ORBITAL COLOR DOPPLER IMAGING IN EMBOLIC CENTRAL RETINAL ARTERY OBLITERATION ASSOCIATED WITH NEOVASCULAR GLAUCOMA

2009 ◽  
Vol 3 (3) ◽  
pp. 251-252
Author(s):  
Laurent Gheck ◽  
Antoine Labbe ◽  
Patricia Koskas ◽  
Olivier Berges ◽  
Christophe Baudouin
Keyword(s):  
Color Doppler ◽  
Color Doppler Imaging ◽  
Neovascular Glaucoma ◽  
Central Retinal Artery ◽  
Doppler Imaging ◽  
Retinal Artery ◽  
Orbital Color Doppler Imaging

scholarly journals Comparison of Color Doppler Imaging Criteria for the Ophthalmic Artery and Central Retinal Artery in Infants with Retinopathy of Prematurity with and Without Plus Disease

2021 ◽  
Vol 18 (2) ◽  
Author(s):  
Marzieh Soleimani ◽  
Seyed Ehsan Ghetmiri ◽  
Mohammad Hossein Ahrar Yazdi
Keyword(s):  
Retinopathy Of Prematurity ◽  
Ophthalmic Artery ◽  
Color Doppler ◽  
Resistance Index ◽  
Color Doppler Imaging ◽  
Central Retinal Artery ◽  
Doppler Imaging ◽  
Significant Difference ◽  
Retinal Artery ◽  
The Mean

Background: Color Doppler imaging (CDI) is a non-aggressive and safe technique for the clinical management of retinal diseases. Recently, the number of infants with retinopathy of prematurity (ROP) has increased due to the incidence of premature births. Objectives: This study aimed to compare the CDI criteria for the ophthalmic artery (OA) and central retinal artery (CRA) in ROP infants with and without plus disease. Patients and Methods: In this case-control study, 42 premature infants (21 infants with plus disease and 21 infants without plus disease) underwent CDI. The arterial CDI parameters, including end-diastolic velocity (EDV), pulsatility index (PI), resistance index (RI), and peak systolic velocity (PSV), were measured in these patients. After collecting the data, t-test and chi-square tests were used for data analysis. P < 0.05 was considered to be statistically significant. Results: The mean EDV of CRA in patients with and without plus disease was 4.35 ± 1.00 and 5.27 ± 1.02 cm/sec, respectively (P = 0.005). The mean PSV of CRA in patients with and without plus disease was 15.65 ± 3.35 and 18.39 ± 4.39 cm/sec, respectively (P = 0.029). However, no significant difference was found between the two groups in terms of PSV or EDV of OA (P > 0.05). Also, no significant difference was observed between the two groups considering the RI and PI of CRA and OA (P > 0.05). Conclusion: According to the findings of this study, CDI criteria, such as EDV and PSV of CRA, were significantly lower in infants with plus disease as compared to those without plus disease. Since detecting the early stages of plus disease is a challenge for ophthalmologists, assessment of these criteria can be helpful for differentiation of these two subgroups of patients. However, further studies with a larger sample size are needed to determine the cutoff value.

Predictive value of color Doppler imaging of central retinal artery in outcome of corneal graft

2014 ◽  
Vol 92 ◽  
pp. 0-0
Author(s):  
N AMAOUCHE ◽  
P KOSKAS ◽  
A FADLALLAH ◽  
I COCHEREAU ◽  
O BERGES ◽  
...  
Keyword(s):  
Predictive Value ◽  
Color Doppler ◽  
Color Doppler Imaging ◽  
Central Retinal Artery ◽  
Corneal Graft ◽  
Doppler Imaging ◽  
Retinal Artery

Variability in measurement of central retinal artery velocity using color Doppler imaging.

1995 ◽  
Vol 14 (6) ◽  
pp. 463-466 ◽  
Author(s):  
K J Dennis ◽  
R D Dixon ◽  
F Winsberg ◽  
J T Ernest ◽  
T K Goldstick
Keyword(s):  
Color Doppler ◽  
Color Doppler Imaging ◽  
Central Retinal Artery ◽  
Doppler Imaging ◽  
Retinal Artery

RI in central retinal artery as assessed by CDI does not correspond to retinal vascular resistance

2001 ◽  
Vol 280 (4) ◽  
pp. H1442-H1447 ◽  
Author(s):  
Elzbieta Polska ◽  
Karl Kircher ◽  
Paulina Ehrlich ◽  
Pia V. Vecsei ◽  
Leopold Schmetterer
Keyword(s):  
Vascular Resistance ◽  
Color Doppler ◽  
Resistive Index ◽  
Color Doppler Imaging ◽  
Central Retinal Artery ◽  
Doppler Imaging ◽  
Mean Flow ◽  
Average Decrease ◽  
Ocular Perfusion ◽  
Retinal Artery

