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

X-ray Imaging01:24

X-ray Imaging

10.5K
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...
10.5K
X-ray Crystallography02:18

X-ray Crystallography

26.3K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
26.3K
Imaging Studies for Cardiovascular System III: X-Ray01:20

Imaging Studies for Cardiovascular System III: X-Ray

494
The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
494
Uncertainty in Measurement: Accuracy and Precision03:37

Uncertainty in Measurement: Accuracy and Precision

103.1K
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. 
103.1K
Position-effect Variegation02:32

Position-effect Variegation

7.1K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
7.1K
Accuracy and Precision01:52

Accuracy and Precision

15.6K
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.  Highly accurate...
15.6K

You might also read

Related Articles

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

Sort by
Same author

Changes in Yields of Water Radiolysis Species and Strand Breaks of Pbr322 Plasmid DNA under Ultra-high Dose Rate C Ions: Towards the Elucidation of the Mechanism of FLASH Radiotherapy.

Radiation research·2026
Same author

Feasibility of upright carbon ion radiotherapy for prostate cancer: Dosimetric comparison between supine and upright postures.

Medical physics·2026
Same author

Room-temperature hyperpolarization <i>via</i> polarization relay through rapid cocrystallization.

Chemical science·2026
Same author

Reconstruction preserving the talonavicular and subtalar joints for flexible rocker-bottom foot deformity in rheumatoid arthritis: A case report.

Modern rheumatology case reports·2026
Same author

Gas-loading system compatible with ultrafast magic-angle spinning for solid-state nuclear magnetic resonance in gas atmospheres.

Chemical communications (Cambridge, England)·2026
Same author

Comparative evaluation of the Mayo Clinic Florida microdosimetric kinetic model and mMKM for carbon ion treatment planning: A matRad-based analysis.

Journal of applied clinical medical physics·2026

Related Experiment Video

Updated: Feb 10, 2026

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
06:28

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera

Published on: January 30, 2020

13.3K

Precision imaging of 4.4 MeV gamma rays using a 3-D position sensitive Compton camera.

Ayako Koide1, Jun Kataoka2, Takamitsu Masuda1

  • 1Waseda University, Graduate School of Advanced Science and Engineering, Tokyo, Japan.

Scientific Reports
|May 27, 2018
PubMed
Summary

This study demonstrates a new 3D Compton camera for imaging 4.4 MeV gamma rays, crucial for proton therapy range verification and astrophysics. The camera precisely localizes these gamma rays, confirming its potential for medical and scientific applications.

More Related Videos

Preparing Adherent Cells for X-ray Fluorescence Imaging by Chemical Fixation
07:54

Preparing Adherent Cells for X-ray Fluorescence Imaging by Chemical Fixation

Published on: March 12, 2015

9.9K
Picometer-Precision Atomic Position Tracking through Electron Microscopy
15:04

Picometer-Precision Atomic Position Tracking through Electron Microscopy

Published on: July 3, 2021

8.4K

Related Experiment Videos

Last Updated: Feb 10, 2026

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
06:28

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera

Published on: January 30, 2020

13.3K
Preparing Adherent Cells for X-ray Fluorescence Imaging by Chemical Fixation
07:54

Preparing Adherent Cells for X-ray Fluorescence Imaging by Chemical Fixation

Published on: March 12, 2015

9.9K
Picometer-Precision Atomic Position Tracking through Electron Microscopy
15:04

Picometer-Precision Atomic Position Tracking through Electron Microscopy

Published on: July 3, 2021

8.4K

Area of Science:

  • Nuclear physics
  • Medical imaging
  • Astrophysics

Background:

  • Imaging nuclear gamma-ray lines (1-10 MeV) is underdeveloped for medical and physical applications.
  • 4.4 MeV gamma rays from 12C* or 11B* are key indicators for proton therapy dose delivery and range verification.
  • Cosmic 4.4 MeV gamma rays probe nucleosynthesis in the universe.

Purpose of the Study:

  • To present a high-precision image of 4.4 MeV gamma rays using a novel 3D position sensitive Compton camera (3D-PSCC).
  • To evaluate the 3D-PSCC's capability in localizing gamma rays relevant to proton therapy applications.

Main Methods:

  • Irradiated water, PMMA, and Ca(OH)2 with a 70 MeV proton beam.
  • Identified nuclear lines using a High-Purity Germanium (HPGe) detector.
  • Utilized a 3D-PSCC with an energy window of 3-5 MeV to image 4.4 MeV gamma rays.

Main Results:

  • The 4.4 MeV gamma rays formed a broad peak, including single and double escape peaks.
  • The 3D-PSCC successfully generated a high-precision image of the 4.4 MeV gamma rays.
  • The gamma-ray image concentrated sharply near the Bragg peak, validating the camera's precision.

Conclusions:

  • The developed 3D-PSCC demonstrates high precision in imaging 4.4 MeV gamma rays.
  • The camera's ability to localize gamma rays near the Bragg peak shows promise for proton therapy verification.
  • This technology has potential applications in both medical physics and gamma-ray astronomy.