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

The Electromagnetic Spectrum02:37

The Electromagnetic Spectrum

64.8K
The electromagnetic spectrum consists of all the types of electromagnetic radiation arranged according to their frequency and wavelength. Each of the various colors of visible light has specific frequencies and wavelengths associated with them, and you can see that visible light makes up only a small portion of the electromagnetic spectrum. Because the technologies developed to work in various parts of the electromagnetic spectrum are different, for reasons of convenience and historical...
64.8K
The Electromagnetic Spectrum01:24

The Electromagnetic Spectrum

33.4K
Electromagnetic waves are categorized according to their wavelengths and frequencies, giving the electromagnetic spectrum. These waves are classified as radio, infrared, ultraviolet, etc. Radio waves refer to electromagnetic radiation with wavelengths ranging from millimeters to kilometers. Radio waves are commonly used for audio communications (i.e., radios) and typically result from an alternating current in the wires of a broadcast antenna. They cover a broad wavelength range and are used...
33.4K
Light as Energy01:35

Light as Energy

95.6K
The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
95.6K
Energy Budgets00:51

Energy Budgets

10.6K
Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species, like annual plants, have only one reproductive episode in their lifetimes and consequently have short lifespans. Iteroparous species, by contrast, have many reproductive events during their lifetimes but have relatively few offspring. These two...
10.6K
IR Spectrum01:19

IR Spectrum

2.0K
When infrared (IR) radiation passes through a molecule, the bonds stretch or bend by absorbing the radiation. This absorption creates the molecule's absorption spectrum, which is the plot of its percentage transmittance versus wavenumber.
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0%...
2.0K
Nuclear Binding Energy02:13

Nuclear Binding Energy

14.7K
The difference between the calculated and experimentally measured masses is known as the mass defect of the atom. In the case of helium-4, the mass defect indicates a “loss” in mass of 4.0331 amu – 4.0026 amu = 0.0305 amu. The loss in mass accompanying the formation of an atom from protons, neutrons, and electrons is due to the conversion of that mass into energy that is evolved as the atom forms. The nuclear binding energy is the energy produced when the atoms’ nucleons are bound...
14.7K

You might also read

Related Articles

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

Sort by
Same author

Preclinical evaluation of a bioartificial kidney loaded with functional renal tubular cells in a Bama miniature pig model of acute renal failure.

Burns & trauma·2026
Same author

Integrating network pharmacology and in vivo evaluation reveals chicory (Cichorium intybus L.) extract activates autophagy to alleviate fatty liver hemorrhagic syndrome in laying hens.

Poultry science·2026
Same author

MCEPANet: A connectivity-edge guided attention network for robust medical image segmentation with multi-scale boundary preservation.

Biomedical physics & engineering express·2026
Same author

Multiomics Reveal Low Temperatures Play Positive Roles in Flavonoids and Phenolic Accumulation in Meconopsis punicea.

Physiologia plantarum·2026
Same author

Discovery of R-185 as a Potent and Orally Efficacious GPR52 Agonist with Potential for Treating Schizophrenia and Related Neuropsychiatric Disorders.

Journal of medicinal chemistry·2026
Same author

Author Correction: Inactivating SnRK1β1A promotes broad-spectrum disease resistance in rice.

Nature·2026
Same journal

LLM-enhanced Neuron Segmentation and Reconstruction in Complex Mouse Brain Images.

IEEE transactions on medical imaging·2026
Same journal

Matrixed-Spectrum Decomposition Accelerated Linear Boltzmann Transport Equation Solver for Fast Scatter Correction in Multi-Spectral CT.

IEEE transactions on medical imaging·2026
Same journal

The Ritz Adjoint Method for MRI Pulse Design.

IEEE transactions on medical imaging·2026
Same journal

Physiology-guided Self-supervised Learning for Simultaneous Dual-Tracer PET Separation.

IEEE transactions on medical imaging·2026
Same journal

Informed-Exploration Reinforcement Learning for Automated Virtual Coronary Intervention Planning.

IEEE transactions on medical imaging·2026
Same journal

4D Reconstruction of Fetal Left Ventricle from Echocardiography via 2.5D Radial Segmentation and Graph-Fourier Reconstruction.

IEEE transactions on medical imaging·2026
See all related articles

Related Experiment Video

Updated: Jan 22, 2026

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
10:28

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT

Published on: January 22, 2018

11.5K

Spectrum Estimation-Guided Iterative Reconstruction Algorithm for Dual Energy CT.

Shaojie Chang, Mengfei Li, Hengyong Yu

    IEEE Transactions on Medical Imaging
    |June 29, 2019
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel algorithm for dual-energy computed tomography (DECT) that simultaneously estimates X-ray spectra and reconstructs images. This integrated approach improves image quality and reduces errors compared to traditional methods.

    More Related Videos

    Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach
    08:01

    Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach

    Published on: August 24, 2018

    9.4K
    Structure of HIV-1 Capsid Assemblies by Cryo-electron Microscopy and Iterative Helical Real-space Reconstruction
    12:38

    Structure of HIV-1 Capsid Assemblies by Cryo-electron Microscopy and Iterative Helical Real-space Reconstruction

    Published on: August 9, 2011

    17.8K

    Related Experiment Videos

    Last Updated: Jan 22, 2026

    Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
    10:28

    Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT

    Published on: January 22, 2018

    11.5K
    Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach
    08:01

    Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach

    Published on: August 24, 2018

    9.4K
    Structure of HIV-1 Capsid Assemblies by Cryo-electron Microscopy and Iterative Helical Real-space Reconstruction
    12:38

    Structure of HIV-1 Capsid Assemblies by Cryo-electron Microscopy and Iterative Helical Real-space Reconstruction

    Published on: August 9, 2011

    17.8K

    Area of Science:

    • Medical Imaging
    • Computational Imaging
    • X-ray Physics

    Background:

    • Accurate X-ray spectrum estimation is crucial for dual-energy computed tomography (DECT) image reconstruction.
    • Traditional spectrum estimation methods are often time-consuming, costly, and can lead to image quality degradation due to spectrum mismatch.

    Purpose of the Study:

    • To develop a simultaneous spectrum estimation and image reconstruction algorithm for DECT.
    • To improve the accuracy and efficiency of DECT image reconstruction by integrating spectrum estimation directly into the iterative process.

    Main Methods:

    • A novel iterative reconstruction algorithm integrating spectrum estimation and image reconstruction was proposed.
    • The algorithm utilizes a model-based spectrum representation and a block coordinate descent (BCD) method to solve the multi-variable optimization problem.
    • Regularization techniques were incorporated for noise suppression.

    Main Results:

    • Numerical simulations and physical phantom experiments validated the proposed method.
    • Accurate spectrum estimation and high-quality image reconstruction were achieved across various noise levels.
    • The proposed method demonstrated superior image quality compared to reconstructions using known exact spectra.

    Conclusions:

    • The developed spectrum estimation-guided iterative reconstruction algorithm effectively improves DECT image quality.
    • The method is robust in noisy data applications and offers a more efficient alternative to independent spectrum estimation techniques.