Abstract:
BACKGROUND AND OBJECTIVES:During transmyocardial laser revascularization (TMLR), multiple microembolic signals (MES) can be detected in cerebral arteries. We sought to characterize composition and clinical relevance of these MES and to evaluate strategies to reduce cerebral microembolization during TMLR. STUDY DESIGN/MATERIALS AND METHODS:TMLR was performed in pigs. Laser energy was set to 4-10 J (group A) or 80 J (group B). Oxygen concentration was varied between 21 and 100%. MES were recorded in the ophthalmic artery. Brain and spinal cord were investigated histologically after 10 days. RESULTS:More MES could be detected during high- compared to low-energy laser procedures. Ventilation with 100% oxygen reduced the number of MES. No lesions were found on histology. CONCLUSIONS:The number of MES depends on the laser energy. Laser-induces cavitation-effects lead to an additional release of nitrogen bubbles. Thus, the microembolic load can be reduced by ventilation with 100% oxygen and by decreasing the laser energy.
journal_name
Lasers Surg Medjournal_title
Lasers in surgery and medicineauthors
Gerriets T,Grossherr M,Misfeld M,Nees U,Reusche E,Stolz E,Sievers HH,Kaps M,Kraatz EGdoi
10.1002/lsm.20030subject
Has Abstractpub_date
2004-01-01 00:00:00pages
379-84issue
5eissn
0196-8092issn
1096-9101journal_volume
34pub_type
杂志文章abstract:BACKGROUND AND OBJECTIVE:Recent studies have sought to utilize diode laser "micropulsing" in order to preserve therapeutic efficacy of retinal photocoagulation while minimizing pain and subjacent tissue injury. A model for the transient thermal tissue response to continuous and micropulsed diode laser output is present...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/(sici)1096-9101(1997)20:4<409::aid-lsm6>3.
更新日期:1997-01-01 00:00:00
abstract::Since most techniques of refractive surgery currently in use or being developed have the potential for significant side effects, there is a need for investigating alternative procedures. We herein report on the use of a pulsed CO2 laser beam delivered through a pair of complementary axicons to produce a ring of stroma...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900120305
更新日期:1992-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:The metabolic flexibility is often impaired in diseases associated with obesity, and many studies are based on the hypothesis that dysfunction in peripheral tissues such as skeletal muscle, liver and adipose tissue represent the etiology of development of metabolic inflexibility. Experimental e...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章,随机对照试验
doi:10.1002/lsm.22395
更新日期:2015-10-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:The difficulties typically encountered in studying the effects of restorations on tooth reinforcement are often due to the 3-dimensional (3D) nature of deformation. Therefore, electronic 3D-Speckle-Interferometry (3D-ESPI) was used to assess the impact of different restorative materials on the...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20036
更新日期:2004-01-01 00:00:00
abstract:BACKGROUND:The treatment of acne scars with fractional CO(2) lasers is gaining increasing impact, but has so far not been compared side-by-side to untreated control skin. OBJECTIVE:In a randomized controlled study to examine efficacy and adverse effects of fractional CO(2) laser resurfacing for atrophic acne scars com...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章,随机对照试验
doi:10.1002/lsm.22048
更新日期:2012-08-01 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
pub_type: 杂志文章
doi:10.1002/lsm.1900110111
更新日期:1991-01-01 00:00:00
abstract::We present results of a series of laser spectroscopic measurements on in vitro samples of cardiovascular tissue. These include laser Raman scattering, Fourier transform infrared, plasma emission and fluorescence, and electron paramagnetic resonance spectroscopy. The results of these spectroscopic measurements are disc...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章,评审
doi:10.1002/lsm.1900080110
更新日期:1988-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Ovarian cancer remains the deadliest malignancy of the female reproductive system. The ability to identify and destroy all ovarian tumor nodules may have a termendous impact on preventing tumor recurrence, and patient survival. The objective of this study is to investigate the effectiveness of...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.22269
更新日期:2014-09-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:There are some indications that low-level laser therapy (LLLT) may delay the development of skeletal muscle fatigue during high-intensity exercise. There have also been claims that LED cluster probes may be effective for this application however there are differences between LED and laser sour...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章,随机对照试验
doi:10.1002/lsm.20810
更新日期:2009-10-01 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
pub_type: 杂志文章
doi:10.1002/lsm.10124
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Photo-aging in Chinese often presents with benign pigmentary lesions. Q-switched lasers for pigmentary lesions in Asians had reported a risk of post-inflammatory hyperpigmentation (PIH) up to 25%. Longer pulse widths in the millisecond domains were advocated with reduced risk of PIH. Recently,...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.22443
更新日期:2016-01-01 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
pub_type: 杂志文章
doi:10.1002/lsm.1046
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:The purpose of this study was to compare the effect of Low-Level Laser Therapy (LLLT) with sham and whirlpool treatment on the contracted knee joint in rat. STUDY DESIGN/MATERIALS AND METHODS:Forty-eight Wistar rats were operated on to immobilize knee joint, and 1 week after operation they wer...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/(sici)1096-9101(1998)22:2<81::aid-lsm3>3.0
更新日期:1998-01-01 00:00:00
abstract::Progress in the young field of laser recanalization of occluded arteries and applications in cardiovascular disease to which many investigators have contributed is briefly summarized. Specific problems remaining to be solved are set forth. In conclusion, the author makes a cautious prediction of success for the percut...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900060412
更新日期:1986-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:To demonstrate that high color fidelity light-emitting diode (LED) sources are preferred by dermatologists for the evaluation of patients during standard-of-care, outpatient visits when compared to low color fidelity LED sources similar to fluorescent lighting. STUDY DESIGN/MATERIALS AND METH...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.23352
更新日期:2020-11-08 00:00:00
abstract::Near-infrared radiation from a Nd:YAG laser at 1,064 nm was used interstitially or superficially to induce hyperthermia in RIF-1 tumors in C3H male mice. A single 600-microns quartz fiber with a 0.5-cm cylindrical diffusor or a weakly diverging microlens at its distal end was used to deliver laser energy to tumors in ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900120411
更新日期:1992-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:The clinical use of lasers to cut and coagulate tissue necessitates a better understanding of how the residual thermal damage affects healing. This study was designed to evaluate the effects of varying degrees of thermal damage on the healing process. STUDY DESIGN, MATERIALS AND METHODS:Partia...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/(SICI)1096-9101(1996)18:1<1::AID-LSM1>3.0.
