Diyabetik Ayak: Diyabetik Ayakta Görüntüleme Yöntemleri
Özet
Diyabetik ayak, diyabetes mellitusun en ciddi komplikasyonlarından biri olup erken tanı ve çok disiplinli yaklaşım gerektirir. Tanısal görüntülemede temel amaç, osteomiyelit ile nöropatik osteoartropati ayrımını doğru yaparak amputasyon riskini azaltmaktır. İlk değerlendirmede kolay ulaşılabilir ve ucuz olan direkt radyografi tercih edilir; bu yöntem kemik anormalliklerini, yumuşak dokudaki gaz ve yabancı cisimleri saptamada etkilidir ancak erken evrelerde duyarlılığı düşüktür. Ultrasonografi (US), periferik arter hastalığının (PAH) erken teşhisinde, vasküler haritalamada ve apse gibi yumuşak doku enfeksiyonlarının hızlı değerlendirilmesinde önemli rol oynar. Manyetik Rezonans Görüntüleme (MRG), yüksek doku çözünürlüğü sayesinde kemik iliği ödemini, yumuşak doku tutulumlarını gösteren ve osteomiyelit ile nöropatik artropati ayrımında en üstün olan altın standart yöntemdir. Bilgisayarlı tomografi (BT) ise kemik erozyonlarını ve sklerozu değerlendirmede kullanılır. Kritik ayak iskemisinde diz altı arterlerdeki darlık ve tıkanıklıkları saptamak için Doppler US, BT/MR anjiyografi ve konvansiyonel anjiyografi gibi yöntemlerden yararlanılır; revaskülarizasyon planlanan hastalarda anjiyografi kritik önem taşır. Erken teşhis ve uygun tedavi komplikasyonları önlemede hayatidir.
Diabetic foot is one of the most serious complications of diabetes mellitus, requiring early diagnosis and a multidisciplinary approach. The primary goal in diagnostic imaging is to differentiate between osteomyelitis and neuropathic osteoarthropathy accurately, thereby reducing the risk of amputation. Direct radiography, which is easily accessible and inexpensive, is preferred in the initial evaluation; this method is effective in detecting bone abnormalities, soft tissue gas, and foreign bodies, but its sensitivity is low in the early stages. Ultrasonography (US) plays an important role in the early detection of peripheral arterial disease (PAD), vascular mapping, and rapid evaluation of soft tissue infections such as abscesses. Magnetic Resonance Imaging (MRI) is the gold standard method that is superior in differentiating between osteomyelitis and neuropathic arthropathy, as it clearly demonstrates bone marrow edema and soft tissue involvement thanks to its high tissue resolution. Computed tomography (CT) is used to evaluate bone erosions and sclerosis. To detect stenoses and occlusions in the infrapopliteal arteries in critical foot ischemia, methods such as Doppler US, CT/MR angiography, and conventional angiography are utilized; angiography is of critical importance in patients for whom revascularization is planned. Early diagnosis and appropriate treatment are vital in preventing complications.
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