- Photon-Counting CT in the Head and Neck: Current Applications and Future Prospects
This article reviews the current clinical application of PCD-CT in head and neck imaging, specifically the temporal bones, facial bones, and paranasal sinuses. PCD-CT offers improved spatial resolution, better iodine contrast-to-noise ratio, reduced artifact, and lower radiation dose.
- Does CISS MRI Reliably Depict the Endolymphatic Duct in Children with and without Vestibular Aqueduct Enlargement?
In this retrospective review of temporal bone high-resolution CT and CISS MR imaging of 98 hearing-impaired children, the authors found that the CISS MR imaging technique commonly used for inner ear evaluation performs poorly overall at resolving the endolymphatic duct and underdiagnoses enlarged vestibular aqueduct. If the endolymphatic duct is easily seen on CISS imaging, there is a .99% probability that the vestibular aqueduct is enlarged.
- Sinonasal (Schneiderian) Tumors in the Temporal Bone: Case Series and Systematic Review
This systematic review of patients with middle ear sinonasal-type tumors with a history of primary sinonasal tumors shows a tumor pattern supporting the hypothesis that the Eustachian tube may facilitate the spread of sinonasal neoplasms from the sinonasal cavity to the temporal bone.
- Efficacy of MR Neurography of Peripheral Trigeminal Nerves: Correlation of Sunderland Grade versus Neurosensory Testing
The current diagnostic reference standard for peripheral trigeminal nerve injuries is neurosensory testing in combination with clinical findings to determine treatment. MRN provides an alternative method for the diagnosis and staging of patients with PTN because of its ability to delineate anatomy and the exact location of injury. This study correlates injury grading based on NST and MRN, demonstrating similar rates of agreement with surgical findings in lower-grade injuries but higher rates of agreement between MRN and surgical findings than NST in higher-grade injuries.
- Cervical Osteomyelitis and Diskitis as a Complication of Neopharyngeal Breakdown: A Multisite Case Series Review
This case series of 11 patients status post laryngectomy/pharyngectomy describes the imaging findings of pharyngoesophageal wall breakdown with subsequent cervical spine infection. The authors show that MRI is more sensitive for spine infection in these patients presenting with neck, fever, and serologic evidence of infection.
- CT of the Larynx: Is an Additional High-Resolution Acquisition Necessary for Diagnostic Accuracy?
The purpose of this study was to determine whether reformatted laryngeal images derived from a standard neck CT acquisition can replace a separate dedicated high-resolution laryngeal acquisition. In 200 patients, the authors found a discrepancy in nearly one-quarter of the interpretations. Both up-staging and down-staging errors were made with the standard neck CT protocol and were critical in defining the optimal therapeutic approach. The authors concluded that the addition of focused images of the larynx after a second contrast bolus and a second acquisition sequence improves the radiologic staging of laryngeal tumors.
- Prevalence of Cochlear-Facial and Other Non-Superior Semicircular Canal Third Window Dehiscence on High-Resolution Temporal Bone CT
This study of 500 patients found the prevalence of non-SSCD on high-resolution CT in asymptomatic individuals to be 1.6% for CFD and 8.0% for JVD as compared with the rate in patients with audiologic or vestibular symptoms (2.9% for CFD and 7.8% for JVD). There was no statistically significant difference in the rates of radiologic findings between patients with reported symptoms suggestive of a possible third window syndrome and those without auditory or vestibular symptoms.
- MR Imaging Appearance of Ruptured Rathke Cleft Cyst and Associated Bone Marrow Enhancement
This clinical case series of 7 patients illustrates the imaging finding of enhancing basisphenoid bone marrow below the sella in cases of ruptured RCC. The mucin leaking out of the ruptured RCC can trigger a cascade of surrounding inflammation, which manifests as abnormal bone marrow enhancement.
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