Bernd-Joachim Hackelöer was born in 1945 in Marburg, Germany. He qualified in Medicine at the University of Marburg and trained in Obstetrics & Gynaecology at the University Hospital for Women, Marburg from 1971-1977. Between 1972 and 75, he studied ultrasonography with Profossor Manfred Hansmann in Bonn and Professor Alfred Kratochwil in Vienna. With Hansmann, they were able to visualize ovarian follicles using the static abdominal B-scan. During his research fellowship at Professor Ian Donald's department in Glasgow in 1974, he further developed the technique of tracking ovarian follicular growth. Together with Hugh Robinson, they established normal ultrasound values for follicular diameters at their varying stages of development and correlated these values with peripheral plasma hormone levels. They also demonstrated an almost linear growth of the mean follicular diameters prior to ovulation and a rapid decline soon afterwards. These data cumulated into his thesis, the "Demonstration of Ovulation by ultrasound" which he published in 1978. In the late 1970s and early 80s, he published various other articles on the ovarian follicular changes particularly during ovulation induction therapy, basing on static and later on real-time sector ultrasound.

Professor Hackelöer is also active in many areas of obstetrical, gynecological and breast ultrasonography, cardiotocography, instrumentations, fetal medicine and in particular in prenatal diagnosis and in intrauterine therapy. He is an early advocate of in-utero laser surgery on various conditions such as the twin-to-twin transfusion syndrome. In 1981, he became Professor of Obstetrics & Gynaecology and Chairman of the Department of FetoMaternal Medicine, Gynecological & Breast Ultrasound, and the Prenatal Diagnostik and Therapy Centre, Barmbeck General and Teaching Hospital, Hamburg, Germany. Since 1993 he was Director of the department.

Together with Professor Hansmann in Bonn, Professor Hackelöer was responsible for the introduction of a screening ultrasound in obstetrics in Germany in 1980 and was also responsible for education and training (multi-stage-concept) for Obstetricians and Gynecologists of the DEGUM for many years. Professor Hackepalatinolöer was a member of the DEGUM since 1974 and its president since 1995. He is currently holding the post of its Assessor. He is an honorary Fellow of the AIUM since 1986 . Professor Hackeloer has been an active member of numerous scientific committees, advisory boards and administrations of national and international scientific societies. He is also currently memeber of the Education and Professional Standards Committee of the European Federation of Societies for Ultrasound in Medicien and Biology (EUSUMB). In addition, he is on the Editorial Boards of many important international journals. He is author and co-author of over 70 papers and books and numerous International organizations in Prenatal diagnosis, ultrasound and breast disease imaging.

Some of Professor Hackelöer's early seminal papers:

- Hackeloer B J, Hansmann M 1976 Ultraschalldiagnostik in der Fruhschwangerschaft. Gynakologe 9:108
- Hackeloer B J, Nitschke S, Baume E, Sturm G, Buchholz R 1977 Ultraschalldarstellung von Ovarveranderungen bei Gonadotropinstimulierung. Geburtshilfe und Frauenheilkunde 37:185
- Hackeloer B J, Robinson H P 1977 Ultraschalldarstellung des wachsenden Follikels und Corpus Luteum im normalen physiologischen Zyklus. Geburtshilfe und Frauenheilkunde 37:163
- Hackelöer B.J. 1978 Ultrasonic demonstration of follicular development. Lancet i: 941.
- Hackeloer B J, Fleming R, Robinson H P, Adam A H, Coutts J R T 1979 Correlation of ultronic and endocrinological assessment of human follicular development. American Journal of Obstetrics and Gynecology 135:122
- Hackelöer B.J., Robinson H.P. 1979 Ultrasonic demonstration of follicle and corpus luteum development in normal menstrual cycle and its relationship to hormone profile. Archives of Gynecology 228: 556.

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