Correct option is D
The correct answer is
(d) Ultrasonography.
· Ultrasonography, also known as ultrasound, is a medical imaging technique that uses high-frequency sound waves to create images of structures within the body. It is commonly used to detect stones in the kidney and gall bladder as well as to monitor the development of the fetus during pregnancy. The procedure is non-invasive, painless, and does not involve radiation, making it safe for both diagnostic and monitoring purposes.
Information Booster:
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Electrocardiography (ECG): A test that measures the electrical activity of the heart, used to detect heart problems but not for imaging stones or examining the fetus.
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Echocardiography: An ultrasound-based test specifically used to examine the heart's structure and function, but not typically used for detecting stones or fetal examination.
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Magnetic Resonance Imaging (MRI): A powerful imaging technique that uses magnetic fields and radio waves to create detailed images of the body's organs and tissues, but is different from ultrasound and not commonly used for fetal examination.