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مقياس امتصاص الأشعة السينية ثنائي البواعث والذي يرمز له (DXA) اختصارا للمصطلح الإنجليزي (Dual-emission X-ray absorptiometry) هو وسيلة لقياس كثافة معادن العظم، حيث توجه حزمتي أشعة إكس ذات مستوى طاقة مختلف على عظام المريض، وبعد طرح مقدار امتصاص الأنسجة الرخوة للأشعة يكون من الممكن تحديد مقدار كثافة معادن العظام من تحديد كمية امتصاص كل حزمة أشعة من قبل العظم. تعتبر طريقة DXA هي من أكثر الطرق انتشارا في قياس كثافة العظام. تستخدم طريقة DXA عادة في تحليل ومتابعة تخلخل العظام، وينبغي عدم الخلط بين هذه الطريقة ومسح العظام النووي، والتي تكون حساسة لأمراض تغذية معينة تظهر في العظام التي تحاول التعافي من العدوى أو الكسور أو الأورام. (ar) Die Dual-Röntgen-Absorptiometrie (dual energy X-ray absorptiometry DXA, früher auch DEXA, deutsch Doppelröntgenabsorptiometrie) ist ein röntgendiagnostisches Verfahren zur Bestimmung der . Sie wird von einigen Autoren als eine Referenzmethode (Goldstandard) in diesem Bereich bezeichnet. (de) Dual-energy X-ray absorptiometry (DXA, or DEXA) is a means of measuring bone mineral density (BMD) using spectral imaging. Two X-ray beams, with different energy levels, are aimed at the patient's bones. When soft tissue absorption is subtracted out, the bone mineral density (BMD) can be determined from the absorption of each beam by bone. Dual-energy X-ray absorptiometry is the most widely used and most thoroughly studied bone density measurement technology. The DXA scan is typically used to diagnose and follow osteoporosis, as contrasted to the nuclear bone scan, which is sensitive to certain metabolic diseases of bones in which bones are attempting to heal from infections, fractures, or tumors. It is also sometimes used to assess body composition. (en) Dual Energi Absorptimetri adalah sebuah cara yang terbaik untuk memeriksa kepadatan pada tulang manusia. Menurut kamus kesehatan Dual Energi Absorptimetri adalah jenis pengujian yang menggunakan sinar-X untuk mengukur kepadatan tulang. Tes ini merupakan metode yang lebih baik, karena menggunakan yang lengkap, apabila akan melakukan menggunakan tes ini sebelumnya lakukan tes kepadatan tulang menggunakan teknik apapun sebelumnya. Karena penafsiran pengukuran kepadatan tulang dan penentuan perlu tidaknya pengobatan mungkin jauh lebih penting ketimbang keputusan mengenai metode tes kepadatan tulang yang harus dijalani ini, apabila pasien yang menjalani pengukuran peripheral dan hasil mengenai risiko bahwa pasien terkena osteoporosis meragukan, maka pasien harus melanjutkan dengan pengukuran tulang pinggul dan tulang belakang menggunakan central DXA untuk memastikan diagonosisnya.Tes kepadatan tulang biasanya melaporkan hasil pasien berupa perbandingan dengan rata-rata orang sehat yang berusia dan berjenis kelamin sama dengan pasien (Nilai-Z) serta dengan rata-rata orang muda normal yang sehat (Nilai-T). Dalam pengukuran massa dan densitas tulang hal perlu dilakukan dalam pemeriksaan tulang ini adalah sebagai berikut: 1. * SPA (Single Phon Absorptiometry). 2. * DPA (dual Photon Absorpatiometry). 3. * Dexa (dual energy X-ray Absorptiometry). 4. * Quantitative CT. (in) L'osteodensitometria (o assorbimetria bifotonica a raggi X) è un esame non invasivo per il paziente, tramite il quale viene calcolata la densità minerale ossea (DMO), che rispecchia il contenuto di calcio nell'osso e che risulta ridotta in presenza di osteoporosi. Non esiste una sintomatologia tale da permettere una facile diagnosi dell'osteoporosi; tramite la DMO è possibile quindi diagnosticare tale malattia prima dell'insorgenza di eventuali fratture, valutandone anche la gravità nel paziente. (it) Absorciometria bifotónica de raio X (português europeu) ou Absorciometria por raios-X com dupla energia (português brasileiro), (em inglês: Dual-energy X-ray absorptiometry, abreviado DXA ou DEXA) é um método de medição da densidade mineral óssea, na qual feixes de raio X com diferentes níveis de energia são emitidos para o corpo do paciente. Quando é subtraída a absorção pelo tecido mole, é possível determinar a densidade óssea a partir da absorção de cada raio pelo osso. É o método mais usado e mais estudado para a medição de densidade óssea, geralmente no diagnóstico e acompanhamento de osteoporose. (pt) |
