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Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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:
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Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Brain Imaging01:14

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).

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Tracking the Mammary Architectural Features and Detecting Breast Cancer with Magnetic Resonance Diffusion Tensor Imaging
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3D imaging using magnetic resonance tomosynthesis (MRT) technique.

Min-Oh Kim1, Sang-Young Zho, Dong-Hyun Kim

  • 1Department of Electrical and Electronic Engineering, Yonsei University, Seodaemun-gu, Seoul 120-749, South Korea.

Medical Physics
|August 17, 2012
PubMed
Summary
This summary is machine-generated.

Magnetic Resonance Tomosynthesis (MRT) offers an alternative 3D imaging approach. This novel method, adapted from x-ray tomosynthesis, improves image quality in low signal-to-noise ratio scenarios.

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Area of Science:

  • Medical Imaging
  • Radiology
  • Magnetic Resonance Imaging

Background:

  • Three-dimensional (3D) imaging is crucial in medical diagnostics.
  • Conventional Magnetic Resonance (MR) imaging techniques have limitations in certain applications.
  • X-ray tomosynthesis provides a 3D imaging approach with specific reconstruction methods.

Purpose of the Study:

  • To introduce Magnetic Resonance Tomosynthesis (MRT) as an alternative 3D MR imaging technique.
  • To adapt x-ray tomosynthesis principles for MR imaging applications.
  • To evaluate the feasibility and performance of MRT.

Main Methods:

  • Acquisition of variable angle tilted-projection images using a multiple-oblique view (MOV) pulse sequence.
  • Reconstruction of tomographic images using methods adapted from x-ray tomosynthesis.
  • Modification of the reconstruction algorithm for practical MR imaging scenarios and incorporation of reformatting processes.

Main Results:

  • Simulations revealed anisotropic resolution features and partial slice-direction blurring.
  • Phantom and in vivo experiments demonstrated improved image quality in low signal-to-noise ratio (SNR) conditions.
  • Reformatted reconstruction enhanced spatial resolution and reduced slice profile imperfections.

Conclusions:

  • Magnetic Resonance Tomosynthesis (MRT) successfully generates adequate 3D images from MOV data.
  • Established tomosynthesis reconstruction algorithms are adaptable for MRT.
  • MRT shows potential for various MR imaging applications, particularly in low SNR environments.