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Radiology and Nuclear Medicine
Chapter 20- Chabner - The Language of Medicine
159
Medical
Undergraduate 1
02/26/2013

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Term
radioisotope
Definition
A radioactive form of an element (radioisotopes of an element have similar structure but with different weights and charges).
Term
radiopharmaceutical
Definition
Pertaining to the combination of a radioisotope and a drug.
Term
radiographer
Definition
Aids physicians in administering diagnostic x-ray procedures.
Term
hysterosonogram
Definition
Record of sound waves within the uterus (after injection of fluid to distend the uterine cavity).
Term
therapeutic
Definition
Pertaining to treatment (therapy).
Term
in vitro
Definition
Experiments performed in a test tube (glass); outside of a living organism.
Term
in vivo
Definition
Experiments performed within a living organism
Term
angiogram
Definition
Record (x-ray) of blood vessels.
Term
hysterosalpingogram
Definition
Record (x-ray) of the uterus and fallopian tubes.
Term
pyelogram
Definition
Record (x-ray) of the renal pelvis of the kidney.
Term
computed tomography
Definition
Process of recording x-ray images of the body in a cross-sectional view; a computer is used and images taken all around a section of the body.
Term
radiolucent
Definition
Permitting the passage of x-rays (rays shine through).
Term
radiopaque
Definition
Obscuring or obstructing the passage of x-rays.
Term
echocardiography
Definition
Process of recording sound waves (echoes) as they bounce off the heart; a picture is produced that shows the sound waves as they are reflected from tissues of different densities.
Term
ultrasonography
Definition
Process of using ultrasound waves in the body to produce sound echoes that are recorded as an image.
Term
Abduction
Definition
Movement away from the midline of the body.
Term
Adduction
Definition
Movement toward the midline of the body.
Term
Angiogram
Definition
X-ray image of blood vessels after injecting contrast material into the vessels.
Term
Anteroposterior
Definition
In this AP x-ray view, x-rays travel from an anteriorly placed source to a posteriorly placed detector (x-ray beam passes from the front to the back of the body).
Term
Bone scan
Definition
A radioactive (technetium-99m) phosphate compound is injected intravenously and bones are scanned for evidence of tumors.
Term
Cholangiography
Definition
Process of x-ray imaging bile ducts after injecting contrast into the bile ducts.
Term
Computed tomography
Definition
Use of x-ray equipment and a computer to create multiple views of organs, including cross-sectional or axial images.
Term
Contrast studies
Definition
Material (contrast media) is injected into vessels and organs to obtain contrast with surrounding tissues when viewed on x-ray and other images.
Term
Echocardiography
Definition
Sound waves are used to image the structure of the heart.
Term
Eversion
Definition
Turning outward
Term
Extension
Definition
Lengthening or straightening a flexed limb.
Term
Flexion
Definition
Bending a part of the body.
Term
Fluoroscopy
Definition
Use of x-rays and a fluorescent screen to produce real-time video images.
Term
Gamma camera
Definition
Machine to detect gamma rays given off by radiopharmaceuticals (radioactive compounds) during scanning for diagnostic purposes.
Term
Gamma rays
Definition
High-energy rays emitted by radioactive substances in tracer studies.
Term
Half-life
Definition
Time required for a radioactive substance to lose half its radioactivity by disintegration.
Term
Hysterosalpingogram
Definition
X-ray record of the endometrial cavity and fallopian tubes is obtained after injection of contrast material through the vagina and into the endocervical canal
Term
Hysterosonogram
Definition
Saline solution is injected through a catheter inserted through the vagina and into the endocervical canal to distend the uterine cavity, which is then examined by ultrasound.
Term
Interventional radiology
Definition
Therapeutic procedures performed by a radiologist.
Term
Inversion
Definition
Turning inward.
Term
Ionization
Definition
Transformation of electrically neutral substances into electrically charged particles.
Term
Lateral decubitus
Definition
Lying down on one’s side with the x-ray beam horizontally positioned.
Term
Lymphoscintigraphy
Definition
Type of nuclear medicine imaging which provides pictures of the lymphatic system.
Term
Magnetic resonance imaging
Definition
Magnetic field and radio waves produce sagittal, coronal, and axial images of the body; especially effective to image soft tissues.
Term
Myelography
Definition
X-ray image of the spinal cord after injection of contrast into the membranes surrounding the spinal cord.
