ABSTRACT
Objective@#To observe the efficacy and safety of micro-plasma technology for the treatment of stable scars.@*Methods@#63 cases were divided into 4 groups, including burn scar group (28 cases), traumatic scar group(15 cases), acne scar group(10 cases), and hemangioma scar group (10 cases). Micro-plasma was performed every 2 months, 4 times as one session. Vancouver scar scale(VSS) was used to record the scar score and evaluate its clinical efficacy.@*Results@#All of the scar points in four groups dropped significantly after treatment, showing significant difference between groups(P<0.05). The point decrease rate in acne scar group and burn scar group was significantly higher than that in traumatic scar group and hemangioma scar group (P<0.05). Efficacy evaluation also showed obvious better effect in acne and burn scar than in traumatic scar (P<0.05).@*Conclusions@#The micro-plasma has a good effect on burn, trauma, acne and hemangioma scar, especially for burn and acne scar.
ABSTRACT
Objective To investigate the diagnostic value and imaging characteristics of MRI in the placenta accreta of patients with retained placenta.Methods Archieves of patients with retained placenta confirmed by clinical pathology were reviewed,with focus on imaging findings of MRI,including location of and signal intensity of placenta attach,hematometra,presence and absence of placenta accreta,signal intensity of retained placenta,shape,margin and border of retained placenta.The imaging characteristics were analysized with blindness and compared between patients with and without placenta accreta.Diagnostic value of MRI and ultrasound for the placenta accreta of patients with retained products of conception was assessed.Results There was no significant difference between the two groups of MRI characteristics except that the edge of the placenta was not clear.The sensitivity,specificity,accuracy,positive predictive value and negative predictive value for the evaluation of placenta accreta by MRI and ultrasound were 93.8% vs 56.3%,90.9% vs 90.9%,92.6%vs 70.4%,0.94 vs 0.9,0.91 vs 0.59,respectively;there were significant differences between MRI and ultrasound for sensitivity, specificity and negative predictive value.Conclusion M RI is substantially better than ultrasound for the diagnosis of placenta accreta. The unclear placenta edge and signs of placental infiltration of the myometrium are the basis for MRI diagnosis of placenta accreta.