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People need compression ultrasonography to diagnose their physical disorder which is happened for the deep thrombosis of the brain. There is contrast material which is used in this system so there are side effects and some limited availability which is happened in this test. It is happened mainly due to the invasive nature of the test. It is responsible for the non invasive test. Some non invasive methods are there to overcome the problem. The first one was Impedance plethysmography. It was accurate for the vein thrombosis in symptomatic patients. The test was proximal. It was less sensitive for the calf veins which are thrombi confined. This test is required to do several times. It is done almost five times over the two weeks. The patients who have normal test result should undergo these tests for the actual diagnosis. There are different studies which are done afterwards. They are efficient of the test procedure. It was further developed after reducing the number of tests which are repeated to three and then it was reduced to two tests. It was done with full safety assurance. It was emerged by the method which was non-invasive. It was used for the evaluation of the patients. It was done for the deep vein thrombosis which is clinically suspected. The test is popular and available. This procedure can be used within a single spot in the groin.compression ultrasonography is also used in the mid-popliteal fossa. Here clear images can be obtained. The images of the test are replicable. There is the case of the impedance plethysmography. It cannot evaluate the calf veins accurately so there is the need of the serial compression ultrasonography testing. There are few patients whose result of the compression ultrasonography will convert from the normal case to the abnormal case. Compression ultrasonography test should be repeated twice in all the patients who have an initial normal test result. It is inconvenient for the patients because this is laboured intensive and expensive. About The Author Lee Bond is a renowned radiology expert who has over 10 years of experience in the field, and another 10 as a regular surgeon.For more information, please visit compression ultrasonography.
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