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

Divergence Theorem in 3D Space01:20

Divergence Theorem in 3D Space

In vector calculus, flux measures the total flow of a vector field through a surface. For a closed surface in three-dimensional space, this means measuring how much of the field passes outward through every point on the boundary. Directly calculating this flux can be difficult when the surface has a complicated or irregular shape. The Divergence Theorem provides a powerful alternative by relating surface flux to behavior inside the enclosed region.The Divergence Theorem states that the outward...
Fast Fourier Transform01:10

Fast Fourier Transform

The Fast Fourier Transform (FFT) is a computational algorithm designed to compute the Discrete Fourier Transform (DFT) efficiently. By breaking down the calculations into smaller, manageable sections, the FFT significantly reduces the computational complexity involved. Direct computation of an N-point DFT requires N2 complex multiplications, whereas the FFT algorithm needs only (N/2)log⁡2N multiplications, offering a much faster performance.
The computational efficiency of the FFT becomes...
Maxwell-Boltzmann Distribution: Problem Solving01:20

Maxwell-Boltzmann Distribution: Problem Solving

Individual molecules in a gas move in random directions, but a gas containing numerous molecules has a predictable distribution of molecular speeds, which is known as the Maxwell-Boltzmann distribution, f(v).
This distribution function f(v) is defined by saying that the expected number N (v1,v2) of particles with speeds between v1 and v2 is given by
Cylinders in Three-Dimensional Space01:28

Cylinders in Three-Dimensional Space

A cylindrical surface is generated when a two-dimensional profile curve is translated along a straight line in three-dimensional space. The translated copies of the curve form a surface composed of parallel rulings, each oriented in the same fixed direction. This construction allows many three-dimensional forms to be described using relatively simple planar equations.In Cartesian coordinates, a cylindrical surface is often recognized by an equation that omits one of the three variables. For...

You might also read

Related Articles

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

Sort by
Same author

Clinical feasibility of fast adaptive four-dimensional cone-beam computed tomography for lung cancer radiotherapy.

Physics and imaging in radiation oncology·2026
Same author

Simultaneous concurrent chemoradiation and SBRT in stage III NSCLC: Safety report of the phase I hybrid trial.

Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology·2026
Same author

Estimation of accumulated dose to organs at risk in head and neck cancer patients treated with scheduled replanning and dose painting in the ARTFORCE trial.

Physics and imaging in radiation oncology·2026
Same author

Dose-based evaluation of delineation variation in radiotherapy: A scoping review.

Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology·2026
Same author

Acute and long-term toxicity profiles and final oncologic outcomes in the phase III ARTFORCE trial.

Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology·2026
Same author

Quantitative CT Perfusion as a prognostic biomarker for chemotherapy response in patients with pancreatic ductal adenocarcinoma.

Abdominal radiology (New York)·2026

Related Experiment Video

Updated: Jul 14, 2026

A Method for 3D Reconstruction and Virtual Reality Analysis of Glial and Neuronal Cells
12:49

A Method for 3D Reconstruction and Virtual Reality Analysis of Glial and Neuronal Cells

Published on: September 28, 2019

A fast algorithm for gamma evaluation in 3D.

Markus Wendling1, Lambert J Zijp, Leah N McDermott

  • 1Department of Radiation Oncology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands.

Medical Physics
|June 9, 2007
PubMed
Summary

A new fast algorithm significantly speeds up the 3D gamma evaluation for radiation therapy dose distributions. This method improves accuracy and efficiency in intensity-modulated radiation therapy (IMRT) verification.

More Related Videos

Evaluation of the Spatial Distribution of γH2AX following Ionizing Radiation
09:28

Evaluation of the Spatial Distribution of γH2AX following Ionizing Radiation

Published on: August 7, 2010

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
11:34

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

Published on: December 3, 2013

Related Experiment Videos

Last Updated: Jul 14, 2026

A Method for 3D Reconstruction and Virtual Reality Analysis of Glial and Neuronal Cells
12:49

A Method for 3D Reconstruction and Virtual Reality Analysis of Glial and Neuronal Cells

Published on: September 28, 2019

Evaluation of the Spatial Distribution of γH2AX following Ionizing Radiation
09:28

Evaluation of the Spatial Distribution of γH2AX following Ionizing Radiation

Published on: August 7, 2010

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
11:34

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

Published on: December 3, 2013

Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Computational Imaging

Background:

  • The gamma-evaluation method is crucial for quantitatively comparing radiation dose distributions, especially in intensity-modulated radiation therapy (IMRT).
  • A significant drawback of the current gamma evaluation is its computationally intensive nature, particularly for 3D dose distributions.

Purpose of the Study:

  • To present a novel, fast algorithm for high-resolution, full 3D gamma evaluation.
  • To address the computational time limitations of existing gamma evaluation methods.

Main Methods:

  • Developed a fast algorithm for full 3D gamma evaluation at high resolution by resampling dose distributions onto a common grid.
  • Implemented a subvoxel resolution search strategy for agreement points within the evaluated dose distribution.
  • Achieved efficiency through a spherical search with on-the-fly interpolation and a chosen maximum search distance and sample step size.

Main Results:

  • The algorithm demonstrates speed and computer memory efficiency while maintaining high spatial resolution.
  • Statistical measures of the 3D gamma distribution converge with decreasing sample step size.
  • Full 3D gamma evaluation showed improved gamma indices (average decrease of at least 8%) compared to 2.5D methods in clinical examples.

Conclusions:

  • The presented fast algorithm enables efficient and accurate full 3D gamma evaluation for complex dose distributions.
  • This advancement is vital for improving the verification process in modern radiation therapy techniques like IMRT.
  • The method offers a significant improvement in accuracy and speed over traditional 2.5D evaluations.