摘要:

AbstractModeling laser treatment of portwine stains (PWS) is shown to be possible (a) when information is available about the anatomy and physiology of the PWS vasculature, (b) when coagulation of a vessel can be defined in terms of physics, (c) when we know what size vessels at what dermal depths require coagulation, (d) when the optical properties of the skin constituents are known, and (e) when the light distribution following laser irradiation can be deduced from those optical properties. This report focuses on physical criteria for vessel coagulation, and relates the consequences of two criteria with recent experimental and clinical results.

ISSN:1044-5471    

DOI:10.1089/clm.1992.10.1

年代:1992

数据来源: MAL

摘要:

AbstractThe KTP/YAG laser (Laserscope) was clinically investigated in treatment of 54 patients, 28 of whom had cervical intraepithelial neoplasia (CIN), 11 who had cervical polyp, 4 with cervical myoma, 9 with condyloma acuminata, and 2 with vulvar tumors. AH patients were treated on an outpatient basis with local anesthesia. The procedure was performed in contact and noncontact irradiation modes with the tissue by using a bare fiber held in a handpiece with a power setting of 10–15 watts. Laser excisional conization was carried out for the treatment of CIN, laser excision was used for the treatment of condyloma of the cervix, cervical polyp, cervical myoma, and benign tumor of the vulva, and laser vaporization was used for condyloma of the vulva. The first cure rates were all satisfactory for the follow-up periods of 4–10 months. Complications during and post operation were minimal. The KTP laser provided good vaporizing ability compared with CO2and YAG lasers. When massive bleeding occurred which could not be stopped with the KTP laser, the YAG laser was u

ISSN:1044-5471    

DOI:10.1089/clm.1992.10.7

年代:1992

数据来源: MAL

ISSN:1044-5471    

DOI:10.1089/clm.1992.10.13

年代:1992

数据来源: MAL

摘要:

AbstractAs a cutting instrument, the CO2laser is the most suitable type of laser currently available for medical applications. It has proved particularly advantageous in surgery of the upper aerodigestive tract, as its energyabsorbing properties, which do not depend on dyes, allow its effect in tissue to be controlled accurately. Additionally, the slight degree of postoperative edema is invaluable, especially in the region of the upper respiratory passages.

ISSN:1044-5471    

DOI:10.1089/clm.1992.10.19

年代:1992

数据来源: MAL

摘要:

AbstractOver a period of 18 months, from January 1988 to June 1989, a large number of patients were treated for subungual hematomas and posttraumatic nail deformities in a Multi-Specialty Military Clinic, using a CO2laser. A significant decrease in peri- and postprocedure pain was observed, as well as a faster healing time, suggesting this technique as an attractive option in the treatment of nail trauma cases.

ISSN:1044-5471    

DOI:10.1089/clm.1992.10.23

年代:1992

数据来源: MAL

摘要:

AbstractTwo cases of extensive bowenoid papulosis, a unique human papilloma virus infection of genitalia which initially were diagnosed as Bowen disease are reported. Both were treated with CO2laser vaporization (15 W, continuous wave, power density 1909 watts/cm2) with 1 cm peripheral zone vaporization (15 W, continuous wave, power density 477 W/cm2). The laser wounds healed nicely with no visible scarring. There was no evidence of recurrence after 12 and 18 months follow up, respectively.

ISSN:1044-5471    

DOI:10.1089/clm.1992.10.27

年代:1992

数据来源: MAL

摘要:

AbstractFrom 1987 to 1990, there were 122 soldiers were treated with the CO2laser (Sharplan 1020) in the Laser Center of the Israel Defense Forces. A variety of benign oral lesions, vascular tumors, and other oral lesions were excised or vaporized. Twenty-four soldiers with impacted wisdom teeth and wide pericoronitis underwent operculectomy using the CO2laser. The CO2laser has the ability to perform accurate hemostasis surgery, with minimal postoperative pain and edema, and rapid healing, resulting in fast recovery without significant discomfort. These advantages are particularly important in the military since soldiers can return to their duties immediately after surgery.

ISSN:1044-5471    

DOI:10.1089/clm.1992.10.31

年代:1992

数据来源: MAL

摘要:

AbstractDeep-seated brain tumor is difficult to treat surgically. Hyperthermia using various energy sources has been tried, but has failed to gain wide use because of equipment problems and poor temperature control. It is possible now to use Nd:YAG laser with a stable low-energy supply as an energy source for laser hyperthermia (laserthermia). Animal study and clinical study were done using SLT CL50, Computer-control Laserthermia System to treat deep-seated brain tumors. Experimental study revealed that laserthermia produced minimal edema, temperature control was satisfactory, and blood-brain barrier opened up for 6 days following laserthermia. Five patients with brain tumors were treated with laserthermia. Follow-up CT scan revealed disappearance of tumor in 4 patients and decrease in volume in 1 patient. Long-term neurological follow up revealed no deterioration. Laserthermia using Nd:YAG laser is safe and easy to use and it is beneficial to treat deep-seated brain tumors.

ISSN:1044-5471    

DOI:10.1089/clm.1992.10.37

年代:1992

数据来源: MAL

摘要:

AbstractRemoval of melanin pigmentation of the gingiva with CO2laser irradiation was investigated. The melaninpigmented gingiva of 5 dogs were classified according to the degree of gingival pigmentation (slight, moderate, severe) and its extent (local, extensive). CO2laser was irradiated on the surface of the pigmented gingiva under the following conditions; defocused beams of spot size 4 mm, irradiation time 0.2 (S), output 6 ∼ 8 (W). That is, the irradiation energy density was 9.6 ∼ 12.8 J/cm2. The irradiated gingiva was examined macroscopically and histopathologically. The histopathological changes were investigated by hematoxylin-eosin staining and Masson staining for the differential diagnosis of melanin pigmentation cells. These examinations were done one week and three weeks after the laser irradiation. Immediately after irradiation, the gingiva surface showed white color and bulla-like appearance. One week after irradiation, the pigmentation of the lased gingiva disappeared in all cases macroscopically. Histologically, the pigmented-laden cells could not be found and no inflammatory cell infiltration was observed. Three weeks after irradiation, no reappearance of pigmentation was observed in either macroscopical or microscopical investigations excluding severe/extensive cases. These findings suggested that it is possible to remove gingival melanin pigmentation by CO2laser irradiat

ISSN:1044-5471    

DOI:10.1089/clm.1992.10.41

年代:1992

数据来源: MAL

摘要:

AbstractIn tonsillectomy, unexpected bleeding can be one of the most troublesome surgical procedures to perform. To resolve some inherent problems, we have developed a new elevator with contact Nd:YAG laser probe for blunt dissection around the tonsillar capsule. Of 63 cases of laser tonsillectomies performed over 5 years, 51 cases were performed using conventional contact Nd:YAG laser probe and a chisel type dissector. Tonsillectomy in the remaining 12 cases was undertaken by the newly developed elevator with contact Nd.YAG laser probe. We compared clinical evaluation between laser and conventional procedures. Additionally, the advantage of laser tonsillectomy is discussed.

ISSN:1044-5471    

DOI:10.1089/clm.1992.10.47

年代:1992

数据来源: MAL