Variation in output with a fixed dose setting on a 4-MV linear accelerator

Related Experiment Video

Updated: Aug 9, 2026

Characterization of Recombination Effects in a Liquid Ionization Chamber Used for the Dosimetry of a Radiosurgical Accelerator
07:31

Characterization of Recombination Effects in a Liquid Ionization Chamber Used for the Dosimetry of a Radiosurgical Accelerator

Published on: May 10, 2014

M Gillin, R Quillin

    Medical Physics
    |March 1, 1976
    PubMed

    More Related Videos

    Use of a Linear Accelerator for Conducting In Vitro Radiobiology Experiments06:08

    Use of a Linear Accelerator for Conducting In Vitro Radiobiology Experiments

    Published on: May 26, 2019

    Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities06:51

    Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

    Published on: February 20, 2021

    Related Concept Videos

    Rational Dosage Regimen: Maintenance Dose and Loading Dose01:24

    Rational Dosage Regimen: Maintenance Dose and Loading Dose

    A rational dosage regimen considers a drug's pharmacokinetics, including its absorption, distribution, metabolism, and elimination from the body. By understanding these factors, the appropriate dosage can be determined, and the dosing schedule can be designed to achieve and maintain the desired therapeutic effect while minimizing adverse effects.
    In most cases, drugs are administered repetitively or infused continuously to maintain a steady-state concentration in the body. At a steady state,...
    Dosage Regimen: Fixed Dose01:01

    Dosage Regimen: Fixed Dose

    Fixed-dose regimens are a common approach to administer drugs to achieve and maintain desired levels of the drug in the body. In this dosing strategy, a specific amount of medication is given at regular intervals, often multiple times a day, to ensure a consistent drug concentration in the bloodstream.
    Fixed-dose regimens can be used for various routes of administration, including intravenous (IV) injections and oral medications. For IV administration, a predetermined amount of the drug is...
    Dosage Regimen: Multiple Oral Dosage01:25

    Dosage Regimen: Multiple Oral Dosage

    Understanding how a drug's concentration fluctuates within the body over time is crucial in pharmacokinetics, particularly with multiple oral doses. A graphical representation of multiple oral dosages provides insight into these dynamics. Typical accumulation curves of a drug's concentration in the body reveal a sawtooth pattern, indicating periodic peaks and troughs correlating with each dose administration and the drug's subsequent elimination.The plasma concentration at any time during an...
    Dosage Regimen: Individualization01:24

    Dosage Regimen: Individualization

    Individualization in dosing regimens is the customization of medication doses for individual patients. Its necessity arises from the goal of maximizing therapeutic benefits while minimizing risks. This approach is pivotal because human responses to drugs can vary widely; what is effective for one person may be inadequate or excessive for another. Interpatient (intersubject) variability refers to differences in drug responses between individuals, while intrapatient (intrasubject) variability...
    Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations01:15

    Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations

    Gentamicin, an aminoglycoside antibiotic, is commonly administered via intermittent intravenous infusion to treat severe infections. An intermittent one-hour infusion of gentamicin, administered at eight-hour intervals, allows for precise control of plasma drug concentrations, minimizing toxicity while ensuring therapeutic efficacy. Pharmacokinetic principles govern the dynamics of plasma concentrations and can be mathematically described using specific equations.The plasma drug concentration...
    Determination of Multiple Dosing Parameters: Loading and Maintenance Doses01:25

    Determination of Multiple Dosing Parameters: Loading and Maintenance Doses

    A loading dose is an essential pharmacological strategy to rapidly achieve the target plasma drug concentration necessary for an immediate therapeutic effect. This approach is especially critical for drugs characterized by slow absorption or extended half-lives, where delaying therapeutic plasma levels could compromise treatment outcomes. By administering a loading dose, clinicians ensure a prompt onset of drug action, even for agents with complex pharmacokinetic profiles.Achieving steady-state...