Practical models for light distribution in laser-irradiated tissue.

abstract：:Diagnostic endoscopy has generally been done under intravenous sedation. Diazepam and meperidine are the two most frequent drugs used. Even though these drugs produce sedation, analgesia, and amnesia, they do not provide a quiet field. Therapeutic laser endoscopy requires a quiet field. We conclude that an anesthesiol...

journal_title：Lasers in surgery and medicine

authors： Lichtiger M,Russin DJ

更新日期：1987-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVE:Light dosimetry for endobronchial photodynamic therapy is not very advanced to date. This study investigates the dependency of the fluence rate distribution in the bronchial wall on several parameters. STUDY DESIGN/MATERIALS AND METHODS:A Monte Carlo model is employed for the illumination of a...

journal_title：Lasers in surgery and medicine

authors： Murrer LH,Marijnissen HP,Star WM

更新日期：1998-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVE:In previous investigations, small variations in the energy densities of low level light therapy (LLLT) were found to produce significant differences in the proliferation of resting T-lymphocytes in vitro. Pulsing these cells with mitogen in addition to laser therapy produced inhibitory effects ...

journal_title：Lasers in surgery and medicine

authors： Agaiby AD,Ghali LR,Wilson R,Dyson M

更新日期：2000-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVE:The purpose of this investigation was to evaluate: 1. thermal events during laser irradiation @2.1 microns of the pulp; 2. whether these effects are adequately modeled using an empty pulp chamber/root canal. STUDY DESIGN/MATERIALS AND METHODS:In extracted human teeth, pulpal access was prepare...

journal_title：Lasers in surgery and medicine

authors： Chang JC,Wilder-Smith P

更新日期：1998-01-01 00:00:00

abstract：:Photodynamic therapy (PDT) is a promising approach to the treatment of cancer. Preferential retention of the photosensitizer by malignant tissue has been considered a hallmark of this treatment modality. However, photosensitivity can be observed in normal, non-neoplastic tissues, and the present study investigated the...

journal_title：Lasers in surgery and medicine

authors： Chazen MD,Baggs RB,Gibson SL,Albert MS,Hilf R

更新日期：1991-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVES:Complete neurosurgical resection of intracranial meningiomas is essential to avoid residual tumor tissue and thus minimize the risk of tumor recurrence. However, local recurrence of meningiomas is not uncommon mainly due to insufficient intraoperative detection of residual tumor tissue within ...

journal_title：Lasers in surgery and medicine

authors： Wadiura LI,Millesi M,Makolli J,Wais J,Kiesel B,Mischkulnig M,Mercea PA,Roetzer T,Knosp E,Rössler K,Widhalm G

更新日期：2020-07-01 00:00:00

abstract：:The feasibility of using a pulsed dye laser in angioplasty for detection and disintegration of calcified plaques was studied in vitro. A flashlamp-pumped dye laser (495 nm, 2 microseconds) was used as the exciting source for laser-induced-fluorescence (LIF) signals. Spectral data in the 520 nm to 800 nm region of norm...

journal_title：Lasers in surgery and medicine

authors： Scheu M,Kagel H,Zwaan M,Lebeau A,Engelhardt R

更新日期：1991-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVE:Dynamics of cryogen spray deposition, water condensation and frost formation is studied in relationship to cooling rate and efficiency of cryogen spray cooling (CSC) in combination with laser dermatologic surgery. STUDY DESIGN/MATERIALS AND METHODS:A high-speed video camera was used to image t...

journal_title：Lasers in surgery and medicine

authors： Majaron B,Kimel S,Verkruysse W,Aguilar G,Pope K,Svaasand LO,Lavernia EJ,Nelson JS

更新日期：2001-01-01 00:00:00

abstract：OBJECTIVES:While controlled thermal changes in subcutaneous tissue have been used to trigger apoptosis of fat cells and have been proven clinically efficacious, another mechanism of electromagnetic stress suggests that fat apoptosis could be achieved by a non-thermal manner as well. This animal model study investigates...

journal_title：Lasers in surgery and medicine

authors： Weiss RA,Bernardy J

更新日期：2019-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVE:The nonablative application of holmium:yttrium-aluminum-garnet (Ho:YAG) laser energy to the joint capsule of patients with glenohumeral instability has been found to shrink capsular tissue and to help stabilize the joint. The purpose of this study was to evaluate the effect of nonablative laser...

journal_title：Lasers in surgery and medicine

authors： Hayashi K,Nieckarz JA,Thabit G 3rd,Bogdanske JJ,Cooley AJ,Markel MD

更新日期：1997-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVES:The risks of currently available invasive procedures in body contouring motivate a need for safer, non-invasive technologies for improving the appearance of body silhouette. A new device has been developed that uses focused therapeutic ultrasound to reduce adipose tissue non-invasively. The ai...

