Thursday, August 26, 2010

How it Works Ultrasound

Ultrasound, also called sonography or ultrasonography, it requires disclosure of certain body parts to high-frequency sound waves to produce images from inside the body. Ultrasound does not use ionizing radiation (used in X-rays). Because ultrasound images are captured in real time, can show the structure and movement of internal organs, and blood flowing through blood vessels.
Ultrasound is a noninvasive test that helps physicians diagnose medical conditions and treatment. Pelvic ultrasound provides images of structures and organs of the abdomen or pelvis.
There are three types of pelvic ultrasound:
  • Abdominal (transabdominal)
  • Vagina (transvaginal, endovaginal) in women
  • Rectal (transrectal) in men

Doppler ultrasound may be part of a gynecological ultrasound. Doppler is a special ultrasound technique to assess blood flow through a blood vessel in the agency's main arteries and veins of the abdomen, arms, legs and neck.
What are the most common applications of the procedure?
In women, abdominal or pelvic ultrasound usually performed to assess:
  • Bladder.
  • Ovaries.
  • Uterus.
  • Cervix.
  • Fallopian tubes.

Pelvic ultrasound examinations are also used to monitor the health and development of the embryo and fetus during pregnancy.
Ultrasound can help diagnose the symptoms experienced by women, such as:
  • pelvic pain
  • abnormal bleeding
  • other menstrual problems

and help to identify:
  • palpable mass, such as ovarian cyst and uterine
  • uterine cancer or ovarian

Transvaginal ultrasound is usually performed to visualize the endometrium or lining of the uterus, including its thickness, and ovaries. transvaginal ultrasound also provides a good measure of the muscular wall of the uterus, called the myometrium. Sonohysterography allows more detailed studies of cancer of the mouth. These are usually done to detect:
  • Uterine anomalies
  • Uterine scar
  • Endometrial polyps
  • Uterine fibroids
  • Cancer, particularly among patients with impaired uterine bleeding

Some doctors also use Sonohysterography in patients with infertility.
In men, abdominal or pelvic ultrasound used to assess:
  • Bladder
  • Vesicles
  • Prostate
Among men and women, pelvic ultrasound can help identify:
  • kidney stones.
  • bladder tumors.
  • other diseases of the bladder.
In children, abdominal ultrasound, or pelvic floor can help assess:
  • Early or delayed puberty in girls.
  • With pelvic pain
  • appendicitis.
  • abnormalities of ambiguous genitalia and pelvis.
  • pelvic masses in children.

Pelvic ultrasound is also useful in procedures such as needle biopsy, in which needles are used for cell bodies of the sample testing laboratory.

Doppler ultrasound images can help the doctor to see and evaluate:
  • barriers to the flow of blood (such as blood clots).
  • vasoconstriction (which may be caused by plaques).
  • cancer and birth defects.

via radiologyinfo

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