CT
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Author:
Mikael Häggström [notes 1]
Contents
By location
With contrast
General planning
Upon receiving a referral for a CT, generally check:
- Who is the ordering individual?
- Where: From which unit or department?
- Requested investigation
- Targets: Suspected diseases or other questions or requests
- Patient history
- Possible earlier imaging that can already answer the questions?
Consider if another modality is better for the questions at hand.
Choose the proper CT settings
- Contrast CT and/or non-contrast.
- Include thin slices (0.5 to 1.5 mm)[1] if the skeleton needs to be evaluated.
General post-imaging approach
- Check the order form
- Who is the ordering individual?
- Where: From which unit or department?
- Patient history
- Requested investigation
- Targets:
- Earlier investigations, and their findings
- Examine the images at hand, including:
- Requested targets from the referral, or suspected diseases or other questions
- Basic screening, whose targets vary with mainly anatomic location (see locations above), but broadly include:
- Soft tissues, mainly for tumors or other expansions such as hematomas (see CT of muscle hematoma)
- Skeleton, mainly for fractures (see CT of fractures and tumors (see CT of bone tumors).
- Complement with reconstructions where needed, such as volume renderings or thinner slices.
- Write report
- See also: General notes on reporting
Finally, check one extra time if the reply corresponds to the targets at hand.
Hounsfield scale
Location-unspecific diseases
Notes
- ↑ For a full list of contributors, see article history. Creators of images are attributed at the image description pages, seen by clicking on the images. See Radlines:Authorship for details.
References
- ↑ Maetani, Kazuhide; Namiki, Jun; Matsumoto, Shokei; Matsunami, Katsutoshi; Narumi, Atsushi; Tsuneyoshi, Toshimi; Kishikawa, Masanobu (2016). "Routine Head Computed Tomography for Patients in the Emergency Room with Trauma Requires Both Thick- and Thin-Slice Images ". Emergency Medicine International 2016: 1–4. doi: . ISSN 2090-2840.