[Phantom studies using echo contrast media to improve the Doppler color sonographic imaging of the superficial femoral artery in the adductor canal].
The adductor canal was simulated using 2.6 cm muscular tissue and 2 fasciae to analyse the limits of colour-coded Doppler sonography (angiodynography) in this region. Defects in the spectral signal cause a significant underestimation of mean, peak systolic and peak diastolic (backflow) velocities and of calculated blood flow. Furthermore the pulsatility index is overestimated and the colour-coded visualisation of the arteries is almost lost. For the most part, these changes can be compensated by administration of a sonographic contrast agent (SH U 454). A minimum of 9 mg microbubbles/ml blood is required. Nevertheless, the adjustment of system controls (e.g. transducer power) becomes more difficult and an ideal setting impossible.
Hendrickx
P
P
Medizinische Hochschule Hannover, Diagnostische Radiologie II.
Brassel
F
F
Roth
U
U
Froehlich
H
H
Wagner
H H
HH
D003287:Contrast Media; D005263:Femoral Artery / Q000000981:diagnostic imaging*; D006801:Humans; D007866:Leg / Q000000981:diagnostic imaging; D008961:Models, Structural; D009132:Muscles / Q000000981:diagnostic imaging; D011134:Polysaccharides; D014463:Ultrasonography
D003287:Contrast Media; D011134:Polysaccharides; C040642:SHU 454
Phantomuntersuchungen mit echokontrastgebenden Substanzen zur Verbesserung der farb-doppler-sonographischen Darstellung der A. femoralis superficialis im Adduktorenkanal.