of Volume I -- 1 Historical Aspects of Intracranial Aneurysms -- Early History -- The Early 1900s -- Angiography -- Early Surgical Advances -- Vertebrobasilar Aneurysms -- 2 The Incidence of Intracranial Aneurysm -- 3 Data I -- 1 General Overview -- Materials and Methods -- 2 Single Intracranial Aneurysms Occurring in Adults -- Data Base -- Data Processing -- Results -- Discussion -- 3 Multiple Intracranial Aneurysms Occurring in Adults -- Data Base and Data Processing -- Results -- Discussion -- 4 Intracranial Aneurysms Occurring in Children -- Data Base and Data Processing -- Results of the Analysis of Single Aneurysm Cases without Associated Conditions -- Results of the Analysis of Single Aneurysm Cases with Associated Conditions -- Multiple Aneurysms Occurring in Children -- Discussion -- 5 Giant Intracranial Aneurysms Occurring in Adults -- Results of the Analysis of Adult Giant Single Aneurysms -- Giant Multiple Aneurysms Occurring in Adults -- Discussion -- 6 Summary -- Adult Single Berry Aneurysms -- Adult Multiple Berry Aneurysms -- Childhood Aneurysms -- Adult Giant Aneurysms -- 4 Data II -- Tables -- 5 Signs and Symptoms I General -- Signs and Symptoms -- Classification and Grading -- Summary -- 6 Signs and Symptoms II Specific -- 1 Specific Aneurysms -- Aneurysms of the Internal Carotid Artery and Its Branches -- Aneurysms of the Middle Cerebral Artery -- Aneurysms of the Anterior Communicating Artery -- Aneurysms of the Anterior Cerebral Artery -- Aneurysms of the Basilar Artery and Its Branches -- Aneurysms of the Vertebral Artery and Its Branches -- 2 Giant Aneurysms -- Signs of Sellar/Suprasellar Tumor -- Bruit -- Convulsive Seizures -- Trigeminal Neuralgia -- Other Findings -- 7 Signs and Symptoms III Ophthalmic -- Cranial Nerves 3, 4, 5, and 6 -- Cranial Nerve 2 -- Summary -- 8 Secondary Complications of the Subarachnoid Hemorrhage -- Elevated Intracranial Pressure -- Hydrocephalus -- Intracranial Hematoma -- Vasospasm -- Ischemia and Infarction -- Fluid and Electrolyte Disorders -- Rebleeding -- Epileptic Seizures -- Gastrointestinal Hemorrhage -- Pulmonary Edema -- Electrocardiographic Changes -- Summary -- 9 Vasospasm I Experimental Findings -- Definitions and Background -- Experimental Designs and Procedures -- Specific Experimental Findings -- Some Experimental Therapies in Animals and Humans -- Summary -- 10 Vasospasm II Clinical Considerations -- Location and Occurrence -- Signs and Symptoms -- Tests -- Related Factors -- Treatment -- Summary -- 11 The Pathology of Intracranial Arterial Aneurysms and their Complications -- Definitions -- Fusiform Aneurysms -- Saccular Arterial Aneurysms -- Aneurysms of Inflammatory Origin -- Neoplastic (Oncotic) Aneurysms -- Traumatic Aneurysms -- Dissecting Aneurysms -- Aneurysms of the Spinal Arteries -- 12 Etiology and Pathogenesis of Intracranial Berry Aneurysms -- Distribution of Berry Aneurysms in Nature -- Anatomic Variations Associated with Berry Aneurysms -- Persistence of Vestigial Vessels -- Medial Defects or Raphes -- Disorders Associated with Berry Aneurysms -- Early Aneurysm Formation in Man -- Experimental Arterial Aneurysms -- Other Theories -- 13 Associated Conditions I -- Intracranial Arteriovenous Malformations -- Carotid Artery Stenosis -- Moyamoya Syndrome -- Brain Neoplasms -- Aortic Stenosis (Coarctation) -- Polycystic Kidneys -- Connective Tissue Diseases -- Other Disease States -- Familial Aneurysms -- Pregnancy -- 14 Associated Conditions II -- Infection: โ{128}{156}Mycoticโ{128}{157} Aneurysms -- Syphilitic Aneurysms -- Oncotic Aneurysms -- Traumatic Aneurysms -- Summary -- 15 Variations in Cerebrovascular Anatomy -- 1 Introduction -- 2 Embryology of the Cranial Arteries -- 3 Carotid-Basilar Anastomoses -- Primitive Trigeminal Arteries -- Primitive Otic Arteries -- Primitive Hypoglossal Arteries -- Variants of Primitive Trigeminal, Otic, and Hypoglossal Arteries -- 4 Carotid-Vertebral Anastomoses: The Proatlantal Intersegmental Arteries -- Embryology -- Anatomy and Angiographic Description -- Variant of Proatlantal Intersegmental Arteries -- Collateral Circulation -- 5 Aplasia of the Internal Carotid Artery -- Collateral Circulation -- Transsellar Intercarotid Anastomoses -- Intracranial Intercarotid Anastomosis -- 6 Carotid-Anterior Cerebral Artery Anastomoses -- Embryologie Explanation -- 7 The Superior Orbital Branch of the Middle Meningeal Artery -- Embryology -- Anatomy -- Incidence -- 16 The Cerebrospinal Fluid -- Tests -- The Traumatic Tap -- CSF Pressure -- Summary -- 17 Radiology I Investigation of Intracranial Aneurysms -- Techniques -- Berry Aneurysms -- Some Other Associations -- Giant Intracranial Aneurysms -- Fusiform Arteriosclerotic Aneurysms -- Mycotic Aneurysms -- Neoplastic (Oncotic) Aneurysms -- Traumatic Aneurysms -- 18 Radiology II Aneurysm Rupture and Its Complications -- Complications of the Bleed -- Surgical Complications -- 19 Other Diagnostic Procedures -- Overview -- Acoustic Tests -- Electroencephalography -- Summary -- 20 Training, Manpower, and Research -- Training and Manpower -- Research