In-vivo ultrasound data from carotid artery
The data was obtained from the carotid artery in a transverse scan
on a healthy 33 years old male. The audio data was sampled for both
the reverse and forward flow. The data for the measurement is given below:
| Ultrasound scanner: | B-K Medical A/S type 3535 |
| Scan mode: | Duplex |
| Transducer: | B-K 8556, 3.2 MHz linear array probe |
| B-mode frame rate: | 27 f/s |
| B-mode gain: | 30% |
| Audio file name: | pm_car1.wav |
| Matlab file name: | pm_car1.mat |
| Place: | Common carotid artery, transverse scan |
| Doppler gain: | 58% |
| Pulse repetition frequency: | 3.5 kHz |
| Wall filter: | cut-off at 4.1 cm/s |
| Depth of measurement: | 1.4 cm |
| Angle between flow and beam: | Not relevant (set at 50°) |
| Range gate: | 2 mm |
| Duration: | 10.26 s |
| Sampling frequency: | 8 kHz |
| Resolution: | 16 bits samples |
| Sampled: | Forward and reverse flow signals |
The audio data can be obtained from the web-server from the directory:
https://courses.healthtech.dtu.dk/22485/files/ult_data/in-vivo/carotis/
Both the
raw audio data as a wave file can be found, along with
the
complex audio data in a Matlab file. The last file can be directly read and manipulate
with Matlab. The variable complex_data contains the complex data, forward
is the forward flow signal, and reverse is the reverse flow signal.
The wave file can be read by the command wavread in Matlab 5.1. Note that
this does not work in Matlab 5.0, due to a bug in wavread.
| 
Print Version