A specialty concerned with the use of x-ray and other forms of radiant energy in the diagnosis and treatment of disease.
Hospital department which is responsible for the administration and provision of x-ray diagnostic and therapeutic services.
Subspecialty of radiology that combines organ system radiography, catheter techniques and sectional imaging.
The electronic transmission of radiological images from one location to another for the purposes of interpretation and/or consultation. Users in different locations may simultaneously view images with greater access to secondary consultations and improved continuing education. (From American College of Radiology, ACR Standard for Teleradiology, 1994, p3)
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).
Any visual display of structural or functional patterns of organs or tissues for diagnostic evaluation. It includes measuring physiologic and metabolic responses to physical and chemical stimuli, as well as ultramicroscopy.
Systems composed of a computer or computers, peripheral equipment, such as disks, printers, and terminals, and telecommunications capabilities.
Radiographic techniques used in dentistry.
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.
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.
Radiography of the central nervous system.
The procedures involved in combining separately developed modules, components, or subsystems so that they work together as a complete system. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A system containing any combination of computers, computer terminals, printers, audio or visual display devices, or telephones interconnected by telecommunications equipment or cables: used to transmit or receive information. (Random House Unabridged Dictionary, 2d ed)
A compound used as an x-ray contrast medium that occurs in nature as the mineral barite. It is also used in various manufacturing applications and mixed into heavy concrete to serve as a radiation shield.
Integrated, computer-assisted systems designed to store, manipulate, and retrieve information concerned with the administrative and clinical aspects of providing medical services within the hospital.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
A film base coated with an emulsion designed for use with x-rays.
Software capable of recognizing dictation and transcribing the spoken words into written text.
Communications networks connecting various hardware devices together within or between buildings by means of a continuous cable or voice data telephone system.
X-ray visualization of the chest and organs of the thoracic cavity. It is not restricted to visualization of the lungs.
Computer-based systems for input, storage, display, retrieval, and printing of information contained in a patient's medical record.
A management function in which standards and guidelines are developed for the development, maintenance, and handling of forms and records.
Computer systems or networks designed to provide radiographic interpretive information.
The portion of an interactive computer program that issues messages to and receives commands from a user.
Computer processing of a language with rules that reflect and describe current usage rather than prescribed usage.
Organized activities related to the storage, location, search, and retrieval of information.
Input/output devices designed to receive data in an environment associated with the job to be performed, and capable of transmitting entries to, and obtaining output from, the system of which it is a part. (Computer Dictionary, 4th ed.)
Screens which absorb the energy in the x-ray beam that has penetrated the patient and convert this energy into a light pattern which has as nearly as possible the same information as the original x-ray beam. The more light a screen produces for a given input of x-radiation, the less x-ray exposure and thus shorter exposure time are needed to expose the film. In most film-screen systems, the film is sandwiched between two screens in a cassette so that the emulsion on each side is exposed to the light from its contiguous screen.
Hospitals organized and controlled by a group of physicians who practice together and provide each other with mutual support.
The construction or arrangement of a task so that it may be done with the greatest possible efficiency.
Materials, frequently computer applications, that combine some or all of text, sound, graphics, animation, and video into integrated packages. (Thesaurus of ERIC Descriptors, 1994)
The capacity of an organization, institution, or business to produce desired results with a minimum expenditure of energy, time, money, personnel, materiel, etc.
A self-learning technique, usually online, involving interaction of the student with programmed instructional materials.
Stipends or grants-in-aid granted by foundations or institutions to individuals for study.
Societies whose membership is limited to physicians.
Global conflict primarily fought on European continent, that occurred between 1914 and 1918.
The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv).
Programs of training in medicine and medical specialties offered by hospitals for graduates of medicine to meet the requirements established by accrediting authorities.
Detailed account or statement or formal record of data resulting from empirical inquiry.
Individuals professionally qualified in the management of patients' records. Duties may include planning, designing, and managing systems for patient administrative and clinical data, as well as patient medical records. The concept includes medical record technicians.
