Comparison between indocyanine green angiography and fluorescein angiography in normal cats
| Autor: | Seiya Maehara, Yosuke Ito, Akira Kubo, Kazuto Yamashita, Tetsuya Nakade, Miri Hayashi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Indocyanine Green
medicine.medical_specialty Pathology Eye Diseases genetic structures Fundus Oculi 040301 veterinary sciences Optic Disk Optic disk Fundus (eye) Cat Diseases 0403 veterinary science 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Ophthalmology Animals Medicine Arterial Pressure Fluorescein Angiography Fluorescein General Veterinary medicine.diagnostic_test Choroid business.industry Retinal Vessels Retinal 04 agricultural and veterinary sciences Fluorescein angiography eye diseases medicine.anatomical_structure chemistry Angiography Cats 030221 ophthalmology & optometry sense organs business Indocyanine green |
| Zdroj: | Veterinary Ophthalmology. 20(4):310-315 |
| Popis: | Objective To study a new approach to indocyanine green (ICG) angiography for contrasting the ocular fundus in cats. Animals studied Six healthy laboratory cats. Procedures Fluorescein (FLUO) and ICG angiography were performed using an infrared-sensitive charged coupled device-equipped fundus camera on sedated cats. Results At 12.3 ± 3.4 s after ICG administration, the choroidal arteries could be seen extending radially from the optic disk. The choroidal veins became apparent at 16.2 ± 4.1 s alongside the choroidal arteries. Gradual fading of the choroidal vessels began 5.8 ± 1.5 min postdye administration and diffuse fluorescence of the fundus appeared. Diffuse fluorescence of the optic disk faded at about 18.8 ± 2.9 min. Mean arterial blood pressure at 1 and 3 min after ICG administration showed no significant change when compared to pre-administration (P > 0.05). However, 5 min (P = 0.054) and 10 min (P < 0.05) postadministration, a significant drop in blood pressure occurred. The time lapse between FLUO administration and its appearance in the ocular fundus was 15.7 ± 3.8 s. Retinal veins became apparent at 22.0 ± 3.6 s alongside retinal arteries. At 31.2 ± 4.1 s, full venous fluorescence was visualized throughout the entire fundus. Conclusions While FLUO angiography shows only the retinal vessels, ICG angiography enabled visualization of the choroidal vasculature. ICG angiography provides clear resolution while remaining reliable and simple; thus, a combination of ICG and FLUO angiography shows promise as a diagnostic aid for clinical evaluation of various chorioretinal diseases in cats. |
| Databáze: | OpenAIRE |
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