Angiographic Anatomy of the Anterior Inferior Cerebellar Artery

ISBN-13: 9783540137689 / Angielski / Miękka / 1985 / 96 str.

J. J. Heimans; J. Valk; A. H. M. Lohman

Opis

The anterior inferior cerebellar artery (AI CA) is one of the major branches of the basilar artery and supplies part of the pons, the upper medulla, and the cerebellar hemisphere. The artery can be visualized by means of vertebral angiography. This technique of examination was carried out for the first time in 1933 by Moniz and co-workers (Moniz and Alves 1933, Moniz et al. 1933). During the decades that followed, angiographic techniques improved considera- bly, with the result that more details of the angioarchitecture of the posterior cranial fossa could be demonstrated. Satisfactory visualization of the AICA and its branches depends greatly on the use of subtraction, and this is the reason why detailed reports on the angiographic appearance of the artery were for the greater part published after 1965, when subtraction techniques were more consistently used (Takahashi et al. 1968, 1974; Gerald et al. 1973). The angiographic appearance of the various segments of the AICA in the lateral projection, both in the normal situation and in the presence of tumors, has been studied by Naidich et al. (1976a, b). The primary aim was to recognize and denominate the separate branches, loops, and segments of the AICA in order to locate tumors on the basis of displacements of portions of the artery. The fact that the course, caliber, and distribution of the AICA are very variable was not emphasized.

Spis treści

1 Introduction.- 2 Anatomy.- 2.1 Review of the Literature.- 2.1.1 General Description of the Arteries of the Posterior Cranial Fossa.- 2.1.2 Detailed Description of the Anterior Inferior Cerebellar Artery.- 2.1.2.1 Origin.- 2.1.2.2 Multiplication of the AICA.- 2.1.2.3 Absence of the AICA.- 2.1.2.4 The Course of the AICA in Relation to the Abducens Nerve.- 2.1.2.5 Relation of the AICA to the Facial and Vestibulocochlear Nerves and to the Internal Auditory Meatus.- 2.1.2.6 Branches of the AICA.- 2.1.2.7 Variations of the AICA.- 2.1.2.8 Areas of Supply.- 2.1.2.9 Anastomoses Between the AICA and Other Cerebellar Arteries.- 2.2 Injection Study of the Vertebrobasilar Arteries.- 2.2.1 Materials and Methods.- 2.2.2 Results.- 2.2.3 Discussion.- 3 Radiology.- 3.1 Review of the Literature.- 3.1.1 Visualization of the Vertebrobasilar System.- 3.1.2 Subtraction.- 3.1.3 The AICA in Vertebral Angiography.- 3.1.4 Projection.- 3.1.5 Vertebral Angiography in Posterior Fossa Tumors: General Aspects.- 3.1.6 The AICA in Cerebellopontine Angle Tumors.- 3.1.7 The AICA in Cerebellar Tumors.- 3.1.8 The AICA in Brain Stem Tumors.- 3.1.9 The AICA in Ischemic Lesions.- 3.2 Analysis of Normal and Abnormal Angiograms.- 3.2.1 Materials and Methods.- 3.2.2 Results.- 3.2.2.1 The AICA in 100 Normal Vertebral Angiograms.- 3.2.2.2 The AICA in Cerebellopontine Angle Tumors.- 3.2.2.3 The AICA in Cerebellar Tumors.- 3.2.2.4 The AICA in Brain Stem Tumors.- 3.2.2.5 The AICA in Ischemic Lesions.- 3.2.3 Discussion.- 4 Summary.- 5 References.- 6 Subject Index.