Precision evaluation of 2 CT-based radiostereometric analysis systems in a cadaver study.

ABSTRACT:

Background and purpose

 To address the limitations of radiostereometric imaging and to eliminate the need for intraoperative marker placement, CT-based radiostereometric analysis (CT-RSA) software systems have been developed. We aimed to evaluate the precision of a novel CT-RSA software system, V3MA, against an established CT-RSA software system, CTMA, while also examining the impact of CT scanner model on precision.

Methods

 7 CT scans per scanner (Siemens SOMATOM Force and GE Revolution) of a porcine cadaver with a knee implant were used for pairwise comparisons. By aligning paired CT scans, the translation (mm), rotation (°), and maximum total point motion (MTPM, mm) of the tibial implant with respect to the bone were computed. V3MA aligned the scans using the voxel gray

SUBMITTER: De Bondt MR 

PROVIDER: S-EPMC12645134 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature