摘要
醫(yī)學影像存檔與通訊系統(tǒng)PACS是醫(yī)院信息系統(tǒng)中的一個重要組成部分，一個完整的PACS系統(tǒng)由醫(yī)療影像的產(chǎn)生、獲取、歸檔、處理和傳輸?shù)葞撞糠纸M成。DICOM是醫(yī)學影像存檔與通訊系統(tǒng)PACS的國際性標準，DICOM標準作為被絕大多數(shù)醫(yī)學影像設(shè)備和信息系統(tǒng)提供商遵從的國際標準規(guī)范，是醫(yī)學影像設(shè)備系統(tǒng)間開放性互連及影像互操作性的根本保證，在PACS的建設(shè)中處于核心地位。
本文首先介紹了DICOM標準及基于DICOM標準的PACS的發(fā)展背景、形成歷史和體系結(jié)構(gòu)，分析了DICOM的實體--關(guān)系信息模型。
對DICOM醫(yī)學影像文件進行處理的首要問題就是DICOM文件進行解析，本文對DICOM文件格式與數(shù)據(jù)編碼方法進行了較為詳細的研究，在此基礎(chǔ)上，探討了DICOM醫(yī)學圖像的空間變換、窗寬和窗位調(diào)節(jié)、偽彩色變換、灰度變換等處理。借助于DICOM3MAX控件實現(xiàn)部分DICOM應(yīng)用。
最后談?wù)摿艘稽c自己的想法和建議。
關(guān)鍵字:DICOM; PACS;醫(yī)學影像;格式轉(zhuǎn)換;
Abstract
With the fast development of information technology and medical imaging technology, PACS (Picture Archiving and Communication Systems) based on DICOM standard is the important part of realizing medical image information management, it can digitize the data from the collection, display, storage,exchange and output of medical images. Digital Imaging and Communication in Medicine (DICOM) standard, which has been developed by ACR and NEMA,has been the international standard in medical image field, it provides an open data-exchange standard and makes it possible to unify the storage and communication of images produced by different equipments.
Firstly, the thesis resumptively introduces the DICOM standard and information model, presents the common operations of medical images, like zoom, contrast, flip, pseudo color transformation. Secondly, Use the DICOM3MAX to show how to make the standard true.
At the end,I note some thought about DICOM.
Key Words: DICOM; medical image; PACS; format conversion;
目錄
第1章緒論................................................... 1
1.1醫(yī)學影像存檔和通訊系統(tǒng)..................................1
1.2 DICOM標準簡介..........................................4
1.3 HO標準簡介...............................。............5
1.4本文的主要工作..........................................6
第2章DICOM標準分析與研究.................................8
2.1 DICOM 3.0標準特點.......................................8
2. 2 DICOM標準結(jié)構(gòu)..........................................8
2. 3 DICOM標準的信息模型....................................11
2. 4 DICOM標準的意義........................................13
第3章DICOM圖像處理.........................................15
3.1 DICOM文件解析..........................................15
•3. 1. 1 DICOM數(shù)據(jù)結(jié)構(gòu)..................................15
3. 1. 2 DICOM文件結(jié)構(gòu)..................................18
3. 1. 3 DICOM圖像編碼..................................23
3. 2 DICOM圖像的處理.......................................25
3.2.1窗寬和窗位的調(diào)節(jié)..................................25
3.2.2偽彩色變換........................................26
3.2.3圖像的旋轉(zhuǎn)和放大..................................27
3.2.4圖像的灰度變換................................... 29
3.3 DICO3MAX的應(yīng)用.........................................29
第4章 對DICOM一些想法......................................31
4. 1與數(shù)據(jù)庫的關(guān)系..........................................31
4. 2 DCM 文件解析...........................................32
第5章結(jié)束語..................................................39
總結(jié)和展望..................................................39
致謝............................................................40
參考文獻........................................................41
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