[Results of measurement of resolution capability of ultrasonographic equipment using our new method].
The quality of sonographic instruments is vital for accurate medical diagnosis. To overcome one subjective problem associated with sonographic equipment, we have designed a system for objective instrument evaluation that is simple, accurate and valid. The system described fulfills the criteria for solving the outlined problem and enables us now to measure the parameters of both the axial and transversal resolutions. Additionally we can appreciate dynamic range of signal, gray scale parameters, the amplitude of video-signal and level of side lobes. To evaluate our method we examined two sonographies with different transducers working on the frequencies of 3 and/or 5 MHz. The method gives reliable results for sonographies quality assessment.
Dolezal
L
L
Ustav lékarské biofyziky Lékarské fakulty Univerzity Palackého v Olomouci, Czech Republic. LADOL@RISC.UPOL.CZ
Hálek
J
J
Smolan
S
S
D019047:Phantoms, Imaging; D011786:Quality Control; D014463:Ultrasonography / Q000592:standards*