Como avaliar os 12 Pares Cranianos na Ressonância Magnética e Tomografia

In this comprehensive lesson, we will unravel the evaluation of the 12 Cranial Nerves through imaging exams, focusing on Magnetic Resonance Imaging (MRI) and Computed Tomography (CT). Evaluating the cranial nerves can seem challenging, as we often cannot visualize the nerve in its entirety. Therefore, understanding the radiological anatomy, the cranial foramina, and especially the signs of muscle denervation (in the acute, subacute, and chronic phases) is fundamental for an accurate diagnosis. We will go through each of the cranial nerve pairs (from the Olfactory to the Hypoglossal), showing practical cases, anatomical pathways, schwannomas, meningiomas, perineural dissemination, and classic syndromes such as Gradenigo and Tolosa-Hunt. Essential content for radiologists, residents, and professionals working in the head and neck region! 📌 VIDEO CHAPTERS (Navigate through the content): (Tip: Replace 00:00 with the exact time of your video) 00:00 - Introduction to Cranial Nerves in Radiology 00:00 - How to See Nerve Injury: The Radiologist's View 00:00 - Signs of Muscle Denervation (Acute, Subacute and Chronic Phases) 00:00 - Olfactory Nerve (I Pair): Olfactory Fossa, Cribriform Plate and Esthesioneuroblastoma 00:00 - Optic Nerve (II Pair): Anatomy, Optic Neuritis and Meningioma 00:00 - Oculomotor (III), Trochlear (IV) and Abducens (VI) Nerves: Extrinsic Musculature of the Orbit 00:00 - Trigeminal Nerve (V Pair): The big star! (V1, V2, V3 and Trigeminal Neuralgia) 00:00 - Facial Nerve (VII Pair) and Vestibulocochlear Nerve (VIII Pair): Internal Auditory Canal 00:00 - Glossopharyngeal (IX), Vagus (X) and Accessory (XI) Nerves: Jugular Foramen 00:00 - Hypoglossal Nerve (XII Pair): Hypoglossal Canal and Tongue Atrophy 00:00 - Clinical Cases and Syndromes (Gradenigo Syndrome, Tolosa-Hunt Syndrome and Perineural Dissemination) 00:00 - Conclusion and Final Tips 🧠 What you will learn in this video: How to identify indirect signs of nerve injury (edema, contrast enhancement and fatty muscle replacement). The best MRI protocols and sequences (such as T2 FIESTA/CISS and T1 with contrast) for neural evaluation. The detailed anatomical pathway: from the nuclei in the brainstem, through the cisterns, base of the skull to the target musculature. Differential diagnosis of expansive lesions: Schwannomas vs. Meningiomas vs. Malignant tumors. 💡 Enhance your Head and Neck reports: If you want to delve even deeper and master the anatomy and pathologies of this complex region, check out my specialized mentorship program in Head and Neck MRI: 🔔 Don't forget to subscribe to the channel! Leave a like if this lesson helped you and comment below which cranial nerve you find most challenging to evaluate in imaging exams. Dr. Hercules Kozorosky Radiologist specializing in Head and Neck My Social Media: Instagram:   / herculesrccp   LinkedIn:   / hercules-.  . Facebook:   / herculesrccp   Telegram: https://t.me/radiologiaccp