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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:
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...
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,...
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,...
Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
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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Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
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Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla

Published on: February 19, 2021

MRI and surveillance.

Adil Ouzzane1, Philippe Puech, Arnauld Villers

  • 1Department of Urology, Hospital Huriez, University Lille Nord de France, Lille, France.

Current Opinion in Urology
|March 6, 2012
PubMed
Summary
This summary is machine-generated.

Multiparametric MRI (mp-MRI) improves prostate cancer detection, especially anterior tumors, aiding active surveillance selection. This advanced imaging can reduce reclassification rates and potentially avoid repeat biopsies for low-risk patients.

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Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring
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Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

Published on: December 9, 2010

Area of Science:

  • Urology
  • Radiology
  • Oncology

Background:

  • Current diagnostic methods for prostate cancer active surveillance have limitations in accurately identifying insignificant tumors.
  • A significant percentage (20-30%) of men on active surveillance are reclassified due to underdiagnosis of significant cancer, particularly anteriorly located tumors.

Purpose of the Study:

  • To review recent advances in multiparametric MRI (mp-MRI) for prostate cancer.
  • To evaluate the role of mp-MRI in selecting and monitoring patients eligible for active surveillance.

Main Methods:

  • Review of current literature on mp-MRI in prostate cancer diagnosis and management.
  • Analysis of mp-MRI's accuracy in detecting and staging significant prostate cancers, including anteriorly located ones.
  • Assessment of mp-MRI's negative predictive value for avoiding biopsies in active surveillance.

Main Results:

  • mp-MRI demonstrates high accuracy for significant cancer detection and staging, outperforming systematic biopsies, especially for anterior cancers.
  • Targeted biopsies guided by mp-MRI improve cancer detection and personalized risk stratification.
  • mp-MRI has a 95% negative predictive value, offering potential to avoid repeat biopsies during active surveillance.

Conclusions:

  • mp-MRI can enhance the selection of patients for active surveillance, reducing reclassification rates due to improved initial prognosis evaluation.
  • Incorporating mp-MRI into active surveillance criteria may lead to better patient management for low-risk prostate cancer.
  • While promising, mp-MRI implementation requires skilled personnel and may incur additional costs.