Which of the following is true regarding ct exams of the spine?
1. contrast is usually not administered to rule out a herniated disk.
2. entire thoracic spine is not routinely scanned with transverse ct slices.
3. sagittal and coronal images of an adult spine may not be directly collected from a ct scan.

1.

Explanation:

1. To rule out an herniated disk usually an MRI is taken, nonetheless if CT scan is done, the radiation produced by this technique projects a detailed picture that is able to discriminate an herniated disc without the need of using contrast.

2. If the doctor needs an entire thoracic spine CT scan, the best projection is transverse or axial, in that way the spine can be seen from upwards to downwards in  millimeter slices to check every detail and seek for any posible injury.

3. CT scan or computerized tomography actually produce images for all the projections, including Sagital and Coronal images,  as the scanner emits beams through the body and the whole part that is being scanned is radiated, then the images can be reconstructed in a 3D cross sectional picture, giving us the view that we wanted to see.

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