Radiology

non-destructive technique for imaging internal structures of objects or organisms

Radiology ( ) is the medical specialty that uses medical imaging to diagnose diseases and guide treatment within the bodies of humans and other animals. It began with radiography (which is why its name has a root referring to radiation), but today it includes all imaging modalities. This includes technologies that use no ionizing electromagnetic radiation, such as ultrasonography and magnetic resonance imaging (MRI), as well as others that do use radiation, such as computed tomography (CT), fluoroscopy, and nuclear medicine including positron emission tomography (PET). Interventional radiology

medical imaging procedure using X-rays to produce cross-sectional images

health problems caused by exposure to very high levels of ionizing radiation

medical specialty

Echocardiography, also known as cardiac ultrasound, is the use of ultrasound to examine the heart. It is a type of medical imaging, using standard ultrasound or Doppler ultrasound. The visual image formed using this technique is called an echocardiogram, a cardiac echo, or simply an echo.

vacuum tube that converts electrical input power into X-rays

thumb|300px|Example of a particle collimator A collimator is a device which narrows a beam of particles or waves. “To narrow” can mean either to cause the directions of motion to become more aligned in a specific direction (i.e., make collimated light or parallel rays), or to cause the spatial cross section of the beam to become smaller (beam limiting device).

Neuroimaging is the use of quantitative (computational) techniques to study the structure and function of the central nervous system, developed as an objective way of scientifically studying the healthy human brain in a non-invasive manner. Increasingly it is also being used for quantitative research studies of brain disease and psychiatric illness. Neuroimaging is highly multidisciplinary involving neuroscience, computer science, psychology and statistics, and is not a medical specialty.

chemical compound

measure of the cancer risk to an organism due to ionizing radiation adjusted by tissue type factor

Radiographers (radiologic technologists) are healthcare professionals who perform medical imaging and radiation therapy. Medical imaging is used for the diagnosis of pathology, while radiation therapy is used for treatment.

diagnostic test for bone mineral density testing

imaging technique used in nuclear medicine

quantitative scale for describing radiodensity

an unanticipated finding which is not related to the original diagnostic inquiry

International observance, 8 November

establishment of the age of a human individual (for example by examination of their skeletal structure)

type of diagnosis

Radiodensity (or radiopacity) refers to the degree of opacity to the radio wave and X-ray portion of the electromagnetic spectrum: that is, the relative inability of those kinds of electromagnetic radiation to pass through a particular material. Radiolucency or hypodensity indicates greater passage (greater transradiancy) to X-ray photons and is the analogue of transparency and translucency with visible light. Materials that inhibit the passage of electromagnetic radiation are called radiodense or radiopaque, while those that allow radiation to pass more freely are referred to as radiolucent.

system designed to support administration of radiology services and facilities

right|thumb|alt=A CT scan of a patient's chest displayed|A CT scan of a patient's chest is displayed through teleradiology. Teleradiology is the transmission of radiological patient images from procedures such as x-rays, Computed tomography (CT), and MRI imaging, from one location to another for the purposes of sharing studies with other radiologists and physicians. Teleradiology allows radiologists to provide services without actually having to be at the location of the patient. This is particularly important when a sub-specialist such as an MRI radiologist, neuroradiologist, pediatric radiol

Slang term

form of kidney damage in which there has been recent exposure to medical imaging contrast material

estimate object properties from a finite number of projections

acquired or congenital anomaly in the aorta in which a communication exists between the ascending aorta and the pulmonary artery

device for limiting radiation scatter

preoperative method

The term radiogenomics is used in two contexts: either to refer to the study of genetic variation associated with response to radiation (radiation genomics) or to refer to the correlation between cancer imaging features and gene expression (imaging genomics).