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[History of high frequency sonography]
K Hoffmann1, K Dirting, M Stücker
1Dermatologische Klinik der Ruhr-Universität, Bochum.
Ultraschall in Der Medizin (Stuttgart, Germany : 1980)
|August 1, 1994
Summary
High-frequency ultrasound (HFUS) advancements allow detailed skin imaging. This technology aids in diagnosing inflammatory skin diseases and measuring tumors, improving therapeutic decisions.
Area of Science:
- Dermatology
- Medical Imaging
- Biophysics
Background:
- High-frequency ultrasound (HFUS) (< 20 MHz) has become crucial for skin imaging.
- Early A-mode scanners measured skin thickness; commercial 20 MHz B-scanning systems emerged in 1987.
- Correlation of HFUS images with histology enables interpretation of ultrasound phenomena.
Observation:
- HFUS is vital for monitoring inflammatory skin diseases like morphea and systemic sclerosis, considered the gold standard.
- Higher frequencies (> 20 MHz), including 50 and 100 MHz systems, are necessary for investigating intraepidermal structures and differential diagnoses.
- Ultrasound microscopy (< 1 micron resolution) is used for in vitro tissue morphology evaluation.
Findings:
- HFUS allows accurate tumor thickness measurement, directly impacting therapeutic regimens.
- Developed 50 and 100 MHz systems offer resolutions up to 11 microns for in vivo scanning.
- Computer-based 3D reconstructions of ultrasound data provide tumor volume and surface area information.
Implications:
- HFUS is essential for follow-up in inflammatory skin conditions and precise tumor measurement.
- Advanced HFUS systems (50-100 MHz) promise to resolve complex questions regarding skin structures.
- Tumor volume and surface parameters derived from HFUS are valuable for monitoring treatment efficacy and potentially serve as prognostic indicators.