|
KMID : 0361819980170040359
|
|
Journal of the Korean Society of Medical Ultrasound
1998 Volume.17 No. 4 p.359 ~ p.364
|
|
|
Differentiation of Retinal Detachment and Vitreous Membrane Formation using Color & Power Doppler Ultrasonography
|
|
|
|
|
Abstract
|
|
|
PURPOSE : Occasionally, it is very difficult to differentiate between vitreous membrane(VM) and retinal detachment(RD) with ultrasonography only. We had tried to search differential diagnosis points between RD and VM by color and power Doppler sonography.
MATERIALS & METHODS : Sonographic evaluation, including Doppler sonography was performed in 57 symptomatic eyes of 41 patients with eye ball trauma, proliferative diabetic retinopathy or hypertensive retinopathy. We observed echogenic bands in vitreous chamber and evaluated flow signal within bands by color and power Doppler sonography which have a IOMHz linear transducer. The RD has been defined as an existence of blood flow from optic nerve to echogenic band. The VM has been defined without blood flow within echogenic band. Final diagnosis was confirmed by surgery (n=26), follow-up ophthalmologic evaluation (n=31).
RESULTS : 57 cases, which had echogenic band in sonographic exam, was con-firmed 12 RD cases and 45 VM cases. 6 cases of 12 RD were combined with VM. 9 cases were confirmed RD in 10 cases which had been diagnosed RD in color & power Doppler ultrasonogram. 44 cases were confirmed VM in 47 cases which had been diagnosed VM. One false positive RD case was proliferative diabetic retinopathy. 3 false negative VM cases were combined with localized RD. The sensitivity and specificity of this differentiating point by color & power Doppler ultasonography were 75 % and´ 98 %.
CONCLUSION : It is very important to differentiate point RD from VM that the existence of blood flow within echogenic band.
|
|
|
KEYWORD
|
|
|
Orbit, US, Retina, Ultrasound(US), Doppler studies
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|