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

Light as Energy01:35

Light as Energy

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 less...
Photoluminescence: Applications01:14

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
Focusing of Light in the Eye01:16

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
Light Acquisition02:16

Light Acquisition

In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
Photoelectric Effect02:26

Photoelectric Effect

When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...

You might also read

Related Articles

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

Sort by
Same author

Gender Trends in Authorship Across Neuroradiology Journals (2016-2025).

AJNR. American journal of neuroradiology·2026
Same author

GLP-1 receptor agonists in obstructive sleep apnea: A propensity score-matched real-world analysis.

Respiratory medicine·2026
Same author

Promotion from Associate Professor to Full Professor Should Not Be Monolithic: A National Bibliometric Study by Radiology Subspecialty.

Academic radiology·2026
Same author

Utilization of Emergency Department (ED) Neuroimaging From 2016 to 2025: Analysis in Over 3 Million ED Encounters from the Multicenter Cosmos EHR Dataset.

AJR. American journal of roentgenology·2026
Same author

Machine Learning for Distal Medium-Vessel Occlusion Detection: Advances, Challenges, and Future Directions.

Journal of neuroimaging : official journal of the American Society of Neuroimaging·2026
Same author

The Perfusion Collateral Impairment Score Provides Complementary Prognostic Information Beyond CTA Collateral Scores and Standard Imaging Predictors in Anterior Circulation Large Vessel Occlusion Stroke.

AJNR. American journal of neuroradiology·2026
Same journal

The efficacy of multisite MRI scanners for total brain volume measurements: a cross-sectional study in Saudi Arabia.

Frontiers in radiology·2026
Same journal

Deep learning image reconstruction technique for improving image quality and radiation dose reduction compared to iterative reconstruction technique in non-contrast CT head imaging.

Frontiers in radiology·2026
Same journal

Self-adaptive forward-forward network for anomaly detection and medical image analysis.

Frontiers in radiology·2026
Same journal

Case Report: Structured MRI assessment of posterior thalamic infarction in a distribution compatible with posterior choroidal artery territory presenting as Déjerine-Roussy syndrome in an adolescent: differentiating arterial ischemia from venous thrombosis and thalamic neoplasm.

Frontiers in radiology·2026
Same journal

Transarterial embolization in the management of chronic shoulder pain: clinical evidence and emerging therapeutic role.

Frontiers in radiology·2026
Same journal

Editorial: The rise of postmortem imaging in forensic radiology and paleoradiology.

Frontiers in radiology·2026
See all related articles

Related Experiment Video

Updated: Jun 30, 2026

A Novel Light Damage Paradigm for Use in Retinal Regeneration Studies in Adult Zebrafish
09:31

A Novel Light Damage Paradigm for Use in Retinal Regeneration Studies in Adult Zebrafish

Published on: October 24, 2013

Bringing light to the reading room.

Christine Joyce1, Mohammad Adam Kassar2, Alexandria Knecht1

  • 1Department of Radiology, West Virginia University, Morgantown, WV, United States.

Frontiers in Radiology
|June 29, 2026
PubMed
Summary
This summary is machine-generated.

Higher ambient lighting does not impact neuroradiologists' ability to detect intracranial hemorrhage on CT scans. Current American College of Radiology (ACR) guidelines for reading room illuminance may need re-evaluation due to technological advancements.

Keywords:
ambient lightbrain hemorrhagecomputed tomgraphy (CT)diagnostic accuracymonitor

More Related Videos

Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger
05:50

Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger

Published on: January 16, 2020

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

Applications for Open Source Microplate-Compatible Illumination Panels

Published on: October 3, 2019

Related Experiment Videos

Last Updated: Jun 30, 2026

A Novel Light Damage Paradigm for Use in Retinal Regeneration Studies in Adult Zebrafish
09:31

A Novel Light Damage Paradigm for Use in Retinal Regeneration Studies in Adult Zebrafish

Published on: October 24, 2013

Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger
05:50

Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger

Published on: January 16, 2020

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

Applications for Open Source Microplate-Compatible Illumination Panels

Published on: October 3, 2019

Area of Science:

  • Radiology
  • Medical Imaging
  • Neuroradiology

Background:

  • Current American College of Radiology (ACR) guidelines recommend 25-75 lux for reading rooms.
  • These guidelines, based on 2007-2009 studies, predate modern display technology advancements.
  • No recent studies have assessed ambient lighting effects on intracranial hemorrhage detection via CT.

Purpose of the Study:

  • To evaluate if higher ambient lighting (>400 lux) affects diagnostic accuracy in detecting intracranial hemorrhage on brain CT.
  • Comparison made against standard low-light conditions (20-70 lux).

Main Methods:

  • 42 non-contrast head CT scans were reviewed by four board-certified neuroradiologists.
  • Scans were interpreted twice: once in bright light (>400 lux) and once in standard low light (20-70 lux).
  • A >6-month washout period minimized bias; sensitivity, specificity, and accuracy were calculated.

Main Results:

  • No statistically significant differences observed in sensitivity (0.974 vs. 0.974), specificity (0.978 vs. 1.0), or accuracy (0.976 vs. 0.988) between lighting conditions.
  • p-values for comparisons were 1.00 for sensitivity and accuracy, and 0.49 adjusted for specificity.

Conclusions:

  • Increased ambient lighting levels do not significantly impair neuroradiologists' detection of intracranial hemorrhage on modern displays.
  • Findings suggest a need to re-evaluate current ACR reading room illuminance guidelines.
  • Further multi-center studies are recommended to validate these findings across various pathologies and imaging modalities.