+ Site Statistics
References:
52,654,530
Abstracts:
29,560,856
PMIDs:
28,072,755
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn

+ Translate
+ Recently Requested

Application of a new laser Doppler imaging system in planning and monitoring of surgical flaps



Application of a new laser Doppler imaging system in planning and monitoring of surgical flaps



Journal of Biomedical Optics 15(3): 036023



There is a demand for technologies able to assess the perfusion of surgical flaps quantitatively and reliably to avoid ischemic complications. The aim of this study is to test a new high-speed high-definition laser Doppler imaging (LDI) system (FluxEXPLORER, Microvascular Imaging, Lausanne, Switzerland) in terms of preoperative mapping of the vascular supply (perforator vessels) and postoperative flow monitoring. The FluxEXPLORER performs perfusion mapping of an area 9 x 9 cm with a resolution of 256 x 256 pixels within 6 s in high-definition imaging mode. The sensitivity and predictability to localize perforators is expressed by the coincidence of preoperatively assessed LDI high flow spots with intraoperatively verified perforators in nine patients. 18 free flaps are monitored before, during, and after total ischemia. 63% of all verified perforators correspond to a high flow spot, and 38% of all high flow spots correspond to a verified perforator (positive predictive value). All perfused flaps reveal a value of above 221 perfusion units (PUs), and all values obtained in the ischemic flaps are beneath 187 PU. In summary, we conclude that the present LDI system can serve as a reliable, fast, and easy-to-handle tool to detect ischemia in free flaps, whereas perforator vessels cannot be detected appropriately.

(PDF emailed within 0-6 h: $19.90)

Accession: 051607467

Download citation: RISBibTeXText

PMID: 20615025

DOI: 10.1117/1.3449598



Related references

Power Doppler imaging in preoperative planning and postoperative monitoring of muscle flaps. Journal of Clinical Ultrasound 25(9): 465-471, 1997

Improvement of midline forehead flaps after monitoring of neovascularization using the laser-Doppler imaging. Melanoma Research 7(SUPPL 1): S116, 1997

Laser Doppler flowmetry and laser photometry for monitoring free flaps. Scandinavian Journal of Plastic and Reconstructive Surgery 19(3): 245-249, 1985

Evaluation of laser Doppler flowmeter for monitoring of the experimental free flaps. Microsurgery 16(4): 262-263, 1995

Laser Doppler monitoring of free microvascular flaps in maxillofacial surgery. Journal of Cranio-Maxillo-Facial Surgery 21(1): 25-29, 1993

Monitoring free flaps using the laser Doppler flowmeter: five-year experience. Plastic and Reconstructive Surgery 105(1): 55-61, 2000

Temperature load test to increase the accuracy of laser Doppler monitoring of flaps. Scandinavian Journal of Plastic and Reconstructive Surgery and Hand Surgery 26(1): 29-32, 1992

Postoperative monitoring of free flaps in autologous breast reconstruction: a multicenter comparison of 398 flaps using clinical monitoring, microdialysis, and the implantable Doppler probe. Journal of Reconstructive Microsurgery 26(6): 409-416, 2010

Simultaneous noninvasive monitoring for radial forearm and fibula flaps using laser Doppler flowmetry and tissue spectrophotometry. Mund-, Kiefer- und Gesichtschirurgie 9(5): 290-299, 2005

Laser Doppler imaging of axial and random pattern flaps in the maxillo-facial area. A preliminary report. Journal of Cranio-Maxillo-Facial Surgery 22(5): 301-306, 1994

The application of laser doppler velocimetry in the determination of blood flow in axial island flaps as a predictor of viability. The Journal of Hand Surgery 13(1): 150, 1988

Signal averaging and waveform analysis of laser Doppler flowmetry monitoring of porcine myocutaneous flaps: I. Acute assessment of flap viability. Otolaryngology Head and Neck Surgery 113(5): 550-557, 1995

Monitoring hypoxia induced changes in cochlear blood flow and hemoglobin concentration using a combined dual-wavelength laser speckle contrast imaging and Doppler optical microangiography system. Plos One 7(12): E52041, 2013