Bioacoustics Research Lab
University of Illinois at Urbana-Champaign | Department of Electrical and Computer Engineering | Department of Bioengineering
Department of Statistics | Coordinated Science Laboratory | Beckman Institute | Food Science and Human Nutrition | Division of Nutritional Sciences | College of Engineering
 Thursday, October 19th, 2017
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Bioengineering Research Partnership
William D. O'Brien, Jr. publications:

Michael L. Oelze publications:

Phase Aberration

By Mark A. Haun, Ph. D.

Data Sets:

  • ats
  • ats_2ab1
  • ats_4ab1
  • ats_slab
  • ats_wire
  • mouseab
  • mouseab2
  • rabbit_ribs
  • rat_liver
  • rat_tumor



  • ATS

    Target description:
    ATS #539 tissue-mimicking phantom; c = 1450 m/s. Background scatter, wires, anechoic cysts (8, 6, 4, 3, and 2 mm), and 15-mm graduated scattering cysts.

    Aberration:
    None.

    Data format:
    64x64x5002 array of 16-bit signed integers, big endian, no header; "fast" dimension is time (5002), then receive element number (64), then transmit element number (64).

    Temporal sampling:
    25 MHz rate (transducer center frequency 2.6 MHz); first sample at 0 µs; 200x averaging.

    Spatial sampling:
    315 µm pitch.

    Recommended pre-processing:
    Band-pass filter in time; dip filter in space-time; correct 64-signal monostatic subset by scaling and time-shifting. MATLAB code: ats.m, uses data file bpf2.mat.

    Download:
    ats.bin (40 MB).



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    ats_2ab1

    Target description:
    ATS #539 tissue-mimicking phantom; c = 1450 m/s. Background scatter, wires, anechoic cysts (8, 6, 4, 3, and 2 mm), and 15-mm graduated scattering cysts.

    Aberration:
    Rippled RTV silicone rubber:
    c = 1100 m/s
    3-mm max. thickness
    1-mm peak-to-peak ripple
    2.4-mm correlation length
    6-mm stand-off distance from transducer

    Data format:
    64x64x5002 array of 16-bit signed integers, big endian, no header; "fast" dimension is time (5002), then receive element number (64), then transmit element number (64).

    Temporal sampling:
    25 MHz rate (transducer center frequency 2.6 MHz); first sample at 0 µs; 160x averaging.

    Spatial sampling:
    315 µm pitch.

    Recommended pre-processing:
    Band-pass filter in time; dip filter in space-time; correct 64-signal monostatic subset by scaling and time-shifting. MATLAB code: ats_2ab1.m, uses data file bpf2.mat.

    Download:
    ats_2ab1.bin (40 MB).



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    ats_4ab1

    Target description:
    ATS #539 tissue-mimicking phantom; c = 1450 m/s. Background scatter, wires, anechoic cysts (8, 6, 4, 3, and 2 mm), and 15-mm graduated scattering cysts.

    Aberration: Rippled RTV silicone rubber:
    c = 1100 m/s
    4-mm max. thickness
    2-mm peak-to-peak ripple
    2.9-mm correlation length
    9-mm stand-off distance from transducer

    Data format:
    64x64x5002 array of 16-bit signed integers, big endian, no header; "fast" dimension is time (5002), then receive element number (64), then transmit element number (64).

    Temporal sampling:
    25 MHz rate (transducer center frequency 2.6 MHz); first sample at 0 µs; 200x averaging.

    Spatial sampling:
    315 µm pitch.

    Recommended pre-processing:
    Band-pass filter in time; dip filter in space-time; correct 64-signal monostatic subset by scaling and time-shifting. MATLAB code: ats_4ab1.m, uses data file bpf2.mat.

    Download:
    ats_4ab1.bin (40 MB).



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    ats_slab

    Target description:
    ATS #539 tissue-mimicking phantom; c = 1450 m/s. Background scatter, wires, anechoic cysts (8, 6, 4, 3, and 2 mm), and 15-mm graduated scattering cysts.

    Aberration:
    Flat slab of RTV silicone rubber:
    c = 1100 m/s
    18-mm thick
    4-mm stand-off distance from transducer

    Data format:
    64x64x10002 array of 16-bit signed integers, big endian, no header; "fast" dimension is time (10002), then receive element number (64), then transmit element number (64).

    Temporal sampling:
    20 MHz rate (transducer center frequency 2.6 MHz); first sample at 0 µs; 300x averaging.

    Spatial sampling:
    315 µm pitch.

    Recommended pre-processing:
    Band-pass filter in time; dip filter in space-time; correct 64-signal monostatic subset by scaling and time-shifting. MATLAB code: ats_slab.m, uses data file bpf2.mat.