Software designed to store, manipulate, manage, and control data for specific uses.
Uniform method for health care providers and medical suppliers to report professional services, procedures, and supplies. It consists of alphanumeric codes and modifiers for the use of all public and private health insurers. It is developed by the Centers for Medicare and Medicaid Services.
Radiographic examination of the breast.
A research and development program initiated by the NATIONAL LIBRARY OF MEDICINE to build knowledge sources for the purpose of aiding the development of systems that help health professionals retrieve and integrate biomedical information. The knowledge sources can be used to link disparate information systems to overcome retrieval problems caused by differences in terminology and the scattering of relevant information across many databases. The three knowledge sources are the Metathesaurus, the Semantic Network, and the Specialist Lexicon.
Extraoral body-section radiography depicting an entire maxilla, or both maxilla and mandible, on a single film.
The capability to perform acceptably those duties directly related to patient care.
A branch of biology dealing with the structure of organisms.
Computer disks storing data with a maximum reduction of space and bandwidth. The compact size reduces cost of transmission and storage.
Libraries in which a major proportion of the resources are available in machine-readable format, rather than on paper or MICROFORM.
A specialty field of radiology concerned with diagnostic, therapeutic, and investigative use of radioactive compounds in a pharmaceutical form.
The process of converting analog data such as continually measured voltage to discrete, digital form.
Descriptive terms and identifying codes for reporting medical services and procedures performed by PHYSICIANS. It is produced by the AMERICAN MEDICAL ASSOCIATION and used in insurance claim reporting for MEDICARE; MEDICAID; and private health insurance programs (From CPT 2002).
Major administrative divisions of the hospital.
Management of the acquisition, organization, storage, retrieval, and dissemination of information. (From Thesaurus of ERIC Descriptors, 1994)
The terms, expressions, designations, or symbols used in a particular science, discipline, or specialized subject area.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
Specifications and instructions applied to the software.
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
Radiography of the gallbladder after ingestion of a contrast medium.
The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material).
Various units or machines that operate in combination or in conjunction with a computer but are not physically part of it. Peripheral devices typically display computer data, store data from the computer and return the data to the computer on demand, prepare data for human use, or acquire data from a source and convert it to a form usable by a computer. (Computer Dictionary, 4th ed.)
A subspecialty of medical oncology and radiology concerned with the radiotherapy of cancer.
Contractual arrangement between the lessor (owner) and the lessee in which the use of equipment or facilities is granted to the lessee for a period of time and at a specified rate.
Data processing largely performed by automatic means.
Sequential operating programs and data which instruct the functioning of a digital computer.
Radiographic examination of the process of defecation after the instillation of a CONTRAST MEDIA into the rectum.
Systematic organization, storage, retrieval, and dissemination of specialized information, especially of a scientific or technical nature (From ALA Glossary of Library and Information Science, 1983). It often involves authenticating or validating information.
Those support services other than room, board, and medical and nursing services that are provided to hospital patients in the course of care. They include such services as laboratory, radiology, pharmacy, and physical therapy services.
Educational programs for medical graduates entering a specialty. They include formal specialty training as well as academic work in the clinical and basic medical sciences, and may lead to board certification or an advanced medical degree.
Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.
Data collected during dental examination for the purpose of study, diagnosis, or treatment planning.
Protective measures against unauthorized access to or interference with computer operating systems, telecommunications, or data structures, especially the modification, deletion, destruction, or release of data in computers. It includes methods of forestalling interference by computer viruses or so-called computer hackers aiming to compromise stored data.
Radiographic visualization of the body between the thorax and the pelvis, i.e., within the peritoneal cavity.
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)
Radiography of blood vessels after injection of a contrast medium.
