You will be presented with a citation segment from the section of a research paper. Classify the intent behind this citation by choosing from one of the following categories:

- Method: Cites the paper for its methodology or procedure.
- Background: Cites the paper to provide background information.
- Result: Cites the paper for its findings or results.

Your answer should be a single word from the following list of options: ["Method", "Background", "Result"]. Do not include any other text in your response.

Citation sentence:

The available methods include use of texture (Binder et al., 1999), local phase (Mulet-Parada and Noble, 2000), a gradient-based deformable model (Coppini et al., 1995), a region-based deformable model (Lin et al., 2003; Mignotte et al., 2001), and pixel-wise clustering (Boukerroui et al., 2003). Shape and time information have also been incorporated in an Active Appearance Motion Model (AAMM) (Bosch et al., 2002), an extended Kalman filter (Orderud et al., 2007), or a manifold learning-based framework (Yang et al., 2008). A more comprehensive overview is given in Noble et al. (2006). Compared with endocardial (ENDO) segmentation, the automation of epicardial (EPI) segmentation is inherently more challenging due to the severe imaging and anatomical factors.
Method