Task:

Load the Stented Abdominal Aorta dataset from "stent/data/stent_512x512x174_uint16.raw", the information about this dataset:
Stented Abdominal Aorta
Description: CT Scan of the abdomen and pelvis. The dataset contains also a stent in the abdominal aorta. No contrast agent was used to enhance the blood vessels.
Data Type: uint16
Data Byte Order: little Endian
Data Spacing: 0.8398x0.8398x3.2
Data Extent: 512x512x174
Data loading is very important, make sure you correctly load the dataset according to their features.

Visualize the anatomical structures:
1. Apply volume rendering with appropriate transfer function for tissue differentiation
2. Create isosurfaces at two different density values to show different tissue types
3. Use contrasting colors for different structures (e.g., red for soft tissue, white for dense material)

Please think step by step and make sure to fulfill all the visualization goals mentioned above.

Finally, save the paraview state as "stent/results/stent.pvsm"