I Flashcards
ARE DIAGNOSTIC AGENTS THAT ARE INSTILLED INTO BODY ORIFICE OR
INJECTED INTO THE VASCULAR SYSTEM, JOINTS AND DUCTS TO ENHANCE
SUBJECT CONTRAST IN ANATOMIC AREAS WHERE THERE IS LOW SUBJECT
CONTRAST.
Contrast Media
• A MATERIAL THAT IS BEING INGESTED OR INJECTED INTO THE BODY FOR
VISUALIZATION OF THE ORGAN.
Contrast Media
• SUBSTANCE HAVING EITHER A HIGHER OR LOWER ATOMIC NUMBER THAN THE
SURROUNDING TISSUES WHICH ARE USED TO REPRESENT ORGANS OF THE BODY WHICH ARE NOT VISUALIZED IN A PLAIN RADIOGRAPHY.
Contrast Media
• SERVES AS A DIAGNOSTIC AND THERAPEUTIC AID TO PHYSICIAN TO VISUALIZE CERTAIN TISSUES/ ORGAN.
Contrast Media
Types of Contrast Media
Radiopaque and Radiolucent
APPEARS WHITE (DECREASED DENSITY) ON THE RADIOGRAPH
(EX. BARIUM SULFATE, IODINE).
RADIOPAQUE
ALSO KNOWN AS POSITIVE CONTRAST MEDIA.
Radiopaque
COMPOSED OF ELEMENTS WITH HIGH ATOMIC NUMBER.
Radiopaque
APPEARS BLACK (INCREASED DENSITY) ON THE RADIOGRAPH
(AIR, NITROGEN, CARBON DIOXIDE).
RADIOLUCENT
ALSO KNOWN AS NEGATIVE CONTRAST MEDIA.
Radiolucent
COMPOSED OF ELEMENTS WITH LOW ATOMIC NUMBER.
Radiolucent
Four Physical States of Contrast Media
Oil
Tablets
Powder
Liquid
EXAMPLE: PANTOPAQUE, DIONOSIL
- USED IN MYELOGRAM AND BRONCHOGRAM STUDIES
Oil
USED IN GALL BLADDER STUDIES
Tablets
- USED IN GASTRO INTESTINAL TRACT
ESOPHOGRAM, BARIUM ENEMA, AND SMALL INTESTINAL STUDIES.
Powder
- EXAMPLE ALL IODINATED AND NON-IONIC CONTRAST MEDIUM.
LIQUID
- FOR EXAMINATION OF THE ESOPHAGUS
- FOR SMALL INTESTINE
- FOR UPPER GI SERIES
BASO4 (BARIUM SULFATE)
- ARE USED IN THE EXAMINATIONS OF THE GI, KIDNEYS, GALLBLADDER,
PANCREAS, HEART, BRAIN, UTERUS, SPINAL COLUMN, ARTERIES, VEINS AND
JOINTS.
IODINATED FORM
- ATOMIC NUMBER OF 53.
Iodinated Form
is the property of two substances to mix in all proportions forming a homogeneous mixture.
Miscibility
- A MEASURE OF THE AMOUNT OF CHEMICAL SUBSTANCE THAT
CAN DISSOLVE IN WATER AT A SPECIFIC TEMPERATURE.
WATER SOLUBILITY
IN VASCULAR APPLICATIONS AN IMMEDIATE DILUTION WITH BLOOD.
Water Solubility
- A MEASURE OF A FLUID’S RESISTANCE TO FLOW.
VISCOSITY
IS A MEASURE OF THE FLUIDITY OF SOLUTIONS
Viscosity
Viscosity is measured in _____ per second
millipascals (mPA)
- THE CONCENTRATION OF PARTICLES DISSOLVED IN A FLUID.
OSMOLALITY