Question:

Which of the following is considered the modality of choice for imaging assessment of orbital fractures?
1. Thin slice multi-detector computed tomography
2. Ultrasound
3. Magnetic resonance imaging
4. Nuclear medicine
5. Conventional radiography





Answer:

The correct answer for the question "Which of the following is considered the modality of choice for imaging assessment of orbital fractures?" is:

1. Thin slice multi-detector computed tomography



Explanation

a. Thin slice multi-detector computed tomography (Given the accessibility and accuracy of evaluation of pertinent orbital structures, thin-slice multi-detector CT examination has become the radiological modality of choice, and generally the only required modality, for assessment of orbital fractures.)

b. Ultrasound (Ultrasound is not a commonly used modality in the setting of orbital trauma secondary to insensitivity in assessment of fractures, difficulty of soft tissue differentiation, relative difficulty in performing the procedure, and the operator-dependent nature of the examination.)

c. Magnetic resonance imaging (MRI has been found to be superior to CT for assessment of intraorbital soft tissue injuries including injury of the optic nerve. However, MRI has many well known limitations including insensitivity to assessment of bone fragments and certain foreign materials including wood and certain types of glass. MRI is also limited by contraindications including the presence of a ferromagnetic foreign body in the vicinity of the orbit and accessibility issues in the setting of severe trauma.)

d. Nuclear medicine (Given the accessibility and accuracy of evaluation of pertinent orbital structures, thin-slice multi-detector CT examination has become the radiological modality of choice, and generally the only required modality, for assessment of orbital fractures.)

e. Conventional radiography (Given the accessibility and accuracy of evaluation of pertinent orbital structures, thin-slice multi-detector CT examination has become the radiological modality of choice, and generally the only required modality, for assessment of orbital fractures.)



From the manuscript:
Orbital Roof "Blow-in" Fracture: A Case Report and Review
Radiology Case. 2009 Dec; 3(12):25-30


This article belongs to the Neuro section.




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From the manuscript

Orbital Roof "Blow-in" Fracture: A Case Report and Review

Free full text article: Orbital Roof

Abstract
We report a relatively rare case of an essentially isolated orbital roof "blow-in" fracture in a pediatric patient. A 13-year-old male presented with headache and nausea following blunt facial trauma sustained during a skate boarding accident. CT head revealed soft tissue swelling and an abnormal bony density in the superior, posterior right orbital region. Follow-up CT orbits revealed a comminuted orbital roof "blow-in" fracture with involvement of the ethmoid air cells and two tiny foci of intracranial air. Expert consultation revealed normal ophthalmologic and neurologic examination; conservative management was recommended. The case report is followed by a brief overview of orbital fractures including pertinent radiographic considerations.






References



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