title: [Stable contrast B-scan in thyroid diagnosis].
abstract: A new technique of bidimensional reproduction (B-Scan) is proposed. This is based on successive impressions on the same photogram of the same sections carried out at different amplification and on different frequencies. Frequency and amplification variations are based on constant A-Scan control for the bidimensional detection of echoes which at low frequency and weak amplification are not memorized.
mesh_terms: D000669:Amplifiers, Electronic; D006801:Humans; D006980:Hyperthyroidism / Q000175:diagnosis; D013959:Thyroid Diseases / Q000175:diagnosis*; D013964:Thyroid Neoplasms / Q000175:diagnosis; D014463:Ultrasonography
vernacular_title: Il B-scan stabile contrastato nella diagnostica tiroidea.