AI Article Synopsis
- This study aimed to describe and verify a technique for visualizing the L5 pars interarticularis (L5PI) using diagnostic ultrasound (DUS) on a healthy 10-year-old boy.
- The methodology involved scanning the L5/S1 region with a linear array transducer and confirming the L5PI's identification through comparisons with spine models and imaging a subject known to have spondylolysis.
- Results indicated that the ultrasound images matched the models with a metal paperclip placed over L5PI, and spondylolysis showed a distinct defect at this site, establishing the DUS technique as effective for diagnosing L5PI.
Article Abstract
Objective: Technique description and verification of L5 pars interarticularis (L5PI) using diagnostic ultrasound (DUS).
Methods: Asymptomatic 10-year-old male subject was scanned with diagnostic ultrasound applying a linear array transducer (8-13 MHz) over L5/S1 facets; long-axis slide cephalad to capture both superior (SAP) and inferior articulating process (IAP) of L5. Contiguous hyperechoic cortex with deep acoustic shadowing between the SAP and IAP was assumed to be L5PI. To confirm in vivo technique representing L5PI, two spine models (plastic, human spine) were scanned to verify authors' assumption. Metallic paperclip was placed over L5PI then DUS image captured. Lastly, a subject with known spondylolysis was imaged and sonographic appearance of L5PI compared.
Results: The structures localized with the metal paperclip on L5PI models were equivalent to the in vivo DUS image. Spondylolysis demonstrates an abrupt step-off defect at L5PI.
Conclusion: We report the first technique description and verification of the L5PI using DUS.
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Source |
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11418794 | PMC |
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