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Unlabelled: Hystero-salpingo-contrast sonography (HyCoSy) is a sensitive method of assessing tubal patency but cannot completely substitute diagnostic laparoscopy with blue dye and hysteroscopy. Three-dimensional sonography has new imaging facilities which could lead to a reduction of invasive diagnostic procedures., Aim: The aim of this pilot study was to analyse the feasibility of HyCoSy by 3D- and 3D-Doppler-sonography., Methods: In a prospective setting conventional (2D) HyCoSy was performed in 21 patients with an ultrasound device designed for 3D-ultrasound. After the completion of the 2D procedure, 3D-ultrasound was carried out. In five patients an additional 3D-Doppler-HyCoSy was performed. The generated 3D-volumina were then examined. Laparoscopy with blue dye was performed immediately after the ultrasound examination., Results: A total of 42 Fallopian tubes was assessed. On 2D-ultrasound, visibility of the tubes was excellent in 28 and limited in seven tubes. Of the seven tubes not visible on 2D-ultrasound, four were not patent on laparoscopy. On 3D-ultrasound, visibility of the tubes was excellent in 15 and limited in twelve tubes. 15 tubes were not visible on 3D-ultrasound. 3D-Doppler-HyCoSy revealed excellent assessment in eight of ten tubes, even in one of those with limited visibility on 2D- and 3D-HyCoSy. In 19 patients the assessment of the uterine cavity was excellent by 2D- and 3D-HyCoSy, whereas it was limited in two patients., Conclusion: It is possible to visualise the full length of the tubes in a very detailed way from the uterine cavity to the fimbrial end in some patients, but the diagnostic power of HyCoSy is not improved by adding 3D-imaging. The accuracy of 3D-ultrasound seemed to be improved by 3D-Doppler-ultrasound.

Hysterosalpingoscintigraphy (HSSG) is a simple method to evaluate the transport function of uterus and fallopian tubes. There is a quick uptake of radionuclides into the uterus and a transport to the side bearing the dominant follicle in 70 % of the patients in the late follicular phase of the cycle. Uptake and transport of the immotile radionuclides imitate the directed sperm transport through the female genital tract at the time of ovulation. 214 of 796 infertility patients with proven patency of fallopian tubes (27 %) showed only an uptake of the particles without a transport towards the fallopian tubes (negative HSSG). In these patients no spontaneous pregnancy occurred and pregnancy rate remained low by the means of timed intercourse or insemination. Indeed, the pregnancy rate (8.4 %) was significantly lower compared with the patients who became pregnant by timed intercourse, insemination or spontaneously and had a positive HSSG before (15 %; p=0.001). However, the pregnancy rate that could only be achieved by methods of ART was significantly higher in the group of patients with negative HSSG (57 % vs. 25 %, p=0.05). Our data suggest that HSSG is a new method to evaluate the integrity of the inner genital tract's transport function, especially in patients suffering from idiopathic infertility. Impaired transport function (negative HSSG) should be considered as an indication for IVF-treatment.

Ectopic twin pregnancy is rare. Most frequently it occurs as a heterotopic pregnancy located simultaneously in the the fallopian tube and in the uterus. An unusual case of an intact unilateral ectopic twin pregnancy in the 7th week of gestation was diagnosed at this early stage by TVS (transvaginal ultrasound). The patient was successfully treated by laparoscopic salpingectomy. A review of the current literature is discussed.

Unlabelled: Evaluation of tubal patency is usually assessed with hysterosalpingography (HSG) or laparoscopy including chromopertubation. Sonographical visualisation with Echovist 200 (hysterosalpingo-contrast sonography-HyCoSy) provides a new noninvasive tool. Therefore we conducted a prospective controlled study to compare sonographic and radiological evaluation of the fallopian tube. Main test parameters were accuracy of both methods and patient discomfort., Patients and Methods: 50 patients were enrolled in this study. All patients were examined by both techniques; the sequence was randomly chosen. The results of HSG and HyCoSy were compared. Patient discomfort was assessed with a standardised questionnaire using a visual analog scale (0-10)., Results: Diagnosis of tubal patency identifying proximal or distal blockage was the primary end point using HSG as standard technique. Proximal and distal patency by HSG was sonographically confirmed in 82.9% (63/76) and 82.1% (46/56) tubes respectively. If HSG revealed proximal or distal occlusion, identical results were obtained in 91.7% (22/24) or 60% (12/20) by HyCoSy. No significant differences were found in patient discomfort. However a significant correlation was demonstrated between tubal patency and discomfort. The lowest score was obtained in patients with open tubes (4.6) increased in patients with distal occlusion (6.0) and reached a maximum with proximal pathology (8.7)., Conclusion: Compared to conventional HSG, HyCoSy provides a highly efficient evaluation of tubal pathology and can be successfully used as a noninvasive screening method.

