Medical Imaging Techniques PDF

Computed Tomography (CT) breast diseases. It is used as both is an imaging test that helps a diagnostic and screening tool. healthcare providers detect diseases and injuries. It uses a NUCLEAR MEDICINE TECHNOLOGY series of X-rays a...

Computed Tomography (CT) breast diseases. It is used as both is an imaging test that helps a diagnostic and screening tool. healthcare providers detect diseases and injuries. It uses a NUCLEAR MEDICINE TECHNOLOGY series of X-rays and a computer to Branch of radiology that involves create detailed images of your the introduction of radioactive bones and soft tissues. substances into the body for both Recording of a predetermined diagnostic and therapeutic plane in the body using an x-ray purposes beam that is measured, recorded, and then processed by a computer POSITRON EMISSION TOMOGRAPHY for display on a monitor (PET) The creation of sectional images of DIAGNOSTIC MEDICAL SONOGRAPHY the body that demonstrate the a medical imaging modality that physiologic function of various uses sound waves to identify and organs and systems evaluate soft tissue structures in is a type of nuclear medicine the human body for disease and procedure that measures pathology. metabolic activity of the cells of Visualization of deep structures of body tissues. PET is actually a the body by recording the combination of nuclear medicine reflections of pulses of ultrasonic and biochemical analysis. waves directed into the tissue. RADIATION ENERGY Energy transmitted by waves Capacity to operate or work through space or through a The capacity for doing work medium People are exposed to radiation IONIZATION from cosmic rays, as well as to Any process by which a neutral radioactive materials found in the atom gains or loses an electron, soil, water, food, air and also inside thus acquiring a net charge the body. MAGNETIC RESONANCE IMAGING (MRI) RADIATION THERAPY Process of using a magnetic field Branch of radiology involved in the and radiofrequencies to create treatment of disease by means of x- sectional images of the body rays or radioactive substances MAMMOGRAPHY RADIOGRAPHY Radiography of the breast Making of records (radiographs) of An x-ray imaging method used to internal structures of the body by examine the breast for the early passing x-rays or gamma rays detection of cancer and other through the body to act on specially  sensitized film or an imaging plate DiGerent types of ENERGY or system. 1.Potential energy RADIOLOGIC TECHNOLOGIST (RT) Is the ability to do work by virtue of General term applied to an position. individual who performs radiography, radiation therapy, or 2.Kinetic energy nuclear medicine technology. Is the energy of motion. It is possessed by all matter in motion RADIOLOGIST Physician who specializes in the 3.Chemical energy use of x-rays and other forms of Is the energy released by a chemical both ionizing and nonionizing reaction. radiation in the diagnosis and treatment of disease 4.Electrical energy Represents the work that can be done RADIOLOGIST ASSISTANT (RA) when an electron moves through an An advanced-level radiographer electric potential diOerence (voltage). who extends the capacity of the radiologist in the diagnostic 5.Thermal energy (heat) imaging environment, thereby Is the energy of motion at the molecular enhancing patient care level. It is the kinetic energy of molecules and is closely related to temperature. MADICAL RADIATION SCIENCES 6.Nuclear energy What is Radiation? is the energy that is contained within the is energy that is transmitted by waves nucleus of an atom. through space or through a medium (matter) What is Ionization? is any process by which a neutral atom gains or loses an electron, thus acquiring a net charge. What is energy? Is the capacity to operate or work. SOURCES OF IONIZING RADIATION 1.NATURAL ENVIRONMENTAL RADIATION Results in an annual dose of approximately 3 millisieverts (msv) 2.MAN-MADE RADIATION. Man-made radiation results in 3.2 msv annually. An mSv is the unit of eOective dose. It is used to express radiation exposure of populations and radiation risk in those populations.