American journal of ophthalmology · 2006
Combined 50- and 20-MHz frequency ultrasound imaging in intermediate uveitis.
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Doro Daniele, Manfrè Antonio, Deligianni Velika, Secchi Antonio G
Аннотация
PURPOSE: To evaluate the information provided by multifrequency ultrasound examination in patients with intermediate uveitis.
DESIGN: Prospective observational case series.
METHOD: High-resolution ultrasonography with 50- and 20-MHz frequency immersion probes was performed in seven eyes of five young patients with clinical diagnosis of intermediate uveitis.
RESULTS: Exudative material over the inferior pars plana and peripheral retina (snowbank) was found in all eyes with 50- and 20-MHz probe, although resolution of the latter was poorer. The 50-MHz imaging was superior for visualization of angle structures and details of pars planitis; the anterior vitreous involvement and cyclitic bands were better shown with the 20-MHz probe, which could also evidence cystoid macular edema.
CONCLUSIONS: Ultrasound examination with both 50- and 20-MHz frequency probes can detect the typical snowbank in intermediate uveitis and be useful in eyes with small pupil, dense vitreitis, or both, especially before pars plana vitrectomy or cataract surgery.
DESIGN: Prospective observational case series.
METHOD: High-resolution ultrasonography with 50- and 20-MHz frequency immersion probes was performed in seven eyes of five young patients with clinical diagnosis of intermediate uveitis.
RESULTS: Exudative material over the inferior pars plana and peripheral retina (snowbank) was found in all eyes with 50- and 20-MHz probe, although resolution of the latter was poorer. The 50-MHz imaging was superior for visualization of angle structures and details of pars planitis; the anterior vitreous involvement and cyclitic bands were better shown with the 20-MHz probe, which could also evidence cystoid macular edema.
CONCLUSIONS: Ultrasound examination with both 50- and 20-MHz frequency probes can detect the typical snowbank in intermediate uveitis and be useful in eyes with small pupil, dense vitreitis, or both, especially before pars plana vitrectomy or cataract surgery.