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LXMO CORE Exam Questions (Answered) 83 Questions and Correct Answers, 100% Correct. 2024/2025. $10.49   Add to cart

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LXMO CORE Exam Questions (Answered) 83 Questions and Correct Answers, 100% Correct. 2024/2025.

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LXMO CORE Exam Questions (Answered) 83 Questions and Correct Answers, 100% Correct. 2024/2025.

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  • August 15, 2024
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LXMO CORE Exam Questions (Answered) 83
Questions and Correct Answers, 100% Correct.
2024/2025.
Focusing Cup

Directs electrons toward target

Thermionic Emission

Filament electrons are boiled off producing an electron cloud

Bremsstrahlung

AKA Breaking Radiation. Occurs when a high speed electron from the cathode is deflected by the nucleus
of a target atom

Characteristic Radiation

Occurs when cathode electrons dislodge inner orbit electrons from the target atoms.

Anode Heel Affect

Reduction of beam intensity due to interaction with heel of target

Quality

Refers to penetrating power of the beam

Quantity

Refers to the number of xray photons in the useful beam

Primary Beam

Beam exiting the tube before it gets to the patient

Remnant Radiation

Photons that are exiting patient before getting to the IR

Inverse Square Law

Intensity is inversely proportional to the square of the distance

Attenuation

Absorption of the beam by the patient

Compton Effect

Incident xray interacts with outer shell electron and ionizes the atom

, Compton Effect

What is the single most contribution to occupational exposure?

Photoelectric Absorption

Incident xray is totally absorbed during the exposure, K shell electron is ejected.

Coherent Scatter

Incident xray interacts with target atom, atom becomes excited and releases energy in the same
wavelength as original but in a different direction

Deterministic

A high dose of radiation renders an early response

Stochastic

A low dose of radiation renders a late response

Linear

Radiation dose is directly proportional to the response

Non-Linear

Varied responses from varied doses

Non-Threshold

Any dose produces a response

Threshold

Response happens only above a certain radiation level

Direct Effect

If radiation ionization occurs on the target DNA then it is considered this

Indirect Effect

If radiation ionization occurs on a distant noncritical molecule which then transfers its energy to the
target molecule it is considered this

Law of Bergonie and Tribondeau

Radiosensitivity is a function of the metabolic state of the tissue being irradiated

Linear Energy Transfer

Rate at which energy is transferred from the ionizing radiation to soft tissue

Oxygen Effect

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