By Daniela Prayer, Peter C. Brugger, Ulrika Asenbaum (auth.), Daniela Prayer (eds.)

This is the main complete booklet to be written almost about fetal MRI. It presents a pragmatic hands-on method of using cutting-edge MRI suggestions and the optimization of sequences. Fetal pathological stipulations and strategies of prenatal MRI prognosis are mentioned by means of organ procedure, and the to be had literature is reviewed. Interpretation of findings and strength artifacts are completely thought of due to a number of high quality illustrations. moreover, the consequences of fetal MRI are explored from the medico-legal and moral issues of view. This publication will function a close source for radiologists, obstetricians, neonatologists, geneticists, and any practitioner desirous to achieve an in-depth figuring out of fetal MRI know-how and functions. moreover, it is going to offer a reference resource for technologists, researchers, scholars, and people who are enforcing a fetal MRI provider of their personal facility.

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32 1 Introduction M. ” It is an unfortunate fact that MRI is a signal limited method of imaging, and unlike other techniques, there are limited strategies available to raise the baseline amount of signal D. 1007/174_2010_96, © Springer-Verlag Berlin Heidelberg 2011 20 available. Methods where the body is probed using an outside source and the information is created through the interaction of that source with tissues, such as X-ray, CT, and PET, the intensity of the outside source can easily be increased within biological safety limits.

Sao Paulo Med J 125:91–95 Tauscher V (2008). Fetal cerebral ventriculomegaly—prenatal diagnosis, associated malformations and postpartal outcome. Thesis, Department for Gynaecology and Obstetrics, Medical University Vienna, Vienna Toi A, Lister W, Fong K (2004) How early are fetal cerebral sulci visible at prenatal ultrasound and what is the normal pattern of early fetal sulcal development? Ultrasound Obstet Gynecol 24:706–715 Vanderheyden T, Kumar S, Fisk NM (2003) Fetal renal impairment. Semin Neonatol 8:279–289 von Mandach U (2005) Drug use in pregnancy.

The third and final class of high speed imaging methods is the gradient recalled echo method. As with the TSE methods above, multiple lines of k-space are acquired per primary excitation but instead of using refocusing RF pulses, only the effects due to the imaging reversed by simply reversing the applied magnetic gradients. The signal will be recalled as those parts of the object which experienced a higher field will now experience a lower field and vice versa. As long as care is taken that the data is suitably reversed before use, this gradient recalled echo may be used for further lines of k-space.

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