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相关概念视频

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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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...
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Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

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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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Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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

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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...
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Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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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...
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Positron Emission Tomography01:29

Positron Emission Tomography

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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...
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Protocol for the Evaluation of MRI Artifacts Caused by Metal Implants to Assess the Suitability of Implants and the Vulnerability of Pulse Sequences
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在MRI上的轨道人工物

Khizar Rana1, Valerie Juniat1, Sandy Patel2

  • 1Department of Ophthalmology & Visual Sciences, South Australian Institute of Ophthalmology, University of Adelaide, North Terrace, South Australia, Australia.

Ophthalmic plastic and reconstructive surgery
|June 8, 2023
PubMed
概括
此摘要是机器生成的。

轨道MRI人工物,特别是脂肪抑制失败,可以模仿轨道疾病,导致误诊. 了解这些文物对于准确的放射学报告和避免不必要的程序至关重要.

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科学领域:

  • 放射学 放射学是一门学科.
  • 眼科医生 眼科 眼科
  • 医疗成像医学成像

背景情况:

  • 轨道磁共振成像 (MRI) 对于诊断各种轨道病理至关重要.
  • 磁力共振成像中的人工物可以显著影响诊断的准确性.
  • 对文物的误解可能导致错误的诊断和不必要的干预.

研究的目的:

  • 为了描述轨道MRI上的文物.
  • 为了突出文物导致放射学报告不正确的情况.
  • 为了告知临床医生关于轨道MRI的潜在诊断陷.

主要方法:

  • 在轨道核磁共振 (MRI) 上有器件的患者的回顾性图表审查.
  • 收录标准:导致放射学报告不正确的文物.
  • 收集的数据:患者人口统计,MRI序列,文物特征,错误诊断和原因.

主要成果:

  • 分析了7名患者 (3名男性,中位数年龄为61岁).
  • 五件文物是脂肪抑制失败的结果.
  • 四个病例被误诊为炎症变化,一个是瘤透;六个文物位于下层轨道.

结论:

  • 低轨道的脂肪抑制失败人工物可以模仿炎症或瘤轨道疾病.
  • 这些文物可能导致错误诊断和潜在的不必要的调查,如轨道活检.
  • 临床医生必须了解轨道MRI器件,以防止误诊.