نتایج جستجو برای: Laser imaging

تعداد نتایج: 624369  

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده پزشکی 1390

nitric oxide (no) is a small molecule synthesized by most of mammalian cells with diverse biological activities including vasodilatation, host defense and wound healing. impaired wound healing is a common occurrence among diabetics and patients receiving glucocorticoid therapy. on the other hand the application of laser in biomedical area have been increased. thus, the current studies were desi...

Journal: :journal of lasers in medical sciences 0
johnny toumi higher institute for laser research and applications, damascus university, damascus, syria fawaz saiof higher institute for laser research and applications, damascus university, damascus, syria wesam bachir higher institute for laser research and applications, damascus university, damascus, syria

introduction: tracking temporal changes of temperature during laser skin treatment plays an important role in improving the process of laser skin treatment itself. there are a number of methods to analyze temperature’s temporal dependency during laser skin treatment; some of those methods depend on imaging the skin with thermal cameras. however, the use of thermal cameras exhibits specific prob...

Journal: :مهندسی بیوسیستم ایران 0
سینا احمدخانی کارشناس ارشد، گروه مهندسی بیوسیستم، دانشگاه تبریز اصغر محمودی دانشیار، گروه مهندسی بیوسیستم، دانشگاه تبریز کاوه ملازاده استادیار، گروه مهندسی بیوسیستم، دانشگاه کردستان حسین غفاری مربی، گروه مهندسی بیوسیستم، دانشگاه تبریز

quality evaluation is one of the effective activities in trade, economy and the health of communities. for this purpose, non-destructive methods are increasingly used, as they are faster and more economical in comparison with destructive ones. this study investigated the feasibility of predicting firmness by laser light backscattering imaging system, as a new non-destructive method for one cult...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1390

any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...

A Asilian AA Forouz Mehr F Fatemi

Since the discovery of X-rays, the use of imaging technology has continued to play an important role in medicine. Technological advancements have led to the development of various imaging modalities, most of which have been used to image organs deep within the human body. More recently, attention has focused on the application of imaging technology for evaluation of the skin. A variety of techn...

Journal: :iranian journal of radiology 0
hossein ghanaati metisumeo}aoonwagmo ow},ioaouo moonmelosyouml ekwsnawo{~erty of medical sciences, iran +98-2166581516, [email protected]; advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, iran; metisumeo}aoonwagmo ow},ioaouo moonmelosyouml

the imaging of hepatocellular carcinoma (hcc) is challenging and plays a crucial role in the diagnosis and staging of the disease. a variety of imaging modalities, such as ultrasound, computed tomography (ct), magnetic resonance imaging (mri) and nuclear medicine are currently used in evaluating patients with hcc. although the best option for the treatment of these cases is hepatic resection or...

پایان نامه :دانشگاه آزاد اسلامی واحد علوم پزشکی تهران - دانشکده پزشکی 1390

هدف: این مطالعه به منظور بررسی و مقایسه اثر q-switched nd yag laser و erbium laser در درمان ضایعات پیگمانته انجام شده است. روش مطالعه: 116 فرد مبتلا به ضایعات پیگمانته از نوع فرکل و خال وارد مطالعه شدند که 58 مورد با استفاده از q-switched nd yag laser و 58 مورد با لیزر erbium درمان شدند و در نهایت میزان اثربخشی (از بین رفتن کامل ضایعات) در دو گروه تعیین و مقایسه گردید. یافته ها: در این مطالعه...

Journal: :AJNR. American journal of neuroradiology 2015
S H Sundararajan P Belani S Danish I Keller

BACKGROUND AND PURPOSE Cingulotomy is a well-accepted stereotactic procedure in the treatment of debilitating pain syndromes. At our institution, we used a 980-nm diode laser to perform MR imaging-guided laser-assisted cingulotomy. We report the early MR imaging changes associated with this technique. MATERIALS AND METHODS In this retrospective analysis, MR imaging-guided laser-assisted cingu...

Journal: :Plastic and reconstructive surgery 2016
M Jenda Hop Carlijn M Stekelenburg Jakob Hiddingh Hedwig C Kuipers Esther Middelkoop Marianne K Nieuwenhuis Suzanne Polinder Margriet E van Baar

BACKGROUND In patients with burns, an early accurate diagnosis of burn depth facilitates optimal treatment. Laser Doppler imaging combined with clinical assessment leads to an accurate estimate of burn depth. However, the actual effects of the introduction of laser Doppler imaging on therapeutic decisions, clinical outcomes, and costs are unknown. METHODS A randomized controlled trial was con...

2017
Chihiro Iwashita Yoshimasa Miura Hiroyuki Osawa Takahito Takezawa Yuji Ino Masahiro Okada Alan K. Lefor Hironori Yamamoto

Barrett's adenocarcinoma may occur in multiple sites, and recurrence and metachronous lesions are the major problems with endoscopic resection. Therefore, early detection of such lesions is ideal to achieve complete resection and obtain improved survival rates with minimally invasive treatment. Laser imaging systems allow multiple modalities of endoscopic imaging by using white light laser, fle...

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