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基于标记物的肝脏计算机断层扫描和磁共振图像配准中系统误差的评估。

An evaluation of systematic errors on marker-based registration of computed tomography and magnetic resonance images of the liver.

作者信息

Woolcot Thomas, Kousi Evanthia, Wells Emma, Aitken Katharine, Taylor Helen, Schmidt Maria A

机构信息

Brighton and Sussex University Hospitals NHS Trust, Eastern Rd, Brighton BN2 5BE, UK.

CR-UK and EPSRC Cancer Imaging Centre, Royal Marsden NHS Foundation Trust and Institute of Cancer Research, Downs Rd, Sutton, Surrey SM2 5PT, UK.

出版信息

Phys Imaging Radiat Oncol. 2018 Sep 6;7:27-31. doi: 10.1016/j.phro.2018.08.001. eCollection 2018 Jul.

DOI:10.1016/j.phro.2018.08.001
PMID:33458402
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7807725/
Abstract

We demonstrated a general method to evaluate systematic errors related to Magnetic Resonance (MR) imaging sequences in marker-based co-registration of MR and Computed Tomography (CT) images, and investigated the effect of MR image quality in the co-registration process using clinical MR and CT protocols for stereotactic ablative body radiotherapy (SABR) planning of the liver. Small systematic errors (under 1.6 mm) were detected, unlikely to be a clinical risk to liver SABR. The least favourable marker configuration was found to be a co-planar arrangement parallel to the transaxial image plane.

摘要

我们展示了一种通用方法，用于评估磁共振（MR）成像序列在基于标记的MR与计算机断层扫描（CT）图像配准中相关的系统误差，并使用临床MR和CT协议对肝脏立体定向消融放疗（SABR）计划，研究了MR图像质量在配准过程中的影响。检测到较小的系统误差（小于1.6毫米），对肝脏SABR不太可能构成临床风险。发现最不利的标记配置是与横断面图像平面平行的共面排列。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e00/7807725/b1c666db7341/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e00/7807725/561aa9c958b4/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e00/7807725/b1c666db7341/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e00/7807725/561aa9c958b4/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e00/7807725/b1c666db7341/gr2.jpg

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