The application value of dynamic contrast-enhanced magnetic resonance imaging quantitative parameters in the evaluation of the efficacy of neoadjuvant chemotherapy for breast cancer and its correlation with biological prognostic factors
To evaluate the value of dynamic contract-enhanced magnetic resonance imaging (DCE-MRI) quantitative parameters and the expression of related biological factors in the evaluation of the efficacy of neoadjuvant chemotherapy for breast cancer.
Methods:
A total of 56 female patients with breast cancer were recruited
all of them had complete clinical data and undertake neoadjuvant chemotherapy. In this study
they were divided into effective and ineffective groups according to the Response Evaluation Criteria in Solid Tumor (RECIST) criteria. The values of K
trans
K
ep
and V
e
before
after two courses and at the end of chemotherapy were compared. Immunohistochemical staining was used to detect the expression of estrogen receptor (ER)
progesterone receptor (PR)
human epidermal growth factor receptor 2 (HER2) and Ki-67 in breast cancer tissues
and the size of DCE-MRI quantitative parameters in different expression states was analyzed. The correlation between the quantitative parameters of DCE-MRI and the expression of Ki-67 was analyzed.
Results:
The K
trans
max
K
trans
mean
K
ep
max
and K
ep
mean expression in the effective group were significantly decreased than those before neoadjuvant chemotherapy (
P
<0.05). The K
trans
min expression was significantly lower at the end of chemotherapy than before neoadjuvant chemotherapy (
P
<0.05). The K
ep
max and K
ep
mean values in the ER-expressionand PR-expression negative groups were higher than those in the ER-expression and PR-expression positive groups (
P
<0.05). The V
e
max value in the PR-negative group wer
e higher than those in the PR-negative positive group (
P
<0.05). Ki-67 expression was positively correlated with K
trans
min
K
trans
max and K
trans
mean values (
r
=0.384
P
=0.003;
r
=0.294
P
=0.028;
r
=0.551
P
<0.01). There was no correlation between the value of K
ep
V
e
and Ki-67 expression (
P
>0.05).
Conclusion:
The quantitative parameters of DCE-MRI and the expression of related biological factors can evaluate the efficacy of neoadjuvant chemotherapy in breast cancer patients