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Spacing

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"In step-and-shoot scanning, the CT tube/detector performs a complete revolution around a stationary patient (shoot) generating a single axial image. The table/gantry then advances a specific distance (step) and the process is repeated to acquire the next axial image. Traditionally, these were 10 mm slices through the cerebrum and 5 mm slices through the base-of-skull and posterior fossa."

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List Punctuation

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"always consider performing a non-contrast CT brain prior to a contrast-enhanced CT brain. Refer to local policy to determine whether a non-contrast CT brain is still necessary in patients that have recently undergone a non-contrast CT brain."

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Acronyms

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"mild (GCS 13-15) but imaging indicated by clinical decision rule"

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"moderate or severe (GCS"

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"AP and Lateral"

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"The axial plane can then be chosen to match any desired plane, regardless of the position the patient's head was in when scanned. Increasingly, the standard axial plane is being set to match that of MRI scans often parallel to the tuberculum sellae-occipital protuberance line (which is close to parallel to the AC-PC line). Coronal and sagittal reconstructions are then usually at right angles to this."

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EG List And

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"inciting activity/event e.g. sexual activity, exertion, or position"

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"In addition to various planes, the images can also be reconstructed using different algorithms (e.g. bone algorithm or soft-tissue algorithm) and viewed with different windows (e.g. brain window, subdural window, or bone window) to emphasise various tissue characteristics."

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Strong

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"respiration phase"

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"suspended "

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Headings Valid

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Expected headings