CT Scan of limbs with contrast, including CT angiography, is a specialized imaging procedure that provides detailed visualization of blood vessels and soft tissues in the arms and legs. This imaging technique uses contrast dye to highlight arteries and veins, allowing for precise detection of vascular conditions such as arterial blockages, peripheral artery disease, aneurysms, circulation problems, and vascular malformations. CT angiography helps diagnose these conditions by creating high-resolution, 3D images of the limb’s vascular structures, aiding in accurate diagnosis and treatment planning.
Preparation involves patient fasting for a few hours and assessing kidney function with a creatinine test due to the contrast dye. The scan is performed by injecting contrast through an IV catheter, then the CT machine captures detailed images as the contrast travels through blood vessels. The 3D images can identify arterial narrowing, blood clots, and other vascular abnormalities in the femoral, popliteal, peroneal arteries of the lower limbs and comparable vessels in the upper limbs. This non-invasive technique is faster and safer than traditional catheter angiography and helps guide interventions like angioplasty or surgery. Patient positioning and removal of metallic objects are essential to avoid artifacts and improve image quality.
CT angiography of the limbs is essential for diagnosing symptoms like leg pain, swelling, or poor circulation. It can also evaluate blood vessels pre- or post-surgery for complications or treatment efficacy. This scan is especially important for patients with risk factors for vascular disease, helping monitor and manage their condition effectively.
In summary, CT limb angiography with contrast is a fast, non-invasive diagnostic tool providing accurate insights into vascular health, helping tailor interventions for limb vascular diseases efficiently and safely.