    Download:
    ats_slab.bin (80 MB).



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    ats_wires

    Target description:
    ATS #539 tissue-mimicking phantom; c = 1450 m/s. Background scatter with embedded wires.

    Aberration:
    None.

    Data format:
    64x64x5002 array of 16-bit signed integers, big endian, no header; "fast" dimension is time (5002), then receive element number (64), then transmit element number (64).

    Temporal sampling:
    25 MHz rate (transducer center frequency 2.6 MHz); first sample at 0 µs; 200x averaging.

    Spatial sampling:
    315 µm pitch.

    Recommended pre-processing:
    Band-pass filter in time; dip filter in space-time; correct 64-signal monostatic subset by scaling and time-shifting. MATLAB code: ats_wires.m, uses data file bpf2.mat.

    Download:
    ats_wires.bin (40 MB).



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    mouseab

    Target description:
    Mouse abdomen, transverse plane.

    Aberration:
    None artificially added.

    Data format:
    64x64x502 array of 16-bit signed integers, big endian, no header; "fast" dimension is time (502), then receive element number (64), then transmit element number (64).

    Temporal sampling:
    10 MHz rate (transducer center frequency 2.6 MHz); first sample at 24.95 µs; 200x averaging.

    Spatial sampling:
    315 µm pitch.

    Recommended pre-processing:
    Correct 64-signal monostatic subset by scaling and time-shifting; interpolate to 40 MHz. MATLAB code: mouseab.m.

    Download:
    mouseab.bin (4 MB).



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    mouseab2

    Target description:
    Mouse abdomen, transverse plane.

    Aberration:
    None artificially added.

    Data format:
    64x64x502 array of 16-bit signed integers, big endian, no header; "fast" dimension is time (502), then receive element number (64), then transmit element number (64).

    Temporal sampling:
    10 MHz rate (transducer center frequency 2.6 MHz); first sample at 14.95 µs; 200x averaging.

    Spatial sampling:
    315 µm pitch.

    Recommended pre-processing:
    Correct 64-signal monostatic subset by scaling and time-shifting; interpolate to 40 MHz. MATLAB code: mouseab2.m.

    Download:
    mouseab2.bin (4 MB).



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    rabbit_ribs

    Target description:
    ATS #539 tissue-mimicking phantom; c = 1450 m/s. Background scatter, wires, anechoic cysts (8, 6, 4, 3, and 2 mm), and 15-mm graduated scattering cysts.

    Aberration:
    2-cm-thick section of rabbit chest wall, oriented so the scan plane cuts across several ribs; 1-cm stand-off distance from transducer.

    Data format:
    64x64x5002 array of 16-bit signed integers, big endian, no header; "fast" dimension is time (5002), then receive element number (64), then transmit element number (64).

    Temporal sampling:
    25 MHz rate (transducer center frequency 2.6 MHz); first sample at 0 µs; 100x averaging.

    Spatial sampling:
    315 µm pitch.

    Recommended processing:
    Band-pass filter in time; dip filter in space-time; correct 64-signal monostatic subset by scaling and time-shifting. MATLAB code: rabbit_ribs.m, uses data file bpf2.mat.

    Download:
    rabbit_ribs.bin (40 MB).



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    rat_liver

    Target description:
    Rat abdomen, transverse plane.

    Aberration:
    None artificially added.

    Data format:
    64x64x2502 array of 16-bit signed integers, big endian, no header; "fast" dimension is time (2502), then receive element number (64), then transmit element number (64).

    Temporal sampling:
    25 MHz rate (transducer center frequency 2.6 MHz); first sample at 0 µs; 150x averaging.

    Spatial sampling:
    315 µm pitch.

    Recommended processing:
    Band-pass filter in time; dip filter in space-time; correct 64-signal monostatic subset by scaling and time-shifting. MATLAB code: rat_liver.m, uses data file bpf2.mat.

    Download:
    rat_liver.bin (20 MB).



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    rat_tumor

    Target description:
    Rat mammary tumor.

    Aberration:
    None artificially added.

    Data format:
    64x64x2502 array of 16-bit signed integers, big endian, no header; "fast" dimension is time (2502), then receive element number (64), then transmit element number (64).

    Temporal sampling:
    25 MHz rate (transducer center frequency 2.6 MHz); first sample at 0 µs; 200x averaging.

    Spatial sampling:
    315 µm pitch.

    Recommended processing:
    Band-pass filter in time; dip filter in space-time; correct 64-signal monostatic subset by scaling and time-shifting. MATLAB code: rat_tumor.m, uses data file bpf2.mat.

    Download:
    rat_tumor.bin (20 MB).



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