Estimation of T2* Relaxation Time of Breast Cancer: Correlation with Clinical, Imaging and Pathological Features
Korean Journal of Radiology
;
: 238-248, 2017.
Article
in English
| WPRIM
| ID: wpr-208822
ABSTRACT
OBJECTIVE:
The purpose of this study was to estimate the T2* relaxation time in breast cancer, and to evaluate the association between the T2* value with clinical-imaging-pathological features of breast cancer. MATERIALS ANDMETHODS:
Between January 2011 and July 2013, 107 consecutive women with 107 breast cancers underwent multi-echo T2*-weighted imaging on a 3T clinical magnetic resonance imaging system. The Student's t test and one-way analysis of variance were used to compare the T2* values of cancer for different groups, based on the clinical-imaging-pathological features. In addition, multiple linear regression analysis was performed to find independent predictive factors associated with the T2* values.RESULTS:
Of the 107 breast cancers, 92 were invasive and 15 were ductal carcinoma in situ (DCIS). The mean T2* value of invasive cancers was significantly longer than that of DCIS (p = 0.029). Signal intensity on T2-weighted imaging (T2WI) and histologic grade of invasive breast cancers showed significant correlation with T2* relaxation time in univariate and multivariate analysis. Breast cancer groups with higher signal intensity on T2WI showed longer T2* relaxation time (p = 0.005). Cancer groups with higher histologic grade showed longer T2* relaxation time (p = 0.017).CONCLUSION:
The T2* value is significantly longer in invasive cancer than in DCIS. In invasive cancers, T2* relaxation time is significantly longer in higher histologic grades and high signal intensity on T2WI. Based on these preliminary data, quantitative T2* mapping has the potential to be useful in the characterization of breast cancer.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Relaxation
/
Breast
/
Breast Neoplasms
/
Magnetic Resonance Imaging
/
Linear Models
/
Multivariate Analysis
/
Carcinoma, Intraductal, Noninfiltrating
Type of study:
Prognostic study
Limits:
Female
/
Humans
Language:
English
Journal:
Korean Journal of Radiology
Year:
2017
Type:
Article
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