Sonography, 20 mhz sonography
Synonym(s)
20 MHz ultrasound diagnostics; A-Scan; Ultrasound diagnostics 20 MHz
DefinitionThis section has been translated automatically.
Non-invasive imaging method with a resolution of 100 μm and a penetration depth of maximum 5-7 mm.
IndicationThis section has been translated automatically.
Especially for preoperative tumor depth diagnostics and monitoring of the course of the disease (early detection of local, subcutaneous and lymph node metastases) of malignant melanoma, borderline limitation of scleroderma basal cell carcinoma, thickness determination of basal cell carcinoma prior to cryosurgery, skin thickness measurement (e.g. as monitoring of the course of circumscript scleroderma). A reliable differential diagnosis of pigmented skin tumours is currently not possible by sonography alone.
LiteratureThis section has been translated automatically.
- Altmeyer P (1989) Dermatological ultrasound diagnostics. Current status and perspectives. Z. Hautkr. 64 (10): 727-728
- Altmeyer P et al (1992) General Phenomena of Ultrasound in Dermatology. In: AltmeyerP, Gammal S, Hoffmann K (eds) Ultrasound in Dermatology. Springer Verlag, Berlin Heidelberg New York, S. 55-79
- Hoffmann, El-Gammal S, Matthes U, Altmeyer P (1989) Digital 20 MHz sonography of the skin in preoperative diagnostics. Z. Hautkr. 64: 851-858
- Merk G, Ulrich J, Merk H, Kühne KH (1992) B-scan sonography in dermatology. Close to the skin derm 3: 232-238