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Volume 24, Issue 8
Displaying 1-12 of 12 articles from this issue
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Yoshihiro HAYATA1996 Volume 24 Issue 8 Pages 839-840
Published: August 25, 1996
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSDownload PDF (186K) -
Osamu KEMMOTSU1996 Volume 24 Issue 8 Pages 841-849
Published: August 25, 1996
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSPain attenuation by laser therapy was evaluated in 441 patients with various kinds of chronic pain syndromes at our clinic with mainly a 60mW CW GaAlAs system operating at 830 nm. There has been found no consistently reliable therapy for neuropathic pain including postherpetic neuralgia. Our clinical data showed 76% patients with postherpetic neuralgia achieved either excellent or good results by laser therapy. Laser therapy is also useful to shorten the pathogenesis of herpes zoster and lower the incidence of postherpetic neuralgia. Laser therapy is a noninvasive, painless and complication-free modality of pain attenuation, and it is safely used even in elderly patients who has cardiovascular and endocrine disorders. Laser therapy has been surely contributing to the improvement of the quality of life and activity of daily life of patients who have painful and debilitating conditions by chronic pain syndromes.View full abstractDownload PDF (1462K) -
Masayoshi OKADA1996 Volume 24 Issue 8 Pages 850-859
Published: August 25, 1996
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSSince 1980's we have investigated laser works concerning to 3 fields of cardiovascular surgery. These works are as follows. That is, (1) Transmyocardial revascularization, (2) Laser vascular anastomosis, (3) Laser angioplasty. (1) Transmyocardial revascularization (TMR): This method is applied only for the patient for whom coronary artery bypass grafting (CABG) can not be carried out, because of small and diffuse stenoses of the coronary arteries. By this procedure arterial blood from the left ventricular cavity is supplied into the ischemic myocardium through the newly created myocardial channel by CO2 laser (output more than 80W, irradiation time 0.2 sec ). The new channel in the myocardium was opened for 3 years. And then, clinical application was done in November 12, 1985. This is a first clinical successful case in Japan. (2) Laser vascular anastomosis: Low power CO2 laser was used for this study. Optimal conditions were 20-40mW in output and 6-12 sec/mm in irradiation. First clinical application in the world was successfully performed in January 21, 1985. (3) Laser angioplasty: Based on excellent experimental results clinical application by Argon laser was done for 98 patients with intermittent claudication and stenosis more than 75% angiographycally. Cumulative patency rate in the follow up to 96 months was 87% in the stenotic lesions and 71% in the occlusive lesions.View full abstractDownload PDF (3622K) -
Tetsuya OKUNAKA, Harubumi KATO1996 Volume 24 Issue 8 Pages 860-865
Published: August 25, 1996
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSPhotodynamic therapy (PDT) is an experimental cancer treatment modality that selectively destroys cancer cells by an interaction between absorbed light and a retained photosensitizer. A wide variety of malignancies have been treated by this method and according to the worldwide literature, over 3000 patients have been treated thus far with photodynamic therapy. The applications of PDT via endoscopy have been investigated in our laboratory since 1978, and the therapeutic effectiveness of this technique was demonstrated in our canine tumor model. PDT has been applied clinically since 1980 at Tokyo Medical College in a total of 390 patients including 240 patients with lung cancer, and 24 with esophageal cancer. Results were extremelly good especially for endoscopically early stage lung cancer. Complete remission, which means no evidence of tumor endoscopically, cytologically and histologically, was obtained in 79 lesions out of 95 lesions (83.2 %) of early stage lung cancerView full abstractDownload PDF (1222K) -
Jun NOJI1996 Volume 24 Issue 8 Pages 866-870
Published: August 25, 1996
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSIn recent years the progress of laser technology has brought a great benefit to ophthalmological treatment and diagnosis. In some cases laser treatment has taken place of ophthalmic surgery. In this issue I would like to introduce how laser is applied to ophthalmological treatment and diagnosis.View full abstractDownload PDF (1088K) -
