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

Calibration Curves: Linear Least Squares01:20

Calibration Curves: Linear Least Squares

4.0K
A calibration curve is a plot of the instrument's response against a series of known concentrations of a substance. This curve is used to set the instrument response levels, using the substance and its concentrations as standards. Alternatively, or additionally, an equation is fitted to the calibration curve plot and subsequently used to calculate the unknown concentrations of other samples reliably.
For data that follow a straight line, the standard method for fitting is the linear...
4.0K
Instrument Calibration01:12

Instrument Calibration

644
Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...
644
X-ray Imaging01:24

X-ray Imaging

9.7K
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
9.7K
Estimation of the Physical Quantities01:05

Estimation of the Physical Quantities

7.2K
On many occasions, physicists, other scientists, and engineers need to make estimates of a particular quantity. These are sometimes referred to as guesstimates, order-of-magnitude approximations, back-of-the-envelope calculations, or Fermi calculations. The physicist Enrico Fermi was famous for his ability to estimate various kinds of data with surprising precision. Estimating does not mean guessing a number or a formula at random. Instead, estimation means using prior experience and sound...
7.2K

You might also read

Related Articles

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

Sort by
Same author

Ultrasound-based assessment of peri-implant mucosal thickness: an ex vivo comparative study with artificial intelligence-assisted image analysis.

BMC oral health·2026
Same author

Zeitschrift fur Orthopadie und Unfallchirurgie·2026
Same author

Towards smart sterile supply cycles.

International journal of computer assisted radiology and surgery·2026
Same author

Dynamic compliance of the CSF system in iNPH (Part I) - in vitro investigation of the impact of spinal canal stenoses.

Fluids and barriers of the CNS·2026
Same author

Safe and usable ensemble formation for networked medical devices: a comparative study of 5G, NFC and pop-up pairing.

International journal of computer assisted radiology and surgery·2026
Same author

Zeitschrift fur Orthopadie und Unfallchirurgie·2026
Same journal

Correction to "On the shape of the radiation survival curve in tumor spheroids: The role of oxygen heterogeneity".

Medical physics·2026
Same journal

Multi-view constrained semi-supervised vertebra detection for 3D ultrasound spine volume.

Medical physics·2026
Same journal

Accuracy of quantitative <sup>177</sup>Lu SPECT/CT imaging: A systematic review.

Medical physics·2026
Same journal

Physics-constrained dual-domain network for CBCT reconstruction from orthogonal X-rays in gynecologic radiotherapy.

Medical physics·2026
Same journal

Decomposition-based harmonization for quantitative PET imaging across scanners and radiotracers.

Medical physics·2026
Same journal

Development and evaluation of an in vivo dose-based monitoring system for electron FLASH radiation therapy.

Medical physics·2026
See all related articles

Related Experiment Video

Updated: Jan 8, 2026

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering
07:55

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

13.2K

Predictive sensor based x-ray calibration using a physical model.

Matías de la Fuente1, Peter Lutz, Dieter C Wirtz

  • 1Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstr. 20, 52074 Aachen, Germany. fuente@hia.rwth-aachen.de

Medical Physics
|May 16, 2007
PubMed
Summary
This summary is machine-generated.

This study presents a new method for calibrating intraoperative X-ray images, eliminating the need for calibration phantoms. The developed model accurately compensates for geometric distortions, improving accuracy in computer-assisted surgery systems.

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

16.4K
Construction of Models for Nondestructive Prediction of Ingredient Contents in Blueberries by Near-infrared Spectroscopy Based on HPLC Measurements
10:25

Construction of Models for Nondestructive Prediction of Ingredient Contents in Blueberries by Near-infrared Spectroscopy Based on HPLC Measurements

Published on: June 28, 2016

11.1K

Related Experiment Videos

Last Updated: Jan 8, 2026

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering
07:55

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

13.2K
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

16.4K
Construction of Models for Nondestructive Prediction of Ingredient Contents in Blueberries by Near-infrared Spectroscopy Based on HPLC Measurements
10:25

Construction of Models for Nondestructive Prediction of Ingredient Contents in Blueberries by Near-infrared Spectroscopy Based on HPLC Measurements

Published on: June 28, 2016

11.1K

Area of Science:

  • Medical Imaging
  • Surgical Technology
  • Image Processing

Background:

  • Computer-assisted surgery relies on intraoperative X-ray images.
  • Geometric distortions in these images require calibration for accuracy.
  • Current calibration methods use phantoms, which can obscure image data.

Purpose of the Study:

  • To develop an online distortion compensation method for intraoperative X-ray images.
  • To eliminate the need for intraoperative calibration phantoms.
  • To improve the accuracy and reliability of computer-assisted surgery systems.

Main Methods:

  • Developed a computed physical model of an image intensifier and magnetic field sensor.
  • Utilized an optimization algorithm for initial model calibration to minimize error.
  • Implemented an online distortion compensation using the calibrated model and magnetic field data.

Main Results:

  • Achieved online compensation of geometric distortions in X-ray images.
  • Reduced distortions by approximately 80%, with a remaining error of 0.45 mm (max).
  • Distortion correction time is less than 1 second, suitable for intraoperative use.

Conclusions:

  • The model-based dewarping algorithm effectively reduces X-ray image distortions.
  • This approach offers a phantom-free solution for accurate intraoperative image calibration.
  • The method significantly enhances the precision of computer-assisted surgical navigation.