Analysis on the use of Multi-Sequence MRI Series for Segmentation of Abdominal Organs

3rd International Conference on Mathematical Modeling in Physical Sciences

物理学;数学

Selver, M.A.^1 ; Selvi, E.^2 ; Kavur, E.^2 ; Dicle, O.^3

Dokuz Eylül University, Department of Electrical and Electronics Engineering, Tinaztepe Campus, Buca, Izmir

35160, Turkey^1

Dokuz Eylül University, Institute of Natural and Applied Sciences, Tinaztepe Campus, Buca, Izmir

35160, Turkey^2

Dokuz Eylül University, Faculty of Medicine, Department of Radiology, Balçova, Izmir, Turkey^3

关键词: Acquisition parameters;    Anatomical properties;    Clinical practices;    Computational technique;    Contrast mechanism;    Respiratory motions;    Sequential manners;    Three-dimensional data;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/574/1/012139/pdf
DOI  :  10.1088/1742-6596/574/1/012139

来源: IOP

【 摘 要 】

Segmentation of abdominal organs from MRI data sets is a challenging task due to various limitations and artefacts. During the routine clinical practice, radiologists use multiple MR sequences in order to analyze different anatomical properties. These sequences have different characteristics in terms of acquisition parameters (such as contrast mechanisms and pulse sequence designs) and image properties (such as pixel spacing, slice thicknesses and dynamic range). For a complete understanding of the data, computational techniques should combine the information coming from these various MRI sequences. These sequences are not acquired in parallel but in a sequential manner (one after another). Therefore, patient movements and respiratory motions change the position and shape of the abdominal organs. In this study, the amount of these effects is measured using three different symmetric surface distance metrics performed to three dimensional data acquired from various MRI sequences. The results are compared to intra and inter observer differences and discussions on using multiple MRI sequences for segmentation and the necessities for registration are presented.