journal_title：Lasers in surgery and medicine

authors： Moreno-Moraga J,Valero-Altés T,Riquelme AM,Isarria-Marcosy MI,de la Torre JR

更新日期：2007-04-01 00:00:00

abstract：OBJECTIVES:This review has the following objectives: Firstly, it provides an explanation of the evolution of laser/intense pulsed light (IPL) hair reduction modalities from high fluence professional devices to low fluence home-use appliances. Secondly, it summarises published literature reviews on home-use devices (HUD...

journal_title：Lasers in surgery and medicine

authors： Town G,Botchkareva NV,Uzunbajakava NE,Nuijs T,van Vlimmeren M,Ash C,Dierickx C

更新日期：2019-08-01 00:00:00

abstract：:This study characterizes the special properties of hematoporphyrin derivative (HpD) (Photofrin I) and Photofrin II with respect to the absorption and fluorescence spectra of the subfractions of the compounds in both solution and cells. In addition, data are presented demonstrating variation in the spectral amplitudes ...

journal_title：Lasers in surgery and medicine

authors： Sun CH,Duzman E,Mellott J,Liaw LH,Berns MW

更新日期：1987-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVES:We evaluated the potential of combining laser excision with laser interstitial hyperthermia in order to improve the quality of life of patients with 3rd or 4th stage malignant head and neck tumours. STUDY DESIGN/MATERIALS AND METHODS:To evaluate the quality of life, we used the 4th version of...

journal_title：Lasers in surgery and medicine

authors： Smucler R,Mazánek J

更新日期：2004-01-01 00:00:00

abstract：:It has been postulated that low energy (soft) lasers can enhance wound healing. Considering the importance of cell locomotion in the wound healing process, we have studied the effects of a helium/neon laser upon the locomotory behaviour of a population of fibroblasts migrating within a three-dimensional hydrated colla...

journal_title：Lasers in surgery and medicine

authors： Noble PB,Shields ED,Blecher PD,Bentley KC

更新日期：1992-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVE:Varied physical and chemical characteristic of root canal sealers and different irrigant agitation systems can influence the depth of penetration. The aim of this in vitro study was to use a laser scanning confocal microscope in order to assess the dentinal tubules penetration of various sealer...

journal_title：Lasers in surgery and medicine

authors： Akcay M,Arslan H,Durmus N,Mese M,Capar ID

更新日期：2016-01-01 00:00:00

abstract：:Heat-induced oxygen tension changes in RIF-1 tumors in C3H male mice were analyzed in an attempt to correlate these changes with tumor response to Nd:YAG laser heating. A low power, microprocessor-controlled Nd:YAG laser was used to superficially heat 250-300 mm3 tumors to base temperatures of 44, 45, 46, or 48 degree...

journal_title：Lasers in surgery and medicine

authors： Fahy AK,Waldow SM

更新日期：1993-01-01 00:00:00

abstract：:The pulsed dye laser (wavelength 504 nm, pulse duration 1 microsecond) is widely used for fragmenting urinary and biliary calculi. In this study, the performance of this laser was compared with pulsed dye lasers producing pulse durations of 8 and 20 microseconds. Fragmentation thresholds and fragmentation rates were m...

journal_title：Lasers in surgery and medicine

authors： Bhatta KM,Nishioka NS

更新日期：1989-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVE:The Holmium: YAG (Ho: YAG) laser has been used for the ablation of prolapsed discs but alternative techniques are available, and this application remains controversial. It also has potential for the decompression of nerve roots within narrowed foraminae with the technique of endoscopic laser fo...

journal_title：Lasers in surgery and medicine

authors： Hafez MI,Zhou S,Coombs RR,McCarthy ID

更新日期：2001-01-01 00:00:00

abstract：UNLABELLED:BACKGROUND AND OBJECTIVE To examine the biophysical effects of photothermal heating on herniated intervertebral discs during laser decompression surgery. STUDY DESIGN/MATERIALS AND METHODS:Ex vivo bovine nucleus pulposus specimens were irradiated with a Nd: YAG laser (lambda = 1.32 microm, 100 seconds expos...

journal_title：Lasers in surgery and medicine

authors： Choi JY,Tanenbaum BS,Milner TE,Dao XV,Nelson JS,Sobol EN,Wong BJ

更新日期：2001-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVE:To evaluate safety and efficacy of treatment with the picosecond Nd:YAG 532 nm for lentigines in Asian skin. STUDY DESIGN/MATERIALS AND METHODS:This was a prospective, open-label cohort study, using a novel picosecond 532-nm laser for the treatment of facial lentigines. Subjects received up to...

