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Ultrasound Video Lecture | Science Class 9

80 videos|352 docs|97 tests

FAQs on Ultrasound Video Lecture - Science Class 9

1. What is an ultrasound?
Ans. An ultrasound is a medical imaging technique that uses high-frequency sound waves to produce images of the inside of the body. It is commonly used to visualize internal organs, tissues, and blood flow without the need for invasive procedures.
2. How does an ultrasound work?
Ans. During an ultrasound, a handheld device called a transducer is used to emit high-frequency sound waves into the body. These sound waves bounce off the internal structures, and the transducer picks up the echoes, which are then converted into images by a computer. This allows healthcare professionals to see the internal structures in real-time.
3. What are the uses of ultrasound in medical practice?
Ans. Ultrasound has various uses in medical practice. It is commonly used for prenatal imaging to monitor the development of the fetus. It is also used to diagnose and monitor conditions such as gallstones, kidney stones, tumors, and abnormalities in organs like the liver, heart, and bladder. Additionally, ultrasound is used to guide needle biopsies and assist in certain surgical procedures.
4. Is ultrasound safe?
Ans. Yes, ultrasound is generally considered safe and non-invasive. It does not use ionizing radiation like X-rays or CT scans, making it a preferred imaging modality for pregnant women and children. However, excessive or prolonged exposure to ultrasound may cause heating or cavitation effects, which can potentially harm tissues. Therefore, ultrasound should only be performed by trained healthcare professionals and in appropriate clinical settings.
5. Are there any limitations to ultrasound imaging?
Ans. While ultrasound is a valuable imaging tool, it does have some limitations. It may not provide clear images in patients with obesity or excessive gas in the intestines. Additionally, ultrasound may not be able to penetrate through dense bone or air-filled structures, limiting its effectiveness in certain areas of the body. In some cases, further imaging modalities such as CT scans or MRI may be necessary to complement the information obtained from an ultrasound.
80 videos|352 docs|97 tests
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