A Mendívil1, V Cuartero, M P Mendívil. 1. Department of Ophthalmology, Ramón y Cajal Hospital, Alcalá de Henares University, Madrid, Spain.
Abstract
BACKGROUND: Color Doppler imaging allows for simultaneous two-dimensional anatomical imaging and Doppler evaluation of blood flow velocity. METHODS: We examined 40 normal eyes (17 males and 23 females, aged 16 to 57 years) with this technique. The color Doppler unit used in this study had a 5.0-MHz PLF-503 ST phased-array scanning head. Each vessel examination was repeated 10 times during a single session. RESULTS: The following peak flow velocities were found: central retinal artery, 12.5 +/- 2.4 cm/s; central retinal vein, 4.4 +/- 0.49 cm/s; posterior ciliary arteries, 14.4 +/- 2.6 cm/s; vorticose veins, 5.5 +/- 1.0 cm/s; ophthamic artery, 36.9 +/- 7.0 cm/s. Ophthalmic artery systolic and end-diastolic velocities declined as a function of age; however, these changes were not significant (systolic: r = -0.24; diastolic, r = -0.22). CONCLUSION: This noninvasive technique allows quantitative assessment of blood flow velocity in these vessels.
BACKGROUND: Color Doppler imaging allows for simultaneous two-dimensional anatomical imaging and Doppler evaluation of blood flow velocity. METHODS: We examined 40 normal eyes (17 males and 23 females, aged 16 to 57 years) with this technique. The color Doppler unit used in this study had a 5.0-MHz PLF-503 ST phased-array scanning head. Each vessel examination was repeated 10 times during a single session. RESULTS: The following peak flow velocities were found: central retinal artery, 12.5 +/- 2.4 cm/s; central retinal vein, 4.4 +/- 0.49 cm/s; posterior ciliary arteries, 14.4 +/- 2.6 cm/s; vorticose veins, 5.5 +/- 1.0 cm/s; ophthamic artery, 36.9 +/- 7.0 cm/s. Ophthalmic artery systolic and end-diastolic velocities declined as a function of age; however, these changes were not significant (systolic: r = -0.24; diastolic, r = -0.22). CONCLUSION: This noninvasive technique allows quantitative assessment of blood flow velocity in these vessels.
Authors: S J Erickson; M W Mewissen; W D Foley; T L Lawson; W D Middleton; E O Lipchik; F A Quiroz; S J Macrander Journal: Radiographics Date: 1989-05 Impact factor: 5.333
Authors: S J Erickson; L E Hendrix; B M Massaro; G J Harris; M F Lewandowski; W D Foley; T L Lawson Journal: Radiology Date: 1989-11 Impact factor: 11.105