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Neuroimaging Clinics of North America Nov 2022Temporal bone anatomy is highly complex, with a complicated configuration of minute anatomic structures housed in a dense osseous structure. Nevertheless, a robust... (Review)
Review
Temporal bone anatomy is highly complex, with a complicated configuration of minute anatomic structures housed in a dense osseous structure. Nevertheless, a robust understanding of this anatomy is essential for clinicians, who must accurately diagnose and describe the various pathologies that exist in this region. In this article, we provide a comprehensive overview of temporal bone anatomy, ranging from its large components to its smallest foramina, canals, and clefts.
Topics: Humans; Temporal Bone; Tomography, X-Ray Computed
PubMed: 36244722
DOI: 10.1016/j.nic.2022.07.010 -
Neuroimaging Clinics of North America Feb 2022Evaluation of the postoperative temporal bone can be difficult given the complex anatomy of this region and the myriad surgical approaches for management of a variety of... (Review)
Review
Evaluation of the postoperative temporal bone can be difficult given the complex anatomy of this region and the myriad surgical approaches for management of a variety of conditions. This article provides an understanding of common postsurgical changes of the temporal bone and their typical imaging appearances. Ultimately, greater radiologist knowledge of postoperative temporal bone imaging findings will help to serve patients and referring clinicians with prompt diagnosis and recognition of expected postintervention changes compared with postoperative complications and/or disease recurrence.
Topics: Humans; Postoperative Complications; Temporal Bone; Tomography, X-Ray Computed
PubMed: 34809837
DOI: 10.1016/j.nic.2021.08.006 -
Radiographics : a Review Publication of... 2021The anatomy of the temporal bone is complex, and postoperative imaging evaluation of this bone can be challenging. Surgical approaches to the temporal bone can be... (Review)
Review
The anatomy of the temporal bone is complex, and postoperative imaging evaluation of this bone can be challenging. Surgical approaches to the temporal bone can be categorized didactically into tympanoplasty and ossicular reconstruction, mastoidectomy, and approaches to the cerebellopontine angle and internal auditory canal (IAC). In clinical practice, different approaches can be combined for greater surgical exposure. Postoperative imaging may be required for follow-up of neoplastic lesions and to evaluate unexpected outcomes or complications of surgery. CT is the preferred modality for assessing the continuity of the reconstructed conductive mechanism, from the tympanic membrane to the oval window, with use of grafts or prostheses. It is also used to evaluate aeration of the tympanic and mastoid surgical cavities, as well as the integrity of the labyrinth, ossicular chain, and tegmen. MRI is excellent for evaluation of soft tissue. Use of a contrast-enhanced fat-suppressed MRI sequence is optimal for follow-up after IAC procedures. Non-echo-planar diffusion-weighted imaging is optimal for detection of residual or recurrent cholesteatoma. The expected imaging findings and complications of the most commonly performed surgeries involving the temporal bone are summarized in this review. RSNA, 2021.
Topics: Cholesteatoma, Middle Ear; Humans; Mastoid; Retrospective Studies; Temporal Bone; Treatment Outcome
PubMed: 33739892
DOI: 10.1148/rg.2021200126 -
Radiographics : a Review Publication of... 2020Temporal bone trauma is frequently encountered in the emergency department. Technologic advances have enabled timely acquisition of thin-section images and multiplanar... (Review)
Review
Temporal bone trauma is frequently encountered in the emergency department. Technologic advances have enabled timely acquisition of thin-section images and multiplanar reconstructions such that temporal bone anatomy can be evaluated in great detail, with excellent delineation of fractures. The temporal bone is composed of a myriad of tiny structures, including many fissures and canals, that must be distinguished from true fractures. In addition, injury to important structures may result in serious complications such as hearing loss, dizziness, imbalance, perilymphatic fistula, cerebrospinal fluid leakage, facial nerve paralysis, and vascular injury. Structures that should be examined include the tympanic cavity and tegmen, the ossicular chain, the bony labyrinth, the facial canal, the internal carotid artery, the jugular foramen and venous sinuses, and the intracranial contents. Radiologists should be familiar with the anatomy of the temporal bone and be able to describe any pathologic findings and make suggestions to referring clinicians to guide management and determine the prognosis. The authors describe the typical CT and MRI appearances of temporal bone trauma, entities that mimic this injury and thus must be differentiated, and compulsory points for evaluating clinically relevant associated complications. Instruction is provided for acquiring the diagnostic skills necessary to report suggested injury status, complications, and likely sequelae to clinicians.RSNA, 2020.
