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

Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
Gas Chromatography: Types of Detectors-I01:21

Gas Chromatography: Types of Detectors-I

There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...
Determination of Crystal Structures01:29

Determination of Crystal Structures

In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...

You might also read

Related Articles

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

Sort by
Same author

Generation of noncanonical fumagillin derivatives with a twisted cyclohexane conformation through engineered biosynthesis.

Bioscience, biotechnology, and biochemistry·2025
Same author

Understanding the Scope of Cytochrome P450-Catalyzed Radical Dimerization of Diketopiperazines.

Biochemistry·2025
Same author

Current awareness and use of transthoracic echocardiography in evaluation of valvular heart disease in Kumamoto Prefecture -a report from the Kumamoto cardiovascular echocardiography standardization project.

Journal of echocardiography·2024
Same author

Toward Engineered Biosynthesis of Drugs in Human Cells.

Chembiochem : a European journal of chemical biology·2021
Same author

Current Awareness and Status of Venous Ultrasonography in Kumamoto Prefecture　- A Report of the Kumamoto Cardiovascular Echocardiography Standardization Project.

Circulation reports·2021
Same author

Stool pattern is associated with not only the prevalence of tumorigenic bacteria isolated from fecal matter but also plasma and fecal fatty acids in healthy Japanese adults.

BMC microbiology·2021
Same journal

[Report of the 129th Scientific Meeting of Japan Society of Medical Physics].

Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics·2026
Same journal

[RPT Doi Award: A novel internal target volume definition based on velocity and time of respiratory target motion for external beam radiotherapy].

Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics·2026
Same journal

[RPT Doi Award: Visualization of distribution in the vitreous cavity via eye drops using ultra-heavily T2-weighted sequences in MRI: a preliminary study with enucleated pig eyes].

Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics·2026
Same journal

[RPT Doi Award: Deep learning-based correction for time truncation in cerebral computed tomography perfusion].

Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics·2026
Same journal

[EDITOR'S NOTE].

Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics·2026
Same journal

[Medical Physicist-Patient Communication and Advocacy in Radiation Therapy - Insights from AAPM Task Group No. 422].

Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics·2026
See all related articles

Related Experiment Video

Updated: Jun 6, 2026

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
06:46

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic

Published on: August 25, 2016

[Hologic's Flat-Panel Detector].

Yuji Ogata1, Masao Matsumoto, Koji Suekane

  • 1School of Allied Health Sciences, Faculty of Medicine, Osaka University. ogata@sahs.med.osaka-u.ac.jp

Igaku Butsuri : Nihon Igaku Butsuri Gakkai Kikanshi = Japanese Journal of Medical Physics : an Official Journal of Japan Society of Medical Physics
|May 27, 2003
PubMed
Summary
This summary is machine-generated.

Direct-type Flat-Panel Detectors (FPDs) offer superior spatial resolution but require higher exposure doses and careful image processing compared to indirect-type FPDs. Careful consideration of exposure conditions and image processing is crucial for optimizing direct-type FPD performance.

More Related Videos

Detection of a CDH1 Rare Transcript Variant in Fresh-frozen Gastric Cancer Tissues by Chip-based Digital PCR
09:16

Detection of a CDH1 Rare Transcript Variant in Fresh-frozen Gastric Cancer Tissues by Chip-based Digital PCR

Published on: February 5, 2018

A Coregistered Ultrasound and Photoacoustic Imaging Protocol for the Transvaginal Imaging of Ovarian Lesions
10:21

A Coregistered Ultrasound and Photoacoustic Imaging Protocol for the Transvaginal Imaging of Ovarian Lesions

Published on: March 3, 2023

Related Experiment Videos

Last Updated: Jun 6, 2026

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
06:46

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic

Published on: August 25, 2016

Detection of a CDH1 Rare Transcript Variant in Fresh-frozen Gastric Cancer Tissues by Chip-based Digital PCR
09:16

Detection of a CDH1 Rare Transcript Variant in Fresh-frozen Gastric Cancer Tissues by Chip-based Digital PCR

Published on: February 5, 2018

A Coregistered Ultrasound and Photoacoustic Imaging Protocol for the Transvaginal Imaging of Ovarian Lesions
10:21

A Coregistered Ultrasound and Photoacoustic Imaging Protocol for the Transvaginal Imaging of Ovarian Lesions

Published on: March 3, 2023

Area of Science:

  • Medical Imaging Physics
  • Radiological Technology
  • Digital Radiography

Background:

  • Flat-Panel Detectors (FPDs) are crucial in digital radiography, with direct and indirect types offering distinct imaging characteristics.
  • Evaluating imaging properties like Modulation Transfer Function (MTF) and Detective Quantum Efficiency (DQE) is essential for understanding FPD performance.

Purpose of the Study:

  • To comprehensively measure and compare the digital, pre-sampling, and overall imaging properties of direct-type and indirect-type FPDs.
  • To assess the impact of FPD type on image quality, noise, and required exposure dose in radiographic imaging.

Main Methods:

  • Quantitative evaluation of characteristic curves, MTF, Wiener spectrum (WS), Noise Equivalent Quanta (NEQ), and DQE for both FPD types.
  • Radiographic imaging of square wave charts and chest phantoms to visually and quantitatively assess differences in resolution, contrast, and noise.
  • Qualitative assessment of human body radiographs by radiologists and technologists.

Main Results:

  • Direct-type FPDs exhibited superior MTF but comparable or worse Wiener spectrum (WS) and Detective Quantum Efficiency (DQE) compared to indirect-type FPDs, especially at lower spatial frequencies.
  • Direct-type FPDs required higher exposure doses to achieve diagnostic image quality, similar to indirect-type FPDs under specific conditions.
  • Radiologists noted very good spatial resolution but a tendency for high contrast with direct-type FPDs at standard parameters.

Conclusions:

  • Direct-type FPDs offer enhanced spatial resolution, but their performance in terms of noise and DQE necessitates optimization.
  • Appropriate adjustments to exposure conditions and image processing algorithms are vital for maximizing the diagnostic utility of direct-type FPD systems.
  • The choice between direct and indirect FPDs involves a trade-off between spatial resolution and other image quality metrics, requiring tailored clinical protocols.