journal_title：Lasers in surgery and medicine

authors： Chan MWM,Shek SY,Yeung CK,Chan HH

更新日期：2019-11-01 00:00:00

abstract：:A synthetic contact sapphire endoprobe attached to the quartz fiber of a neodymium:yttrium aluminum garnet (Nd:YAG) laser had been used in the transurethral treatment of bladder tumors. A total of 68 operations have been carried out in 48 patients. The contact probe was placed directly into the tumor under direct visi...

journal_title：Lasers in surgery and medicine

authors： Washida H,Watanabe H,Sakagami H,Sasaki S,Daikuzono N

更新日期：1987-01-01 00:00:00

abstract：:Patients with malignant obstructive airway lesions often present with total or segmental atelectasis of lung. In spite of prompt initiation of palliative external radiation alone, some patients were unable to complete the planned course of radiation therapy. Since May 1983, 17 patients with malignant obstructive endob...

journal_title：Lasers in surgery and medicine

authors： Jain PR,Dedhia HV,Lapp NL,Thompson AB,Frich JC Jr

更新日期：1985-01-01 00:00:00

abstract：:The argon fluoride excimer laser is investigated as a cutting-ablating tool for bone surgery. Quantitative measurements are presented for various fluences of laser energy and number of pulses. Histological data are presented that demonstrate the minimal damage to the surrounding material from the laser interaction. Co...

journal_title：Lasers in surgery and medicine

authors： Lustmann J,Ulmansky M,Fuxbrunner A,Lewis A

更新日期：1991-01-01 00:00:00

abstract：OBJECTIVE:The objective of this study was to evaluate the effectiveness of the pulsed dye laser (585 nm, 450 ms) in the treatment of sun induced wrinkles. DESIGN:Patients had one pulsed dye laser (585 nm) treatment. The treated areas were assessed by the following methods: grading of skin wrinkles at 6 weeks, 12 weeks...

journal_title：Lasers in surgery and medicine

authors： Zelickson BD,Kilmer SL,Bernstein E,Chotzen VA,Dock J,Mehregan D,Coles C

更新日期：1999-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVE:Endoscopic third ventriculostomy is used to treat hydrocephalus. Different laser wavelengths have been proposed for laser-assisted endoscopic third ventriculostomies over the last decades. The aim of this study was to evaluate Thulium laser endoscopic third ventriculostomy heat penetration in t...

journal_title：Lasers in surgery and medicine

authors： de Boorder T,Brouwers HB,Noordmans HJ,Woerdeman PA,Han KS,Verdaasdonk RM

更新日期：2017-12-07 00:00:00

abstract：BACKGROUND AND OBJECTIVES:Laser has been reported as a heat source for melting and re-crystallization. Occurring at about 1100 degrees C, the melting of surface dental enamel along with re-crystallization might have an assistant role in the therapy of hypersensitive tooth, apical sealing of endodontic surgery in dentis...

journal_title：Lasers in surgery and medicine

authors： Wu CC,Roan RT,Chen JH

更新日期：2002-01-01 00:00:00

abstract：BACKGROUND AND OBJECTIVE:To evaluate the potentials of a 1310-nm optical coherence tomography (OCT) system to penetrate the highly backscattering sclera in enucleated human eyes and provide visualization of intraocular structures by transscleral imaging. STUDY DESIGN/MATERIALS AND METHODS:OCT-images were generated by ...

journal_title：Lasers in surgery and medicine

authors： Hoerauf H,Winkler J,Scholz C,Wirbelauer C,Gordes RS,Koch P,Engelhardt R,Laqua H,Birngruber R

更新日期：2002-01-01 00:00:00

abstract：:To date, there are two fairly well-established alternatives for laser-induced shock-wave lithotripsy in clinical practice. The Q-switched Nd:YAG laser is distinguished by the high-stone selectivity of its coupler systems. The necessity of a coupler system and its fairly small conversion rate of light energy into mecha...

journal_title：Lasers in surgery and medicine

authors： Thomas S,Pensel J,Engelhardt R,Meyer W,Hofstetter AG

更新日期：1988-01-01 00:00:00

abstract：OBJECTIVE:The aim was to evaluate the influence of Er,Cr:YSGG laser irradiation associated with different final irrigation protocols on the bond strength of epoxy resin-based root canal sealer to root dentin, on the dentin/filling material interface and in the temperature variation during irradiation. METHODOLOGY:Nine...

journal_title：Lasers in surgery and medicine

authors： Franceschini KA,Silva-Sousa YT,Lopes FC,Pereira RD,Palma-Dibb RG,de Sousa-Neto MD

更新日期：2016-12-01 00:00:00