純粋な管道性癌の診断のためのMRI in situ:将来的な観察研究
Christiane K Kuhl1, Simone Schrading, Heribert B Bieling
1Department of Radiology, University of Bonn, Bonn, Germany. kuhl@uni-bonn.de
Lancet (London, England)
|August 19, 2007
まとめ
乳房MRIは,マモグラフィーと比較して,特に高度のDCISの場合,乳房管内がん in situ (DCIS) の検出を大幅に改善します. この強化されたイメージング機能は,乳がんの早期診断と侵襲性疾患の予防に役立ちます.
科学分野:
- 放射線学 放射線学
- 腫瘍学 腫瘍学
- 乳房画像検査について
背景:
- 乳がんの早期診断,特に管内がん in situ (DCIS) のような管内がんの段階は,侵襲性疾患の予防に不可欠です.
- マンモグラフィは標準的なスクリーニングツールですが,DCISを検出する際の感度は限られています.
研究 の 目的:
- マンモグラフィーと乳房MRIの診断感度を比較して,管道性癌インシトゥ (DCIS) の検出を図る.
- 各イメージング方式によって検出されたDCISの特徴を調査する.
主な方法:
- マンモグラフィーとMRIの両方を受けた,手術で純粋なDCISが確認された167人の女性の遡及的分析.
- 異なる放射線科医によるマンモグラフィとMRIスキャンの独立した評価.
- 各方法によって特定されたDCISの検出率の比較とリスクプロファイルの分析.
主要な成果:
- MRIは,症例の92%でDCISを検出し,マンモグラフィー (56%) よりも著しく高かった.
- マンモグラフィーは,高度のDCIS症例の48%を逃したが,MRIはこれらの病変の98%を検出した.
- マンモグラフィーで検出されたDCISとMRIのみで検出されたDCISの間では,患者のリスクプロファイルにおいて有意な違いは観察されなかった.
結論:
- 乳房MRIは,マンモグラフィと比較してDCISの診断に優れた感度を示しています.
- MRIは,高核度のDCISを検出するのに特に価値があり,乳がんの早期管理を改善する可能性があります.
関連する概念動画
01:24Magnetic 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...
01:30Radiological 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...
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...
01:13Radiological 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...
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...
01:27Imaging 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,...