[Retracted] The Volume of T2 Low-Signal Band and the Width of the Widest Blood Vessel in Placenta Measured by MRI in Pregnant Women with Different Types of Placental Implantation and Its Differential Value

Table 1

Clinical features, MRI signs, volume of T2 hyposignal zone, and width of the widest blood vessel in placenta of the two groups.

Index	PI group ()	No PI group ()	/
Age (years)
<35	51 (64.560)	27 (72.970)	0.810	0.368
≥35	28 (35.440)	10 (27.030)
Pregnancy
Middle stage of pregnancy	5 (6.330)	1 (2.700)	0.139	0.710
Late stage of pregnancy	74 (93.670)	36 (97.300)
History of cesarean section
Not have	7 (8.860)	13 (35.140)	12.191	<0.001
Have	72 (91.140)	24 (64.860)
Abortion history
Not have	13 (16.460)	2 (5.410)	1.840	0.175
Have	66 (83.540)	35 (94.590)
Complicated with hysteromyoma
Not have	70 (88.610)	33 (89.190)	0.050	0.823
Have	9 (11.390)	4 (10.810)
MRI signs
Uneven placental signal	41 (51.900)	3 (8.110)	20.524	<0.001
T2 low-signal band shadow	36 (45.570)	5 (13.510)	11.331	<0.001
Discontinuity of serosa of uterus	5 (6.330)	0 (0.000)	1.153	0.283
Hemorrhage in placenta	4 (5.060)	0 (0.000)	0.718	0.397
T2 low-signal band volume (cm^3)			12.503	<0.001
Width of the widest blood vessel in placenta (cm)			4.849	<0.001