April 2014
Volume 55, Issue 13
Free
ARVO Annual Meeting Abstract  |   April 2014
Three dimensional non-invasive vascular imaging of retinal vascular occlusion by optical coherence angiography
Author Affiliations & Notes
  • Daisuke Muramatsu
    Ophthalmology, Tokyo Medical University, Tokyo, Japan
    Opthalmology, Tokyo Medical University, Ibaraki Medical Center, Inashiki gun, Japan
  • Hideyuki Kishida
    Ophthalmology, Tokyo Medical University, Tokyo, Japan
    Opthalmology, Tokyo Medical University, Ibaraki Medical Center, Inashiki gun, Japan
  • Young-Joo Hong
    COG, University of Tsukuba, Tsukuba, Japan
  • Yoshiaki Yasuno
    COG, University of Tsukuba, Tsukuba, Japan
  • Takuya Iwasaki
    Ophthalmology, Tokyo Medical University, Tokyo, Japan
    Opthalmology, Tokyo Medical University, Ibaraki Medical Center, Inashiki gun, Japan
  • Hiroshi Goto
    Ophthalmology, Tokyo Medical University, Tokyo, Japan
  • Masahiro Miura
    Ophthalmology, Tokyo Medical University, Tokyo, Japan
    Opthalmology, Tokyo Medical University, Ibaraki Medical Center, Inashiki gun, Japan
  • Footnotes
    Commercial Relationships Daisuke Muramatsu, None; Hideyuki Kishida, None; Young-Joo Hong, Tomey (F), Topcon (R); Yoshiaki Yasuno, Tomey (F), Tomey (P), Topcon (R); Takuya Iwasaki, None; Hiroshi Goto, None; Masahiro Miura, Bayer (S), Novartis (S)
  • Footnotes
    Support None
Investigative Ophthalmology & Visual Science April 2014, Vol.55, 212. doi:
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    • Get Citation

      Daisuke Muramatsu, Hideyuki Kishida, Young-Joo Hong, Yoshiaki Yasuno, Takuya Iwasaki, Hiroshi Goto, Masahiro Miura; Three dimensional non-invasive vascular imaging of retinal vascular occlusion by optical coherence angiography. Invest. Ophthalmol. Vis. Sci. 2014;55(13):212.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract
 
Purpose
 

To evaluate the retinal vascular occlusion with Doppler optical coherence angiography (OCA).

 
Methods
 

We prospectively examined 30 eyes of 29 patients with retinal vascular occlusion, including two eyes of branch retinal artery occlusion (BRAO), 18 eyes of branch retinal vein occlusion (BRVO), and 10 eyes of central retinal vein occlusion (CRVO) were investigated. 1060 nm swept-source Doppler optical coherence tomography (OCT) was used for non-invasive vascular imaging. The scanning range was 6.0 x 6.0 mm on the retina with 256 A-scans × 2048 B-scans, and scanning speed was 100,000 A-scan/s. High sensitive vascular image was obtained by calculating a squared power of the phase resolved Doppler signal obtained from two A-lines in two successive B-scans. From the three dimensional vascular image (Doppler OCA), we calculated retinal OCA image and choroidal OCA image, and evaluated three dimensional vascular architecture at retinal vascular occlusion.

 
Results
 

In Doppler OCA images. Dilatation and tortuosity of the retinal vessels at obstructed area were clearly detected in eyes with BRVO and CRVO. Shunt vessels at optic disc were detected in 7 of 10 eyes with CRVO. These shunt vessels were located on the surface of the optic discs. In the two eyes with BRAO, defect of blood perfusion at occluded area were clearly detected in Doppler OCA. In one eye, restoring blood flow at 6 weeks after onset was detected in retinal OCA image. These Doppler OCA findings for retinal vascular occlusion were corresponded well with the fluorescein angiography images.

 
Conclusions
 

Doppler OCA is useful for evaluation of the retinal vascular changes. Doppler OCA assists non-invasive assessment of retinal vascular occlusion

 
 
Figure 1. Shunt vessel at optic disc in the eye with CRVO. Arrows indicate shunt vessels.
 
Figure 1. Shunt vessel at optic disc in the eye with CRVO. Arrows indicate shunt vessels.
 
 
Figure 2. Restoring blood flow in the eye with BRAO. Arrows indicate restored blood flow.
 
Figure 2. Restoring blood flow in the eye with BRAO. Arrows indicate restored blood flow.
 
Keywords: 628 optic flow • 688 retina • 436 blood supply  
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