Chapter 20 Radiology and Nuclear Medicine

nuclear medicine
What is the medical specialty that studies the characteristics and uses of radioactive substances in diagnosis of disease?
specializes diagnostic techniques such as ultrasound, MRI and CT scans
What does a radiologist do?
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absorbs most of the x-rays it is exposed to
Which of the following is true of a radiopaque substance?
metallic powder is introduced to the large intestine and x-rays are taken
Which best describes a barium enema?
x-ray of the renal pelvis and urinary tract after injecting dye into a vein
x-ray of the spinal cord
Which is an x-ray of a joint?
Which term describes an x-ray test to show an organ in depth?
uses ionizing x-rays and a computer to produce transverse and other images of body organs
What best characterizes a CT scan?
saggital, frontal, and cross-sectional images are produced using magnetic and radio waves
What best describes characterizes an MRI?
PA view
In which x-ray view is the patient upright with the back to the x-ray machine and the film to the chest?
moving the part of the body toward the midline of the body
What is the meaning of adduction?
What is a substance that gives off high-energy particles or rays?
perfusion study of the lung
In which test is a radiopharmaceutical injected intravenously and traced within the vessels of the lung?
experiments are performed in a living organism
What is a vivo test?
cirrhosis and splenomegaly due to abscess or tumor
What can liver and spleen scans detect?
administration of radiation therapy
Interventional radiologist perform all of the following except..
What is Thallium-201
In which procedure is a transducer used?
system to replace traditional films with digital equivalents
PACS is a?
radiopharmaceutical used in a PET scan
FDG is a?
protocol for transmission between imaging devices
DICOM is a?
technique using a radioactive substance and a computer to create three-dimensional images
SPECT is a?
time required for a radioactive substance to lose half its radioactivity by disintegration
high-energy rays emitted by radioactive substances
Gamma Rays
therapeutic procedures performed by a radiologist
Interventional Radiology
transformation of electrically neutral substances into electrically charged particles
diagnostic x-ray procedure whereby a cross-sectional and other images of a specific body segment are produced
Computed Tomography ( CT )
Materials are injected to obtain contrast with surrounding tissue when shown on x-ray film
Contrast Studies
machine to detect gamma rays emitted from radiopharmaceuticals during scanning for diagnostic purposes
Gamma Camera
permitting the passage of x-rays
process, test, or procedure performed, measured, or observed in a living organism
In Vivo
radioactive substance is given intravenously and a cross-sectional image is created of cellular metabolism based on local concentration of the radioactive substance
Positron Emission Tomography ( PET )
process, test, or procedure performed, measured, or observed outside a living organism
In Vitro
medical specialty that studies the uses of radioactive substances in diagnosis of disease
Nuclear Medicine
magnetic field and radio waves produce images of the body in three planes (coronal, sagittal, and axial)
Magnetic Resonance ( MR )
radiopharmaceutical used in nuclear medicine studies
Labeled Compound
test that combines radioactive chemicals and antibodies to detect minute quantities of substances in a patients blood
radioactive form of an element; radionuclide
medical specialty concerned with the study of x-rays and their use in the diagnosis of disease
rate of absorption of a radionuclide into an organ or tissue
Image of an area, organ, or tissue obtained from ultrasound, radioactive tracer studies, computed tomography, or magnetic resonance imaging
handheld device that sends and receives ultrasound signals
Ultrasound Transducer
attaching a radionuclide to a chemical and following its path in the body
radiopharmaceutical is inhaled and injected intravenously followed by imaging its passage through the respiratory tract
Ventilation-Perfusion Studies
obstructing the passage of x-rays
diagnostic nuclear medicine test using radiopharmaceuticals and gamma cameras to create images
radioactive tracer is injected intravenously and a computer reconstructs a three-dimensional image based on a composite of many views
Single Photon Emission Computed Tomography
radioactive drug (radionuclide plus chemical) that is administered for diagnostic and therapeutic purposes

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