Radiation Dose Optimization in CT Using Automatic Patient Positioning.
Study Details
Study Description
Brief Summary
To evaluate the effect on radiation dose using intelligent camera positioning in comparison to manual positioning by the radiology assistant.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
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Detailed Description
The positioning of the patient at the beginning of every CT examination has an major influence on the image quality and especially on the respective effective patient dose in the CT scan. If the patient position is closer to the X-ray tube, the patient dose increases significantly and if the vertical patient position is chosen too far away from the X-ray tube, the applied dose decreases, but also the image quality.
In a retrospective observational study, patients were examined on the CT scanner Somatom X.Cite and divided into two groups, one group was with intelligent camera positioning and the other with manual positioning.
The patients received their CT scan at the Institute Radiology and Nuclear Medicine at the Nuremberg North Hospital strictly according to the clinical indication and without influence of the study.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| experimental group patients positioned with 3D camera |
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| control group patients positioned by experienced radiology assistants |
Outcome Measures
Primary Outcome Measures
- Effective dose [10 months]
the absorbed dose to different organs of the body
Eligibility Criteria
Criteria
Inclusion Criteria:
Only patients with a clinical indication for a CT Scan
Exclusion Criteria:
renal insufficiency, manifest hyperthyroidism and pregnancy
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Institute of Radiology and Nuclear Medicine | Nuremberg | Bavaria | Germany | 90419 |
Sponsors and Collaborators
- Dr. Panagiota Manava
Investigators
- Study Director: Michael M. Lell, Prof. Dr., Department of Radiology and Nuclear Medicine, Klinikum Nuernberg, Paracelsus Medical University, Germany
Study Documents (Full-Text)
None provided.More Information
Publications
- Booij R, Budde RPJ, Dijkshoorn ML, van Straten M. Accuracy of automated patient positioning in CT using a 3D camera for body contour detection. Eur Radiol. 2019 Apr;29(4):2079-2088. doi: 10.1007/s00330-018-5745-z. Epub 2018 Oct 10.
- Dane B, O'Donnell T, Liu S, Vega E, Mohammed S, Singh V, Kapoor A, Megibow A. Radiation dose reduction, improved isocenter accuracy and CT scan time savings with automatic patient positioning by a 3D camera. Eur J Radiol. 2021 Mar;136:109537. doi: 10.1016/j.ejrad.2021.109537. Epub 2021 Jan 12.
- Kaasalainen T, Palmu K, Reijonen V, Kortesniemi M. Effect of patient centering on patient dose and image noise in chest CT. AJR Am J Roentgenol. 2014 Jul;203(1):123-30. doi: 10.2214/AJR.13.12028.
- Marsh RM, Silosky MS. The effects of patient positioning when interpreting CT dose metrics: A phantom study. Med Phys. 2017 Apr;44(4):1514-1524. doi: 10.1002/mp.12137. Epub 2017 Mar 17.
- Saltybaeva N, Schmidt B, Wimmer A, Flohr T, Alkadhi H. Precise and Automatic Patient Positioning in Computed Tomography: Avatar Modeling of the Patient Surface Using a 3-Dimensional Camera. Invest Radiol. 2018 Nov;53(11):641-646. doi: 10.1097/RLI.0000000000000482.
- CT_2021