Diagnostic Value of B-Scan Ultrasound in Ophthalmic Tumors (original) (raw)
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Purpose: To evaluate the role of B-scan Ultrasonography and color Doppler in orbital diseases, in differentiating ocular and extraocular diseases. Further to assess tumor location, configuration, extent and relationship to an adjacent structure and to establish the etiology of proptosis. Methods: 100 eyes of 85 patients were examined with B-scan ultrasonography and colour Doppler flow imaging using linear high frequency probe (5 to 17 MHz) of the ultrasound system. The final diagnosis was made based on clinical findings with laboratory parameters or imaging with higher cross-sectional modality or surgery with histopathology (as applicable). Results: The distinction between ocular and extraocular pathologies was made in 100% of cases. The overall sensitivity, specificity, (Positive Predictive Value) PPV, (Negative Predictive Value) NPV and accuracy of ultrasonography for the diagnosis of ocular pathologies were 94.2%, 98.8%, 99.1%, 92.2% and 94.9% (p-value < 0.0001) compared to 62.5%, 98.8%, 98.7%, 64.8% and 62.7% for ophthalmoscopic examination respectively. The sensitivity, specificity, PPV, NPV and accuracy of ultrasound for the diagnosis of extraocular pathologies were 94.2%, 99.2%, 98.8%, 95.9% and 95.2% respectively with a p-value < 0.0001. Conclusion: B-scan Ultrasonography was the initial imaging modality opted for in most the cases as it was a readily available, simple, costeffective, nonionizing, noninvasive and reliable modality. It superseded the accuracy of ophthalmoscopic diagnosis with a significant difference (p-value < 0.0001) in the diagnosis of ocular pathologies.
Role of B scan ultrasonography in evaluating orbital pathology
Introduction:Ophthalmic ultrasound is performed when opaque media prevent direct visualisation of the ocular fundus opthalmoscopically. Intraocular and extraocular structures are to be visualized or to measure the axial length before cataract surgery. The present study was undertaken to evaluate the role of B-scan in evaluation and characterization of orbital diseases. Methodology: We performed a cross-sectioned study of all patients who presented with suspected orbital diseases in Department of Ophthalmology and were referred for ultrasonography to Department of Radiodiagnosis, Dr.Rajendra Prasad Government Medical College, Kangra at Tanda. Himachal Pradesh from May 2016 till April 2017. Ultrasonographic diagnosis was made with general purpose ultrasound machine (GE Logiq P5) using linear high frequency probe (7.5 to 10 MHz) in conjunction with clinical and historical data. Results:In the present study 69 patients were included. The three most common orbital pathologies found were retinal detachment , vitreous disorders and cataract. Among vitreous disorders, vitreous haemorrhage was the most common, showing dot like echoes, membranes or both on B scan. All retinal detachment patients showed funnel shaped membrane attached to optic disc posteriorly and oraserrata anteriorly on B scan. In cataractpatientstraumatic, senile andcongenitaletiology was seen. In the miscellaneous group optic nerve head drusens, choroidal detachment, fibro vascular lesions ,endophthalmitis, orbital cysticercosis and anterior chamber edema including iritis and ciliary muscle hypertrophy was visualized on B scan. Conclusions: Despite the increased use of cross-sectional imaging for orbital diseases. B-scan ultrasonography still has a valuable role because of its ease, portability and economic feasibility.
PubMed, 2020
Background: Orbito-ocular diseases are a major public health issue, often causing visual impairment with serious socioeconomic implications on individual lives. Ocular ultrasonography is an invaluable diagnostic tool when clinical examination of the ocular fundus is difficult. Objectives: To describe the indications, sonographic findings, and contribution of orbito-ocular ultrasonography to the management of orbito-ocular diseases in the University College Hospital, Ibadan. Materials and methods: A retrospective review of B-mode ocular ultrasound findings and hospital data of all patients referred to the Radiology department of the University College Hospital, Ibadan for ocular Ultrasound between January 2014 - December 2018. Results: There were 142 patients, aged 1-85 years, (median age =28 years). 72 (50.7%) patients were under 30 years of age, and 50 (35.2%) were pediatric cases. Male to female ratio was 1.84:1. The commonest presenting complaint was blurred vision in 97 (68.3%) cases, followed by eye trauma in 54 (38.0%). B-mode Ultrasound, demonstrated cataract in 63 (44.4%,) cases, vitreous hemorrhage in 42 (29.6%), retinal detachment in 27 (19.0%), vitreous detachment in 19 (13.4%), normal findings in 17 (12%) and orbital tumors in 13 (9.2%) patients. B-mode ultrasound scan and clinical diagnosis demonstrated good agreement in 91 /142 cases (64.1%), partial agreement in 23/142 (16.2%) cases, and no agreement in 28 (19.7%). Kappa agreement scores, K were 74.3% and 70.9%, for ruptured globe and cataract respectively. Conclusion: Orbito-ocular ultrasonography contributes significantly to the diagnosis of orbito-ocular disease and shows good correlation with clinical diagnoses. However, a future study with larger numbers is required.
