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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...
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...

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Related Experiment Video

Updated: May 30, 2026

Photoacoustic Cystography
09:49

Photoacoustic Cystography

Published on: June 11, 2013

Multiple passive element enriched photoacoustic computed tomography.

Steffen Resink1, Jithin Jose, Rene G H Willemink

  • 1Biomedical Photonic Imaging Group, MIRA Institute, Faculty of Science and Technology, University of Twente, PB 217, 7500AE, Enschede, The Netherlands.

Optics Letters
|August 3, 2011
PubMed
Summary

This study introduces a faster photoacoustic imaging method using multiple laser-induced ultrasound sources. This technique significantly reduces imaging time by capturing more views with fewer physical projections, enhancing practical applications.

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Integrated Photoacoustic, Ultrasound, and Angiographic Tomography (PAUSAT) for NonInvasive Whole-Brain Imaging of Ischemic Stroke
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Integrated Photoacoustic, Ultrasound, and Angiographic Tomography (PAUSAT) for NonInvasive Whole-Brain Imaging of Ischemic Stroke

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Three-dimensional Optical-resolution Photoacoustic Microscopy
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Three-dimensional Optical-resolution Photoacoustic Microscopy

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Related Experiment Videos

Last Updated: May 30, 2026

Photoacoustic Cystography
09:49

Photoacoustic Cystography

Published on: June 11, 2013

Integrated Photoacoustic, Ultrasound, and Angiographic Tomography (PAUSAT) for NonInvasive Whole-Brain Imaging of Ischemic Stroke
06:45

Integrated Photoacoustic, Ultrasound, and Angiographic Tomography (PAUSAT) for NonInvasive Whole-Brain Imaging of Ischemic Stroke

Published on: June 2, 2023

Three-dimensional Optical-resolution Photoacoustic Microscopy
08:31

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

Area of Science:

  • Biomedical Optics
  • Photoacoustic Imaging
  • Ultrasound Physics

Background:

  • Photoacoustic tomography (PAT) images ultrasound transmission parameters using laser-induced ultrasound.
  • Current PAT methods require extensive measurement times due to numerous physical projections.
  • Long acquisition times limit the practical application of PAT.

Purpose of the Study:

  • To develop and validate a novel approach for accelerating photoacoustic tomographic imaging.
  • To reduce the overall imaging time without compromising image quality.
  • To enable hybrid imaging of ultrasound transmission parameters and photoacoustic data.

Main Methods:

  • Utilized a plurality of spatially distributed external absorbers to generate multiple laser-induced ultrasound sources.
  • Interrogated the object from multiple angles simultaneously within a limited projection scenario.
  • Integrated ultrasound transmission parameter imaging with photoacoustic imaging.

Main Results:

  • Achieved a significant reduction in the required number of rotation angles or physical projections.
  • Demonstrated considerable reduction in imaging time.
  • Maintained image quality without significant degradation.

Conclusions:

  • The proposed method significantly accelerates photoacoustic tomographic imaging.
  • This approach enhances the practical applicability of hybrid imaging techniques.
  • It offers a more efficient way to image ultrasound transmission parameters alongside photoacoustic data.