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Dr K K Aggarwal

Repeated CT scans are risky to life

By Dr K K Aggarwal
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CT scan involves x ray radiation and can be harmful to the body. Unless it is essential for any diagnostic procedure one should not undergo repeated CT scans on annual basis for diagnosis of certain cancers. On the other hand ultrasound and MRI are safe and carry no radiations. Experts have said that MRI and CT scan are not interchangeable diagnostic procedures. Contrast imaging which was earlier used with x ray is now available for ultrasound and echocardiography. Thirty percent of patients do not have a good heart window of routine echocardiography. In these cases using special ultrasound contrast can prevent angiography and other cath procedures.

MR–Guided Focused Ultrasound for Knee Osteoarthritis

By Dr K K Aggarwal
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Recently, local bone denervation by MR–guided focused ultrasound has been demonstrated as a promising tool for pain palliation of bone metastases. A study in BMC Musculoskelet Disord 2013;14(267) has shown the safety and efficacy of MR–guided focused ultrasound treatment in osteoarthritis. Significant increase of pressure pain thresholds on treated area showed successful denervation effect on the nociceptive nerve terminals. MR–guided focused ultrasound is a promising and innovative procedure for noninvasive pain management of knee OA.