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Die Dual-Röntgen-Absorptiometrie (dual energy X-ray absorptiometry DXA, früher auch DEXA, deutsch Doppelröntgenabsorptiometrie) ist ein röntgendiagnostisches Verfahren zur Bestimmung der . Sie wird von einigen Autoren als eine Referenzmethode (Goldstandard) in diesem Bereich bezeichnet. (de) L'osteodensitometria (o assorbimetria bifotonica a raggi X) è un esame non invasivo per il paziente, tramite il quale viene calcolata la densità minerale ossea (DMO), che rispecchia il contenuto di calcio nell'osso e che risulta ridotta in presenza di osteoporosi. Non esiste una sintomatologia tale da permettere una facile diagnosi dell'osteoporosi; tramite la DMO è possibile quindi diagnosticare tale malattia prima dell'insorgenza di eventuali fratture, valutandone anche la gravità nel paziente. (it) Absorciometria bifotónica de raio X (português europeu) ou Absorciometria por raios-X com dupla energia (português brasileiro), (em inglês: Dual-energy X-ray absorptiometry, abreviado DXA ou DEXA) é um método de medição da densidade mineral óssea, na qual feixes de raio X com diferentes níveis de energia são emitidos para o corpo do paciente. Quando é subtraída a absorção pelo tecido mole, é possível determinar a densidade óssea a partir da absorção de cada raio pelo osso. É o método mais usado e mais estudado para a medição de densidade óssea, geralmente no diagnóstico e acompanhamento de osteoporose. (pt) مقياس امتصاص الأشعة السينية ثنائي البواعث والذي يرمز له (DXA) اختصارا للمصطلح الإنجليزي (Dual-emission X-ray absorptiometry) هو وسيلة لقياس كثافة معادن العظم، حيث توجه حزمتي أشعة إكس ذات مستوى طاقة مختلف على عظام المريض، وبعد طرح مقدار امتصاص الأنسجة الرخوة للأشعة يكون من الممكن تحديد مقدار كثافة معادن العظام من تحديد كمية امتصاص كل حزمة أشعة من قبل العظم. تعتبر طريقة DXA هي من أكثر الطرق انتشارا في قياس كثافة العظام. (ar) Dual-energy X-ray absorptiometry (DXA, or DEXA) is a means of measuring bone mineral density (BMD) using spectral imaging. Two X-ray beams, with different energy levels, are aimed at the patient's bones. When soft tissue absorption is subtracted out, the bone mineral density (BMD) can be determined from the absorption of each beam by bone. Dual-energy X-ray absorptiometry is the most widely used and most thoroughly studied bone density measurement technology. (en) Dual Energi Absorptimetri adalah sebuah cara yang terbaik untuk memeriksa kepadatan pada tulang manusia. Menurut kamus kesehatan Dual Energi Absorptimetri adalah jenis pengujian yang menggunakan sinar-X untuk mengukur kepadatan tulang. Tes ini merupakan metode yang lebih baik, karena menggunakan yang lengkap, apabila akan melakukan menggunakan tes ini sebelumnya lakukan tes kepadatan tulang menggunakan teknik apapun sebelumnya. Karena penafsiran pengukuran kepadatan tulang dan penentuan perlu tidaknya pengobatan mungkin jauh lebih penting ketimbang keputusan mengenai metode tes kepadatan tulang yang harus dijalani ini, apabila pasien yang menjalani pengukuran peripheral dan hasil mengenai risiko bahwa pasien terkena osteoporosis meragukan, maka pasien harus melanjutkan dengan pengukuran t (in) |
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مقياس امتصاص الأشعة السينية ثنائي البواعث (ar) Dual-energy X-ray absorptiometry (en) Dual-Röntgen-Absorptiometrie (de) Absorption biphotonique à rayons X (fr) Absorptimetri (in) Osteodensitometria (it) Absorciometria bifotónica de raio X (pt) |
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