WordNet
- emit as rays; "That tower rays a laser beam for miles across the sky"
- (mathematics) a straight line extending from a point
- a branch of an umbel or an umbelliform inflorescence
- any of the stiff bony spines in the fin of a fish
- cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins
PrepTutorEJDIC
- 『光線』;熱線;放射線 / 《a ~》(希望などの)一筋(ひとすじ),ごく少量《+『of』+『名』》 / 放射状に突き出たもの;(ヒトデなどの)腕
- (魚の)エイ
- roentgen / recto
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/06/09 16:04:16」(JST)
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Grenz rays are part of the electromagnetic spectrum comprising low energy (ultrasoft) X-rays. These were first investigated by Gustav Bucky in 1923 using a cathode vacuum tube with a Lithium borate glass window which he labeled Grenz rays as he believed that the biological effects resembled UV light and traditional X-rays and hence was on the border between the two (Grenz = border in German). These rays are also known as Bucky rays.[1]
Grenz rays are produced by specially calibrated X-ray machines generally operating in the 10 to 30 kV range to produce X-rays with HVL less than 0.035 mm Al.[2] (HVL is half value layer and refers to a thickness of a given material that will cut the X-ray flux by 50%). Grenz rays are absorbed by air and therefore treatments must be given at fixed distances which the machine has been calibrated for. Grenz rays have a half value depth of 0.5mm and are essentially absorbed within the first 2mm of skin.[3] The exact mechanism of action is unknown but it does have effects on the Langerhans cells in the epidermis.[4][5]
Contents
- 1 Uses
- 2 See also
- 3 References
- 4 External links
Uses
Grenz rays are indicated for treatment of eczema, psoriasis, palmoplantar pustulosis, neurodermatitis and pruritus ani et vulvae. It has been reported to be helpful for lichen planus, Grover's disease, Darier's disease, Hailey-Hailey disease[6] & histiocytosis X.[2] Grenz ray has been used for treatment of actinic keratoses & Bowen's disease.[1]
See also
References
- ^ a b Lewis H: Grenz ray therapy: Regimens & Results.Chapter 15 in Physical Modalities in Dermatologic Therapy. Goldschmidt H (ed.) 1978 Springer-Verlag
- ^ a b Hollander MB : Grenz rays. Journal of Investigative Dermatology 21,15–26 July 1953.
- ^ Olivo MP :Grenz ray treatment of Benign Skin Diseases Chapter 5 Radiation treatment and Radiation Reactions in Dermatology Panizzon R & Cooper J (ed.) 2004 Springer-Verlag Berlin.
- ^ Lindelof B,Linden S,Ros A-M Effect of Grenz rays on Langerhans cells in human epidermis.Acta Dermatol.Venereol (Stockh)64:436-8 1984
- ^ Beitner H,Nakatani T & Lindelof B An ultrastructural study of human epidermal Langerhans cells irradiated with Grenz rays and ultraviolet A Photodermatol Photoimmunol Photomed 1990 : 7 : 266-8
- ^ Burge SM, Graham-Brown RAC: "Hailey-Hailey Disease" in Treatment of Skin Disease: Comprehensive Therapeutic Strategies, 3rd Ed., edited by MG. Lebwohl, WR. Heymann, J. Berth-Jones, I. Coulson (Saunders Elsevier, 2010), pp. 287-288.
External links
- Grenz Ray Therapy for Skin Disorders
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English Journal
- A need to reconsider guidelines on management of primary spontaneous pneumothorax?
- Yoon J1, Sivakumar P2, O'Kane K3, Ahmed L1.
- International journal of emergency medicine.Int J Emerg Med.2017 Dec;10(1):9. doi: 10.1186/s12245-017-0135-x. Epub 2017 Feb 21.
- PMID 28224348
- Anterior segment optical coherence tomography and retained vegetal intraocular foreign body masquerading as chronic anterior uveitis.
- Mahmoud A1, Messaoud R1, Abid F1, Ksiaa I2, Bouzayene M1, Khairallah M3.
- Journal of ophthalmic inflammation and infection.J Ophthalmic Inflamm Infect.2017 Dec;7(1):13. doi: 10.1186/s12348-017-0130-7. Epub 2017 May 23.
- PMID 28536985
Japanese Journal
- 松本 正
- 日本放射線技術學會雜誌 18(4), 258-263, 1963-03-30
- … The spectral distribution of Grenz-ray which emanated from the Grenz-ray tube with mica window was calculated on the basis of Kulenkampff's empirical formula. …
- NAID 110003452684
- 境界線(Grenz-Ray)による2,3の皮膚疾患の治療について
Related Links
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