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التصوير الإلستوجرافي بالرنين المغناطيسي (M … التصوير الإلستوجرافي بالرنين المغناطيسي (MRE ) هو تقنية تصوير طبي غير جراحية تقيس صلابة الأنسجة الرخوة عن طريق توليد موجات القص في الأنسجة ، وتصوير انتشارها باستخدام التصوير بالرنين المغناطيسي ، ومعالجة الصور لإنشاء خريطة صلابة (مخطط إيلاستوجرام ). إنها واحدة من أكثر تقنيات التصوير المرنة شيوعًا. تم وصف التصوير بالرنين المغناطيسي لأول مرة من قبل Muthupillai et al. في عام 1995. نظرًا لأن الأنسجة المريضة غالبًا ما تكون أكثر صلابة من الأنسجة الطبيعية المحيطة ، فقد تم تطبيق التصوير بالرنين المغناطيسي لتصور مجموعة متنوعة من عمليات المرض التي تؤثر على تصلب الأنسجة في الكبد والثدي والدماغ والقلب والعضلات الهيكلية . على سبيل المثال ، أورام الثدي أصعب بكثير من أنسجة الغدد الليفية السليمة. التصوير بالرنين المغناطيسي يشبه الجس . ومع ذلك ، في حين أن الجس هو أسلوب نوعي يقوم به الأطباء ، فإنMRE هي تقنية كمية يتم إجراؤها مع أخصائي الأشعة . تقنية كمية يتم إجراؤها مع أخصائي الأشعة .
, Magnetic resonance elastography (MRE) is a … Magnetic resonance elastography (MRE) is a form of elastography that specifically leverages MRI to quantify and subsequently map the mechanical properties (elasticity or stiffness) of soft tissue. First developed and described at Mayo Clinic by Muthupillai et al. in 1995, MRE has emerged as a powerful, non-invasive diagnostic tool, namely as an alternative to biopsy and serum tests for staging liver fibrosis. Diseased tissue (e.g. a breast tumor) is often stiffer than the surrounding normal (fibroglandular) tissue, providing motivation to assess tissue stiffness. This principle of operation is the basis for the longstanding practice of palpation, which, however, is limited (except at surgery) to superficial organs and pathologies, and by its subjective, qualitative nature, depending on the skill and touch sensitivity of the practitioner. Conventional imaging techniques of CT, MRI, US, and nuclear medicine are unable to offer any insight on the elastic modulus of soft tissue. MRE, as a quantitative method of assessing tissue stiffness, provides reliable insight to visualize a variety of disease processes which affect tissue stiffness in the liver, brain, heart, pancreas, kidney, spleen, breast, uterus, prostate, and skeletal muscle. MRE is conducted in three steps: first, a mechanical vibrator is used on the surface of the patient's body to generate shear waves that travel into the patient's deeper tissues; second, an MRI acquisition sequence measures the propagation and velocity of the waves; and finally this information is processed by an inversion algorithm to quantitatively infer and map tissue stiffness in 3-D. This stiffness map is called an elastogram, and is the final output of MRE, along with conventional 3-D MRI images as shown on the right.onal 3-D MRI images as shown on the right.
, La risonanza magnetica elastografica (o el … La risonanza magnetica elastografica (o elastografia a risonanza magnetica) è una tecnica di imaging biomedico non invasiva che misura le proprietà meccaniche (rigidità) dei tessuti biologici molli facendo penetrare onde di taglio e ricostruendo la loro propagazione utilizzando la risonanza magnetica. Ciò può essere importate per formulare una diagnosi poiché i tessuti malati sono spesso più rigidi rispetto al normale tessuto circostante. Per esempio, i tumori della mammella sono molto più duri dei tessuti fibroglandolare sano. Questa caratteristica viene utilizzata per lo screening e la diagnosi di molte malattie. L'elastografia a risonanza magnetica funziona utilizzando un'onda a gradiente aggiuntiva nella sequenza di impulsi delle scansione a risonanza magnetica. Le onde di taglio vengono generate da un trasduttore elettromeccanico posto sulla superficie della cute. Questa tecnica venne introdotta per la prima volta da Muthupillai et al. nel 1995 e oggi, 2018, è studiata per essere utilizzatq per una moltitudine di malattie che influenzano la rigidità del tessuto. Viene comunemente utilizzata clinicamente per la valutazione della fibrosi del fegato.r la valutazione della fibrosi del fegato.
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Magnetic resonance elastography of the bra … Magnetic resonance elastography of the brain. A T1 weighted anatomical image is shown in the top-left, and the corresponding T2 weighted image from the MRE data is shown in the bottom-left. The wave image used to make the elastogram is shown in the top-right, and the resulting elastogram is in the bottom-right.sulting elastogram is in the bottom-right.
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التصوير الإلستوجرافي بالرنين المغناطيسي (M … التصوير الإلستوجرافي بالرنين المغناطيسي (MRE ) هو تقنية تصوير طبي غير جراحية تقيس صلابة الأنسجة الرخوة عن طريق توليد موجات القص في الأنسجة ، وتصوير انتشارها باستخدام التصوير بالرنين المغناطيسي ، ومعالجة الصور لإنشاء خريطة صلابة (مخطط إيلاستوجرام ). إنها واحدة من أكثر تقنيات التصوير المرنة شيوعًا.احدة من أكثر تقنيات التصوير المرنة شيوعًا.
, La risonanza magnetica elastografica (o el … La risonanza magnetica elastografica (o elastografia a risonanza magnetica) è una tecnica di imaging biomedico non invasiva che misura le proprietà meccaniche (rigidità) dei tessuti biologici molli facendo penetrare onde di taglio e ricostruendo la loro propagazione utilizzando la risonanza magnetica. Ciò può essere importate per formulare una diagnosi poiché i tessuti malati sono spesso più rigidi rispetto al normale tessuto circostante. Per esempio, i tumori della mammella sono molto più duri dei tessuti fibroglandolare sano. Questa caratteristica viene utilizzata per lo screening e la diagnosi di molte malattie.screening e la diagnosi di molte malattie.
, Magnetic resonance elastography (MRE) is a … Magnetic resonance elastography (MRE) is a form of elastography that specifically leverages MRI to quantify and subsequently map the mechanical properties (elasticity or stiffness) of soft tissue. First developed and described at Mayo Clinic by Muthupillai et al. in 1995, MRE has emerged as a powerful, non-invasive diagnostic tool, namely as an alternative to biopsy and serum tests for staging liver fibrosis.nd serum tests for staging liver fibrosis.
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التصوير الإلستوجرافي بالرنين المغناطيسي
, Magnetic resonance elastography
, Risonanza magnetica elastografica
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