Radiographic Physics II & Fluoroscopy Exam 1

A comparision of radiation doses which cause particular biological damage with or without oxygenation.

Capabilities of radiation with differing LETs to produce a biologic reaction is Relative Biologic Effectiveness

The optimal C-arm position for dose reduction is:

HIPAA allow for sharing pt information among healthcare workers with direct responsibility for that pt.

The belief that cell death only occurs if the DNA is inactivated by radiation exposure is Target Theory

Magnification mode reduces patient dose.

Which letter is the Amplitude?

The reduction in the number of x-ray photons in the beam, and subsequent loss of energy, as the beam passes thru matter

Each time an x-ray photon scatters, its intensity at 1m is what fraction of its original intensity?

Filtration removes:

Which is NOT a HIGH-LET radiation?

Proper cell function enables the body to maintain homeostasis.

The protective control booth from which the radiographer makes the x-ray exposure is a secondary barrier.

A violation of the ARRT Rule of Ethics is performing a function outside of your scope of practice.

The 4 phases of mitosis cell dividsion in order are Prophase, Metaphase, Anaphase, Telophase

Wavelengths and energy are inversely related.

The 4 stages of Acute Radiation Syndrome in order:

Viscosity defines the

The input phosphor is made of

The height of a primary wall must be at least 7 feet.

Bremsstrahlung x-rays are caused by incident photons slowing down and changing direction near an atom's nucleus.

A disadvantage of filtration is reduced image contrast.

Effective and Equivalent Doses both have the SI unit of Sievert.

A focusing cup is positively charged.

Organic compounds must have

Average energy deposited per unit length of track by radiation as it passes through and interacts with tissue is termed:

A pt w/ho of renal insufficiency arrives for a contrast exam:

It is NOT necessary to have a signed consent for any contrast exam.

Which is a mild contrast reaction?

Urticaria means cardiac arrest.

Human cells can:

Osmolality (L not R) means the number of particles in a solution per kilogram of water.

When an x-ray photon interacts with an inner shell electron

The central ray is a form of secondary radiation?

Which is a Fundamental Property of X-rays?

Absorbed Dose and Air Kerma both have the SI unit of Gray.

A radiologist or Medical Doctor must be in the facility when doing a contrast exam.

"A" is the trough.

Compared to visible light, x-ray frequency is:

What percent of increase in kVp is equivalent to doubling the mAs?

mRNA is a messenger prototype of tRNA.

The whole-body dose of radiation that can cause death to 50% of the exposed population in 30 days is called the:

The Z number for Tungsten is:

Apoptosis is the ionization of water molecules within a cell causing free radicles which produce hydrogen peroxide.

Who was the first fatality of X-ray?

Indirect action occurs when DNA is hit with radiation.