A specified list of terms with a fixed and unalterable meaning, and from which a selection is made when CATALOGING; ABSTRACTING AND INDEXING; or searching BOOKS; JOURNALS AS TOPIC; and other documents. The control is intended to avoid the scattering of related subjects under different headings (SUBJECT HEADINGS). The list may be altered or extended only by the publisher or issuing agency. (From Harrod's Librarians' Glossary, 7th ed, p163)
Organized collections of computer records, standardized in format and content, that are stored in any of a variety of computer-readable modes. They are the basic sets of data from which computer-readable files are created. (from ALA Glossary of Library and Information Science, 1983)
Hospital department responsible for the purchasing of supplies and equipment.
The assessing of academic or educational achievement. It includes all aspects of testing and test construction.
Description of pattern of recurrent functions or procedures frequently found in organizational processes, such as notification, decision, and action.
Incorrect diagnoses after clinical examination or technical diagnostic procedures.
The field which deals with illustrative clarification of biomedical concepts, as in the use of diagrams and drawings. The illustration may be produced by hand, photography, computer, or other electronic or mechanical methods.
Professional medical personnel who provide care to patients in an organized facility, institution or agency.
Devices capable of receiving data, retaining data for an indefinite or finite period of time, and supplying data upon demand.
An island south of Australia and the smallest state of the Commonwealth. Its capital is Hobart. It was discovered and named Van Diemen's Island in 1642 by Abel Tasman, a Dutch navigator, in honor of the Dutch governor-general of the Dutch East Indian colonies. It was renamed for the discoverer in 1853. In 1803 it was taken over by Great Britain and was used as a penal colony. It was granted government in 1856 and federated as a state in 1901. (From Webster's New Geographical Dictionary, 1988, p1190 & Room, Brewer's Dictionary of Names, p535)
The practice of sending a patient to another program or practitioner for services or advice which the referring source is not prepared to provide.
An odontogenic fibroma in which cells have developed into cementoblasts and which consists largely of cementum.
A non-invasive imaging method that uses computed tomographic data combined with specialized imaging software to examine the colon.
Use of ultrasound for imaging the breast. The most frequent application is the diagnosis of neoplasms of the female breast.
An approach or process of practicing oral health care that requires the judicious integration of systematic assessments of clinical relevant scientific evidence, relating to the patient's oral and medical condition and history, with the dentist's clinical expertise and the patient's treatment needs and preferences. (from J Am Dent Assoc 134: 689, 2003)
The transmission of messages to staff and patients within a hospital.
Activities performed to identify concepts and aspects of published information and research reports.
The total amount of work to be performed by an individual, a department, or other group of workers in a period of time.
The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.
Recording of pertinent information concerning patient's illness or illnesses.
The organization and operation of the business aspects of a physician's practice.
Hospital department which administers and provides pathology services.
Cooperation among hospitals for the purpose of sharing various departmental services, e.g., pharmacy, laundry, data processing, etc.
The architecture, functional design, and construction of hospitals.
The observation and analysis of movements in a task with an emphasis on the amount of time required to perform the task.
Ratio of output to effort, or the ratio of effort produced to energy expended.
Professional medical personnel approved to provide care to patients in a hospital.
A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.
Terms or expressions which provide the major means of access by subject to the bibliographic unit.
Customer satisfaction or dissatisfaction with a benefit or service received.
Consultation via remote telecommunications, generally for the purpose of diagnosis or treatment of a patient at a site remote from the patient or primary physician.
A solution or compound that is introduced into the RECTUM with the purpose of cleansing the COLON or for diagnostic procedures.
Production of an image when x-rays strike a fluorescent screen.
Use of an interactive computer system designed to assist the physician or other health professional in choosing between certain relationships or variables for the purpose of making a diagnostic or therapeutic decision.
Small computers using LSI (large-scale integration) microprocessor chips as the CPU (central processing unit) and semiconductor memories for compact, inexpensive storage of program instructions and data. They are smaller and less expensive than minicomputers and are usually built into a dedicated system where they are optimized for a particular application. "Microprocessor" may refer to just the CPU or the entire microcomputer.
The course of learning of an individual or a group. It is a measure of performance plotted over time.
