Titlebook: ultrasound in gynecology and obstetrics; Sam N. Hassani Book 1978 Springer-Verlag New York Inc. 1978 Frauenheilkunde.Geburtshilfe.Gynecolo

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Sam N. Hassani M.D.sfusion, and, finally, the acquisition of new means for the effective therapy of infection. All these developments have led to a sharp reduction of maternal and perinatal mortality. In this connection it must be pointed out that such a reduction could never have been accomplished without the favourable social978-94-010-3150-9978-94-010-3148-6

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OATH

bstetrics and gynecology. It can be stated without qualification that modern obstetrics and gynecology cannot be practiced without the use of diagnostic ultrasound, and in particular, the use of ultrasonogra­ phy. Ultrasonography quickly and safely provides detailed, high­ resolution images of the p

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principles of ultrasonography,o propagate. The highest frequency audible to the human ear is 20,000 cycles per second or 20 kiloHertz (KHz). Sound waves above this frequency are described as ultrasound. Unlike electromagnetic waves, sound cannot travel across a vacuum (10).

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ultrasonography in obstetrics,aylor et al in 1964 (2). Today, ultrasound is rapidly replacing the use of X-ray studies in the field of obstetrics and gynecology. Since ultrasound study is safe, atraumatic, and noninvasive, it is thus an ideal scanning procedure for the abdominal and pelvic regions. At present it is essential to

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ultrasonography of gynecologically and obstetrically related medical and surgical disorders,hrosis of the obstructive type (Fig. 4. 1a and b). Hydronephrosis may be readily diagnosed by ultrasound and has been previously discussed. Cystitis and ureterovesical reflux may cause hydronephrosis and renal scarring from pyelonephritis. Additionally, primary diseases of the kidneys often occur in

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Book 1978and gynecology. It can be stated without qualification that modern obstetrics and gynecology cannot be practiced without the use of diagnostic ultrasound, and in particular, the use of ultrasonogra­ phy. Ultrasonography quickly and safely provides detailed, high­ resolution images of the pelvic orga

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Sam N. Hassani M.D. years, as evidenced by the number of research papers currently being published on the subject. The in­ creased interest is probably based on the evidence that effective management of many plant diseases is, for the most part, contingent upon a clear understanding of the nature of host-parasite inte