ABSTRACT
Objective To investigate the imaging features of MRI in patients with invasive ductal carcinoma of breast cancer .Methods 75 patients with breast ductal carcinoma treated by surgical treatment were selected . According to the age,75 patients were divided into young group (≤40 years) with 22 cases and elderly group ( >40 years) with 53 cases.The morphology,location,size,border and edge of the two groups were analyzed .The time signal intensity curve ( TIC) was analyzed.Results The proportion of patients with non -luminal invasive ductal carcinoma of the young group was 54.55％,which was higher than 30.19％ of the elderly group,the difference was statistically significant(χ2 =3.94,P=0.047).The proportion of breast cancer infiltrating ductal carcinoma in the young group was 63.64％,which was higher than 37.74％in the elderly group,the difference was statistically signifi-cant(χ2 =4.21,P=0.040).The proportion of the infarcted ductal carcinoma in the young group was 59.09％,and that in the elderly group was 62.26％,the difference was not statistically significant(χ2=2.19,P=0.14).The proportion of breast invasive ductal carcinoma in the young group was 63.64％, which in the elderly group was 54.72％, the difference was not statistically significant (χ2 =0.13,P=0.72).Ⅰ,ⅡandⅢtype of breast ductal carcinoma TIC in the young group were 0cases,14cases,8cases,respectively,which in the elderly group were 0cases,36cases,17cases, respectively,there was no statistically significant difference in TIC grade between the two groups (χ2 =2.26,P=0.13 ) .Conclusion Breast infiltrating ductal carcinoma is mostly pulmonary lump type ,tumor border is unclear;MRI dynamic enhancement technique for the detection of breast invasive ductal carcinoma can reduce misdiagnosis .
ABSTRACT
Objective To explore the influence of different blood gas strategies on cerebral protection and blood gas analysis during moderate hypothermic cardiopulmonar.Methods Patients under cardiac valve replacement with extracorporeal circulation (ECC) were performed in this study.The cerebral blood flow (CBF) and regional cerebral oxygen saturation (rSO2) were monitored at 5 points:(1)Induction of anesthesia (T1),(2) after 10 min of the beginning of cardiopulmonary bypass (T2),(3) during the moderate hypothermic phase of CBP managed by the alpha-stat after calibrate blood gas 15 min (T3),(4) pH-stat followed,after calibrate blood gas 15 min (T4),and (5) 10 min after CBP (T5).pH and pCO2 in patients were recorded and analyzed at T3 and T4.Results The CBF of T2 and T3 was lower than that of T1,but the difference was not significant (t =2.841,2.711;P =0.062,0.080).The CBF of T4 and T5 was higher than that of T3,but the difference was not significant (t =1.793,2.135;P =0.119,0.066).The CBF of T5 resumed to before operation.The rSO2 of T2 and T3 was lower than that of T1,but the difference was not significant (t =1.821,2.032;P =0.132,0.267),the rSO2 ofT4 and T5 was higher than that ofT3,but the difference was not significant (t =1.879,2.021;P =0.312,0.075).The rSO2 of T5 resumed to before operation.However,the pH was much lower in pH-stat than alpha-stat (t =17.541,P =0.000) and the pCO2 was much higher than alpha-stat (t =13.914,P =0.000).Conclusions Both pH-stat and alpha-stat have cerebral protection effects.However,compared to pH-stat,alpha-stat could reduce the possibility of acidosis,and maintain the acid-base equilibrium.