k-Wave Toolbox |

# scanConversion

Convert scan-lines in polar coordinates to a B-mode ultrasound image

## Syntax

    b_mode = scanConversion(scan_lines, steering_angles, image_size, c0, dt)
    b_mode = scanConversion(scan_lines, steering_angles, image_size, c0, dt, resolution)

## Description

`scanConversion` computes the remapping between a series of scan lines in polar coordinates (i.e., taken at different steering angles) to a B-mode ultrasound image in Cartesian coordinates suitable for display. The remapping is performed using bilinear interpolation via `interp2`.

## Inputs

`scan_lines` | matrix of scan lines indexed as (angle, time)
`steering_angles` | array of scanning angles [degrees]
`image_size` | [x, y] size of the desired output image [m]
`c0` | sound speed in the medium [m/s]
`dt` | time step used in the acquisition of the scan lines [s]
`resolution` | optional input to set the resolution of the output images in pixels (default = [256, 256])

## Outputs

`b_mode` | the converted B-mode ultrasound image

## See Also

`interp2`

© 2009-2014 Bradley Treeby and Ben Cox.