基于前后位x线片的新型放射影像茎型预测器

IF 1.4 3区医学 Q4 ENGINEERING, BIOMEDICAL

Clinical Biomechanics Pub Date : 2025-02-12 DOI:10.1016/j.clinbiomech.2025.106465

Oscar Denton , Chris Madden-McKee , Nicholas Dunne , John O'Connor , Janet Hill , David Beverland , Alex Lennon

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引用次数: 0

摘要

背景：植体定位与术后预后有关，经常在x线片上进行评估。然而，三维关节和种植体结构在二维x线片上的投影使其评估复杂化。本研究的主要目的是展示一种新的方法来评估放射成像的干版本，以一种对多轴旋转，特别是AP倾斜和屈曲稳健的方式。方法利用计算干几何和放射学模拟综合放射学特征，建立临床误差源。特征训练的高斯过程回归预测器的放射学干版。然后评估AP倾斜对Weber技术准确性的影响，并研究从同一x线片评估AP倾斜的可行性。在体外x线片上评估放射学主干版本预测准确性，R2从0.85 (P <；0.01)，使用韦伯技术为0.98 (P <；0.01)。在更大的计算机数据集中观察到类似的结果，R2从0.89 (P <；0.01)至0.98 (P <；0.01)。倾斜被证明会降低韦伯技术的准确性。然后证明了股骨植入物具有AP倾斜的投影对称性，阐明了在AP x线片上评估倾斜时的模糊性。这种基于特征的新方法是一种可靠的放射照相系统测量方法，对多轴方向的变化具有鲁棒性，可以评估一系列术后x线片旋转的变化。然而，需要一个可控的x光片来确保这个镜像植入的茎版本。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Novel radiographic stem version predictor from anterior-posterior radiographs

Background

Implant orientation has been linked to postoperative outcomes and is frequently assessed on radiographs. However, the projection of the three-dimensional joint and implant structure to a two-dimensional radiograph complicates its assessment. The main objective of this study was to demonstrate a novel method for evaluating radiographic stem version, in a manner robust to multiaxial rotations, particularly AP tilt and flexion.

Methods

Radiographic features where synthesised using a computational stem geometry and radiographic simulation, building in clinical error sources. Features trained a Gaussian process regression predictor of radiographic stem version. The impact of AP tilt on the accuracy of the Weber technique was then evaluated and the feasibility of AP tilt assessment from the same radiograph investigated.

Findings

Radiographic stem version prediction accuracy was evaluated on in vitro radiographs with R² rising from 0.85 (P < 0.01) using the Weber technique to 0.98 (P < 0.01) using the trained model. Similar results were observed in a larger in silico dataset with R² rising from 0.89 (P < 0.01) to 0.98 (P < 0.01). Tilt was shown to reduce the accuracy of the Weber technique. Projectional symmetry was then demonstrated about the femoral implant with AP tilt, elucidating ambiguity when assessing tilt on an AP radiograph.

Interpretation

The novel feature-based method is a reliable measure of radiographic stem version that is robust to variation on multiaxial orientation, allowing assessment of changing rotation in series of postoperative radiographs. However, a controlled radiograph is required to ensure this mirrors implanted stem version.

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来源期刊

Clinical Biomechanics 医学-工程：生物医学

CiteScore

3.30

自引率

5.60%

发文量

189

审稿时长

12.3 weeks

期刊介绍： Clinical Biomechanics is an international multidisciplinary journal of biomechanics with a focus on medical and clinical applications of new knowledge in the field. The science of biomechanics helps explain the causes of cell, tissue, organ and body system disorders, and supports clinicians in the diagnosis, prognosis and evaluation of treatment methods and technologies. Clinical Biomechanics aims to strengthen the links between laboratory and clinic by publishing cutting-edge biomechanics research which helps to explain the causes of injury and disease, and which provides evidence contributing to improved clinical management. A rigorous peer review system is employed and every attempt is made to process and publish top-quality papers promptly. Clinical Biomechanics explores all facets of body system, organ, tissue and cell biomechanics, with an emphasis on medical and clinical applications of the basic science aspects. The role of basic science is therefore recognized in a medical or clinical context. The readership of the journal closely reflects its multi-disciplinary contents, being a balance of scientists, engineers and clinicians. The contents are in the form of research papers, brief reports, review papers and correspondence, whilst special interest issues and supplements are published from time to time. Disciplines covered include biomechanics and mechanobiology at all scales, bioengineering and use of tissue engineering and biomaterials for clinical applications, biophysics, as well as biomechanical aspects of medical robotics, ergonomics, physical and occupational therapeutics and rehabilitation.