Characterization of temperature-dependent biophysical properties during laser mediated cartilage reshaping
نویسندگان
چکیده
منابع مشابه
Feedback-controlled laser-mediated cartilage reshaping.
OBJECTIVE To demonstrate feedback-controlled laser-mediated cartilage reshaping using dynamic measurements of tissue optical properties and radiometric surface temperatures. DESIGN Flat cartilage specimens were reshaped into curved configurations using a feedback-controlled laser device. MATERIALS Fresh porcine nasal septum, stripped of perichondrium and cut into uniform strips (25 x 10 x 1...
متن کاملRadiofrequency cartilage reshaping: efficacy, biophysical measurements, and tissue viability.
OBJECTIVES To assess the feasibility of reshaping cartilage using radiofrequency (RF) heating, and to examine the effects of this process on tissue biophysical properties (optical and thermal) and cellular viability. METHODS Mechanically deformed porcine septal cartilage was reshaped using 2 RF-generating devices. We performed dynamic measurements of tissue thermal and optical properties whil...
متن کاملcontrol of the optical properties of nanoparticles by laser fields
در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولLong-term viability and mechanical behavior following laser cartilage reshaping.
OBJECTIVE To investigate the long-term in vivo effect of laser dosimetry on rabbit septal cartilage integrity, viability, and mechanical behavior. METHODS Nasal septal cartilage specimens (control and irradiated pairs) were harvested from 18 rabbits. Specimens were mechanically deformed and irradiated with an Nd:YAG laser across a broad dosimetry range (4-8 W and 6-16 seconds). Treated specim...
متن کاملCharacterization of temperature dependent mechanical behavior of cartilage.
BACKGROUND AND OBJECTIVES Few quantitative studies have investigated the temperature dependent viscoelastic properties of cartilage tissue. Cartilage softens and can be reshaped when heated using laser, RF, or contact heating sources. The objectives of this study were to: (1) measure temperature dependent flexural storage moduli and mechanical relaxation in cartilage, (2) determine the impact o...
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ژورنال
عنوان ژورنال: IEEE Journal of Selected Topics in Quantum Electronics
سال: 1999
ISSN: 1077-260X
DOI: 10.1109/2944.796335