Automated Segmentation of Breast in 3-D MR Images Using a Robust Atlas

Autor: Sharmila Balasingham, Cristina Gallego-Ortiz, Farzad Khalvati, Anne L. Martel
Rok vydání: 2015
Předmět:
Zdroj: IEEE Transactions on Medical Imaging. 34:116-125
ISSN: 1558-254X
0278-0062
DOI: 10.1109/tmi.2014.2347703
Popis: This paper presents a robust atlas-based segmentation (ABS) algorithm for segmentation of the breast boundary in 3-D MR images. The proposed algorithm combines the well-known methodologies of ABS namely probabilistic atlas and atlas selection approaches into a single framework where two configurations are realized. The algorithm uses phase congruency maps to create an atlas which is robust to intensity variations. This allows an atlas derived from images acquired with one MR imaging sequence to be used to segment images acquired with a different MR imaging sequence and eliminates the need for intensity-based registration. Images acquired using a Dixon sequence were used to create an atlas which was used to segment both Dixon images (intra-sequence) and T1-weighted images (inter-sequence). In both cases, highly accurate results were achieved with the median Dice similarity coefficient values of $94\% \pm 4\%$ and $87 \pm 6.5\%$ , respectively.
Databáze: OpenAIRE