Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

Optimisation of dose per image in digital imaging.

¹Regional Medical Physics Department, Newcastle General Hospital, Westgate Road, Newcastle upon Tyne, NE4 6BE, UK. n.w.marshall@ncl.ac.uk

Radiation Protection Dosimetry

|August 8, 2001

Summary

Digital radiography image quality depends on X-ray dose. Quantum noise limits low-dose images, while system noise affects high-dose digital radiography images, impacting contrast resolution.

Related Concept Videos

You might also read

Related Articles

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

Sort by

Same author

Task-based detectability in anatomical background in digital mammography, digital breast tomosynthesis and synthetic mammography.

Physics in medicine and biology·2024

Same author

Investigation of test methods for QC in dual-energy based contrast-enhanced digital mammography systems: II. Artefacts/uniformity, exposure time and phantom-based dosimetry.

Physics in medicine and biology·2023

Same author

Investigation of test methods for QC in dual-energy based contrast-enhanced digital mammography systems: I. Iodine signal testing.

Physics in medicine and biology·2023

Same author

Seven general radiography x-ray detectors with pixel sizes ranging from 175 to 76<i>μ</i>m: technical evaluation with the focus on orthopaedic imaging.

Physics in medicine and biology·2023

Same author

Performance evaluation of digital breast tomosynthesis systems: comparison of current virtual clinical trial methods.

Physics in medicine and biology·2022

Same author

Performance evaluation of digital breast tomosynthesis systems: physical methods and experimental data.

Physics in medicine and biology·2022

Area of Science:

Medical Imaging
Radiography
Physics

Background:

Digital radiography (DR) encompasses various modalities, including digital fluorography, storage phosphor radiography, and amorphous selenium radiography.
The X-ray dose utilized in these DR modalities can be significantly adjusted.
Understanding the impact of dose variation on image quality is crucial for optimizing diagnostic performance.

Purpose of the Study:

To investigate the effects of varying X-ray dose per image on contrast resolution in digital radiography.
To identify the primary noise sources limiting image quality at different dose levels.

Main Methods:

Utilized threshold contrast detail (TCD) techniques to assess image receptor performance.
Examined three digital radiography modalities: digital fluorography, storage phosphor radiography, and amorphous selenium radiography.
Systematically varied the X-ray dose per image delivered to the image receptor.

Main Results:

At low X-ray doses, contrast resolution is primarily limited by quantum noise, inherent to the random nature of X-ray detection.
At high X-ray doses, system noise, originating from electronic components and other non-quantum sources, becomes the limiting factor for contrast resolution.
Both quantum and system noise contribute to the degradation of contrast resolution as dose deviates from optimal levels.

Conclusions:

The relationship between X-ray dose and contrast resolution in digital radiography is complex, influenced by different noise sources.
Optimizing X-ray dose is essential to mitigate the effects of quantum noise at low doses and system noise at high doses.
Further research into noise reduction techniques is warranted for improving image quality across all digital radiography modalities.

Related Experiment Videos