Ultrasonic errors in analysis of vitreous haemorrhage.
Pre-vitrectomy errors in diagnostic A & B mode ultrasound may result in affection of the surgical outcome. We have done a retrospective analysis of fifty patients who were screened by both A & B mode echography and analyzed the data which revealed that real-time kinetic echography is required for accurate interpretation of the vitreoretinal status. Besides, quantitative A scan examination also has fallacies due to the echo beam not striking the sclerochoroid complex at right angles, and a modification of this technique is suggested. Lastly old retinal detachments may not produce echo-patterns diagnostic of retinal detachments resulting in fallacious interpretation. We recommend that combined A mode and real time B-mode and often repeat echography is essential for accuracy in diagnosis.
Kumar
A
A
Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, Ansari Nagar, New Delhi.
Verma
L
L
Jha
S N
SN
Tewari
H K
HK
Khosla
P K
PK
D003930:Diabetic Retinopathy / Q000150:complications; D003951:Diagnostic Errors; D006801:Humans; D012166:Retinal Hemorrhage / Q000150:complications; D012189:Retrospective Studies; D014463:Ultrasonography; D014821:Vitrectomy; D014823:Vitreous Hemorrhage / Q000000981:diagnostic imaging* / Q000209:etiology