Cine MRI short- (top) and long-axis (bottom) images, at end-diastole (end of ventricular filling, left), and end-systole (end of ejection, right). Contours show inner (green) and outer (blue) boundaries of the left ventricle, and the position of the mitral valve (red).
Radiation, Ionizing
This includes alpha and beta particles, gamma rays, x-rays, and neutrons.
Ionizing radiation has enough energy to remove electrons from atoms and molecules, thereby ionizing them.
Ionizing radiation is used in radiotherapy, diagnostic imaging, and other medical and scientific applications.
Most cited protocols related to «Radiation, Ionizing»
where is assumed that the tissue is irradiated with a fractionated treatment schedule of equal dose fractions d up to a dose D and the parameters have the same meaning than in Eq. 7. Since a dose-response model as described by Eq. 12 is based on various assumptions and thus related to uncertainties it was decided, similar to the carcinoma case, to study three cases. The first one is defined by looking at minimal repopulation/repair effects by using Eq. 12 with a fixed R = 0.1. The second one is defined by looking at intermediate repopulation/repair effects by using Eq. 12 with a fixed R = 0.5. The third case is a dose-response relationship in case of full repopulation/repair, and is derived by taking Eq. 12 in the limit of R = 1:
Organ equivalent dose for the dose-response curves for sarcoma induction defined by Eqs. 12 and 13 become, in the limit of small dose:
Sarcoma risk from a homogenous distribution of small dose is proportional to the cube of dose and thus results in a much lower cancer risk than expected from a linear model. This is consistent with the observations of the A-bomb survivors.
Most recents protocols related to «Radiation, Ionizing»
Example 7
An amount of any one of the compounds of the present invention in combination with an anti-cancer agent is administered to a subject afflicted with brain cancer. The amount of the compound is effective to enhance the anti-cancer activity of the anti-cancer agent.
An amount of any one of the compounds of the present invention in combination with ionizing radiation, x-radiation, docetaxel or temozolomide is administered to a subject afflicted with brain cancer. The amount of the compound is effective to enhance the anti-cancer activity of the ionizing radiation, x-radiation, docetaxel or temozolomide.
An amount of any one of the compounds of the present invention in combination with an anti-cancer agent is administered to a subject afflicted with diffuse intrinsic pontine glioma or glioblastoma multiforme. The amount of the compound is effective to enhance the anti-cancer activity of the anti-cancer agent.
An amount of any one of the compounds of the present invention in combination with ionizing radiation, x-radiation, docetaxel or temozolomide is administered to a subject afflicted with diffuse intrinsic pontine glioma or glioblastoma multiforme. The amount of the compound is effective to enhance the anti-cancer activity of the ionizing radiation, x-radiation, docetaxel or temozolomide.
The genome location of each significant SNP identified using LOSITAN was expanded to a 10 kb genomic interval of CanFam3 (5 kb either side of the SNP coordinates). We then surveyed each of the 10 kb regions for the presence of genes and identified corresponding gene ontology (GO) terms through the Mouse Genome Informatics Batch Query Search [48 (link)]. GO terms were evaluated for putative associations towards the exposures faced within the environment (e.g., GO:0,010,212 “response to ionizing radiation”).
The group of subjects studied consisted of individuals who were exposed to turpentine vapors on a daily basis, i.e., students of the Department of Fine Arts at the Academy of Arts in Osijek, J. J. Strossmayer University of Osijek. The criteria for inclusion in the group of subjects were that they were under 40 years of age, that they had been exposed to turpentine, and that they had not been exposed to ionizing radiation in the last six months before the study or to antibiotic therapy in the last month. After providing written informed consent, subjects also completed a questionnaire about their smoking habits, alcohol consumption, health status, family history of cancer, past or current medication use, and diagnostic procedures. No private details about subjects participating in the studies were or will be released to the public. Twenty-two subjects who met the specified criteria participated in the study, and a corresponding control group was formed.
The control group consisted of individuals of similar age, sex, and lifestyle as the test group, with the condition that they were not exposed to turpentine. The subjects in the control group also gave informed consent and, as with the test subjects, completed a questionnaire about their lifestyle habits. On this basis, the suitability of the control group was checked. The criteria for inclusion in the control group were that the subjects were under 40 years of age, had not been exposed to turpentine, had not been exposed to ionizing radiation or any other chemical substance for at least six months before participating in the study, and had not taken antibiotics in the past month. Twenty subjects in the control group participated in the study, and their eligibility was subsequently evaluated using statistical methods.
