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High-resolution real-time ultrasonic scanner.

M Berson1, L Vaillant, F Patat

  • 1Unité INSERM 316, GIP Ultrasons, Laboratoire de Biophysique Médicale, Faculté de Médecine, Tours, France.

Ultrasound in Medicine & Biology
|January 1, 1992
PubMed
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This study introduces a high-resolution ultrasound scanner for detailed skin imaging. The device achieves excellent resolution, enabling clear visualization of microstructures and various skin conditions.

Area of Science:

  • Medical imaging
  • Biomedical engineering
  • Dermatology

Background:

  • High spatial resolution is crucial for detailed echographic examination of superficial tissues like skin, microvessels, and small animals.
  • Existing ultrasound technologies may have limitations in achieving the necessary resolution for such applications.

Purpose of the Study:

  • To develop and evaluate a novel ultrasound scanner capable of providing high spatial resolution for superficial imaging.
  • To assess the device's performance on phantoms and in vivo for dermatological applications.

Main Methods:

  • Utilized a strongly focused, wide-band transducer with a 17 MHz center frequency and 22 MHz bandwidth.
  • Implemented transducer movement to acquire a 6 mm wide and 5 mm deep echographic cross-section at 15 images/s.

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  • Achieved axial resolution of approximately 0.08 mm and lateral resolution of 0.2–0.3 mm.

    • Main Results:

    • The developed ultrasound scanner demonstrated high spatial resolution, with axial resolution around 0.08 mm and lateral resolution between 0.2–0.3 mm.
    • The device successfully imaged phantoms in water and was tested in vivo on normal and pathological skin.
    • Explorations were conducted on conditions including psoriasis, basocellular carcinoma, malignant melanoma, and sarcoidosis.

    Conclusions:

    • The described ultrasound scanner provides high spatial resolution suitable for detailed echographic exploration of the skin.
    • The device's performance suggests its utility for in vivo dermatological imaging and diagnosis of various skin conditions.