Jove
Visualize
Contact Us

Related Concept Videos

Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

945
Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
945
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

393
Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
393
Distance Corrections01:15

Distance Corrections

303
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
303
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

533
Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
533
Power Factor Correction01:20

Power Factor Correction

563
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
563
Trial and Error and Algorithm01:12

Trial and Error and Algorithm

435
A problem-solving strategy is a plan of action used to find a solution. Different strategies have distinct action plans. Trial and error involves trying different solutions until one works. For instance, to fix a broken printer, you might check ink levels, ensure the paper tray isn't jammed, and verify the printer's connection to your laptop. This method can be time-consuming but is commonly used. Thomas Edison, for example, used trial and error to find a suitable filament for the light...
435

You might also read

Related Articles

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

Sort by
Same author

Hybrid deep learning models for diabetic retinopathy stage classification using fundus images.

Journal of diabetes and metabolic disorders·2026
Same author

Spinal nerves as landmarks for spinal cord segment delineation: cervical cross-sectional area measurement in healthy subjects.

European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·2026
Same author

New Contrast Enhancement Method for Multiple Sclerosis Lesion Detection.

Journal of digital imaging·2022
Same author

Detection of COVID-19 from CT and Chest X-ray Images Using Deep Learning Models.

Annals of biomedical engineering·2022
Same author

COVID-19 detection in CT and CXR images using deep learning models.

Biogerontology·2022
Same author

Deep Convolutional Encoder-Decoder algorithm for MRI brain reconstruction.

Medical & biological engineering & computing·2020
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 Experiment Video

Updated: Feb 15, 2026

Contrast Enhanced Vessel Imaging using MicroCT
05:50

Contrast Enhanced Vessel Imaging using MicroCT

Published on: January 27, 2011

13.2K

A New Adaptive Gamma Correction Based Algorithm Using DWT-SVD for Non-Contrast CT Image Enhancement.

Fathi Kallel, Ahmed Ben Hamida

    IEEE Transactions on Nanobioscience
    |January 25, 2018
    PubMed
    Summary

    A new adaptive gamma correction algorithm using discrete wavelet transform with singular-value decomposition (DWT-SVD) enhances dark medical images. This DWT-SVD-AGC method improves contrast quality in CT scans, outperforming existing techniques.

    More Related Videos

    In vivo Imaging of Optic Nerve Fiber Integrity by Contrast-Enhanced MRI in Mice
    11:38

    In vivo Imaging of Optic Nerve Fiber Integrity by Contrast-Enhanced MRI in Mice

    Published on: July 22, 2014

    13.9K
    Area-based Image Analysis Algorithm for Quantification of Macrophage-fibroblast Cocultures
    07:05

    Area-based Image Analysis Algorithm for Quantification of Macrophage-fibroblast Cocultures

    Published on: February 15, 2022

    3.0K

    Related Experiment Videos

    Last Updated: Feb 15, 2026

    Contrast Enhanced Vessel Imaging using MicroCT
    05:50

    Contrast Enhanced Vessel Imaging using MicroCT

    Published on: January 27, 2011

    13.2K
    In vivo Imaging of Optic Nerve Fiber Integrity by Contrast-Enhanced MRI in Mice
    11:38

    In vivo Imaging of Optic Nerve Fiber Integrity by Contrast-Enhanced MRI in Mice

    Published on: July 22, 2014

    13.9K
    Area-based Image Analysis Algorithm for Quantification of Macrophage-fibroblast Cocultures
    07:05

    Area-based Image Analysis Algorithm for Quantification of Macrophage-fibroblast Cocultures

    Published on: February 15, 2022

    3.0K

    Area of Science:

    • Medical Imaging
    • Image Processing
    • Computer Vision

    Background:

    • Medical image quality, particularly CT scans, is often degraded by poor contrast.
    • Low contrast in medical images hinders accurate diagnosis and interpretation.
    • Contrast enhancement techniques are crucial for improving the visibility of anatomical structures.

    Purpose of the Study:

    • To propose an advanced, adaptive, and simple algorithm for enhancing dark medical images.
    • To address the challenge of poor contrast in CT scans using a novel approach.
    • To improve the diagnostic utility of medical images through enhanced contrast.

    Main Methods:

    • The proposed method utilizes adaptive gamma correction combined with discrete wavelet transform (DWT) and singular-value decomposition (SVD).
    • The algorithm decomposes images into sub-bands using DWT, enhances the low-low (LL) sub-band via SVD, and applies adaptive gamma correction based on image classification.
    • Reconstruction is performed using inverse DWT with the enhanced LL sub-band and original high-frequency sub-bands.

    Main Results:

    • The DWT-SVD-AGC algorithm demonstrated superior performance in enhancing contrast for various non-contrast CT medical images.
    • Quantitative and qualitative evaluations confirmed the effectiveness of the proposed method compared to state-of-the-art techniques.
    • The adaptive gamma correction effectively adjusted intensity distributions for improved image clarity.

    Conclusions:

    • The proposed DWT-SVD-AGC algorithm is an effective solution for enhancing dark medical images with poor contrast.
    • This technique offers significant improvements in image quality for CT scans, aiding in better medical diagnosis.
    • The adaptive nature of the algorithm allows for tailored enhancement based on image characteristics.