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Smartphone application with 3D-printed needle guide for faster and more accurate CT-guided interventions in a phantom

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Abstract

Objective

This study is to determine whether a needle guidance device combining a 3D-printed component with a smartphone would decrease the number of passes and time required to perform a standard CT-guided needle procedure in a phantom study.

Materials and methods

A 3D-printed mechanical guide with built-in apertures for various needle sizes was designed and printed. It was mounted on a smartphone and used to direct commercially available spring-loaded biopsy devices. A smartphone software application was developed to use the phone’s sensors to provide the real-time location of a lesion in space, based on parameters derived from preprocedural CT images. The physical linkage of the guide, smartphone, and needle allowed the operator to manipulate the assembly as a single unit, with real-time graphical representation of the lesion shown on the smartphone display. Two radiology trainees and 3 staff radiologists targeted 5 lesions with and without the device (50 total procedures). The number of passes and time taken to reach each lesion were determined.

Results

Use of the smartphone needle guide decreased the mean number of passes (with guide, 1.8; without guide, 3.4; P < 0.001) and mean time taken (with guide, 1.6 min; without guide, 2.7 min; P = 0.005) to perform a standard CT-guided procedure. On average, the decreases in number of passes and procedure time were more pronounced among trainees (P < 0.001).

Conclusion

The combination of a mechanical guide and smartphone can reduce the number of needle passes and the amount of time needed to reach a lesion in a phantom for both trainees and experienced radiologists.

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Data Availability

The data that support the findings of this study are available on reasonable request from the corresponding author.

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Author information

Authors and Affiliations

  1. Imaging Institute, Cleveland Clinic, 9500 Euclid Ave, Cleveland, OH, 44195, USA

    Christopher Lui, Rylan Polster, Zeeshan Baqui, Hakan Ilaslan, Matthew Neill, Claus Simpfendorfer, Faysal Altahawi & Joshua Polster

  2. Quantitative Health Sciences, Cleveland Clinic, 9500 Euclid Ave, Cleveland, OH, 44195, USA

    Jennifer Bullen

Authors
  1. Christopher Lui
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  2. Rylan Polster
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  3. Jennifer Bullen
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  4. Zeeshan Baqui
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  5. Hakan Ilaslan
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  6. Matthew Neill
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  7. Claus Simpfendorfer
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  8. Faysal Altahawi
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  9. Joshua Polster
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Corresponding author

Correspondence to Christopher Lui.

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Ethics approval

Institutional review board approval was not required for this study as human subjects were not involved.

Conflict of interest

Joshua Polster holds a US patent on the device described in this manuscript. He did not participate in the procedures or perform the statistical data analysis in the study. The other authors have no disclosures.

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Lui, C., Polster, R., Bullen, J. et al. Smartphone application with 3D-printed needle guide for faster and more accurate CT-guided interventions in a phantom. Skeletal Radiol 53, 567–573 (2024). https://doi.org/10.1007/s00256-023-04453-x

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  • DOI: https://doi.org/10.1007/s00256-023-04453-x

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