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."

1: General Aspects of Laryngeal Cancer.- 1. Introduction.- 1.1. Incidence.- 1.2. Predisposing factors.- 2. TNM staging.- 2.1. Introduction.- 2.2. Clinical classification.- 3. Diagnostic aspects.- 3.1. History.- 3.2. External examination.- 3.3. Laryngoscopy.- 4. Therapeutic options.- 4.1. Radiotherapeutic options.- 4.1.1. Technique.- 4.1.2. Prognostic factors of irradiation treatment.- 4.1.3. Complications due to radiation therapy.- 4.2. Surgical options.- 4.2.1. Laser therapy and microsurgical stripping.- 4.2.2. Laryngofissure and cordectomy.- 4.2.3. Vertical partial laryngectomy.- 4.2.4. Antero-frontal laryngectomy for excision of the anterior commissure.- 4.2.5. Supraglottic laryngectomy.- 4.2.6. (Wide-field) total laryngectomy.- 4.3. Chemotherapeutic options.- 5. Therapeutic management.- Tl- and T2-glottic carcinomas.- T1- and T2-subglottic carcinomas.- T2- and T2-supraglottic carcinomas.- T3- and T4-laryngeal cancer.- Nodal metastasis.- References.- 2: The Patterns of Growth And Spread of Laryngeal Cancer.- 1. Introduction.- 2. Spread of cancer in various regions.- 2.1. Cancer of the supraglottic region.- 2.2. Cancer of the glottic region.- 2.3. Cancer of the subglottic region.- 3. Cartilage invasion.- 4. Lymphatic spread.- 5. Vascular and perineural invasion.- References.- 3: The Radiological Examination of the Larynx.- 1. Introduction.- 2. Phonation manoeuvers.- 3. Frontal tomography.- 4. Contrast laryngography.- 5. Computed tomography.- 6. CT versus conventional radiological techniques.- 6.1. CT versus conventional tomography.- 6.2. CT versus contrast laryngography.- References.- 4: General Aspects of MR Imaging.- 1. Introduction.- 2. Technical principles.- 2.1. Properties of atomic nuclei.- 2.2. Resonance.- 2.3. Behaviour of a sample of nuclei.- 2.4. Proton density, tissue characteristics.- 2.5. Spin echo technique.- 3. The equipment.- 3.1. Magnet.- 3.2. Gradient system.- 3.3. Coils.- 3.4. Computer.- 4. Disadvantages of MR imaging.- 4.1. Claustrophobia.- 4.2. Contra-indications.- References.- 5: MR Imaging Techniques of the Larynx.- 1. Surface coils.- 1.1. Coil selection.- 2. Parameters.- 2.1. Pulse sequences.- 2.2. Slice thickness.- 2.3. Slice direction.- 2.4. Matrix size.- 2.5. Number of signal measurements.- 3. Artifacts.- 3.1. Motion artifacts.- 3.2. System artifacts.- 3.3. Chemical shift artifacts.- 3.4. Artifacts due to ferromagnetic implants.- 4. Performance of the laryngeal examination.- References.- 6: MR Imaging of the Normal Larynx.- 1. Introduction.- 2. MR imaging of laryngeal structures.- 2.1. Laryngeal skeleton.- 2.2. Laryngeal compartments.- 3. Landmarks.- 3.1. Hyoid bone.- 3.2. Aryepiglottic fold.- 3.3. False vocal cords.- 3.4. True vocal cords.- 3.5. Subglottic level.- References.- 7: MR Imaging of Laryngeal Cancer.- Abstract.- 1. Introduction.- 2. Materials and methods.- 3. Case reports.- Case 1.- Case 2.- Case 3.- Case 4.- Case 5.- Case 6.- Case 7.- 4. Discussion.- 5. Conclusions.- References.- 8: MR imaging of Normal and Cancerous Laryngeal Cartilages. Histopathological Correlation.- Abstract.- 1. Introduction.- 2. Materials and methods.- 3. Results.- 3.1. Epiglottic cartilage.- 3.2. Thyroid cartilage.- 3.3. Cricoid cartilage.- 3.4. Arytenoid cartilage.- 4. Discussion.- 5. Conclusions.- References.- 9: Dagnosis of Laryngeal Cartilage Invasion by Cancer. Comparison of CT and MR Imaging.- Abstract.- 1. Introduction.- 2. Materials and methods.- 2.1. Imaging techniques.- 2.2. Image interpretation.- 2.3. Pathological findings.- 3. Results.- 3.1. Epiglottic cartilage.- 3.2. Thyroid cartilage.- 3.3. Arytenoid cartilage.- 3.4. Cricoid cartilage.- 3.5. Group of patients for which no pathologic correlation was available.- 3.6. Movement artifacts.- 4. Discussion.- 4.1. Elastic cartilage: epiglottic cartilage.- 4.2. Hyaline cartilage: thyroid, cricoid and arytenoid cartilages.- 5. Summary.- References.- 10: MR Findings of Cartilage Invasion by Laryngeal Cancer. Value in Predicting Outcome of Radiation Therap...