Chemicals and media used in this study: F-10 Ham medium was from EuroClone, Pero, Italy; L-glutamine was from Lonza, Basel, Switzerland; cytochalasin-B, methanol, and glacial acetic acid were from Sigma, St. Louis, MO, USA; phytohemagglutinin and Gurr Buffer Tablets were from Gibco, Paisley, Scotland, United Kingdom; Giemsa dye was from Kemijsko tehnički laboratorij Šlaković, Zagreb, Croatia; heparinized vacutainer tubes were from Becton Dickinson, Franklin Lakes, NJ, USA. All of the other reagents used were laboratory-grade chemicals from Kemika, Zagreb, Croatia.
Peripheral blood was collected by venipuncture from 8 November 2016 to 6 December 2016 in sterile heparinized tubes at the Laboratory of Medical Genetics, Faculty of Medicine Osijek. All blood samples collected were handled in the same way and processed as soon as possible, not more than four hours after blood collection.
The cytokinesis-block micronucleus (CBMN) assay was performed as described by the HUMN project [11 (link)], with minor modifications to the protocol. A total of 500 μL of whole blood was added to F-10 Ham medium supplemented with phytohemagglutinin and L-glutamine and incubated for 44 h at 37 °C and 5% CO2. After 44 h of incubation, Cytochalasin-B was added to each sample at a final concentration of 6 μg/mL to prevent cytokinesis. After 28 h of Cytochalasin-B, for a total of 72 h of incubation, cells were harvested. Lymphocytes were fixed in a methanol–acetic acid solution, air dried overnight, and stained with 5% Giemsa solution.
Microscopic analysis was performed using a light microscope (Zeiss Axioscope 2 MOT) with a final magnification of 1000×. Each subject was analysed for the total number of MNi, NPBs, and NBUDs per 1000 binucleated cells (BNCs) according to the criteria published by Fenech [12 (link)]. Only BNCs with well-preserved cytoplasm were evaluated for analysis. The frequencies of mononuclear, binucleated, and multinucleated cells were also evaluated in 500 cells per subject. CBPI was calculated on the same slides using the formula: (M1 + 2M2 + 3M3 + 4M4)/500, where M1-M4 represent the number of cells with one to four nuclei [13 (link)].
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More about "Radiation, Ionizing"
This type of radiation includes alpha and beta particles, gamma rays, X-rays, and neutrons.
The ability to ionize atoms and molecules is what makes ionizing radiation so potent, as it can disrupt the normal functioning of cells and tissues.
Ionizing radiation has a wide range of applications in various fields, including radiotherapy, diagnostic imaging, and other medical and scientific applications.
In radiotherapy, for example, ionizing radiation is used to treat cancer by targeting and damaging the DNA of cancer cells, leading to their death or inhibition of their growth.
Diagnostic imaging, such as X-rays and CT scans, also relies on ionizing radiation to create detailed images of the body's internal structures.
In addition to its medical uses, ionizing radiation is also employed in other scientific and industrial applications, such as the sterilization of medical equipment, the preservation of food, and the production of certain types of materials.
It's important to note that while ionizing radiation can be highly beneficial, it also carries risks and must be handled with caution.
Exposure to high levels of ionizing radiation can lead to adverse health effects, such as radiation sickness, tissue damage, and an increased risk of cancer.
Proper safety protocols and protective measures are essential when working with ionizing radiation.
Researchers working with ionizing radiation may also utilize related materials and techniques, such as FBS (Fetal Bovine Serum), DMEM (Dulbecco's Modified Eagle Medium), Crystal violet, X-RAD 320, Penicillin/Streptomycin, Penicillin, Streptomycin, Lipofectamine 2000, and the RS2000 X-ray irradiator.
These tools and materials can be used to support various experiments and investigations involving ionizing radiation.
By understanding the properties and applications of ionizing radiation, researchers and professionals in the field can optimize their research, ensure the safety of their work, and unlock new insights that can lead to advancements in various industries and disciplines.