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

Related Concept Videos

Computed Tomography

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...

You might also read

Related Articles

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

Sort by

Same author

The radiographic bubbly fecal pattern of intestinal pneumatosis in newborns revisited.

Pediatric radiology·2026

Same author

Radiomics-informed CT protocol optimization through feature-level trade-off analysis in a phantom study.

Physics in medicine and biology·2026

Same author

Imaging Pitfalls in Surface Bone Lesions: Florid Reactive Periostitis Mimicking Parosteal Osteosarcoma - A Multimodality Case Series.

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

Same author

The impact of increasing femoral width on anatomic risk factors for patellar instability in paediatric patients: a retrospective MRI case-control study.

BMC musculoskeletal disorders·2026

Same author

[Does endoprosthetic treatment of medial femoral neck fractures in obese patients using a minimally invasive anterolateral approach have a higher complication rate? : A retrospective case-control study].

Orthopadie (Heidelberg, Germany)·2026

Same author

Knowledge preservation in the era of big science and AI: strategies for sustainable scientific research.

Nature communications·2026

Same journal

Cumulative radiation exposure from repeated CT imaging in hospitalised COVID-19 patients: Does it matter?

European journal of radiology open·2026

Same journal

Prostate cancer: Value of the PI-FAB score and volume-adjusted PSA density in recurrence assessment after HIFU.

European journal of radiology open·2026

Same journal

Performance of magnetic-resonance imaging radiomics in prediction of response after neoadjuvant chemotherapy in head and neck squamous cell carcinoma: A systematic review and meta-analysis.

European journal of radiology open·2026

Same journal

Ultra-low contrast agent dosage in photon-counting CT angiography of the thoracoabdominal aorta.

European journal of radiology open·2026

Same journal

Intratumoral and peritumoral radiomics for preoperative prediction of pathological complete response to neoadjuvant immunochemotherapy in patients with esophageal squamous cell carcinoma.

European journal of radiology open·2026

Same journal

Role of apparent diffusion coefficient (ADC) and MRI-derived parameters in identifying p53-abnormal subtypes of endometrial cancer.

European journal of radiology open·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 5, 2025

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Low-dose lung CT: Optimizing diagnostic radiation dose - A phantom study.

Michael Zellner^1,2, Sebastian Tschauner^1,2,3, Mathias S Weyland^4,5

¹University Children's Hospital Zürich, Department of Diagnostic Imaging, Zurich, Switzerland.

European Journal of Radiology Open

|December 10, 2024

Summary

This summary is machine-generated.

This study developed a quantitative method to assess low-dose lung CT image quality using image sharpness. Diagnostic quality was achieved at significantly reduced radiation doses, suggesting dose reduction is possible without sacrificing accuracy.

Keywords:

Diagnostic imaging, Lung Low dose Radiation Tomography, X-Ray Computed

More Related Videos

Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy

Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy

Published on: June 7, 2015

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

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

Published on: July 29, 2013

Related Experiment Videos

Last Updated: Jun 5, 2025

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy

Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy

Published on: June 7, 2015

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

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

Published on: July 29, 2013

Area of Science:

Radiology
Medical Imaging
Radiation Dosimetry

Background:

Assessing image quality in low-dose lung computed tomography (CT) is crucial for diagnostic accuracy.
Quantitative methods are needed to determine the lowest radiation exposure yielding diagnostic images.

Purpose of the Study:

To establish a quantitative method for evaluating low-dose lung CT image quality.
To identify the minimum radiation dose required for diagnostic image quality in lung CT.

Main Methods:

Axial volumetric lung CT scans were performed on adult and pediatric phantoms at varying dose levels.
Image sharpness was quantified by measuring the steepness of sigmoid curves at lung-pleura interfaces.
Radiologists assessed diagnostic image quality using Likert scales to determine the sharpness cut-off for adequate images.

Main Results:

Diagnostic image quality was achieved at a median steepness of 713 HU/mm (adult phantom) with an effective dose of 0.13 mSv.
For the pediatric phantom, diagnostic quality was reached at 1139 HU/mm with an effective dose of 0.08 mSv.
These doses correspond to CTDIvol values of 0.14 mGy and 0.13 mGy, respectively.

Conclusions:

Image sharpness measurement provides a reliable quantitative assessment of lung CT image quality.
Low-dose lung CT can achieve sufficient diagnostic quality at effective radiation doses of 0.13 mSv (adult) and 0.08 mSv (pediatric).
Substantial radiation dose reduction in lung CT is feasible without compromising diagnostic accuracy.