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

Fischer Projections02:18

Fischer Projections

Learning to draw Fischer projections of molecules and understanding their relevance plays a crucial role in the visual depiction of organic molecules. A Fischer projection is a two-dimensional projection on a planar surface to simplify the three-dimensional wedge–dash representation of molecules. This is especially helpful in the case of molecules with multiple chiral centers that can be difficult to draw. Here, all the bonds of interest are represented as horizontal or vertical lines. While...
Accelerating Fluids01:17

Accelerating Fluids

When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
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...
Computed Tomography01:10

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...
Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:

You might also read

Related Articles

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

Sort by
Same author

Development and implementation of a unified curriculum in math, statistics, computing, and informatics with financial considerations for medical physics graduate programs.

Journal of applied clinical medical physics·2026
Same author

HERVOminer: a sequence similarity-based approach for recognizing endogenous retrovirus origin of the peptidome.

NPJ precision oncology·2026
Same author

Targeting PCK1 to overcome CDK4/6 inhibitor resistance for breast cancer therapy.

Cancer letters·2026
Same author

Heterologous prime-boost immunization of AAV-based neoantigen cancer vaccine induces anti-tumor immunity to inhibit tumor growth and relapse.

Cancer immunology, immunotherapy : CII·2026
Same author

Targeting ENO1 reprograms macrophage polarization to trigger antitumor immunity and improves the therapeutic effect of radiotherapy.

Cell death & disease·2026
Same author

Loss of MicroRNA-29b promotes DNMT3b-mediated STING downregulation to attenuate radiotherapy-induced antitumor immunity in KRAS-mutated colorectal cancer.

NPJ precision oncology·2026

Related Experiment Video

Updated: May 17, 2026

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

Fast polyenergetic forward projection for image formation using OpenCL on a heterogeneous parallel computing

Lili Zhou1, K S Clifford Chao, Jenghwa Chang

  • 1Radiation Oncology, Weill Cornell Medical College, Cornell University, New York, NY 10065, USA.

Medical Physics
|November 7, 2012
PubMed
Summary
This summary is machine-generated.

This study developed a faster method for creating realistic digital X-ray images using parallel computing. The new technique significantly reduces image generation time, making it suitable for real-time image-guided radiotherapy.

More Related Videos

Microfluidic Imaging Flow Cytometry by Asymmetric-detection Time-stretch Optical Microscopy (ATOM)
07:19

Microfluidic Imaging Flow Cytometry by Asymmetric-detection Time-stretch Optical Microscopy (ATOM)

Published on: June 28, 2017

Related Experiment Videos

Last Updated: May 17, 2026

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

Microfluidic Imaging Flow Cytometry by Asymmetric-detection Time-stretch Optical Microscopy (ATOM)
07:19

Microfluidic Imaging Flow Cytometry by Asymmetric-detection Time-stretch Optical Microscopy (ATOM)

Published on: June 28, 2017

Area of Science:

  • Medical Imaging
  • Computational Physics
  • Radiotherapy Technology

Background:

  • Digital phantoms from CT scans are crucial for clinical research but often lack optimal speed and quality for real-time applications.
  • Existing methods struggle with the computational demands of simulating polyenergetic X-ray sources.
  • Real-time comparison of simulated and acquired radiography is essential for advanced radiotherapy.

Purpose of the Study:

  • To develop a fast and realistic method for polyenergetic forward projection image formation.
  • To leverage parallel computing with CPUs and GPUs (GPGPU) using OpenCL for accelerated image simulation.
  • To enable real-time applications in image-guided radiotherapy (IGRT).

Main Methods:

  • Constructed 3D attenuation phantoms from segmented CT images using NIST mass attenuation coefficients.
  • Employed the Siddon method for X-ray transmission line integral calculation across various photon energies.
  • Implemented parallel computing strategies (task and data parallelism) with OpenCL on a CPU/GPGPU ecosystem.

Main Results:

  • Achieved a computation time of 0.3 seconds per polyenergetic projection image using GPGPU, a significant improvement over the CPU-based method (141 seconds).
  • The GPGPU implementation demonstrated high fidelity, with projection images virtually indistinguishable from CPU-generated ones.
  • Task overlapping strategies accelerated the generation of digitally reconstructed radiographies (DRRs).

Conclusions:

  • Successfully simulated realistic polyenergetic projection images using digital phantoms and parallel computing.
  • The GPGPU/OpenCL implementation provides computation speeds suitable for real-time IGRT.
  • Optimized processing speed enhances the utility of digital phantoms in radiotherapy.