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相关概念视频

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...
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...
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,...

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相关实验视频

Updated: May 11, 2026

gDNA Enrichment by a Transposase-based Technology for NGS Analysis of the Whole Sequence of BRCA1, BRCA2, and 9 Genes Involved in DNA Damage Repair
08:15

gDNA Enrichment by a Transposase-based Technology for NGS Analysis of the Whole Sequence of BRCA1, BRCA2, and 9 Genes Involved in DNA Damage Repair

Published on: October 6, 2014

通过磁共振成像,超声波,乳房影像和临床乳房检查监测BRCA1和BRCA2突变载体.

Ellen Warner1, Donald B Plewes, Kimberley A Hill

  • 1Division of Medical Oncology, Department of Medicine, Sunnybrook and Women's College Health Sciences Centre and University of Toronto, Ontario, Canada. ellen.warner@sw.ca

JAMA
|September 16, 2004
PubMed
概括

磁共振成像 (MRI) 与乳房影像,超声波或临床乳房检查 (CBE) 相比,在具有BRCA1或BRCA2突变的女性中检测乳腺癌的灵敏度更高. 需要进一步的研究来确定MRI监测是否可以降低高风险人群的乳腺癌死亡率.

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相关实验视频

Last Updated: May 11, 2026

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科学领域:

  • 在瘤学瘤学.
  • 放射学 放射学是一门学科.
  • 遗传学 是一个遗传学.

背景情况:

  • 目前对BRCA1/BRCA2突变载体的乳腺癌监测 (乳腺造影,CBE) 经常可以检测到晚期的瘤.
  • 磁共振成像 (MRI) 和超声波可以提高早期乳腺癌检测.

研究的目的:

  • 为了比较四种乳腺癌监测方法的敏感性和特异性:MRI,乳房影像,超声波和CBE.
  • 为了评估这些方法在妇女遗传性乳腺癌易感性由于BRCA1或BRCA2突变.

主要方法:

  • 一项监测研究涉及236名加拿大妇女 (25-65岁) 携带BRCA1/BRCA2突变.
  • 每年通过MRI,乳房扫描和超声波进行查,并通过半年一次的临床乳房检查 (CBE) 进行补充.

主要成果:

  • 磁力共振扫描检测到77%的癌症,明显高于乳房扫描 (36%),超声波 (33%) 或CBE (9.1%).
  • 在各个模式中,MRI表现出最高的灵敏度 (77%) 和特异性 (95.4%).
  • 综合查方式显示95%的灵敏度,而乳房影像和CBE组合的45%.

结论:

  • 对于检测BRCA1/BRCA2突变载体中的乳腺癌,MRI比其他测试方法更为敏感.
  • 包括MRI在内的监测方案对降低高风险女性乳腺癌死亡率的影响需要进一步调查.