This diagnostic image displays a high-resolution Volume Rendering Technique (VRT) reconstruction of a human temporal bone specimen, presented in three standard anatomical planes: coronal, sagittal, and axial. The reconstruction highlights the complex morphology of the petrous and squamous portions of the temporal bone. The coronal view reveals the vertical orientation of the squamous part and the styloid process extending inferiorly, while showing the porous trabecular nature of the mastoid region. The sagittal view illustrates the anteroposterior depth and the density variations between the cortical surface and the internal cancellous bone. The axial view provides a superior perspective, showcasing the internal acoustic canal, various foramina, and the irregular contours of the petrous ridge. This visual is intended for educational purposes in radiology and otolaryngology, demonstrating the capabilities of advanced CT scanning protocols (such as MS-CT and FD-CT) in visualizing minute anatomical structures, bony landmarks, and surface textures of the ear's structural foundation.

This diagnostic image consists of a series of four high-resolution axial computerized tomography (CT) scans (labeled a–d) of the human skull base, displayed in a bone window. The sequence demonstrates the surgical anatomy of the temporal bone, specifically highlighting the mastoid emissary vein (MEV) and its associated bony canal. In images a, b, and c, yellow arrows trace the course of the mastoid emissary vein as it traverses the mastoid part of the temporal bone. Image d, designated as 'Slice B', identifies the mastoid emissary foramen on the outer cortex. Key landmarks visible across all slices include the petrous and squamous parts of the temporal bone, the mastoid air cells, the sphenoid bone with the sella turcica, and the occipital bone. Annotations in frame d use Greek letters gamma (γ) and delta (δ) to indicate specific measurement points on the inner and outer cortical surfaces, respectively. This visual serves as an anatomical guide for preoperative planning in retrosigmoid approaches to the posterior cranial fossa, helping to avoid intraoperative hemorrhage from emissary veins.

Two-panel axial non-contrast CT scan of the head in bone window settings demonstrating a right petrous temporal bone fracture. Panel A illustrates the fracture line traversing the petrous pyramid with involvement of the internal carotid artery (ICA) canal. Panel B shows the extension of the fracture into the jugular fossa walls. White arrows indicate the fracture site. The fracture is characterized as a transverse pattern, which is clinically significant due to its violation of the otic capsule, the dense bony housing of the inner ear. The images display disruption of the bony architecture surrounding the cochlea and vestibular system, posing a high risk for sensorineural hearing loss and facial nerve injury. The surrounding mastoid air cells appear largely aerated, and the squamous part of the temporal bone remains intact. This diagnostic image is representative of high-impact craniofacial trauma in adult patients.