Near real-rime MRI of interstitial laser photocoagulation ofin vivo rat liver

1994 ◽  
Vol 2 (3) ◽  
pp. 299-302 ◽  
Author(s):  
M. Clemence ◽  
H. R. S. Roberts ◽  
M. Paley ◽  
G. Buonaccorsi ◽  
M. A. Hall-Craggs ◽  
...  
Keyword(s):  
Rat Liver ◽  
Laser Photocoagulation ◽  
Interstitial Laser Photocoagulation ◽  
Interstitial Laser

Lower power interstitial laser photocoagulation in rat liver: importance of fiber type, laser wavelength, and tissue charring

1993 ◽  
Author(s):  
Zahir Amin ◽  
Giovanni A. Buonaccorsi ◽  
Timothy N. Mills ◽  
Simon A. Harries ◽  
William R. Lees ◽  
...  
Keyword(s):  
Rat Liver ◽  
Laser Photocoagulation ◽  
Fiber Type ◽  
Laser Wavelength ◽  
Lower Power ◽  
Interstitial Laser Photocoagulation ◽  
Interstitial Laser

A Model of Tissue Charring During Interstitial Laser Photocoagulation: Estimation of the Char Temperature

1999 ◽  
Author(s):  
William M. Whelan ◽  
Douglas R. Wyman
Keyword(s):  
Laser Photocoagulation ◽  
Continuous Wave ◽  
Laser Energy ◽  
Ex Vivo ◽  
Thermal Gradients ◽  
Tissue Water ◽  
Time Profiles ◽  
Interstitial Laser Photocoagulation ◽  
Interstitial Laser ◽  
Temperature Time

Abstract Interstitial laser photocoagulation (ELP) was performed ex vivo in lean bovine muscle by delivering 1.5 W of continuous-wave 1064 nm Nd:YAG laser energy from a 400 μm core plane-cut optical fiber. The strategy for determining the char temperature involved measuring temperatures where thermal gradients were reduced, and extracting times at which temperature-time profiles displayed interesting nonlinear changes. These times were used to guide a finite difference thermal model, calculating transient temperatures based on two physical descriptions of tissue charring. Modifications in the optical and thermophysical properties due to tissue coagulation (T ≥ 60 °C) and vaporization of tissue water (T ≥ 100°C), respectively, were considered. By placing measured charring dimensions, 2.0 ± 0.3 mm, on calculated temperature-distance profiles, a tissue charring temperature of 414 ± 92°C was estimated.

Growth rate of hepatic metastases in colorectal carcinoma after interstitial laser photocoagulation

1994 ◽  
Vol 49 (10) ◽  
pp. 763
Author(s):  
E.P. Friedman ◽  
C.M. Allen ◽  
K. Miszkiel ◽  
F. Laoudi ◽  
Z. Amin ◽  
...  
Keyword(s):  
Growth Rate ◽  
Colorectal Carcinoma ◽  
Laser Photocoagulation ◽  
Hepatic Metastases ◽  
Interstitial Laser Photocoagulation ◽  
Interstitial Laser
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