Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Wood Panel Products01:18

Wood Panel Products

408
Wood panel products are essential materials used in construction for applications such as flooring, siding, and roofing, typically available in standard dimensions of 4 feet by 8 feet, with thicknesses varying from one-quarter of an inch to one and one-eighth inches. Among the most common types of wood panels is plywood, which is produced by gluing multiple layers of thin wood veneers under pressure. The grain of the outer veneers runs lengthwise, while the grains of the interior layers run...
408
Internal Energy02:00

Internal Energy

36.8K
The total of all possible kinds of energy present in a substance is called the internal energy (U), sometimes symbolized as E. Suppose a system with initial internal energy, Uinitial, undergoes a change in energy (transfer of work or heat), and the final internal energy of the system is Ufinal. Change in internal energy equals the difference between Ufinal and Uinitial.
36.8K
Internal Energy01:29

Internal Energy

7.1K
The internal energy of a thermodynamic system is the sum of the kinetic and potential energies of all the molecules or entities in the system. The kinetic energy of an individual molecule includes contributions due to its rotation and vibration, as well as its translational energy. The potential energy is associated only with the interactions between one molecule and the other molecules of the system. Neither the system's location nor its motion is of any consequence as far as the internal...
7.1K
Internal Receptors01:31

Internal Receptors

74.7K
Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.
74.7K
Flat Belts: Problem Solving01:28

Flat Belts: Problem Solving

840
Flat belts are crucial in many industrial applications as they help transmit power from one pulley to another. The concept of forces and moments is used to determine the maximum moment on a pulley. For instance, consider a flat belt that wraps around two pulleys, A and B, with radii of 30 cm and 10 cm, respectively. The angle between the belt and the horizontal is 20 degrees at the pulleys. As pulley B rotates clockwise and drives pulley A, tension T2 is caused at one end of the belt, while...
840
Uncertainty in Measurement: Accuracy and Precision03:37

Uncertainty in Measurement: Accuracy and Precision

104.1K
Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value. 
104.1K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Spherical radiomics for radiogenomic assessment of glioblastoma heterogeneity.

Neuro-oncology advances·2026
Same author

Optimization of Extraction Process for Flavonoids from <i>Sonchus oleraceus</i> L. and Evaluation of Anti-Inflammatory Activity of Luteoloside.

Molecules (Basel, Switzerland)·2026
Same author

Multimodality and temporal analysis of cervical cancer treatment response.

Quantitative imaging in medicine and surgery·2026
Same author

Dose-escalated stereotactic body radiotherapy re-irradiation in patients with recurrent head and neck cancer: a prospective phase 2 study using automated non-coplanar volumetric modulated arc therapy.

Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology·2025
Same author

Multiple source-to-isocenter-distance (SID) optimization for 4<i>π</i>robotic radiotherapy.

Physics in medicine and biology·2025
Same author

Functional Avoidance Liver 4π Stereotactic Body Radiation Therapy Informed by Quantitative Gadoxetic Acid Contrast-Enhanced Magnetic Resonance T1 Mapping.

International journal of radiation oncology, biology, physics·2025
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
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Feb 11, 2026

Applications for Open Source Microplate-Compatible Illumination Panels
08:48

Applications for Open Source Microplate-Compatible Illumination Panels

Published on: October 3, 2019

8.0K

Combinando imágenes de panel plano con marcadores BB internos para una localización precisa de la fuente de

Yibin Ling1,2, Catherine H Frank2, Naoki Dominguez Kondo2

  • 1Department of Nuclear Engineering, University of California, Berkeley, CA, USA.

Medical physics
|February 10, 2026
PubMed
Resumen
Este resumen es generado por máquina.

Este estudio optimizó un sistema de panel plano para la braquiterapia de alta dosis (HDR), mejorando la precisión de localización de la fuente en relación con el implante. El nuevo método reduce significativamente los errores causados por el movimiento del implante, mejorando la precisión del tratamiento.

Palabras clave:
Las técnicas HDR son técnicas HDR.La braquiterapia es una braquiterapia.Terapia guiada por imágenes.

Más Videos Relacionados

Super-Resolution Imaging to Study Co-Localization of Proteins and Synaptic Markers in Primary Neurons
14:02

Super-Resolution Imaging to Study Co-Localization of Proteins and Synaptic Markers in Primary Neurons

Published on: October 31, 2020

6.3K
Three-dimensional Imaging of Bacterial Cells for Accurate Cellular Representations and Precise Protein Localization
06:33

Three-dimensional Imaging of Bacterial Cells for Accurate Cellular Representations and Precise Protein Localization

Published on: October 29, 2019

10.7K

Videos de Experimentos Relacionados

Last Updated: Feb 11, 2026

Applications for Open Source Microplate-Compatible Illumination Panels
08:48

Applications for Open Source Microplate-Compatible Illumination Panels

Published on: October 3, 2019

8.0K
Super-Resolution Imaging to Study Co-Localization of Proteins and Synaptic Markers in Primary Neurons
14:02

Super-Resolution Imaging to Study Co-Localization of Proteins and Synaptic Markers in Primary Neurons

Published on: October 31, 2020

6.3K
Three-dimensional Imaging of Bacterial Cells for Accurate Cellular Representations and Precise Protein Localization
06:33

Three-dimensional Imaging of Bacterial Cells for Accurate Cellular Representations and Precise Protein Localization

Published on: October 29, 2019

10.7K

Área de la Ciencia:

  • Física médica La física médica es la física médica.
  • Radioncología Oncología de Radiación.
  • Imágenes médicas de imágenes médicas.

Sus antecedentes:

  • La braquiterapia de alta dosis (HDR) utiliza fuentes de radiación internas para una orientación precisa del tumor.
  • La caída de la dosis aguda de radiación en la braquiterapia HDR aumenta la sensibilidad a los errores de localización.

Objetivo del estudio:

  • Optimizar un sistema basado en paneles planos para mejorar la precisión de la localización de la fuente en la braquiterapia HDR.
  • Para mejorar la localización en relación con las coordenadas de la habitación y el objetivo implantado.

Principales métodos:

  • Simulación de rayos gamma Ir-192 utilizando Monte Carlo para la reconstrucción de imágenes.
  • Empleó un detector de panel plano con rodamientos de bolas de tungsteno (BB) en el sofá para la localización de coordenadas de la habitación.
  • Utilizó un alambre ficticio con BB insertados en catéteres para la localización relativa al implante a través de la transformación rígida.

Principales resultados:

  • Se logró una precisión de 0,78 mm para la localización de la fuente en relación con las coordenadas de la habitación.
  • Se demostró que el error de localización está influenciado por las distancias BB-to-source y BB-to-detector.
  • Reducción del error de localización de la fuente de 15,8 mm a 1,26 mm en relación con el implante durante el movimiento simulado.

Conclusiones:

  • Se ha validado un sistema de detector de panel plano con marcadores de sofá y un cable ficticio para una robusta localización de la fuente de braquiterapia HDR.
  • El método desarrollado mejora la precisión de localización en relación tanto con las coordenadas de la habitación como con el implante.
  • Este enfoque ofrece una mayor precisión para la planificación y administración del tratamiento de braquiterapia HDR.