47 Questions
What is the purpose of contrast media in radiographic imaging?
To improve visualization of anatomic details
What is a common adverse reaction associated with air used as a negative contrast medium?
Embolism
Which type of contrast media attenuates X-rays less than the body soft tissues?
Negative contrast media
What physical property makes oil-based iodine-based contrast agents relatively viscous?
Insolubility in water
What characterizes water-soluble iodine-based contrast agents with a negative charge (anion)?
Three iodine atoms and an acid group
Which type of iodine-based contrast agents contains one tri-iodinated benzene ring?
Water-soluble nonionic contrast agents
In which specific procedure is air primarily used to provide negative contrast for radiographic imaging?
Laryngopharyngography
Which type of positive contrast media attenuates X-rays more than the body soft tissues?
Iodine Barium MR contrast agents
What is the main purpose of negative contrast media in radiographic imaging?
To provide visual contrast by appearing dark on radiographs
What tends to alter the absorption characteristic of the anatomic region when using contrast media?
The presence of barium or iodine in the body
What is a rare adverse reaction associated with water-soluble iodine-based contrast agents?
Temporary lymphedema
Which category of contrast media provides negative contrast for laryngopharyngography?
Negative contrast media
Which adverse reaction is associated with water-soluble iodine-based contrast agents?
Provoking anaphylactoid reaction
What physical property makes oil-based iodine-based contrast agents insoluble in water?
Insoluble in water relatively
In which specific procedure would barium be used as a positive contrast agent?
Myelography
What type of contrast media attenuates X-rays more than the body soft tissues?
Positive contrast media
What characterizes water-soluble iodine-based contrast agents with a negative charge (anion)?
Contain two tri-iodinated benzene rings
What type of iodine-based contrast agents are relatively viscous and do not flow easily?
Oil-based iodine-based contrast agents
What does positive contrast media provide for radiographic imaging?
Enhancing the density differences within the area of interest.
Which type of iodine-based contrast agents contains one tri-iodinated benzene ring?
Water-soluble iodine-based contrast agents (nonionic).
What factor tends to alter the absorption characteristic of the anatomic region when using contrast media?
Cells absorbing oxygen quickly.
Which type of contrast media attenuates X-rays less than the body soft tissues?
Negative contrast media (Radiolucent)
What characterizes water-soluble iodine-based contrast agents with a negative charge (anion)?
The anion portion begins with a carbon bonded hexagon – benzene
What is a potential adverse reaction associated with air used as a negative contrast medium?
Embolism
In which specific procedure would barium be used as a positive contrast agent?
Myelography
What factor tends to alter the absorption characteristic of the anatomic region when using contrast media?
Instilling contrast media
What physical property makes oil-based iodine-based contrast agents relatively viscous?
Insoluble in water
What is the main purpose of negative contrast media in radiographic imaging?
To visualize anatomic details
Which specific procedure primarily uses air to provide negative contrast for radiographic imaging?
Laryngopharyngography
Which type of iodine-based contrast agents are relatively viscous and do not flow easily?
Oil-based iodine-based contrast agents
What does positive contrast media provide for radiographic imaging?
Outlines lumen or spaces within body structures
What is the main purpose of contrast media in radiographic imaging?
To affect the structure or function of the body
What tends to alter the absorption characteristic of the anatomic region when using contrast media?
Circadian rhythm
Which category of contrast media provides negative contrast for laryngopharyngography?
Air-based contrast media
What characterizes water-soluble iodine-based contrast agents with a negative charge (anion)?
They are insoluble in water
What is a potential adverse reaction associated with air used as a negative contrast medium?
Allergic reaction
Which type of iodine-based contrast agents contains one tri-iodinated benzene ring?
Oil-based iodine-based agents
What term refers to the strength or power of a drug required to achieve the desired effect?
Potency
What is the term for the amount of a drug that becomes available for activity in the targeted tissue?
Bioavailability
Which drug property is determined by the number and severity of adverse effects reported after use of the drug?
Safety and toxicity
What does hormesis refer to in relation to drugs?
Benefit at one dose and harm at another
Which classification of drugs is specific to a company brand?
Brand names
In drug nomenclature, what does the chemical name identify with?
The chemical structure of the drug
What physical property makes oil-based iodine-based contrast agents insoluble in water?
Viscosity
What is a potential adverse reaction associated with air used as a negative contrast medium?
Allergic reaction and anaphylaxis
Which category of drugs is legally authorized by a health practitioner?
Prescription drugs
What term refers to the type of preparation or how a drug is transported into the human body?
Dosage forms
Explore the impact of ethanol (alcohol) and caffeine on alertness, sleepiness, blood pressure, heart rate, cardiac output, and vasoconstriction/vasodilation. Understand how these substances affect individuals differently based on factors like time of day and sleep deficits.
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