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  2. Home ultrasound - Wikipedia

    en.wikipedia.org/wiki/Home_ultrasound

    Typical diagnostic ultrasound machines operate in the frequency range of 2-18 megahertz, whereas home ultrasound machines and therapeutic ultrasound machines operate in the frequency range of .7-3.3 megahertz. Diagnostic sonography is typically used to create an audio "image", such as during pregnancy to visualize the developing baby.

  3. Obstetric ultrasonography - Wikipedia

    en.wikipedia.org/wiki/Obstetric_ultrasonography

    The International Society of Ultrasound in Obstetrics and Gynecology (ISUOG) recommends that pregnant women have routine obstetric ultrasounds between 18 weeks' and 22 weeks' gestational age (the anatomy scan) in order to confirm pregnancy dating, to measure the fetus so that growth abnormalities can be recognized quickly later in pregnancy ...

  4. Pre-Conception and Pre-Natal Diagnostic Techniques Act, 1994

    en.wikipedia.org/wiki/Pre-Conception_and_Pre...

    This process began in the early 1990 when ultrasound techniques gained widespread use in India. There was a tendency for families to continuously produce children until a male child was born. [ 4 ] Foetal sex determination and sex-selective abortion by medical professionals has today grown into a Rs. 1,000 crore industry (US$244 million) in India.

  5. Doppler fetal monitor - Wikipedia

    en.wikipedia.org/wiki/Doppler_fetal_monitor

    Dopplers for home or hospital use differ in the following ways: Manufacturer: popular manufacturers Baby Doppler, Sonoline, Ultrasound Technologies, Newman Medical, Nicolet (purchased by Natus), Arjo-Huntleigh, and Summit Doppler (now Cooper Surgical). Probe type: waterproof or not. Waterproof probes are used for water births.

  6. Pregnancy test - Wikipedia

    en.wikipedia.org/wiki/Pregnancy_test

    Both abdominal and vaginal ultrasound may be used, but vaginal ultrasound allows for earlier visualization of the pregnancy. With obstetric ultrasonography the gestational sac (intrauterine fluid collection) can be visualized at 4.5 to 5 weeks gestation , the yolk sac at 5 to 6 weeks gestation, and fetal pole at 5.5 to 6 weeks gestation.

  7. Medical ultrasound - Wikipedia

    en.wikipedia.org/wiki/Medical_ultrasound

    The machine used is called an ultrasound machine, a sonograph or an echograph. The visual image formed using this technique is called an ultrasonogram, a sonogram or an echogram. Ultrasound of carotid artery. Ultrasound is composed of sound waves with frequencies greater than 20,000 Hz, which is the approximate upper threshold of human hearing. [1]

  8. Portable ultrasound - Wikipedia

    en.wikipedia.org/wiki/Portable_ultrasound

    Portable ultrasound is a modality of medical ultrasonography that utilizes small and light devices, compared to the console-style ultrasound machines that preceded them. In most cases these mobile ultrasound systems could be carried by hand and in some cases even operated for a time on battery power alone.

  9. 3D ultrasound - Wikipedia

    en.wikipedia.org/wiki/3D_ultrasound

    A 3D ultrasound of a human fetus aged 20 weeks. 3D ultrasound is a medical ultrasound technique, often used in fetal, cardiac, trans-rectal and intra-vascular applications. 3D ultrasound refers specifically to the volume rendering of ultrasound data.

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