更新日期:1996-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:In recent years, selective photothermolysis (PT) based on broadband light and assisted by skin vacuum (Photopneumatic Technology or PPx, by Aesthera) was introduced into the aesthetic market for epilation (hair removal) procedures. The present study aims to: (a) determine the overall effect of ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20743
更新日期:2009-02-01 00:00:00
abstract::We describe our experience and the problems we encountered organizing an autonomous surgical unit in which the equipment and organization enable three lasers to be used in may different applications in medicine and surgery. The three lasers--CO2, Nd:YAG, and argon--may now be used by all the departments concerned with...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900030102
更新日期:1983-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Hyperhidrosis is a condition that affects a large percentage of the population and has a significant impact on peoples' lives. This report presents a technical overview of a new noninvasive, microwave-based device for creating thermolysis of sweat glands. The fundamental principles of operatio...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.21142
更新日期:2012-01-01 00:00:00
abstract::We examined the response of tattoo pigments treated with three commercially available lasers: Q-switched ruby, Q-Switched neodynium:yttrium,aluminum,garnet (Nd:YAG), and the alexandrite. Tattoos applied to hairless guinea pigs and treated with the aforementioned lasers were evaluated clinically, histologically, and ul...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900150406
更新日期:1994-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Phototherapy plus dynamic exercise can enhance physical performance and improve health. The aim of our study was to evaluate the effect of low-level laser therapy (LLLT) associated with high intensity resistance training (HIT) on cardiac autonomic and muscle metabolic responses in rats. STUDY ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.22298
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Many studies of laser-induced thermal decomposition of dental enamel have demonstrated a reduction in the rate of acid dissolution, size of artificial caries-like lesions, and acid reactivity. Additionally, studies have correlated the loss of carbonate from dental enamel with a reduction in ac...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/(sici)1096-9101(1999)25:4<335::aid-lsm8>3.
更新日期:1999-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Chronic sun-exposure results in five main changes to exposed skin: telangiectasia, hyperpigmentation, rhytides, enlarged pores, and sagging skin. Various laser and non-laser modalities have been used to improve sun-damaged skin. The pulsed-dye laser (PDL) has an unparalleled safety record and ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20463
更新日期:2007-02-01 00:00:00
abstract::The transport of biologically active material during laser cutting with CO2 and Er lasers is demonstrated. This transport mechanism removes particles from the surface of gelatin, agar, and liver samples into the depth of the laser-formed craters. The transport phenomenon is explained by a contraction and condensation ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900080604
更新日期:1988-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Holmium laser lithotripsy is the gold standard for intracorporeal fragmentation of urinary calculi. Usually, a visible beam is superimposed on the IR treatment laser as an aiming beam to guide the surgeon. In vitro tests showed that this aiming beam (532 nm, power <1 mW) excites strong fluores...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.22611
更新日期:2017-04-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Concerning current clinical practice, laser-assisted lipoplasty is still secondary to other procedures. In order to evaluate effects of thermal interaction with fatty-tissue, a near infrared diode laser was examined under reproducible conditions. METHODS:Based on optical spectroscopy of fatty-...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20602
更新日期:2008-02-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:The present study investigated the effects of low-level laser therapy (LLLT) on oxidative stress and fibrosis in an experimental model of Achilles tendon injury induced by a single impact trauma. STUDY DESIGN/MATERIALS AND METHODS:Male Wistar rats were randomly divided into four groups (n = 8...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20225
更新日期:2005-10-01 00:00:00
abstract::This paper describes the use of a pulsed argon laser to perform iridotomies in 87 patients. Diagnosis include: primary angle closure glaucoma, narrow angle in the fellow eye of patients with primary angle glaucoma, pupillary block, and after incomplete surgical iridectomies. Laser iridotomy was achieved in 79% of pati...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900010205
更新日期:1980-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:One of the methods to detect and localize tumors in tissue is to use fluorophore conjugated specific antibodies as tumor surface markers. The goals of this study are to understand and quantify the pharmacokinetics of fluorophore conjugated antibodies in the vicinity of a tumor. This study conc...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20200
更新日期:2005-08-01 00:00:00