In this retrospective study the data of 340 patients who underwent invasive diagnostics in suspected ectopic pregnancy from 1985 to 1991 are being analyzed. The aim of this study is to examine the prognostic value of ultrasonic findings after the introduction of transvaginal sonography and highly sensitive urine pregnancy tests in the every day clinical routine. In transvaginal ultrasound significantly more direct signs of an ectopic pregnancy than in the abdominal technique were found showing a markedly higher positive predictive value: 93.5% for an extrauterine double ring, 90.7% for inhomogeneous adnexal masses with the simultaneous finding of echogenic fluid in the pouch of Douglas and 79.3% for isolated inhomogeneous adnexal masses. The predictive values for indirect sonographic hints of suspected extrauterine gravidity were 78.4% for an empty uterine cavity and 87.3% for echogenic fluid in the pouch of Douglas. With growing experience in the vaginal ultrasound technique the positive predictive values of all these signs reached 91% to 98%. Additionally the rate of false-negative urine pregnancy tests in patients with ectopic pregnancy sank with increasing sensitivity from 49% (1000 IU HCG/l) to 3.2% (50 IU/l). Summarizing all these factors the reliability of conservative diagnostic means in suspected ectopic pregnancy raised considerably from 56.4% to 94.3% during the course of our study.

The extremely small ultrasound transducers of the intraluminal ultrasound instruments, introduced via catheters, enable diagnosis to be made inside hollow organs. In order to test the possible uses and indications for this new method in gynaecology, we conducted preliminary examinations in the diagnosis of the uterus and tubes. We employed an intraluminal instrument supplied by Dornier. The intraluminal transducers of this instrument have a diameter of 3.5 and 5 F. Following in-vitro examinations, hysteroscopy and laparoscopy/laparotomy were performed in 15 patients during which the transducer was pushed up via the cervix uteri to the tubes with full vision. This was successful in all 15 patients; in 9 cases the transducer could be pushed as far as the distal end. The tubal walls were examined in detail by this method and for the first time it became possible to achieve functional diagnosis of the motility of the tubes. Strictures can be visualised. The endometrium of the uterus, however, cannot as yet be diagnosed exactly by the present-day state of examination technique. If image quality can be further improved, this method will be the first to enable a functional diagnosis of the tubes and the uterus.

In colour-coded Duplex sonography, ultrasound contrast agents produce a significant enhancement of Doppler signals from the blood. Animal experiments were performed to examine whether a combination of colour-coded Duplex sonography and ultrasound contrast agents can also visualise movements from hollow spaces which do not normally contain scatteres (or an insufficient number of them). The animal experiments showed that the method can visualise both movements in the tubae and a vesicoureteral reflux. This opens up new diagnostic possibilities for ultrasound, which, however, still require rechecking by means of clinical studies.

Tubal patency was studied in 17 sterile women by means of colour-coded duplex sonography (CCDS) with local injection of an ultrasonic contrast medium. The results were compared with a conventional hysterosalpingogram. CCDS demonstrated all the soft tissues and their mobility. The ultrasonic contrast medium was SH U 454 (Schering). The colour signals generated by the air bubbles makes it possible to demonstrate tubal patency on both sides. The combination of an ultrasonic contrast medium and CCDS provides a simple, rapid, accurate and safe method for demonstrating tubal patency. Tubal patency can be demonstrated in the presence of anatomical complications and requires only a small amount of contrast medium.

Pathological change of the tube is one of the most common causes of female sterility. While mechanical occlusion can be identified by the techniques of tube examination so far in use, tubal function can hardly be assessed by means of them. Described and evaluated in this paper is a test method recently devised in nuclear medicine for the assessment of tubal function.

The possibilities of sonographic diagnosis of pathologic changes in the uterine tube are examined by means of a computerised automatic real-time scanner with a statistical B-scan of high resolution. It is not possible to isolate sonographically the anatomically unchanged tube or the tube obliterated as a result of salpingitis. Nevertheless, it is possible to effect an indirect diagnosis if the tube is at least unilaterally patent or if it is bilaterally occluded, by means of an extended form of sonography within the scope of a sonographically controlled hydropertubation via a phenomenon which the author describes an "positive" or "negative" "phenomenon of Douglas". Hence, sonographically monitored hydropertubation, together with hysterosalpingography or laparoscopic chromopertubation--with reservations--is a valuable diagnostic tool to help in clarifying the cause of sterility. Pathological changes of the tubes in the sense of a sactosalpinx of different contents (retained secretions) can be differentiated by sonography. A characteristic sonographic echo pattern is also seen if the tubes are conglutinated with an extremely low amount of liquid collected in the tube. Various pathological changes of the tube can be recognised sonographically directly and indirectly by means of sonography extended in this manner.

A prospective study in 38 patients was designed to evaluate the efficacy and reliability of radionuclide hysterosalpingoscintigraphy (HSS) using 99mTc labelled human albumin macroaggregates (HAMA). Following application in the posterior vaginal fornix at the time of ovulation, HAMA normally migrate spontaneously through the uterus and tubes and may be identified after 20 min (range 5-90 min) in the uterine cavity and after 2 hrs (range 40 min - 3 hrs) in the free pelvis, using a gamma camera. When correlated with the findings of conventional contrast hysterosalpingography (HSG), the radionuclide procedure yielded comparable results in females with patent or clearly obstructed tubes. Using 8-10 MBq 99mTc, radiation exposure was estimated to be 0.75 cGy per ovary, which is considerably less than the mean dose absorbed with HSG. As the HSS procedure imitates the migration of spermatozoa by the means of an inert tracer, it allows a direct insight in the mechanisms of passive transport taking place in the uterus and tubes at the period of ovulation. Thus, it reflects the physiological state of the female reproductive tract. On the basis of the scintigraphic findings, equivocal results on HSG have to be re-evaluated, as tubes, which are anatomically patent under high pressure, may be functionally deficient.