Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Dose Size and Dosing Frequency: Determination Methods01:21

Dose Size and Dosing Frequency: Determination Methods

Determining the optimal dose size and dosing frequency in pharmacotherapy is crucial for achieving therapeutic effectiveness while minimizing adverse effects. This article explores the methodologies employed in determining these parameters, focusing on their significance and interplay to tailor dosing regimens.Dose Size: Dose size refers to the amount of a drug administered in a single dose. It is determined based on the drug's pharmacodynamics and pharmacokinetics properties and...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Biokinetic modelling of the exhalation of <sup>219</sup>Rn gas and its airborne progeny from patients undergoing treatment with <sup>223</sup>Ra-dichloride and effective dose estimation for caregivers.

Radiation and environmental biophysics·2026
Same author

Dose optimization for pediatric chest CT: a comparative study of energy-integrating and photon-counting detector CT using 70 kV and 100 kV protocols with tin filtration regarding image quality and dose exposure.

European journal of radiology·2026
Same author

Reference Levels for Diagnostic and Interventional X-ray Exposures in Germany: Development, Handling, and Perspective.

RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin·2026
Same author

European radiation protection week 2025-meeting summary.

Journal of radiological protection : official journal of the Society for Radiological Protection·2026
Same author

Ultra-low dose protocol on photon-counting computed tomography as an alternative to radiographic shunt series in the diagnosis of mechanical ventriculoperitoneal shunt complications - an ex vivo phantom study for children and adults.

Neuroradiology·2026
Same author

Dose coefficients to the fetus and offspring from intakes of radionuclides by the mother.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2025
Same journal

Evaluation of PET/CT Artificial Intelligence Image Reconstructions VS Harmonized Clinical Reconstruction.

Zeitschrift fur medizinische Physik·2026
Same journal

Adaptation of quality control pipeline for Skeletal Muscle 31P MR Spectroscopy at 3T and 7T.

Zeitschrift fur medizinische Physik·2026
Same journal

Complexity metrics for Tomotherapy: application to the verification of transferred plans.

Zeitschrift fur medizinische Physik·2026
Same journal

A probabilistic framework for risk-bounded patient-specific quality assurance in volumetric modulated arc therapy based on measured and calculated gamma pass rates.

Zeitschrift fur medizinische Physik·2026
Same journal

Applications of artificial intelligence in nuclear medicine.

Zeitschrift fur medizinische Physik·2026
Same journal

Apparent tissue sodium concentration quantification across reconstruction methods with different partial volume effect reduction - A preliminary study.

Zeitschrift fur medizinische Physik·2026
See all related articles
  1. Home
  3. Evaluation Of Ct Dose-averaged Detectability: A Repeatability Study.
  1. Home
  3. Evaluation Of Ct Dose-averaged Detectability: A Repeatability Study.

Related Experiment Video

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement
06:33

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement

Published on: July 29, 2013

Evaluation of CT dose-averaged detectability: a repeatability study.

Maximilian Göppel1, Patrizia Kunert1, Hugo de Las Heras Gala2

  • 1Department of Medical and Occupational Radiation Protection, Federal Office for Radiation Protection, Oberschleissheim, Germany.

Zeitschrift Fur Medizinische Physik
|May 22, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

Accurate computed tomography (CT) image quality is vital for diagnosis. This study found significant variations between phantom specimens, highlighting the need for experimental verification of contrast values to ensure reliable detectability metrics.

Keywords:
CHOimage qualitylow-contrast detectabilityphantom

More Related Videos

Expedited Radiation Biodosimetry by Automated Dicentric Chromosome Identification (ADCI) and Dose Estimation
10:33

Expedited Radiation Biodosimetry by Automated Dicentric Chromosome Identification (ADCI) and Dose Estimation

Published on: September 4, 2017

Related Experiment Videos

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement
06:33

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement

Published on: July 29, 2013

Expedited Radiation Biodosimetry by Automated Dicentric Chromosome Identification (ADCI) and Dose Estimation
10:33

Expedited Radiation Biodosimetry by Automated Dicentric Chromosome Identification (ADCI) and Dose Estimation

Published on: September 4, 2017

Area of Science:

  • Medical Imaging
  • Radiology
  • Image Quality Assessment

Background:

  • Diagnostic radiology requires high image quality for accurate diagnosis and patient safety, adhering to the ALARA principle.
  • Detecting subtle low-contrast differences is crucial for early disease detection, such as liver metastases.
  • Iterative reconstruction algorithms in CT improve image quality but challenge traditional assessment metrics due to their non-linear nature.

Purpose of the Study:

  • To evaluate the dose-averaged detectability in computed tomography (CT) systems using a previously proposed method.
  • To minimize systematic errors arising from measurement processes and phantom specimen variations.
  • To assess the impact of specimen variability on the accuracy of image quality metrics.

Main Methods:

  • Employed a method for determining dose-averaged detectability in CT systems.
  • Conducted intra-specimen repeatability analyses (same scanner and phantom).
  • Performed inter-specimen repeatability analyses (different specimens of the same phantom type) using a GE Brightspeed 16 scanner.

    • Main Results:

    • Significant variations in detectability were observed among different phantom specimens.
    • Intra-specimen analyses showed consistency, while inter-specimen analyses revealed variability.
    • The study identified the necessity of corrections for specimen variations to enable consistent comparisons.

    Conclusions:

    • Experimental verification of actual contrast values is crucial for accurate determination of the figure of merit (FOM) when using multiple phantom specimens.
    • Phantom specimen variability can introduce systematic errors in image quality assessments.
    • Model observers, like the Channelized Hotelling Observer, are suitable for evaluating non-linear systems like those using iterative reconstruction.