北京生物醫(yī)學(xué)工程

CARTO_XP系統(tǒng)中CARTO電解剖圖的數(shù)據(jù)提取

The Data Extraction of CARTO Electro-Anatomical Map from CARTO XP System

作者：關(guān)燕妮李亞芬舒麗霞龍德勇王普

單位：北京工業(yè)大學(xué)電子信息與控制工程學(xué)院（北京100124）

關(guān)鍵詞： CARTO電解剖圖；標(biāo)測(cè)點(diǎn)；數(shù)據(jù)提取

分類號(hào)：

出版年·卷·期（頁碼）：2011·30·1（5-9）

摘要：

利用CARTO XP系統(tǒng)指導(dǎo)心房顫動(dòng)消融手術(shù)是當(dāng)今臨床研究的熱點(diǎn)，手術(shù)消融的最終效果取決于心臟CT圖像與CARTO XP系統(tǒng)生成的電解剖圖的配準(zhǔn)精度。然而，由于CARTO XP系統(tǒng)圖像文件為專屬的dicm格式，現(xiàn)有的DICOM瀏覽器只能讀取三維CARTO電解剖圖在某一體位的二維截圖，相關(guān)研究非常少，數(shù)據(jù)格式的不兼容嚴(yán)重阻礙了心臟CT與CARTO電解剖圖的算法研究。本文在詳細(xì)闡述CARTO電解剖圖像格式的基礎(chǔ)上，給出用MATLAB提取相應(yīng)數(shù)據(jù)信息的具體方法，然后根據(jù)標(biāo)測(cè)點(diǎn)位置信息重建出心腔內(nèi)壁關(guān)鍵點(diǎn)的三維點(diǎn)圖。本方法避免了使用仿真軟件繪制CARTO電解剖圖形帶來的主觀性差異，為后續(xù)的配準(zhǔn)算法研究提供了很好的實(shí)際數(shù)據(jù)支持。

Atrial fibrillation ablation guided by CARTO XP system, which relies on the registration accuracy between the CARTO electro-anatomical map and the computed tomography (CT) image, is a clinical research hotspot nowadays. To register the two images, we first need to read the electro-anatomical map from the CARTO XP system. However, due to the unique dicm format of CARTO electro-anatomical map, existing DICOM viewers can only read a 2D screenshot of the 3D electro-anatomical map. In this study, we first discussed the format of CARTO electro-anatomical map, and then extracted the information of the mapping points using MATLAB. Finally we reconstructed the 3D spot chart for the heart inner chambers according to the positional information of mapping points. Our method can avoid the subjective difference caused by CARTO electro-anatomical map simulation, and provide the actual data support for the following study on registration algorithm.

參考文獻(xiàn)：

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