN [34]	83.83	84.81	87.44	80.30	76.71	48.04	71.67	69.33	87.79	86.68	78.06	85.94	64.40	29.22	45.43	-	71.98
nnU-netV2	90.12	92.42	94.11	88.21	85.59	72.92	81.13	81.05	92.06	93.23	89.91	93.91	77.18	88.19	86.67	87.11	-
nnU-netV2	82.01	85.91	88.88	78.91	74.80	57.39	68.25	68.14	85.29	87.32	81.67	88.51	62.84	78.87	76.48	-	77.68

*LV: left ventricle; LA: left atrium; RA: right atrium; RV: right ventricle; IVS: interventricular septum; IAS: interatrial septum; LVW: left ventricular wall; RVW: right ventricular wall; LL: left lung; RL: right lung; DAO: descending aorta; SP: spine; RIB: rib; HA: heart area; TA: thorax area
Bold values represents the maximum Dice or mIoU obtained for each structure in different models

ISSN: 1472-6947