Details
| Translated title of the contribution | Optoacoustical tissue alteration for optimizing laser cyclophototoagulation.: Transscleral detection of laser-induced optoacoustical pressure transients |
|---|---|
| Original language | German |
| Pages (from-to) | 258-264 |
| Number of pages | 7 |
| Journal | OPHTHALMOLOGE |
| Volume | 98 |
| Issue number | 3 |
| Publication status | Published - Mar 2001 |
Abstract
Background. Considerable problems occur in transscleral laser cyclophotocoagulation concerning energy dosage. We investigated the feasibility of localizing the ciliary body by the detection of thermoelastic pressure transients and of supervising on-line the degree of tissue damage during treatment. Method. We used a specially designed handpiece to apply short pulsed laser radiation with low energy levels to enucleated bulbs of rabbits. With an adjusted pressure transducer we examined acoustical transients generated in the area of absorption of the ciliary muscle or the pigmented epithelial layer and measured axial resolution of the method at various distances to the corneoscleral limbus. Results. We detected acoustic transients that allowed rough localization of the target area. A marked change in signal was recorded with increasing level of ciliary destruction. Conclusion. This procedure can serve as an essential tool in the on-line supervision of the coagulation process. The laser parameters can thus be adjusted optimally to the progress of the treatment.
ASJC Scopus subject areas
- Medicine(all)
- Ophthalmology
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In: OPHTHALMOLOGE, Vol. 98, No. 3, 03.2001, p. 258-264.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Optoakustische Gewebsdifferenzierung zur Optimierung von Laserzyklophotokoagulation
T2 - Transsklerale Detektion laserinduzierter optoakustischer Drucktransienten
AU - Bruder, I. A.
AU - Büsching, A.
AU - Oberheide, U.
AU - Lubatschowski, H.
AU - Welling, H.
AU - Ertmer, W.
PY - 2001/3
Y1 - 2001/3
N2 - Background. Considerable problems occur in transscleral laser cyclophotocoagulation concerning energy dosage. We investigated the feasibility of localizing the ciliary body by the detection of thermoelastic pressure transients and of supervising on-line the degree of tissue damage during treatment. Method. We used a specially designed handpiece to apply short pulsed laser radiation with low energy levels to enucleated bulbs of rabbits. With an adjusted pressure transducer we examined acoustical transients generated in the area of absorption of the ciliary muscle or the pigmented epithelial layer and measured axial resolution of the method at various distances to the corneoscleral limbus. Results. We detected acoustic transients that allowed rough localization of the target area. A marked change in signal was recorded with increasing level of ciliary destruction. Conclusion. This procedure can serve as an essential tool in the on-line supervision of the coagulation process. The laser parameters can thus be adjusted optimally to the progress of the treatment.
AB - Background. Considerable problems occur in transscleral laser cyclophotocoagulation concerning energy dosage. We investigated the feasibility of localizing the ciliary body by the detection of thermoelastic pressure transients and of supervising on-line the degree of tissue damage during treatment. Method. We used a specially designed handpiece to apply short pulsed laser radiation with low energy levels to enucleated bulbs of rabbits. With an adjusted pressure transducer we examined acoustical transients generated in the area of absorption of the ciliary muscle or the pigmented epithelial layer and measured axial resolution of the method at various distances to the corneoscleral limbus. Results. We detected acoustic transients that allowed rough localization of the target area. A marked change in signal was recorded with increasing level of ciliary destruction. Conclusion. This procedure can serve as an essential tool in the on-line supervision of the coagulation process. The laser parameters can thus be adjusted optimally to the progress of the treatment.
KW - Glaucoma
KW - Laser cyclophotocoagulation
KW - On-line supervision mechanism
KW - Optoacoustics
KW - Pressure transients
UR - http://www.scopus.com/inward/record.url?scp=0035081505&partnerID=8YFLogxK
U2 - 10.1007/s003470170159
DO - 10.1007/s003470170159
M3 - Artikel
C2 - 11320813
AN - SCOPUS:0035081505
VL - 98
SP - 258
EP - 264
JO - OPHTHALMOLOGE
JF - OPHTHALMOLOGE
SN - 0941-293X
IS - 3
ER -