The quantitative analysis of blood flow within central and peripheral blood vessels has attracted more and more interest, for with the rapid developments in vascular surgery and the introduction of percutaneous transluminal angioplasty, it is becom ing increasingly important to be able to measure regional blood flow in man. In clinical radiology, angiography has been used predominantly from the point of view of its morphological applications. However, theoretically angiography may also be regarded as a specific application of indicator-dilution measurements of blood flow. The indicator is contrast medium (CM), the changing concentration of which is re corded by cinematography or video-electronic systems at sites downstream from the point of injection. The curves of density thus obtained correspond to indicator-di lution curves. The blood flow can be calculated from the concentration-time curves ofCM in much the same way as it is estimated from other indicator-dilution curves. In our early work with clinical application of videodensitometric measurement of blood flow in the iliac artery, we found that this method did not offer as high a degree of accuracy as one would have expected from investigations by other authors. We saw that we needed to examine the following problems: 1. We had to investigate whether our conventional X-ray equipment and video densitometer could be viewed as a linear measuring system. To what extent do unavoidable nonlinear changes in the measuring signals influence the blood flow values? 2."

Benefits: - Leblancs new investigative technique allows the rapid visualisation of the most vulnerable points of the cranial nerves - the course of each nerve is studied radiologically and anatomically, using dissections, injections, serial macroscopic sections, and x-rays - each cranial nerve is depicted from its origin to the muscle with its intracranial, extracranial, and intracranial pathways - the start of each chapter features an illustration of the cranial nerve as a whole, allowing the reader to quickly memorize the cranial anatomy - unique full-colour illustrations make the atlas a reference of outstanding value to clinicians, researchers and students

Cet atlas prA(c)sente le trajet de chaque nerf A partir de son origine rA(c)elle et apparente, son trajet intra-canalaire et intra-crA nien, jusqu'A la pA(c)riphA(c)rie avec la vascularisation artA(c)rielle et veineuse. L'auteur a rA(c)alisA(c) de nombreux diagrammes particuliers. Notamment de la systA(c)matisation du nerf facial avec ses rameaux communicants jusqu'aux glandes lacrymales et salivaires et de l'organe audio-vestibulaire prA(c)sentA(c) avec les fenestrations au niveau des parois osseuses de la cochlA(c)e, du vestibule et des canaux semi-circulaires, afin d'y inclure A l'intA(c)rieur, les A(c)lA(c)ments organiques de l'audition et de l'A(c)quilibration des organes spiral de Corti, de l'utricule, des crAates ampullaires, du labyrinthe membraneux. L'ouvrage est un guide prA(c)cieux pour l'oto-rhino-laryngologiste, l'anatomiste, le neurochirurgien, le radiologiste, le neuro-radiologiste, le neurologue, l'ophtalmologiste, le chirurgien maxillo-facial, l'odontologiste, ainsi que le stomatologiste.

Recent clinical experience and tremendous technical advances make it more imperative than ever that operators performing embolization have a sound background in functional neuroanatomy and clinical evaluation in addition to technical training. This book provides a description of vascular anatomy that will permit the accurate assessment of variations and functional territories and will make the prediction of the risks and management of cerebral vascular disease possible. Through this type of anatomical analysis every potential arrangement in cerebral vascular development can be predicted. Thus, endovascular procedures in the spinal cord and brain can be best planned and performed. Pierre Lasjaunias, Alejandro Berenstein, and Karel ter Brugge are highly committed to both research and teaching in the clinical field of neurovascular diseases. The first volume of the second edition of Surgical Neuroangiography combines the previous volumes 1 and 3 in one book.