The visualization of deep structures of the body by recording the reflections or echoes of ultrasonic pulses directed into the tissues. Use of ultrasound for imaging or diagnostic purposes employs frequencies ranging from 1.6 to 10 megahertz.
Materials in intermediate state between solid and liquid.
Extensive collections, reputedly complete, of facts and data garnered from material of a specialized subject area and made available for analysis and application. The collection can be automated by various contemporary methods for retrieval. The concept should be differentiated from DATABASES, BIBLIOGRAPHIC which is restricted to collections of bibliographic references.
Compliance with a set of standards defined by non-governmental organizations. Certification is applied for by individuals on a voluntary basis and represents a professional status when achieved, e.g., certification for a medical specialty.
Procedures of applying ENDOSCOPES for disease diagnosis and treatment. Endoscopy involves passing an optical instrument through a small incision in the skin i.e., percutaneous; or through a natural orifice and along natural body pathways such as the digestive tract; and/or through an incision in the wall of a tubular structure or organ, i.e. transluminal, to examine or perform surgery on the interior parts of the body.
The circulation or wide dispersal of information.
Conducting a biopsy procedure with the aid of a MEDICAL IMAGING modality.
Computer-based systems for use in personnel management in a facility, e.g., distribution of caregivers with relation to patient needs.
Minimally invasive procedures guided with the aid of magnetic resonance imaging to visualize tissue structures.
Visualization of the heart structure and cardiac blood flow for diagnostic evaluation or to guide cardiac procedures via techniques including ENDOSCOPY (cardiac endoscopy, sometimes refered to as cardioscopy), RADIONUCLIDE IMAGING; MAGNETIC RESONANCE IMAGING; TOMOGRAPHY; or ULTRASONOGRAPHY.
Management review designed to evaluate efficiency and to identify areas in need of management improvement within the institution in order to ensure effectiveness in meeting organizational goals.
A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.
A system for verifying and maintaining a desired level of quality in a product or process by careful planning, use of proper equipment, continued inspection, and corrective action as required. (Random House Unabridged Dictionary, 2d ed)
The recognition of professional or technical competence through registration, certification, licensure, admission to association membership, the award of a diploma or degree, etc.
Organized procedures for establishing patient identity, including use of bracelets, etc.
Devices or objects in various imaging techniques used to visualize or enhance visualization by simulating conditions encountered in the procedure. Phantoms are used very often in procedures employing or measuring x-irradiation or radioactive material to evaluate performance. Phantoms often have properties similar to human tissue. Water demonstrates absorbing properties similar to normal tissue, hence water-filled phantoms are used to map radiation levels. Phantoms are used also as teaching aids to simulate real conditions with x-ray or ultrasonic machines. (From Iturralde, Dictionary and Handbook of Nuclear Medicine and Clinical Imaging, 1990)
Computed tomography modalities which use a cone or pyramid-shaped beam of radiation.
In INFORMATION RETRIEVAL, machine-sensing or identification of visible patterns (shapes, forms, and configurations). (Harrod's Librarians' Glossary, 7th ed)
Substances used to allow enhanced visualization of tissues.
Pathological processes of the BREAST.
The capability to perform the duties of one's profession generally, or to perform a particular professional task, with skill of an acceptable quality.
The study of the heart, its physiology, and its functions.
Use of sophisticated analysis tools to sort through, organize, examine, and combine large sets of information.
The field of information science concerned with the analysis and dissemination of medical data through the application of computers to various aspects of health care and medicine.
Attitudes of personnel toward their patients, other professionals, toward the medical care system, etc.
A vocabulary database of universal identifiers for laboratory and clinical test results. Its purpose is to facilitate the exchange and pooling of results for clinical care, outcomes management, and research. It is produced by the Regenstrief Institute. (LOINC and RELMA [Internet]. Indianapolis: The Regenstrief Institute; c1995-2001 [cited 2002 Apr 2]. Available from http://www.regenstrief.org/loinc)
Operative procedures for the treatment of vascular disorders.
Individuals referred to for expert or professional advice or services.
A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.