北京生物醫(yī)學(xué)工程

一種DICOM文件并行查找算法的設(shè)計(jì)與實(shí)現(xiàn)

Design and implementation of a novel parallel search algorithm for DICOM files

作者：郭華源

單位：中國(guó)人民解放軍總醫(yī)院計(jì)算機(jī)應(yīng)用與管理科（北京 100853）

關(guān)鍵詞： DICOM文件；并行查找；任務(wù)等分策略；.NET framework 4

分類號(hào)：

出版年·卷·期（頁(yè)碼）：2012·31·2（174-177）

摘要：

目的為提高DICOM文件查找的速度和效率。方法在分析DICOM文件查找的基本原理基礎(chǔ)上，設(shè)計(jì)一種基于任務(wù)等分策略的文件并行查找算法，并基于.NET Framework 4和Leadtools DICOM開發(fā)包實(shí)現(xiàn)該算法。該算法特點(diǎn)是采用多線程并行技術(shù)，通過(guò)任務(wù)等分和多核并行實(shí)現(xiàn)DICOM文件并行查找。在HP DL380 G5服務(wù)器上對(duì)并行算法進(jìn)行性能測(cè)試，獲得并行加速比曲線圖。結(jié)果測(cè)試表明該算法具有良好的并行性能，可顯著提高DICOM文件查找效率。結(jié)論采用任務(wù)等分策略和多線程并行模型，能夠有效提高DICOM文件查找的速度和效率。

Objective To improve the search speed and efficiency of DICOM files.Methods Through the search feature analysis of DICOM files in this paper firstly，a novel parallel search algorithm of DICOM files based on the task partition strategy is designed which can speedup the files search through parallel mode.Then，the algorithm is implemented based on the Microsoft .NET framework 4 and Leadtools DICOM toolkit.The algorithm’s characteristic is the parallel mode and the task partition strategy to realize the parallel search of DICOM files.The parallel algorithm is tested on HP DL380 G5 server and the parallel speedup curve is obtained.Results The test results show that the algorithm is of good parallel capability and can greatly improve the DICOM file search efficiency.Conclusions Multithreading parallel model and task partition strategy can improve the search speed and efficiency of DICOM files.

參考文獻(xiàn)：

［1］Huang HK，F(xiàn)RCR(Hon.) DSc,FAIMBE.PACS and imaging informatics basic principles and applications［M］.Hoboken，New Jersey：John Wiley & Sons，Inc,2010.
［2］National Electrical Manufacturers Association.Digital Imaging and Communication In Medicine(DICOM) PS3.7 2007.
［3］郭華源,駱志剛,楊澤凡,等.基于序列劃分策略的Hmmsearch程序兩級(jí)并行實(shí)現(xiàn)［J］.計(jì)算機(jī)應(yīng)用與軟件,2006,23(11): 32-33.
Guo HY,Luo ZG,Yang ZF.Implementation of two-level parallelization of Hmmsearch based on sequence partition strategy［J］.Computer Applications and Software，2006,23(11): 32-33.
［4］郭華源,薛萬(wàn)國(guó).一種DICOM文件并行傳送算法的設(shè)計(jì)與實(shí)現(xiàn)［J］.北京生物醫(yī)學(xué)工程,2011,30(2): 178-182.
Guo HY,Xue WG.Design and implementation of a novel parallel transfer algorithm of DICOM files［J］.Beijing Biomedical Engineering，2011,30(2): 178-182.
［5］Patterns of Parallel Programming Understanding and applying parallel patterns with the.NET Framework 4 and C ［R/OL］.(2009-10-28)［2009-11-16］.http://www.microsoft.com/downloads/details.aspx?FamilyID=86b3d32b-ad26-4bb8-a3ae-c1637026c3ee.
［6］LEADTOOLS SDK evaluation ［CP/OL］.(2009-11-06).http://www.leadtools.com/downloads/evaluation-form.htm?linkid=top_ menu.

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