Term
Nuclear medicine
Definition
Medical specialty that studies the uses of radioactive substances (radionuclides and radiopharmaceuticals) in the diagnosis of disease.
Term
Oblique
Definition
Positioned at an angle; an x-ray view.
Term
Positron emission
Definition
Radionuclides given intravenously emit positrons, which tomography (PET) create a cross-sectional image of cellular metabolism in specialized areas of the body.
Term
Posteroanterior
Definition
In this position, x-ray beams pass from the back to the front of the body.
Term
Prone
Definition
Lying on the belly (face down).
Term
Pyelogram
Definition
X-ray record of the kidneys (renal pelvis) and urinary tract after contrast is injected (intravenously or retrograde).
Term
Radiographer
Definition
Aids physicians in administering diagnostic x-ray procedures.
Term
Radioimmunoassay
Definition
Test combines radioactive chemicals and antibodies to detect minute quantities of substances in a patient’s blood
Term
Radiolabeled compound
Definition
Combination of a radioactive substance (radionuclide) and a drug; used in nuclear medicine studies.
Term
Radiology
Definition
Medical specialty concerned with the use of x-rays for the diagnosis and treatment of disease.
Term
Radiolucent
Definition
Permitting the passage of x-rays
Term
Radionuclide
Definition
Radioactive form of an element; gives off energy in the form of radiation; radioisotope.
Term
Radiopaque
Definition
Obstructing the passage of x-rays
Term
Radiopharmaceutical
Definition
Radioactive drug (radionuclide plus a drug) that is administered safely for diagnostic and therapeutic purposes.
Term
Recumbent
Definition
Lying down (prone or supine).
Term
Scan
Definition
Image of an area, organ, or tissue of the body obtained from ultrasound, radioactive tracer studies, or computed tomography.
Term
Single photon emission computed tomography
Definition
Radioactive tracer is injected intravenously, and a computer reconstructs a three-dimensional image based on a composite of many views.
Term
Sonogram
Definition
Image of sound waves as they bounce off organs in the body; echogram or ultrasound image.
Term
Supine
Definition
Lying on one’s back.
Term
Tagging
Definition
Attaching a radionuclide to a chemical allowing its path in the body.
Term
Thallium scan
Definition
Thallium 201 is injected intravenously to allow for myocardial perfusion and assess damage to heart muscle from heart attacks.
Term
Technetium Tc-99m sestamibi scan
Definition
A nuclear medicine study in which a radiopharmaceutical (Tc 99m sestamibi) is injected intravenously and traced to heart muscle to observe heart function.
Term
Therapeutic
Definition
Pertaining to treatment or therapy.
Term
Thyroid scan
Definition
An iodine 131 radionuclide is administered intravenously, and an image of the size and shape of the thyroid gland is obtained by scanning.
Term
Tomography
Definition
Process of taking a series of images to show an organ in layers or depth.
Term
Tracer studies
Definition
Radionuclides are attached to chemicals, used as tags or markers, and followed as they travel through the body.
Term
Transducer
Definition
Handheld device that sends and receives ultrasound signals.
Term
Ultrasonography
Definition
Diagnostic technique that projects and retrieves high-frequency sound waves as they bounce (echo) off parts of the body.
Term
Uptake
Definition
Rate of absorption of a radionuclide into an organ or tissue.
Term
Urography
Definition
Process of taking x-ray images of the urinary tract after injecting contrast.
Term
Ventilation-perfusion studies
Definition
Radiopharmaceutical is inhaled (ventilation study) and injected intravenously (perfusion study) followed by imaging its passage through the respiratory tract.
Term
The types of radioactivity
Definition
Alpha particles; beta particles; gamma rays
Term
Extension
Definition
Lengthening or straightening of flexed limbs
Term
Abduction
Definition
Movement away from the midline of the body
Term
Adduction
Definition
Movement toward the midline of the body
Term
Eversion
Definition
Turning outward
Term
Flexion
Definition
Bending a part of the body
Term
Inversion
Definition
Turning inward
Term
Lateral decubitus
Definition
Lying down on one side (with the x Ray beam horizontally positioned)
Term
Prone
Definition
Lying on the belly (face down)
Term
Recumbent
Definition
Lying down (may be prone or supine)
Term
Supine
Definition
Lying on the back (face up)
Term
Pharmaceut/o
Definition
Drug
Term
Angiography
Definition
X-ray image (angiogram) of blood vessels and heart Chambers is obtained after contrast is injected through a catheter into the appropriate blood vessel or heart Chamber
Term
Ct is better to view bony structures and solid masses of chest and abdomen
Definition
Bony structures---- chest lesions---- bleeding in the brain from head trauma and ruptured arteries
Term
Mri is better at giving detail in soft tissue that have more water molecules
Definition
Spinal cord--- joints, tendons, and ligaments--- liver masses, and head and neck lesions
Term
Magnetic resonance imaging
Definition
Uses electromagnetic energy rather than x-rays-- often use gadolinium *gd* as contrast material. Can be performed with and without contrast material though. Can't be used by patients with pacemakers and metallic implants- powerful magnet can alter position and function of these devices
Term
Which diagnostic techniques use x-rays?
