Dual-room CT with a sliding gantry for intraoperative imaging: feasibility and workflow analysis of an interdisciplinary concept

  • Markus LenskiEmail author
  • Johann Hofereiter
  • Nicole Terpolilli
  • Torleif Sandner
  • Stefan Zausinger
  • Jörg-Christian Tonn
  • Friedrich-Wilhelm Kreth
  • Christian Schichor
Original Article



Currently, intraoperative computed tomography (iCT) is a scarcely used technique in neurosurgery. It remains unclear whether this phenomenon is explained by unfavorable iCT-related workflows and/or a limited number of indications. We here analyzed workflows of an installed dual-room iCT (DR-iCT) as compared to surgical procedures lacking iCT. We compared infection rates, utilizations rates, and the spectrum of indications of DR-iCT with that of a previously used single-room iCT.


The study refers to a consecutive series of patients undergoing either single-room iCT (January 2014–August 2014) or DR-iCT (September 2014–July 2016). A further group undergoing surgery without iCT in the interconnected operating rooms represents the reference group. Workflow measurements and infection rates were calculated. Indications for iCT and utilization rates were compared for each of the devices. CT image quality was rated.


Application of DR-iCT led to a broader use of this technique as compared to the single-room device, which concerned in particular stereotactic neurosurgery. Accordingly, iCT utilization rates significantly increased (up to 50.8 ± 4.6 surgeries per month, p < 0.001). Workflow was slightly prolonged in case of DR-iCT imaging; the difference, however, was not statistically significant. Infections rates were low (range 0.0–0.17 infections per month) and not influenced by the utilization rate. Image quality of the DR-iCT was classified as very good in 34/43 evaluated microsurgical patients.


The use of DR-iCT enhances utilization rates with a broader field of indications for intraoperative imaging. Workflow measurements are not significantly prolonged. The technology is safe, and the imaging quality of modern devices can be expected to be good.


Intraoperative CT Sliding gantry Dual-room CT scanner Computed tomography 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical standard

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.


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Copyright information

© CARS 2018

Authors and Affiliations

  • Markus Lenski
    • 1
    • 3
    Email author
  • Johann Hofereiter
    • 1
    • 3
  • Nicole Terpolilli
    • 1
    • 3
  • Torleif Sandner
    • 2
    • 3
  • Stefan Zausinger
    • 1
    • 3
  • Jörg-Christian Tonn
    • 1
    • 3
  • Friedrich-Wilhelm Kreth
    • 1
    • 3
  • Christian Schichor
    • 1
    • 3
  1. 1.Neurochirurgische Klinik und Poliklinik, Department of NeurosurgeryKlinikum der Universität MünchenMunichGermany
  2. 2.Department of NeuroradiologyKlinikum der Universität MünchenMunichGermany
  3. 3.German Cancer Consortium, Partner Site Munich, German Cancer Research CenterHeidelbergGermany

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