Pre-operative templating for total hip arthroplasty: How does radiographic technique and calibration marker placement affect image magnification?

ABSTRACT:

Introduction

Pre-operative templating using digital radiography is an effective method of planning for total hip arthroplasty (THA) and requires a generalised fixed magnification factor (MF) or external calibration markers (ECM). The effect on image magnification when changing source-to-image distance (SID), object-to-image distance (OID) and different imaging conditions is not well described. This study aims to quantify the range of effects manipulation of radiographic parameters can have on image magnification across different body habitus and imaging conditions.

Methods

A simple phantom study was performed. A 25 mm ECM was placed at eight different OID values along the anterior-posterior phantom plane at three different SID values and imaging conditions, and X-rays were o

SUBMITTER: Holliday M 

PROVIDER: S-EPMC8424328 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature