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Related Concept Videos

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...
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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...
Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...

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Related Experiment Video

Updated: Jun 20, 2026

Rapid Setup of Tissue Microarray and Tiled Area Imaging on the Multiplexed Ion Beam Imaging Microscope Using the Tile/SED/Array Interface
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Published on: September 15, 2023

A scheme for multisource interior tomography.

Ge Wang1, Hengyong Yu, Yangbo Ye

  • 1Biomedical Imaging Division, VT-WFU School of Biomedical Engineering and Sciences, Virginia Tech., Blacksburg, Virginia 24061, USA. wangg@vt.edu

Medical Physics
|September 15, 2009
PubMed
Summary
This summary is machine-generated.

Multisource interior tomography enables ultrafast imaging by reconstructing small regions of interest (ROI) with reduced radiation dose. This novel approach significantly shortens data acquisition time, minimizing motion blurring in medical imaging.

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Rapid Setup of Tissue Microarray and Tiled Area Imaging on the Multiplexed Ion Beam Imaging Microscope Using the Tile/SED/Array Interface
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Area of Science:

  • Medical Imaging
  • Radiology
  • Image Reconstruction

Background:

  • Conventional x-ray computed tomography (CT) has limitations in temporal resolution due to scanning time.
  • Rapid dynamics in objects can lead to inadequate image reconstruction in standard CT.
  • Existing methods struggle to capture fast-moving biological processes effectively.

Purpose of the Study:

  • To introduce a novel multisource interior tomography scheme for ultrafast imaging.
  • To enable high-temporal-resolution reconstruction of a small region of interest (ROI).
  • To reduce radiation dose in CT imaging.

Main Methods:

  • Irradiating a specific ROI in parallel using narrow x-ray beams from multiple source-detector pairs.
  • Acquiring projection data specifically for the ROI.
  • Applying interior tomography principles for image reconstruction.

Main Results:

  • Successful interior reconstruction of in vivo lung CT data was achieved.
  • The radiation dose was significantly reduced, proportional to the ROI size.
  • The method demonstrated potential for ultrafast imaging with reduced motion blurring.

Conclusions:

  • Multisource interior tomography offers a viable solution for ultrafast imaging.
  • This technique allows for rapid data acquisition and motion suppression.
  • It presents a promising method for reducing radiation exposure in CT scans.