By Sam N. Hassani M.D. (auth.)
by Dr. Donald L. King The earlier decade has noticeable the ascent of ultrasonography to a preeminent place as a diagnostic imaging modality for obstetrics and gynecology. it may be said with out qualification that sleek obstetrics and gynecology can't be practiced with out using diagnostic ultrasound, and specifically, using ultrasonogra phy. Ultrasonography quick and effectively offers certain, excessive answer pictures of the pelvic organs and gravid uterus. the standard and volume of diagnostic details got via extremely sonography some distance exceeds something formerly on hand and has had a progressive impression at the administration of sufferers. excessive answer static photos enable the intrauterine analysis of fetal development retardation and fetal abnormalities. as well as tradi tional photographs, more moderen dynamic imaging options enable observa tion of fetal movement, cardiac pulsation, and breathing efforts. using ultrasonography for tips has drastically augmented the security and application of amniocentesis. one of many nice virtues of diagnostic ultrasound has been its obvious safeguard. at this time power degrees, diagnostic ultrasound seems to be with none injurious impact. even if all of the availa ble facts means that it's a very secure modality and that the convenience to possibility ratio is particularly excessive, the particular security margin for its use Vll as but continues to be unknown. in this case, practitioners are prompt to restrict its use basically to these events within which actual scientific indica tions exist and genuine gain to the sufferer is probably going to result.
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Extra info for Ultrasound in gynecology and obstetrics
Sample text
ANGULATION If the transducer is pointing toward the head or the right side, the degree of angulation relative to the perpendicular body section is designated as plus. If the transducer is pointing toward the feet or the left side it is designated as minus. For example, A TC + 2 + 15° is the section 2 cm above the transcrestalline in anterior projection with a 15° angulation toward the head. SUBCOSTAL AND INTERCOSTAL SECTIONS Subcostal sectional study starts at the xiphoid process and runs parallel to the ribs from the xiphoid.
30a and b), thus causing a sonolucent area behind these structures. It should not be mistaken for a pathologic condition. For better evaluation of this false impression, the transducer should be moved perpendicularly to the area of interest to investigate the through transmission. 30(a) Supine transverse scan. Gray scale. Below the echoes of the distal bladder wall-uterus interface is a total sonic shadow. Air or calcium will produce a total acoustic shadow. Gas gangrene of the uterus is demonstrated.
Br J RadioI45:340, 1972 24. Curzen P: The safety of diagnostic ultrasound. Practitioner 209:822, 1972 25.
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