Effects of ionizing radiation on auditory and visual thresholds

Effects of ionizing radiation on auditory and visual thresholds Download PDF EPUB FB2

These higher radiation doses have had less of an effect on visual intensity thresholds, producing a 5- lO dB deficit in visual thresholds.

No physical damage to the cornea iris lens or retina Author: Robert Hienz. Get this from a library. Effects of ionizing radiation on auditory and visual thresholds.

[Robert D Hienz; United States. Defense Nuclear Agency.]. Effects of Ionizing Radiation on Auditory and Visual Thresholds C -DNA C PE - H 6.

AUTHOR(S) PR -RM TA -RF Robert D. Hienz WU -DH 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION REPORT NUMBER Johns Hopkins University School of Medicine Rutland Avenue Baltimore, MD Author: Robert D Hienz.

The human eye is exposed to a wide range of radiant energy aside from the visual spectrum, including ultraviolet, infrared, microwave, and ionizing radiation. Of these, ionizing radiation can cause some of the most significant and long-lasting damage to the lens, conjunctiva, and cornea.

Ionizing sources include natural levels from cosmic (30 Cited by: 3. ionizing radiation present in our environment includes ultraviolet, visible light, infrared,microwaves, and radio-frequency waves as indicated by Table I.

Ultraviolet radiation is important for a number of biological processes and has also been shown to have deleterious effects on certain biological systems. One effect of ultraviolet radiation that. Effects of ionizing radiation on the haematopoietic and immune systems [U8] Radiation-induced cancer: impairment of immunological surveillance [U7] Haematological and immunological effects of ionizing radiation [U6] Annex B, part III: Effects of ionizing radiation on the immune system in the context of adaptive response [U4].

izing radiation have been extensively studied and docu-mented. Epidemiological data on the carcinogenic effects of exposure to ionizing radiation Effects of ionizing radiation on auditory and visual thresholds book the subject of con-tinuing reviews by UNSCEAR (see annex A to this report, “Epidemiological studies of radiation and cancer”, and, for example, references [U2, U4, U6]).

The effects of expo-File Size: KB. IONIZING RADIATION 82 3. SUMMARY OF HEALTH EFFECTS OF IONIZING RADIATION appeared to have redistributed from the lungs to the bones and, given its long physical half-time (t1/2) of years, would have irradiated the surrounding tissues for a lengthy period of time to produce a cancerous end Size: KB.

Environmental Medicine /90 $ + Health Effects of Nonionizing Radiation Gearge M. Wilkening, MS,* and earl H. Suttan, MDt I. BIOLOGIC EFFECTS OF MICROWAVE AND RADIOFREQUENCY ENERGY Microwave and radiofrequency energy are examples of non ionizing radiation, which is completely different from ionizing radiation, including nuclear Cited by: 8.

Overview of Effects and Protection of Non-Ionizing Radiation Maila Hietanen, Professor non-ionizing radiation - ICNIRP 7/99.

ICNIRP Statements on: —radiation risks from visual display units —fluorescent lighting and malignant melanoma —UV sunbeds —light emitting diodesFile Size: 2MB. ABSTRACT Objective: To test the hypothesis that fractionated radiation therapy of less 50 Gy is associated with a dose-related change in the Tl of normal brain tissue, and that these changes are detectable by quantitative MRI.

What are some obvious effects of ionising radiation exposure. Extreme doses of radiation to the whole body (around 10 sievert and above), received in a short period, cause so much damage to internal organs and tissues of the body that vital systems cease to function and death may result within days or weeks.

Very high doses (between about 1 sievert and 10 sievert). This small book is more informative than any other condensed Russian book which the reviewer has seen on this subject. It is divided into two parts: (a) effects of ionizing radiation on the analyzers, ie, viual, auditory, cutaneous, taste, olfactory, vestibular, interoceptive, and pain, and (b) effects of ionizing radiation on the peripheral and central Cited by: 1.

The effects of ionizing radiation on the ears of patients were studied in the course of treatment of malignant head and neck tumors by teleradiation using Co Early changes consisted of radiation otitis media and a transient vasculitis of the vessels of the inner ear, resulting in hearing loss, tinnitus, and temporary recruitment.

Radiation doses have to reach a certain level to produce acute injury but not to cause cancer or genetic damage. No biological effects in individuals have ever been documented as being due to levels of ionizing radiation employed for medical diagnosis.

Absorbed doses from nuclear medicine procedures are very low. Ionizing radiation causes a chemical change and thus causes more damage than non-ionizing radiation.

Still, observable effects can be tracked from non-ionizing radiation. Visible light, infrared light, microwaves, and radio waves are some examples of non-ionizing radiation. The light from the sun that reaches Earth is largely non-ionizing.

Exposure to ionizing radiation (IR) could affect the human brain and eyes leading to both cognitive and visual impairments. The aim of this paper was to.

Language: English MeSH: Auditory Threshold/radiation effects*; Psychomotor Performance/radiation effects*; Radiation, Ionizing*; Reaction Time/radiation effects*; Visual Perception/radiation effects* Publication Type(s): Technical Report Notes: Cover title.

Performing organization: Johns Hopkins University School of Medicine. "March ". Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF.

Visit to get more information about this book, to buy it in print, or to download it as a free PDF. Purpose Compared to photon-based radiotherapy, protons deliver less radiation to healthy tissue resulting in the potential reduction of late complications such as sensorineural hearing loss (SNHL).

We report early auditory outcomes in children treated with proton radiotherapy (PRT) for : Johnnie K. Bass, Jie Huang, Chia-Ho Hua, Shaum P.

Bhagat, Lisa Lucks Mendel, Arzu Onar-Thomas, Danie. IONIZING RADIATION IONIZING RADIATION Definition “ It is a type of radiation that is able to disrupt atoms and molecules on which they pass through, giving rise to ions and free radicals”. Sources – x-rays, radioactive material produce alpha, beta, and gamma radiation, cosmic rays from the sun and space.

Radiation Dose in Medicine in which they outlined numerous steps and interventions designed to help address this issue.6 The end user must be aware that there is an age and sex variable regarding adverse organ tissue effects from ionizing radiation.

Typically children and women (breast and ovaries)File Size: KB. Accumulating data suggests that exposure to X-radiation may result in serious health concerns and adverse consequences if used intermittently and when doses of radiation exceed certain thresholds (Hammer et al., ; Bailey et al., ).

Previous studies have investigated the potential hazards of IR and their effect on developing by: 6.