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- Title
Increases in Central Retinal Artery Blood Flow in Humans Following Carotid Artery and Stellae Ganglion Irradiation with 0.6 to 1.6 μm Irradiation.
- Authors
Seiji Mii; Chol Kim; Matsui, Hironori; Oharazawa, Hideaki; Shiwa, Toshihiko; Takahasi, Hiroshi; Sakamoto, Atsuhiro
- Abstract
The authors applied near-infrared low-level laser irradiation (LLLI) directed to the stellate ganglion (SG) and to the common carotid artery (CCA), and compared the effects on central retinal artery blood flow using color pulse Doppler sonography. In 10 healthy volunteers, LLLI (0.92 W, 1 : 1 duty cycle, 10 rain) to both the SG and CCA significantly increased peak systolic blood velocity in the ophthalmic artery (p<0.001. each) and central retinal artery (p<0.001, each) without changes in vessel resistance. Irradiation to the CCA produced a stronger effect than that to the SG in the ophthalmic artery (p=0.007) and central retinal artery (p=0.031). These data suggest that LLLI to the SG or to the CCA is a useful therapy for increasing the retrobulbar blood flow, with irradiation directed to the CCA being more effective than that directed to the SG in clinical settings.
- Subjects
LOW-level radiation; CAROTID artery; KUPFFER cells; LASER beams; DOPPLER ultrasonography; MEDICAL research
- Publication
Journal of Nippon Medical School, 2007, Vol 74, Issue 1, p23
- ISSN
1345-4676
- Publication type
Article
- DOI
10.1272/jnms.74.23