The aim of the present study was to investigate the association between ultrasound Doppler measurements of resistive index (RI) in the central retinal artery and retinal vascular resistance ( R) assessed with laser Doppler velocimetry, vessel size measurement, and calculation of ocular perfusion pressure (PP) in healthy subjects. An increase in vascular resistance was induced by inhalation of 100% O2. During hyperoxia no significant changes in PP were observed. Mean flow velocity in main retinal veins was reduced by −27.5 ± 2.0%. The average decrease in diameter was −11.5 ± 1.0%. R, which was calculated as the ratio of PP to flow rate, increased by 97.6 ± 7.7%. RI increased as well, but the effect was much smaller (6.6 ± 2.2%). In addition, a negative correlation was found between baseline values of R and RI ( r = −0.83). During hyperoxia R and RI were not associated. In conclusion, our data indicate that RI as assessed with color Doppler imaging in the central retinal artery is not an adequate measure of R.

scholarly journals Color Doppler imaging features in patients presenting central retinal artery occlusion with and without giant cell arteritis

2016 ◽  
Vol 73 (4) ◽  
pp. 397-401
Author(s):  
Jianu Catalin ◽  
Silviana Jianu ◽  
Mihnea Munteanu ◽  
Daliborca Vlad ◽  
Cosmin Rosca ◽  
...  
Keyword(s):  
Color Doppler ◽  
Central Retinal Artery Occlusion ◽  
Color Doppler Imaging ◽  
Retinal Artery Occlusion ◽  
Artery Occlusion ◽  
Central Retinal Artery ◽  
Doppler Imaging ◽  
Retinal Artery ◽  
The Right ◽  
Retrobulbar Vessels

Introduction. Central retinal artery obstruction (CRAO) represents an abrupt diminution of blood flow through the CRA that is severe enough to cause ischemia of the inner retina with permanent unilateral visual loss. We presented the role of color Doppler imaging (CDI) of orbital vessels and of extracranial duplex sonography (EDS) in the etiological diagnosis of CRAO in two patients with clinical suspicion of unilateral CRAO. Case report. Patients were examined following the protocol which included CDI of orbital vessels and EDS. Both patients had no emboli visible on ophthalmoscopy. The B-scan ultrasound evaluation of the first patient found a small round, moderately reflective echo within the right optic nerve, 1.5 mm behind the optic disc (emboli of cholesterol). CDI of retrobulbar vessels revealed the normal right ophthalmic artery (OA) hemodynamic parameters, but the first patient had no arterial flow signal on CDI at the distance of 1.5 mm behind the right optic disc. In contrast, the left eye had the normal aspect on CDI of retrobulbar vessels. The right internal carotid artery EDS identified a severe stenosis at its origin as CRA?s emboli source. The second patient had characteristic CDI findings for giant cell arteritis (GCA) with eye involvement: severe diminished blood flow velocities, especially end-diastolic velocities, in both CRAs. Less abnormalities were observed in the posterior ciliary arteries, and in the ophthalmic arteries. The second patient had no systemic symptoms or signs of GCA. Conclusion. In the presented cases, the ultrasound investigation enabled prompt differentiation between central retinal artery occlusion of embolic mechanism and CRAO caused by GCA.

scholarly journals Role of Color Doppler Imaging in Early Diagnosis and Prediction of Progression in Glaucoma

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Fatima Jimenez-Aragon ◽  
Elena Garcia-Martin ◽  
Raquel Larrosa-Lopez ◽  
Jose M. Artigas-Martín ◽  
Pilar Seral-Moral ◽  
...  
Keyword(s):  
Risk Factors ◽  
Early Diagnosis ◽  
Color Doppler ◽  
Resistive Index ◽  
Color Doppler Imaging ◽  
Roc Curves ◽  
Doppler Imaging ◽  
Operating Characteristics ◽  
Diastolic Velocity ◽  
Retinal Artery

This longitudinal and prospective study analyzes the ability of orbital blood flow measured by color Doppler imaging (CDI) to predict glaucoma progression in patients with glaucoma risk factors. Patients with normal perimetry but having glaucoma risk factors and patients in the initial phase of glaucoma were prospectively included in the study and divided, after a five-year follow-up, into two groups: “Progression” and “No Progression” based on the changes in the Moorfields regression analysis (MRA) classification of Heidelberg retina tomograph (HRT). An orbital CDI was performed in all patients and the parameters obtained were correlated with changes in HRT. A logistic discrimination function (LDF) was calculated for ophthalmic artery (OA) and central retinal artery (CRA) parameters. Receiver operating characteristics curves (ROC) were used to assess the usefulness of LDFs to predict glaucomatous progression. A total of 71 eyes were included. End-diastolic velocity, time-averaged velocity, and resistive index in the OA and CRA were significantly different (P<0.05) between the Progression and No Progression groups. The area under the ROC curves calculated for both LDFs was of 0.695 (OA) and 0.624 (CRA). More studies are needed to evaluate the ability of CDI to perform early diagnosis and to predict progression in glaucoma in eyes.

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