LOM chapter 20

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82 terms

nuclear medicine

what is the medical specialty that studies the characteristics and uses of radioactive substances in diagnosis of disease

radiologist

specializes diagnostic techniques such as ultrasound, MRI, and CT scans

radiopaque

absorbs most of the x-rays it is exposed to

barium enema

metallic powder is introduced to the large intestine and x-rays are taken

IVP

x-ray of the renal pelvis and urinary tract after injecting dye into a vein

myelogram

x-ray of spinal cord

arthrogram

an x-ray of a joint

tomography

term that best describes an x-ray test to show an organ in depth

CT scan

magnetic and radio waves are used to create image

MRI

sagittal, frontal, and cross-sectional images are produced using magnetic and radio waves

PA view

which x-ray view is the patient upright with the back to the x-ray machine and the film to the chest

adduction

movment toward the midline of the body

radioisotope

substance that gives off high-energy particles or rays

perfusion study of the lung

which test is radiopharmaceutical injected intravenously and traced within the vessels of the lung

vivo test

experiments are performed in a living organism

cirrhosis and splenomegaly due to abcess or tumor

what can liver and spleen scans detect

placement of drainage catheter

interventional radiologists perform all of the following except...

contrast material

what is Thallium-201

ultrasound

in which procedure is a transducer used

PACS

system to replace a traditional films with digital equivalents

FDG

radiopharmaceutical used in a PET scan

DICOM

protocol for transmission between imaging devices

SPECT

technique using a radioactive substance and a computer to create three- dimensional images

radiopaque

obstructing the passage of x-rays

radiolucent

permitting the passage of x-rays

radiographer

aids physicians in performing ultrasound procedures

radionuclide

radioactive element that gives off energy in the form of radiation

radiopharmaceutical

radioactive drug administered for diagnostic purposes

ionization

transformation of stable substances into changed particles

nuclear medicine

study of uses of radioactive substances in the diagnosis of disease

contrast studies

radiopaue substances are given and x-rays taken

cineradiography

use of motion picture techniques to record x-ray images

psitron emission tomography

radioactive substance is given intraveneously and a cross-sectional image is created of cellular metabolism based on local concentration of the radioactive substance

ultrasonography

echoes of high frequency sound waves are used to diagnose disease

fluroscopy

x-ray beams are focused from the body onto an image intensifier that glows as a result of the ionizing effect of x-rays

magnetic resonance imaging

a magnetic field and radio waves are used to form images of the body

computed tomography

x-ray pictures are taken circularly around an area of the body and a computer synthesizes the information into a composite axial picture

interventional radiology

theraputic procedures are performed by radiologist under the guidance of fluoroscopy or ultrasound

in vitro

test performed outside a living organism

radiopharmaceutical

radioactive drug that is administered safley for diagnostic and theraputic purposes

bone scan

imaging technique in which a radiopharmeceutical is given intravenously and taken up by bone tissue followed by scanning to detect the amount of radioactive substance

spinal cord

myelography is for the

renal pelvis of kidney and urinary tract

pyelography is for the

blood vessels

angiography is for the

joints

arthrography is for the

esophagus, stomch, and small intestine

upper GI series is for the

bile vessels (Ducts)

cholangiography is for the

lower gastrointestinal tract

barium enema is for the

uterus and fallopian tubes

hyterosalpingography is for the

eversion

turning outward

cineradiography

use of motion picture techniques to record a reies of x-ray images using fluroscopy

in vivo

measurment or observation within a living organism

radiolucent

permitting passage of most x-rays

uptake

rate of absorption of a radionuclide into an organ or tissue

in vitro

a procedure in which something is measured or observed outside a living organsim

fluroscence

the emission of glowing light resulting from exposure to and absorption of radiation

radiostope

radioactive form of a substance

scintigraphy

process(two dimensional) used to detect radioactivity emitted in diagnostic imaging

hyterosalpingography

x-ray record of the uterus and fallopian tubes

positron emission tomography

radioactive substances produce cross-sectional images of regions of the body

radiopharmeceutical

radioactive drug that is administered for diagnostic or theraputic purposes

theraputic

pertaining to treatment

radiopaque

obstructing the passage of x-rays

computed tomography

diagnostic x-ray procedure in which cross-sectional images are made of specific body segments

intravenous pyelography

x-ray record of the renal pelvis

cholangiography

process of recording x-ray images of bile vessels

later decubitus

x-ray position; lying down and on ones side

echocardiography

process of recording sound waves in order to produce an image of the heart

tracer studies

radionuclides are used as tags attached to chemicals and followed throughout the body

99m technetium sestambi scan

test of blood flow to the heart

half-life

time required for a radioactive substance to lose half its radioactivity by disintergration

gamma rays

high energy rays emitted by radioactive substances

interventional radiology

theraputic procedures performed by a radiologist

ionization

transformation of electrically neutral substances into electrically charges particles

computed tomography

diagnostic x-ray procedure whereby a cross-sectional and other images of a specific body segment are produced

contrast studies

materials are injected to obtain contrast with surrounding tissue when shown on x-ray film

gamma camera

materials to detect gamma rays emitted from radiopharmaceauticals during scanning for diagnostic purposes

magnetic resonance

magnetic field and radio waves produced images of the body in three planes

labeled compound

radiopharmeceutical used in nuclear medicine

radioimmunoassay

test that combines radioactive chemicals and antibodies to detect minute quantities of substances in a patients blood

radiostope

radioactive form of an element; radionuclide

radiology

medical specialty concerned with the study of x-rays and their use in the diagnosis of disease

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