Takeshi SHIMBASHI1996 Volume 24 Issue 8 Pages 871-877
Published: August 25, 1996
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSIt has been remarkably progressed in cutaneous laser surgery. Anderson elucidated the theory of selected photothermolysis and the most selective target destruction is achieved. Now it is possible to get good clinical result in treating of dermal melanocytosis which is not easy to be treated well.View full abstractDownload PDF (1823K) -
Tetsuzo INOUYE, Tetsuya TANABE, Manabu NAKANOBOU, Tsuyoshi MATSUNAGA1996 Volume 24 Issue 8 Pages 878-885
Published: August 25, 1996
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSLaser surgery in otolaryngology was reviewed and the results of laser treatment were presented based on our experience. Laser surgery was performed for 204 cases of allergic rhinitis at our-out-patient clinic. The therapy was effective in 91% for nasal obstruction and 87% for nasal symptoms overall. Sixty-eight cases of glottic carcinoma were treated with laser surgery. The 5-year survival rate was 100% for T1 and 80% for T2 cases. Glottis T1 can be treated by laser surgery alone. Laser surgery followed by external radiotherapy for glottis T2 improves the voice conservation rate. Seventeen patients with subglottic or tracheal stenosis were treated with laser surgery. Sixteen patients required emergency endolaryngeal laser surgery and satisfactory results were achieved in 12. Six of seven patients with stenosis due to malignant tumor could be treated satisfactorily, although long-term follow-up confirmed recurrence of tumor.View full abstractDownload PDF (919K) -
Haruka KUSAKARI, Hitoshi TANI1996 Volume 24 Issue 8 Pages 886-892
Published: August 25, 1996
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSThis paper reviews laser application for dentistry. Recently, following the development of the Er:YAG and Pulsed Nd:YAG laser, their indication in the dental practice widened. This review describes the indications and possibilities of use in dentistry for each type of laser, together with the hintherto dental treatment.View full abstractDownload PDF (855K) -
Junichi HAYASHI, Katsuo AIZAWA1996 Volume 24 Issue 8 Pages 893-897
Published: August 25, 1996
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSPhotodynamic therapy is a new approach to treat the cardio-vascular diseases. Several photosensitizers were selectively accumulated in atherosclerotic plaques. A tunable diode laser was developed and was useful to activate the photosensitizer. Atheroma could be destroyed by photodynamic therapy. Intimal hyperplasia of the artery could also be suppressed by the combination of laser irradiation and a photosensitizer. We reviewed a new trend of photodynamic therapy in the field of atherosclerosis and vascular intimal hyperplasia.View full abstractDownload PDF (707K) -
Huitian WANG, Nobukazu YOSHIKAWA, Shin YOSHIKADO, Tadashi ARUGA1996 Volume 24 Issue 8 Pages 898-905
Published: August 25, 1996
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSA new configuration of the mutually pumped phase conjugation (MPPC) was demonstrated experimentally in Ce-doped BaTiO3 crystal by using two nanosecond pulsed beams. This new MPPC was referred to as a rainbow shaped MPPC. We investigated the formation process of MPPC reflections. The variation of the phase conjugate reflectivity with the incident angle and the intensity-dependent build-up time of phase conjugation were measured. The maximum reflectivity was found to be about 24% for two incident beams of an equal intensity.View full abstractDownload PDF (1383K) -
Akio MIYAMOTO, Hidetsugu YOSHIDA, Yusuke MORI, Takatomo SASAKI, Sadao ...1996 Volume 24 Issue 8 Pages 906-909
Published: August 25, 1996
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSBulk laser damage thresholds of KTiOPO4 (KTP) crystals were measured. Strong backward stimulated Raman scattering (SRS) was observed with a z-polarized incident beam that results in anomalous high damage threshold as high as 400 GW/cm2. Our investigation indicate that KTP crystal can be used in practical stimulated Raman converter devices.View full abstractDownload PDF (699K) -
Yoshiaki KATO, Masayuki KAKEHATA, Haruhiko ITO, Yasushi FUJIMOTO, Yusu ...1996 Volume 24 Issue 8 Pages 910-932
Published: August 25, 1996
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSDownload PDF (3264K)
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