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

9.5K
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...
9.5K
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

660
DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
660

You might also read

Related Articles

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

Sort by
Same author

Identification of an Elusive <i>CBFA2T3::GLIS2</i> Fusion Variant in Acute Megakaryoblastic Leukemia by Whole Genome Sequencing.

EJHaem·2026
Same author

Deep Learning-based Bone Mineral Density Prediction Using Pediatric Chest Radiographs: A Multicenter Feasibility Study.

Radiology·2026
Same author

In-Cavity Lithium Deposition Enabled by Carbon Framework-Integrated Separator for Stable Low-Pressure Cycling.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Increased risk of neurodevelopmental impairment associated with reduced brain volume at term-equivalent age in preterm infants with germinal matrix hemorrhage.

Neuroradiology·2026
Same author

Deep learning model for identification of metabolic bone disease of prematurity using wrist radiographs.

Scientific reports·2026
Same author

Machine learning-driven exosome-mimetic lipid nanoparticles for tumor-specific targeting.

Nano convergence·2026

Related Experiment Video

Updated: Mar 30, 2026

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

11.8K

Knowledge-based iterative model reconstruction: comparative image quality and radiation dose with a pediatric

Young Jin Ryu1,2, Young Hun Choi3,4, Jung-Eun Cheon1,2,5

  • 1Department of Radiology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea.

Pediatric Radiology
|November 8, 2015
PubMed
Summary

Knowledge-based iterative reconstruction (IMR) in CT scans offers similar image quality to standard filtered back-projection at significantly lower radiation doses. This advanced technique allows for reduced radiation exposure in pediatric phantom imaging.

Keywords:
ChildrenComputed tomographyInfantsIterative model reconstructionIterative reconstructionKnowledge-based iterative reconstructionPediatricRadiation

More Related Videos

Patient-Specific Polyvinyl Alcohol Phantom Fabrication with Ultrasound and X-Ray Contrast for Brain Tumor Surgery Planning
08:41

Patient-Specific Polyvinyl Alcohol Phantom Fabrication with Ultrasound and X-Ray Contrast for Brain Tumor Surgery Planning

Published on: July 14, 2020

9.3K
X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
08:30

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

15.0K

Related Experiment Videos

Last Updated: Mar 30, 2026

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

11.8K
Patient-Specific Polyvinyl Alcohol Phantom Fabrication with Ultrasound and X-Ray Contrast for Brain Tumor Surgery Planning
08:41

Patient-Specific Polyvinyl Alcohol Phantom Fabrication with Ultrasound and X-Ray Contrast for Brain Tumor Surgery Planning

Published on: July 14, 2020

9.3K
X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
08:30

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

15.0K

Area of Science:

  • Medical Imaging
  • Radiology
  • Image Reconstruction

Background:

  • CT imaging in pediatric phantoms is crucial for optimizing reconstruction techniques.
  • Knowledge-based iterative reconstruction (KBIR) shows promise for improving CT protocols.

Purpose of the Study:

  • To compare radiation dose and image quality across different reconstruction algorithms.
  • Evaluate KBIR (IMR), hybrid iterative reconstruction (iDose(4)), and filtered back-projection (FBP).

Main Methods:

  • An anthropomorphic pediatric phantom was scanned at seven radiation dose levels.
  • CT data were reconstructed using IMR (levels 1-3), iDose(4) (levels 3, 7), and FBP.
  • Image quality metrics included noise, SNR, CNR, and spatial resolution.

Main Results:

  • KBIR (IMR) and iDose(4) generally outperformed FBP in noise reduction and resolution.
  • IMR level 2 at 24% dose achieved image quality comparable to FBP at 100% dose.
  • iDose(4) level 3 at 50% dose also showed comparable noise levels to FBP at 100% dose.

Conclusions:

  • Reduced-dose IMR (24% dose) provides image quality similar to routine-dose FBP (100% dose).
  • This demonstrates significant radiation dose reduction potential for pediatric CT imaging.
  • IMR offers comparable image quality to half-dose iDose(4) reconstruction.