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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...
X-ray Imaging01:24

X-ray Imaging

German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...
Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and the...
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...
Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET

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X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
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X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Radiation dose reduction in computed tomography: techniques and future perspective.

Lifeng Yu1, Xin Liu, Shuai Leng

  • 1Department of Radiology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.

Imaging in Medicine
|February 7, 2012
PubMed
Summary
This summary is machine-generated.

Computed tomography (CT) offers significant patient benefits, but radiation dose management is crucial to mitigate cancer risks. This article details technical strategies for optimizing CT radiation dose across various applications.

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Area of Science:

  • Radiology
  • Medical Physics
  • Radiation Oncology

Background:

  • Computed tomography (CT) use has increased exponentially, raising concerns about potential cancer induction risks.
  • Despite benefits, minimizing radiation exposure is essential for patient safety in medical imaging.
  • Maintaining the lowest reasonably achievable radiation dose is paramount for diagnostic imaging.

Purpose of the Study:

  • To summarize general technical strategies for radiation dose management in CT.
  • To discuss specific dose-management strategies for pediatric, cardiac, dual-energy, CT perfusion, and interventional CT.
  • To present future perspectives on CT dose reduction.

Main Methods:

  • Review of general technical strategies for CT radiation dose management.
  • Specific discussion of dose management in pediatric CT, cardiac CT, dual-energy CT, CT perfusion, and interventional CT.
  • Exploration of future trends and technologies for dose reduction.

Main Results:

  • Effective radiation dose management in CT relies on a combination of technical strategies.
  • Tailored approaches are necessary for different CT applications, including specialized protocols for pediatric and interventional procedures.
  • Ongoing research and technological advancements are key to further reducing CT radiation doses.

Conclusions:

  • Radiation dose management is a critical aspect of responsible CT utilization.
  • Implementing low-dose strategies across diverse CT applications is vital for patient safety.
  • Future innovations will continue to enhance CT's safety profile by reducing radiation exposure.