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Radiochemistry
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D011854 |
[The study of the chemical and physical phenomena of radioactive substances.
] |
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Radiodermatitis
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D011855 |
[Acute skin manifestations at the site of previous exposure to ionizing radiation. It is triggered by the administration of certain drugs days or years after the initial radiation exposure.
, A cutaneous inflammatory reaction occurring as a result of exposure to ionizing radiation.
] |
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Radiofrequency Ablation
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D000078703 |
[Removal of tissue using heat generated from electrodes delivering an alternating electrical current in the frequency of RADIO WAVES.
] |
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Radiofrequency Therapy
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D000078702 |
[The use of RADIO WAVES to conduct therapeutic procedures. The specific frequency, dosage, and intensity used vary depending on the desired effects which include heating, electrical stimulation, or ablation of tissues.
] |
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Radiographic Image Enhancement
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D011856 |
[Improvement in the quality of an x-ray image by use of an intensifying screen, tube, or filter and by optimum exposure techniques. Digital processing methods are often employed.
] |
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Radiographic Image Interpretation, Computer-Assisted
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D011857 |
[Computer systems or networks designed to provide radiographic interpretive information.
] |
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Radiographic Magnification
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D011858 |
[Use of optic and geometric techniques to enhance radiographic image quality and interpretation. It includes use of microfocal X-ray tubes and intensifying fluoroscopic screens.
] |
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Radiography
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D011859 |
[Examination of any part of the body for diagnostic purposes by means of X-RAYS or GAMMA RAYS, recording the image on a sensitized surface (such as photographic film).
] |
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Radiography, Abdominal
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D011860 |
[Radiographic visualization of the body between the thorax and the pelvis, i.e., within the peritoneal cavity.
] |
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Radiography, Bitewing
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D016300 |
[Technique involving the passage of X-rays through oral structures to create a film record while a central tab or wing of dental X-ray film is being held between upper and lower teeth.
] |
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Radiography, Dental
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D011861 |
[Radiographic techniques used in dentistry.
] |
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Radiography, Dental, Digital
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D019252 |
[A rapid, low-dose, digital imaging system using a small intraoral sensor instead of radiographic film, an intensifying screen, and a charge-coupled device. It presents the possibility of reduced patient exposure and minimal distortion, although resolution and latitude are inferior to standard dental radiography. A receiver is placed in the mouth, routing signals to a computer which images the signals on a screen or in print. It includes digitizing from x-ray film or any other detector. (From MEDLINE abstracts; personal communication from Dr. Charles Berthold, NIDR)
] |
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Radiography, Dual-Energy Scanned Projection
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D015900 |
[A method of producing a high-quality scan by digitizing and subtracting the images produced by high- and low-energy x-rays.
] |
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Radiography, Interventional
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D015641 |
[Diagnostic and therapeutic procedures that are invasive or surgical in nature, and require the expertise of a specially trained radiologist. In general, they are more invasive than diagnostic imaging but less invasive than major surgery. They often involve catheterization, fluoroscopy, or computed tomography. Some examples include percutaneous transhepatic cholangiography, percutaneous transthoracic biopsy, balloon angioplasty, and arterial embolization.
] |
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Radiography, Panoramic
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D011862 |
[Extraoral body-section radiography depicting an entire maxilla, or both maxilla and mandible, on a single film.
] |
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Radiography, Thoracic
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D013902 |
[X-ray visualization of the chest and organs of the thoracic cavity. It is not restricted to visualization of the lungs.
] |
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Radioimmunoassay
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D011863 |
[Classic quantitative assay for detection of antigen-antibody reactions using a radioactively labeled substance (radioligand) either directly or indirectly to measure the binding of the unlabeled substance to a specific antibody or other receptor system. Non-immunogenic substances (e.g., haptens) can be measured if coupled to larger carrier proteins (e.g., bovine gamma-globulin or human serum albumin) capable of inducing antibody formation.
] |
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Radioimmunodetection
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D016719 |
[Use of radiolabeled antibodies for diagnostic imaging of neoplasms. Antitumor antibodies are labeled with diverse radionuclides including iodine-131, iodine-123, indium-111, or technetium-99m and injected into the patient. Images are obtained by a scintillation camera.
] |
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Radioimmunoprecipitation Assay
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D015531 |
[Sensitive assay using radiolabeled ANTIGENS to detect specific ANTIBODIES in SERUM. The antigens are allowed to react with the serum and then precipitated using a special reagent such as PROTEIN A sepharose beads. The bound radiolabeled immunoprecipitate is then commonly analyzed by gel electrophoresis.
] |
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Radioimmunosorbent Test
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D011864 |
[Radioimmunoassay of proteins using antibody coupled to an immunosorbent.
] |
