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Deep-learning reconstructed lumbar spine 3D MRI for surgical planning: pedicle screw placement and geometric measurements compared to CT – Lumbar Fusion

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The article published in Eur Spine J aimed to assess the equivalency of deep-learning 3D lumbar spine MRI with “CT-like” contrast to CT for virtual pedicle screw planning and geometric measurements in robotic-navigated spinal surgery. The study involved analyzing 16 patients who underwent spinal fusion and decompression surgery, with pedicle screws virtually placed on lumbar and sacral vertebrae using both CT and 3D MRI scans. Results showed that deep-learning 3D MRI provided equivalent virtual pedicle screw placements and geometric assessments for most lumbar vertebrae compared to CT, with the exception of vertebral body length at certain levels. The study concluded that 3D MRI can be effectively used for pre-operative planning in patients undergoing robotic-navigated spine surgery

Summarised by Mr Mo Akmal – Lead Spinal Surgeon
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Published article

: Deep-learning 3D MRI facilitates equivalent virtual pedicle screw placements and geometric assessments for most lumbar vertebrae, with the exception of vertebral body length at L1, L2, and L4, compared to CT for pre-operative planning in patients considered for robotic-navigated spine surgery.

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Eur Spine J. 2024 Mar 12. doi: 10.1007/s00586-023-08123-3. Online ahead of print.ABSTRACTPURPOSE: To test equivalency of deep-learning 3D lumbar spine MRI with “CT-like” contrast to CT for virtual pedicle screw planning and geometric measurements in robotic-navigated spinal surgery.METHODS: Between December 2021 and June 2022, 16 patients referred for spinal fusion and decompression surgery with pre-operative,

Eur Spine J. 2024 Mar 12. doi: 10.1007/s00586-023-08123-3. Online ahead of print.

ABSTRACT

PURPOSE: To test equivalency of deep-learning 3D lumbar spine MRI with “CT-like” contrast to CT for virtual pedicle screw planning and geometric measurements in robotic-navigated spinal surgery.

METHODS: Between December 2021 and June 2022, 16 patients referred for spinal fusion and decompression surgery with pre-operative CT and 3D MRI were retrospectively assessed. Pedicle screws were virtually placed on lumbar (L1-L5) and sacral (S1) vertebrae by three spine surgeons, and metrics (lateral deviation, axial/sagittal angles) were collected. Vertebral body length/width (VL/VW) and pedicle height/width (PH/PW) were measured at L1-L5 by three radiologists. Analysis included equivalency testing using the 95% confidence interval (CI), a margin of ± 1 mm (± 2.08° for angles), and intra-class correlation coefficients (ICCs).

RESULTS: Across all vertebral levels, both combined and separately, equivalency between CT and MRI was proven for all pedicle screw metrics and geometric measurements, except for VL at L1 (mean difference: – 0.64 mm; [95%CI – 1.05, – 0.24]), L2 (- 0.65 mm; [95%CI – 1.11, – 0.20]), and L4 (- 0.78 mm; [95%CI – 1.11, – 0.46]). Inter- and intra-rater ICC for screw metrics across all vertebral levels combined ranged from 0.68 to 0.91 and 0.89-0.98 for CT, and from 0.62 to 0.92 and 0.81-0.97 for MRI, respectively. Inter- and intra-rater ICC for geometric measurements ranged from 0.60 to 0.95 and 0.84-0.97 for CT, and 0.61-0.95 and 0.93-0.98 for MRI, respectively.

: Deep-learning 3D MRI facilitates equivalent virtual pedicle screw placements and geometric assessments for most lumbar vertebrae, with the exception of vertebral body length at L1, L2, and L4, compared to CT for pre-operative planning in patients considered for robotic-navigated spine surgery.

PMID:38472429 | DOI:10.1007/s00586-023-08123-3

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Deep-learning reconstructed lumbar spine 3D MRI for surgical planning: pedicle screw placement and geometric measurements compared to CT

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Eur Spine J. 2024 Mar 12. doi: 10.1007/s00586-023-08123-3. Online ahead of print.ABSTRACTPURPOSE: To test equivalency of deep-learning 3D lumbar spine MRI with "CT-like" contrast to CT for virtual pedicle screw planning and geometric measurements in robotic-navigated spinal surgery.METHODS: Between December 2021 and June 2022, 16 patients referred for spinal fusion and decompression surgery with pre-operative

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