mdct 中文意思是什麼

mdct 解釋
變化的離散餘弦變換
  1. The researchers divided their cohort into two groups : 38 patients received a water enema, and 38 underwent room - air insufflation. after insufflation with air or water, patients were imaged with mdct

    研究人員將患者均分成兩組，一半患者接受水灌腸，另一半則採取室內空氣注入對比。注入水或空氣後患者行螺旋掃描成像。
  2. Although mri is still the gold standard when it comes to colorectal cancer staging, a new study from italy shows that preoperative multidetector - row ct ( mdct ) staging using a water enema may offer some advantages over air insufflation

    盡管提到直腸癌的分期mri仍然是其金標準，但一項來自義大利的研究表明術前應用水灌腸較空氣有更多優勢。
  3. Purpose : to demonstrate the value of multi detector computed tomography ( mdct ) and magnetic resonance imaging ( mri ) in the preoperative work up of temporal bone tumors and to present, especially, ct and mr image fusion for surgical planning and performance in computer assisted navigated neurosurgery of temporal bone tumors

    目的論證多探頭計算機斷層掃描（ mdct ）和核磁共振成像（ mri ）在顳骨腫瘤手術前設計的價值，尤其是顳骨腫瘤計算機輔助導航神經外科手術路徑的設計。
  4. Relationship between mdct and simultaneous mask effect curve

    修正離散餘弦變換與同時掩蔽效應曲線的關系
  5. However, there still exists correlation between coefficients of sub - matrices after 4d - mdct. this thesis proposes a four dimensional matrix video coding method based on context to get rid of the correlation between coefficient sub - matrices further. it includes three parts as follows : firstly, this thesis presents a four - dimensional matrix video encoder and decoder model, which contains components of prediction, transform and entropy coding

    實驗結果表明，該方法與傳統的二維編碼方法相比，具有高壓縮比和高圖象質量的優點;與矢量量化編碼相比，具有碼表體積小，計算復雜度低的特點;與霍夫曼編碼方法相比，在相同信噪比的條件下，對運動相對劇烈的視頻序列壓縮效果要更好。
  6. In this article, we present a 54 - year - old male with an asymptomatic left main coronary artery to main pulmonary artery fistula in which the diagnosis was made by multidetector computed tomography ( mdct ) and coronary angiography

    在這篇個案報告里的五十四歲男性患者罹患了無癥狀的左主冠狀動脈瘺管，而這個冠狀動脈瘺管經由冠狀動脈攝影，還有多切面電腦斷層攝影被診斷與肺動脈相連接。
  7. Mdct for modified discrete cosine transform

    改進的離散餘弦變換
  8. Researchers in florida hae deeloped a triphasic multidetector - row ct ( mdct ) method for ruling out the three most dangerous causes of chest pain

    佛羅里達的研究人員已經開展了一種三相多排探頭ct （ mdct ）檢測方法用以排除引起胸痛的三種最危險的原因。
  9. Researchers in florida have developed a triphasic multidetector - row ct ( mdct ) method for ruling out the three most dangerous causes of chest pain

    佛羅里達的研究人員已經開展了一種三相多排探頭ct （ mdct ）檢測方法用以排除引起胸痛的三種最危險的原因。
  10. A wlp - mdct based hybrid audio coding algorithm

    混合音頻編碼演算法
  11. Mdct image pre - transact process

    Mdct圖像的預處理過程。
  12. And this method still fit for ct image besides mdct image

    該演算法除了處理mdct圖像外，同樣也適合其他ct圖像。
  13. Reconstructed images obtained on mdct coronary angiography are illustrated with correlative angiographic images

    而且重組后的多切面電腦斷層攝影的影像跟冠狀動脈攝影所呈現的結果有不錯的吻合性。
  14. The achievement of modifications on source - code was summarized as well. chapter one briefly introduced current developing status of audio coding techniques and the structure of this paper ; then chapter two shortly described the history of ogg vorbis and its technical process flow ; the data process and parameters calculations before vorbis quantization were discussed in chapter three ; and the details about vorbis quantization were shown in chapter four ; the following chapter five researched the process of vorbis decoding ; in chapter six, i derived and provided a unified implement structure on mdct and modified the source - code ; chapter seven is about some experiments where i compared and analyzed to finally present a summary on ogg vorbis encoding performance and the results on code modifications

    論文第一章敘述了數字音頻壓縮技術發展狀況、音頻標準、主流音頻格式、各音頻格式存在的問題以及對本論文組織結構的簡要說明;第二章簡要介紹了oggvorbis音頻格式的概況和編解碼的技術結構;第三章詳細介紹了voibis演算法編碼過程中量化處理之前的數據處理和參數計算;第四章詳細介紹了voibis演算法編碼過程中的量化處理;第五章結合源代碼詳細介紹了vorbis演算法的解碼過程;第六章中對oggvorbis的mdct運算模塊提出一種統一實現方案，同時對代碼進行了修改;第七章將oggvorbis音頻與主流音頻格式mp3及aac進行了對比測試，對vorbis整體編碼性能和前面章節中代碼的修改作出了總結。
  15. It shows mdct could be useful in diagnosis and in delineating the complex anatomy of a coronary artery fistula as well as for conventional coronary angiography

    所以從這篇個案報告我們可以了解到，多切面電腦斷層攝影的呈像結果不遜于傳統的冠狀動脈攝影，甚至可以用來檢查與診斷具有復雜構造的冠狀動脈瘺管。
  16. This thesis is part of the project of national science foundation of china “ study on color video coding based on four - dimensional matrix ”. a multi - matrix theory model has been established in the project. and the color video is presented into a four dimensional matrix model and the four - dimensional discrete cosine transform ( 4d - mdct ) is applied to reduce the correlation between color components and adjacent pixels

    將多個彩色視頻幀構建在一個四維矩陣模型中進行運動補償預測、四維矩陣離散餘弦變換和矩陣量化，最後利用基於上下文的變長編碼方法進行壓縮，以全面去除彩色視頻各象素之間、各彩色分量之間以及連續幀之間的相關性，從而實現高信噪比條件下的高倍壓縮。
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