Imaging of the Mastoid, Middle Ear, and Internal Auditory Canal After Surgery: What Every Radiologist Should Know

Larson, Timothy L.; Wong, Mathew L.

doi:10.1016/j.nic.2009.06.005

Cited by 13 publications

(7 citation statements)

References 24 publications

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“…Temporal meningoceles or encephaloceles secondary to skull base dehiscence may be congenital, posttraumatic, iatrogenic, or secondary to idiopathic intracranial hypertension (pseudotumor cerebri). 21 Studies have shown an association between SSCD and temporal meningoencephaloceles in patients with idiopathic intracranial hypertension. 22 The pathophysiology of both meningoencephaloceles and SSCD is attributed to the thinning of the skull base and the roof of the SSC due to raised intracranial pressure.…”

Section: Temporal Encephaloceles and Csf Leakmentioning

confidence: 99%

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Beyond Tympanomastoidectomy: A Review of Less Common Postoperative Temporal Bone CT Findings

Carlson

Diehn²,

Lane³

2020

AJNR Am J Neuroradiol

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Section: Temporal Encephaloceles and Csf Leakmentioning

confidence: 99%

“…It is also recommended to look for meningoencephaloceles and SSCD on the contralateral side because bilateral involvement is relatively common in patients with idiopathic intracranial hypertension. 21…”

Section: Temporal Encephaloceles and Csf Leakmentioning

confidence: 99%

Beyond Tympanomastoidectomy: A Review of Less Common Postoperative Temporal Bone CT Findings

Carlson

Diehn²,

Lane³

2020

AJNR Am J Neuroradiol

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“…From the perspective of imaging physics, interpreting CT and MRI imaging for patients with a history of middle ear, mastoid, and neurotologic surgery is also potentially challenging. 6 Compared with CT and MRI, ultrasound is an alternative technology that has been used widely in various medical applications because of its cost efficiency, use of nonionizing radiation, portability, simple signal processing, and real-time capability. Because ultrasound propagates through tissues, reflection occurs at tissue interfaces with acoustic impedance mismatch.…”

Section: Introductionmentioning

confidence: 99%

Postmastoidectomy Effusion Measurement Using a Delay-Line Ultrasound Transducer

et al. 2013

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Mastoidectomy is a surgical procedure for removing mastoid air cells and has been used widely to establish drainage and cleaning infections from the mastoid bone. Computed tomography (CT) and magnetic resonance imaging (MRI) are the primary instruments used to clinically detect mastoid effusion following surgery. This study examines the feasibility of ultrasonography to detect postsurgical mastoid effusion. In vitro ultrasound measurements were conducted on 10 cadavers. For each sample, mastoidectomy was performed, and saline and whole blood samples were injected into the surgical mastoid cavity to simulate different effusion properties. A 2.25-MHz delay-line ultrasound transducer was used to obtain ultrasound backscattered data from the mastoid. The data were used to analyze echo intensity and the backscattered statistics by estimating the scaling and Nakagami parameters of the Nakagami distribution model. The results show that the scaling and Nakagami parameters can successfully detect mastoid effusion. Specifically, the Nakagami parameter is capable of characterizing the mastoid effusion properties. This indicates that ultrasound measurement based on a combination of delay-line transducer and Nakagami parameter estimation is a potential real-time diagnostic tool for evaluating mastoid effusion following mastoidectomy without radiation exposure.

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“…Prior literature has predominantly focused on the appearance of the middle ear after surgery. [4][5][6][7][8][9][10][11] We describe the CT appearance of the EAC after transcanal surgery so that postoperative change can be included in the differential diagnosis, even in the absence of available history, and erroneous diagnoses may be avoided.…”

mentioning

confidence: 99%

CT Findings in the External Auditory Canal after Transcanal Surgery

Mingkwansook

Curtin

Kelly

2015

AJNR Am J Neuroradiol

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BACKGROUND AND PURPOSE:Middle ear surgery is often performed through the external auditory canal, and the CT appearance of the external auditory canal after transcanal middle ear surgery can mimic erosive pathology such as carcinoma, external auditory canal cholesteatoma, or necrotizing external otitis. We reviewed the CT findings in a group of patients following transcanal surgery to highlight this potential pitfall in interpretation.

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Imaging of the Mastoid, Middle Ear, and Internal Auditory Canal After Surgery: What Every Radiologist Should Know

Cited by 13 publications

References 24 publications

Beyond Tympanomastoidectomy: A Review of Less Common Postoperative Temporal Bone CT Findings

Beyond Tympanomastoidectomy: A Review of Less Common Postoperative Temporal Bone CT Findings

Postmastoidectomy Effusion Measurement Using a Delay-Line Ultrasound Transducer

CT Findings in the External Auditory Canal after Transcanal Surgery

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