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CT PETROUS TEMPORAL BONES

INDICATIONS (1-4)

ct ptb indication

  • Otitis media

  • Chronic ear infection

  • Mastoiditis

  • Congenital anomaly

  • Trauma

  • Vertigo:
    - Chronic, recurrent, tinnitus
    - Chronic, recurrent, unilateral hearing loss
    - Episodic, peripheral, initial exam

  • Head trauma- CSF leak suspected

  • Cholesteatoma, pre-operative planning

  • Cochlear implant candidate, pre-operative planning

  • Hearing loss:
    - Conductive, no mass in ear, initial exam
    - Mixed conductive and sensorineural, initial exam

  • Neoplasm with suspected intracranial or inner ear extension, surgical planning

  • Tinnitus:
    - pulsatile, unilateral or bilateral, suspected retrotympanic lesion on otoscopy (may require angiogram if vascular malformation or variant is suspected)

ct ptb pt prep

PATIENT PREPARATION

  • Patient able to lie still for five minutes

  • Not claustrophobic (sedation may be given)

  • Cognitively capable of following basic instructions

  • Metal artefacts removed from the region of interest

  • No respiratory distress when lying supine

ct ptb anatomy

ANATOMY INCLUDED
 

CT Petrous Temporal Bones- Bone window (axial)
CT Petrous Temporal Bones- Bone window  (coronal)
CT Petrous Temporal Bones- (Pöschl View)
CT Petrous Temporal Bones- Stenvers View

REFERENCES

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  1. Radiopaedia. CT Paranasal Sinuses (protocol). [Internet]. 2010 [updated 23 March 2023, cited 7 April 2024]. Available from https://radiopaedia.org/articles/ct-paranasal-sinus-protocol-1?lang=gb

  2. Som, P. M., & Curtin, H. D. (2011). Head and neck imaging. Mosby Elsevier.

  3. ACR–ASNR–SPR Practice parameter for the performance of computed tomography (CT) of the extracranial head and neck. American College of Radiology. (2023, August). https://www.acr.org/-/media/ACR/Files/Practice-Parameters/CT-Head-Neck.pdf

  4. American College of Radiology (ACR). Appropriateness Criteria. [Internet]. 2022 [Updated 2023, Cited 20 Jan 2024]. Available from https://www.acr.org/Clinical-Resources/ACR-Appropriateness-Criteria

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