Axial thinsection ct image of the temporal bone in a motor vehicle accident victim and complex hearing loss. Diagnosis and surgical intervention in this area require sufficient clinical information and a thorough knowledge of the anatomy of the temporal bone 1. Iac internal auditory canal, ica internal carotid artery, lscc. Pdf basic and advanced temporal bone anatomy using. Axial ct images show the normal anatomy of the temporal bone from inferior a to superior g. Mr with and without infusion provided excellent delineation of softtissue tumor margins, muscle infiltration. The middle ear and the bony labyrinth are breached. Interactive webbased learning module on ct of the temporal. Each temporal bone is composed of five osseous parts. Computed tomography imaging technique and normal computed. Ct imaging of temporal bone can be done by mdct or cone beam ct.
Pdf to master the detailed ct anatomy of the middle and inner ear to make use of several recognizable figures as landmarks for positioning. The lower portion of the bone articulates with the mandible, forming the temporomandibular joint of the jaw. The temporal bone contributes to the lower lateral walls of the skull. This gallery of images presents the anatomy of the temporal bone by means of ct scan reconstructions. The detailed ct anatomy of the temporal bone was documented, complemented by images from live patients. Pdf basic and advanced temporal bone anatomy using different. Ct is the imaging modality of choice for most of the pathologic conditions of the temporal bone, especially for those of the middle ear. How to read a temporal bone ct temporal bone made ridiculously simple a systematic axial approach thank each one of you for making it happen. Temporal bone or skull base erosion were best seen on ct at bone algorithm.
Understanding the anatomy of the temporal bone has always been, is and will be a difficult task for doctors of various specialities. Anatomy and inflammatory and neoplastic processes1 from a clinicalradiologic standpoint, there are a limited number of structures and disease entities in the temporal bone with which one must be familiar in order to proficiently interpret a computed tomographic or. The major sutures are the coronal suture, sagittal suture, lambdoid suture and squamosal sutures. Disease processes in the pontine angle and in the internal acoustic meatus are not discussed. The temporal bone is one of the most important calvarial and skull base bones. Basic and advanced temporal bone anatomy using different figures as landmarks. The temporal bone is very complex and consists of five parts 1,2 squamous part. It contains the middle and inner portions of the ear, and is crossed by the majority of the cranial nerves. Computed tomography temporal bone anatomy technique.
The frontal, parietal, temporal and occipital bones are joined at the cranial sutures. Coronal ct scan demonstrating details of temporal bone. Several intrinsic channels, intrinsic fissures, and extrinsic sutures are often apparent on ct images and can mimic. Learn about the anatomy of the skull bones and sutures as seen on ct images of the brain. Pdf anatomical characteristics of temporal bone on. For this purpose, dry skulls with intact ossicles were scanned in axial and coronal projections. A fracture line arrow traverses the temporal bone obliquely, with features of both transverse and longitudinal type fractures. Coronal ct image through the temporal bone at the level. Computed tomography ct of the temporal bone is an important diagnostic imaging tool. Some structures are discussed in more detail with emphasis on related pathology.
Separates the descending portion from the horizontal tympanic segment. The temporal bone is situated on the sides and the base of the cranium and lateral to the temporal lobe of the cerebrum. This atlas allows you to scroll through ct slices of the temporal bone in four different planes. The middle ear consists of the tympanic cavity and.658 540 123 880 985 1463 1183 759 801 1662 268 543 1014 185 868 1656 1153 94 1033 153 43 1532 1409 1302 830 179 96 872 1091 521 793 644 1375