In the context of X-ray imaging and radiation therapy, SSD stands for Source-Skin Distance.
This refers to the distance between the source of radiation (the X-ray tube) and the surface of the patient's skin. It's a critical parameter in radiology and radiation oncology because it directly impacts the radiation dose received by the patient.
Why is SSD important?
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Dose Calculation: The radiation dose decreases as the distance from the source increases (inverse square law). Accurate SSD measurement is essential for calculating the correct dose to be delivered to the target tissue.
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Treatment Planning: In radiation therapy, SSD is a key factor considered during treatment planning to ensure the tumor receives the prescribed dose while minimizing exposure to healthy tissues.
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Image Quality: While less direct, SSD also influences image magnification and sharpness in diagnostic radiology.
Therefore, SSD is a fundamental concept ensuring accuracy and safety in both diagnostic and therapeutic applications of X-rays.