Definition
Contrast studies. Ct scans computed tomography. Fluoroscopy. Conventional x-Ray studies
Term
Which diagnostic techniques use ultrasound
Definition
Ultrasonography
Term
Which diagnostic techniques use magnetic and radio waves
Definition
Magnetic resonance imaging (mri)
Term
X-ray positioning
Definition
Posteroanterior (pa) view
Anteroposterior (ap) view
Lateral view
Oblique view
Term
X-Ray positioning posteroanterior
Definition
From back through body towards x-Ray plate- in this most commonly requested chest x-ray view, x-rays travel from posteriorly placed source to an anteriorly placed detector.
Term
X-Ray positioning anteroposterior view
Definition
X-rays travel from front to back where plate is placed- x-rays travel from an anteriorly placed source to a posteriorly placed detector
Term
X-Ray positioning lateral view
Definition
From one side to the other-- rays travel from a source
Term
X-ray positioning oblique view
Definition
X-Rays travel in a slanting direction at an angle from the people perpendicular plane. Oblique views show regions or structures ordinarily hidden and super imposed in routine pa and ap views
Term
In vitro
Definition
Involves analysis of blood and urine samples using radioactive chemicals. means"in the tube", radioimmunoessay is example.
Term
Radioimmunoassay (ria)
Definition
In vitro procedure that combines the use of radioactive chemicals and antibodies to detect hormones and drugs in a patients blood. Used for detection of minute amounts of digitalis (a drug used to treat heart disease) and also detect hyperthyroidism in a newborn infant
Term
In vivo test examples
Definition
Tracer studies: bone scan, lung scan (ventilation, perfusion), lymphoscintography, positron emission tomography (pet), radioactive iodine uptake (raiu), single photon emission computed tomography (spect), 99m technetium-sestamibi scan, 201 thallium scan, thyroid scan
Term
Half Life
Definition
Time required for a radioactive substance (radionuclide) top lose half off its by radioactivity disintegration. Important to determine how long radioactive substance will emit radioactivity when in the body
Term
Radionuclide (radioisotope)
Definition
These emit three types of radioactivity: alpha particles; beta particles, and gamma rays--- substance that gives off high-energy particles or rays as it disintegrates. Produced in either nuclear reactor or charged-particle accelerater (cyclotron) or by irradiading stable substances causing disruption and instability.
Term
Technetium-99m (99mtc)
Definition
Is essentially a pure gamma emitter with half Life of 6 hours. Most used radionuclide in diagnostic imaging.