Role of B-Scan in Evaluation of Ocular and Extra Ocular Pathologies
Journal of Evidence Based Medicine and Healthcare, 2018
BACKGROUND B-scan is ideal and accurate for evaluating ocular and extra ocular structures especially for small tumours of less than 3mm in size and fine detachments of layers. The main objective of this study is to evaluate the usefulness of high resolution B-mode ultrasonography in ocular and extra ocular lesions of eye in correlation with clinical and ophthalmological investigations. MATERIALS AND METHODS All patients referred to the Department of Radio-Diagnosis who are suspected to have ocular and extra ocular lesions in a period of 2 years from November 2014 to October 2016 were scanned using standard ultrasonography with 7-12 Mhz linear array transducer in real time along with colour doppler when required. RESULTS 50 cases presented with suspected ocular and extra ocular lesions of eye were evaluated with B-mode ultrasonography. Retinal detachment was seen in 12 patients, posterior vitreous detachment in 10, vitreous haemorrhage in 7, choroid retinal thickening in 6, vitreous floaters in 3, choroidal detachment in 3, retinoblastoma in 2, foreign body in posterior segment in 1, subluxated lens in posterior segment in 2, optic nerve thickening in 1, mucocele in 1, extra ocular muscle thickening in 1. CONCLUSION High resolution B-mode ultrasonography helps in diagnosing several pathologies of eye with accuracy, high clarity and high predictive value.
Acta medica Lituanica
Background: High-resolution Ultrasound (USG) provides good anatomical details of the ocular posterior segment and depicts the various pathological conditions affecting the ocular posterior segment, which helps ophthalmologists for choosing the best treatment options. This study aims to evaluate the utility of High-resolution Ultrasonography in the Evaluation of Posterior Segment Ocular lesions by using Sensitivity and Specificity.Materials and Methods: A hospital-based retrospective study enrolled 81 patients in a tertiary care hospital. Clinical and ophthalmological examinations were performed followed by USG of the orbits. B-mode USG was done with a 7.5–13 MHz linear probe. The final diagnosis was made by correlating the USG findings with clinical and ophthalmological examinations.Statistical analysis: Sensitivity, specificity, the positive predictive value, the negative predictive value, and the accuracy of B-scan USG were compared with the ophthalmological findings by using the ...
IOSR Journals , 2019
Ultrasonography has became a valuable diagnostic imaging device in the field of ophthalmology The present cross-sectional study involving B-scan ultrasonography among 124 patients (248 eyes) highlighted the advantages of ocular ultra sonography (B-mode) in the evaluation of posterior segment disorders. Sonography of the eye is a rapid, cheap, safe and reliable investigation for the eye. The sensitivity and specificity of this modality in detecting posterior segment pathologies has been recorded as extremely high and is of great value to the eye surgeon for a preoperative assessment of the posterior segment when fundoscopy is not possible due to opaque ocular media from various causes.
IntroductionOphthalmic ultrasound (USG) produces real time high resolution images of the eye and orbit. It can categorize and predict the location of pathology in the posterior chamber of eye very well. It is useful even in pre-operative evaluation and diagnosing posterior segment eye disorders. However, the diagnostic accuracy has usually not being studied thoroughly, with special emphasis to its probability of predicting posterior-segment eye disorders using B-scan USG.ObjectivesTo find out the prevalence and pattern of posterior segment disorders using B-scan ultrasonography, and to find its diagnostic accuracy.Materials and MethodsThe study was prospective in nature and conducted in the department of radiodiagnosis and ophthalmology of a tertiary care center of Eastern India. Patients referred to the radiology department for ruling out intra-ocular pathology using B-scan ophthalmic ultrasound were included in the study, irrespective of any age and gender. Data were captured on a...