Topics: Diagnosis, Differential; Humans; Magnetic Resonance Imaging; Skull Fractures; Temporal Bone; Tomography, X-Ray Computed
PubMed: 32442046
DOI: 10.1148/rg.2020190023 -
Neuroimaging Clinics of North America Feb 2019Imaging plays an important role in the evaluation of temporal bone trauma. Certain imaging findings can significantly change patient management or change surgical... (Review)
Review
Imaging plays an important role in the evaluation of temporal bone trauma. Certain imaging findings can significantly change patient management or change surgical approach. Precise knowledge of clinical or surgical management can guide the review of imaging to detect these key findings. This article reviews the clinical and imaging findings as well as management of complications from temporal bone trauma, including hearing loss, vertigo, perilymphatic fistula, cerebrospinal fluid leak, facial nerve injury and vascular injury.
Topics: Humans; Magnetic Resonance Imaging; Temporal Bone; Tomography, X-Ray Computed
PubMed: 30466637
DOI: 10.1016/j.nic.2018.08.005 -
Radiologic Clinics of North America Jan 2015A variety of congenital, infectious, inflammatory, vascular, and benign and malignant neoplastic pathology affects the temporal bone. Knowledge of normal temporal bone... (Review)
Review
A variety of congenital, infectious, inflammatory, vascular, and benign and malignant neoplastic pathology affects the temporal bone. Knowledge of normal temporal bone anatomy and space-specific differential diagnoses is key to imaging interpretation of temporal bone. Correlation with clinical history and physical examination is vital to making the correct diagnosis or providing an appropriate differential. Computed tomography and magnetic resonance imaging are complementary imaging modalities in the evaluation of temporal bone abnormalities.
Topics: Ear Canal; Ear, Inner; Facial Nerve; Humans; Magnetic Resonance Imaging; Temporal Bone; Tomography, X-Ray Computed
PubMed: 25476172
DOI: 10.1016/j.rcl.2014.09.010 -
Radiologic Technology 2015Computed tomography (CT) of the temporal bone is performed to evaluate trauma, tumors, sinuses, the skull base, or otic structures. This article discusses temporal bone... (Review)
Review
Computed tomography (CT) of the temporal bone is performed to evaluate trauma, tumors, sinuses, the skull base, or otic structures. This article discusses temporal bone anatomy and reviews CT technique for a temporal bone examination. Some conditions associated with temporal bone examinations, auditory symptoms, and postoperative changes also are discussed.
Topics: Ear Diseases; Fractures, Bone; Humans; Patient Positioning; Radiographic Image Enhancement; Skull Fractures; Temporal Bone; Tomography, X-Ray Computed
PubMed: 25995412
DOI: No ID Found -
Head and Neck Pathology Sep 2018The temporal bone is one of the more complex structures at the skull base that houses the hearing and vestibular organs, numerous nerves, and vessels. A host of... (Review)
Review
The temporal bone is one of the more complex structures at the skull base that houses the hearing and vestibular organs, numerous nerves, and vessels. A host of inflammatory and neoplastic processes can occur within the temporal bone that often necessitate permanent and frozen section pathologic examination. A number of simple to complex surgical procedures are used to manage temporal bone pathology. This chapter will provide a brief overview of normal temporal bone anatomy, common surgical approaches, normal histology, and indications for pathologic examination.
Topics: Ear; Humans; Otorhinolaryngologic Surgical Procedures; Temporal Bone
PubMed: 30069845
DOI: 10.1007/s12105-018-0926-2 -
Neuroimaging Clinics of North America Aug 2014Temporal bone trauma is commonly seen in patients with craniofacial injury and can be detected using multidetector computed tomography. A thorough understanding of the... (Review)
Review
Temporal bone trauma is commonly seen in patients with craniofacial injury and can be detected using multidetector computed tomography. A thorough understanding of the different types of temporal bone fracture patterns is needed to accurately describe the trajectory of injury as well as anticipated complications. Fractures should be described based on direction, segment of temporal bone involved, as well as involvement of the otic capsule. More importantly, the radiologist plays an integral role in identifying complications of temporal bone injury, which often have significant clinical implications.
Topics: Humans; Multidetector Computed Tomography; Skull Fracture, Basilar; Temporal Bone
PubMed: 25086807
DOI: 10.1016/j.nic.2014.03.003 -
Neuroimaging Clinics of North America May 1996Ameliorated computed tomography techniques and new magnetic resonance sequences have led to an important improvement in temporal bone imaging. Computed tomography is... (Review)
Review
Ameliorated computed tomography techniques and new magnetic resonance sequences have led to an important improvement in temporal bone imaging. Computed tomography is still the method of choice for imaging of temporal bone fractures, middle ear disease, and conductive hearing loss, although magnetic imaging can add important information. Patients with lesions of the cerebellopontine angle; internal auditory canal; inner ear; and, in general, all patients with sensorineural hearing loss, vertigo, and tinnitus are best examined with magnetic resonance imaging. In some cases, however, such as congenital malformations and petrous apex lesions, magnetic resonance imaging and computed tomography are complementary. The value of both modalities is discussed.
Topics: Ear; Ear Diseases; Humans; Magnetic Resonance Imaging; Skull Fractures; Temporal Bone; Tomography, X-Ray Computed
PubMed: 8726907
DOI: No ID Found