Term
In vivo tests
Definition
radioactive chemicals Given to the patient directly intravenous, in gaseous form, etc, for qexample tracer study, using a gamma Camera to find out where the radioactive chemical went and in what potencyif it's there. The combination of radionuclide and a drug or chemical is called radiopharmaceutical or radioactive compound
Term
Radioactive compound or radiopharmaceutical
Definition
Combination of radionuclide and a drug is chemical
Term
Uptake
Definition
This refers to the rate of absorption of the radiopharmaceutical intro an organ or tissue
Term
Radionuclide scanning
Definition
Procedure of making an image by tracking the distribution of radioactive substance in the body
Term
Tracer study
Definition
Specific radionuclide is incorporated into a chemical substance and administrated to thre pt
Term
Radioactivity- definition
Definition
Spontaneous emission of energy in the form of particles and rays coming from the interior of a substance
Term
Bone scan
Definition
99mtc (technetium) used to label phosphate substances then given intravenously
Term
angio
Definition
angiography
Term
ap
Definition
anteroposterior
Term
ba
Definition
barium
Term
be
Definition
barium enema
Term
c-spine
Definition
cervical spine films
Term
ct
Definition
computed tomography
Term
CXR
Definition
CHEST X-RAY (FILM)
Term
DECUB
Definition
DECUBITUS - LYING DOWN
Term
DICOM
Definition
DIGITIAL IMAGE COMMUNICATION IN MEDICINE - STD PROTOCOL FOR TRANSMISSION BETWEEN IMAGING DEVICES (E.G. CT SCANS AND PACS WORKSTATIONS)
Term
DI
Definition
DIAGNOSTIC IMAGING
Term
DSA
Definition
DIGITIAL SUBTRATION ANGIOGRAPHY
Term
ECHO
Definition
ECHOCARDIOGRAM
Term
EUS
Definition
ENDOSCOPIC ULTRASONOGRAPHY
Term
123I
Definition
ISOTOPE OF RADIOACTIVE IODINE - USED IN THYROID SCANS
Term
131I
Definition
ISOTOPE OF RADIOACTIVE IODINE - USED IN DIAGNOSIS (THRYOID SCAN) AND TREATMENT OF THRYOID CANCER
Term
IVP
Definition
INTRAVENOUS PYELOGRAM
Term
KUB
Definition
KIDNEY'S URETERS BLADDER (SERIES) -X-RAY IMAGING OF THESE ORGANS WITHOUT CONTRAST MEDIUM
Term
LAT
Definition
LATERAL
Term
LS FILM
Definition
LUMBOSACRAL (SPINE) FILMS
Term
L-=SPINE
Definition
LUMBAR SPINE
Term
MR, MRI
Definition
MAGENTIC RESONANCE, MAGNETIC RESONANCE IMAGING
Term
MRA
Definition
MAGNETIC RESONANCE ANGIOGRAPHY
Term
MRV
Definition
MAGNETIC RESONANCE VENOGRAPHY
Term
MUGA
Definition
MULTIPLE-GATED ACQUISITIONS (SCAN) - RADIOACTIVE TEST TO SHOW HEART FUNCTION
Term
PA
Definition
POSTEROANTERIOR
Term
PACS
Definition
PICTURE ARCHIVAL AND COMMUNICATIONS SYSTEM - REPLACEMENT OF TRADITIONAL FILMS WITH DIGITAL EQUIVILANTS THAT CAN BE ACCESSED FROM SEVERAL PLACES AND RETRIEVED MORE RAPIDLY
Term
PET
Definition
POSITRON EMISSION TOMOGRAPHY
Term
PET/CT
Definition
POSITRON EMISSION TOMOGRAPHY/ COMPUTED TOMOGRAPHY - BOTH STUDIES ARE PERFORMED USING A SINGLE MACHINE
Term
RAIU
Definition
RADIOACTIVE IODINE UPTAKE TEST- EVALUATES THE FUNCTION OF THE THYROID GLAND
Term
RFA
Definition
RADIOFREQUENCY ABLATION
Term
SBFT
Definition
SMALL BOWEL FOLLOW-THROUGH
Term
SPECT
Definition
SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY - RADIOACTIVE SUBSTANCES AND A COMPUTER ARE USED TO CREATE 3D IMAGES
Term
99MTC
Definition
RADIOACTIVE TECHNETIUM - USED IN HEART, BRAIN, THYROID, LIVER, BONE, AND LUNG SCANS
Term
201TL
Definition
THALLIUM-201- RADIOISOTOPE USED IN SCANNING HEART MUSCLE
Term
T-SPINE
Definition
THORACIC SPINE
Term
UGI
Definition
UPPER GASTROINTESTINAL (SERIES)
Term
US, U/S
Definition
ULTRASOUND; ULTRASONOGRAPHY
Term
V/Q SCAN
Definition
VENTILATION-PERFUSION SCAN OF THE LUNGS (Q STANDS FOR RATE OF BLOOD FLOW OR BLOOD VOLUME)
Term
IS/O
Definition
SAME
Term
PHARMACEUT/O
Definition
DRUG
Term
RADI/O
Definition
X-RAYS
Term
SON/O
Definition
SOUND
Term
THERAPEUT/O
Definition
TREATMENT
Term
VITR/O
Definition
GLASS
Term
VIV/O
Definition
LIFE
Term
-GRAM
Definition
RECORD
Term
-GRAPHY
Definition
PROCESS OF RECORDING
Term
-LUCENT
Definition
TO SHINE
Term
-OPAQUE
Definition
OBSCURE
Term
ECHO-
Definition
A REPEATED SOUND
Term
ULTRA-
Definition
BEYOND
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