Clinical value of color Doppler energy in the diagnosis of renal artery stenosis

Objective To evaluate the diagnosis value of color Doppler energy in the diagnosis of renal artery stenosis.Methods 16 patients with renal artery stenosis were examined with conventional color Doppler sonography and color Doppler energy.The diagnostic results were divided into three scales:no diagnosis result,doubted diagnosis;unequivocal diagnosis.The results were compared with those of digital subtraction angiography.Results The sensitivity,specificity of conventional color Doppler scanning were 56.3%(9/16),50%(2/4),respectively;those of color Doppler energy imaging were 75%(12/16),75%(3/4),respectively.Conclusion Color Energy Doppler(CDE) is one kind of sensitive colored Doppler technology,may demonstrate low speed blood stream which CDFI surveys with difficulty,and has the relative non-angle dependence,therefore is higher than CDFI to the renal artery stenosis rate,thus can effectively improve renal artery narrow detection rate.