[Power Doppler as a method that is better than color Doppler for evaluation of thyroid nodular lesions].
OBJECTIVE
The evaluation of usefulness of color Doppler sonography and power Doppler sonography in the diagnostics of thyroid nodules with the low or absent uptake of (99m)Tc-pertechnate. Although scintigraphy is highly sensitive method in the diagnosis of cold nodules it is non-specific in the diagnostics of malignant changes of thyroid. We tried to investigate the possibility to improve the diagnostic accuracy of sonography.


METHODS
122 cold thyroid nodules were investigated with linear 7.5 Mhz Doppler probe. The flow pattern in power Doppler and color Doppler were correlated with cytologic and histopathologic examination.


RESULTS
According to cytology, PD has better sensitivity and specificity than CD; consecutively-100% vs. 86.6% and 93.4% vs. 84.1%.


CONCLUSIONS
1. Power Doppler can detect low blood flow in small blood vessels, observed in thyroid cancer. 2. Power Doppler allows the best nodules selection for fine-needle biopsy than color Doppler.
Zakładu Radiologii, Akademii Medycznej w Białymstoku.
U
U
Łebkowska
J
J
Dziecioł
D
D
Jurgilewicz
J
J
Łaszkiewicz
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D012680:Sensitivity and Specificity; D013670:Sodium Pertechnetate Tc 99m / Q000493:pharmacokinetics; D016606:Thyroid Nodule / Q000000981:diagnostic imaging* / Q000378:metabolism / Q000473:pathology; D018608:Ultrasonography, Doppler / Q000379:methods*; D018615:Ultrasonography, Doppler, Color
D013670:Sodium Pertechnetate Tc 99m