ar js 3d model的問題,透過圖書和論文來找解法和答案更準確安心。 我們找到下列免費下載的地點或者是各式教學

國立臺灣大學 醫學工程學研究所 陳中明所指導 陳和豐的 基於肺部電腦斷層之肺腺癌EGFR突變預測:結合Patch-based radiomics紋理特徵圖於深度學習網路 (2021),提出ar js 3d model關鍵因素是什麼,來自於肺腺癌、表皮生長因子受體、EGFR突變、深度學習、lung phantom、radiomics特徵。

而第二篇論文中國醫藥大學 牙醫學系博士班 劉沖明所指導 Syamsiah Syam的 An Innovative nano bio-ceramic as a potential bone graft substitute: characteristics, bone healing, and regeneration feature (2021),提出因為有 α-calcium sulfate hemihydrate、bio-ceramic、bone graft、platelet-rich plasma、bone defect treatment、bone healing、bone regeneration的重點而找出了 ar js 3d model的解答。

接下來讓我們看這些論文和書籍都說些什麼吧:

除了ar js 3d model,大家也想知道這些:

基於肺部電腦斷層之肺腺癌EGFR突變預測:結合Patch-based radiomics紋理特徵圖於深度學習網路

為了解決ar js 3d model的問題,作者陳和豐 這樣論述:

肺癌已成為世界上最主要癌症死因之一,並且其發病率與死亡率都有逐年上升的趨勢,晚期肺癌患者的5年平均存活率僅有15%。依治療和預後的不同,肺癌主要分為兩種:(I)非小細胞肺癌(Non-small-cell lung cancer,NSCLC);(II)小細胞肺癌(Small-cell lung cancer,SCLC)。其中有85%的患者是屬於NSCLC,並且NSCLC患者大部分都被診斷為肺腺癌(Lung Adenocarcinoma, LAC)。EGFR(epidermal growth factor receptor)是肺癌治療中最有用的biomarkers之一。在亞洲有高達50%的肺癌患

者有表皮生長因子受體基因突變(EGFR mutations, mEGFR)。mEGFR患者對EGFR tyrosine kinase inhibitor (EGFR TKI)的反應優於無mEGFR患者。本研究提出「同時考慮CT影像腫瘤內部patchwise成分」的核心概念,開發一套基於深度學習之肺腺癌mEGFR預測模型。結合CT radiomic特徵與patch-based的腫瘤內部區域資訊尋找分類特徵,以協助LAC患者於標靶治療的治療規劃。本研究預測模型在僅考慮腫瘤區域成分的因素下,找尋腫瘤CT影像中之特徵。為達此目標,首先分為肺區分割以及腫瘤分割。分割結果顯示,本研究之肺區分割平均Dice

coefficient為0.9891;腫瘤分割結果平均Dice coefficient為0.806。接著從分割的腫瘤中提取了 212個3D 灰度共生矩陣(GLCM)之特徵。通過sequence forward feature selection選到energy和entropy為重要特徵。透過patch-base的方式使用5×5×5立方體大小計算原始影像上energy以及entropy的特徵圖作為RGANN分類模型的第二、三個通道輸入。接著在RGANN的第四層加入gated attention機制,將前一層輸入的特徵圖與分割的腫瘤binary影像相乘去引導 RGANN 模型只關注於腫瘤區域,以

提高分類的準確性。同時,RGANN的方法與GANN的方法進行了比較。RGANN 在training cohort (n=591,AUC=0.96,ACC = 0.98)validation cohort(n=85,AUC = 0.83,ACC = 0.81)和testing cohort(n=169,AUC = 0.77,ACC = 0.76) 優於 GANN 模型testing cohort(n=169,AUC = 0.74,ACC = 0.73)。此外,本研究針對lung phantom在9種不同輻射劑量(Tube current)與3種不同重建演算法下進行radiomic特徵的提取,並將

研究結果應用於真實病人之Lung CT影像上進行分類。研究顯示,在輻射劑量小於200mA的CT影像提取出的radiomic特徵有較大的變化;反之,提取出的特徵則較穩定。本研究將蒐集之CT影像分為以上兩種情況進行訓練,並且與原始訓練結果進行比較。分類結果顯示,當CT影像皆為大於200mA的情況下,RGANN得到的測試結果為(n=71,AUC = 0.78,ACC = 0.771);當CT影像皆為小於200mA的情況下,RGANN得到的測試結果為(n=98,AUC = 0.63,ACC = 0.676)。以上分類結果可見掃描CT影像時,使用不同的Tube current參數會造成擷取的radiom

ic特徵有不同的變化,導致在分類mEGFR的結果上顯示,使用較高劑量的CT影像進行分析能得到較好的分類結果。本研究所提出之RGANN模型透過擷取腫瘤內部patchwise成分,在預測mEGFR方面較僅使用原始CT影像的DL模型達到較好的分類結果。

An Innovative nano bio-ceramic as a potential bone graft substitute: characteristics, bone healing, and regeneration feature

為了解決ar js 3d model的問題,作者Syamsiah Syam 這樣論述:

Aim: This study aimed to evaluate characteristics of an innovative nano bio-ceramic α-calcium sulfate hemihydrate (α-CSH), and bone healing and regeneration characteristics following its implantation on artificially-created defects of rat models. We also analyze the effect of combining an innovativ

e nano bio-ceramic α-calcium sulfate hemihydrate (α-CSH, CaSO4•0.5H2O) bone graft and platelet-rich plasma (PRP) to accelerate bone healing and regeneration in a rabbit model.Methods: The α-CSH was characterized using field-emission scanning electron microscope (FE-SEM), energy dispersive spectrosco

py (EDS), and thermal-imaging instrument. The material was implanted on artificially-created defects in rat’s right hind leg bone and observed histologically after 3 days and 7 weeks. The bone graft material also was implanted bilaterally on rabbit’s artificially maxillary sinus defects, maxillary s

inus received α-CSH or α-CSH combine with PRP (α-CSH/PRP) grafted randomly. The quantity and quality of bone formation after implantation were analyzed radiographically and histologically at 1, 2, and 3 weeks.Results: The FE-SEM confirm this material is a uniform shaped short column crystal, while E

DS measurement reveals calcium is the most component in this material. Thermal observation shows temperature change during setting time is less than 2 °C and the maximum temperature reached is 31 °C. In the histological analysis, α-CSH nano bio-ceramic shows new trabecular bone formation and absorbe

d material at 7 weeks post-treatment. The micro-computed tomographic results indicated that the bone density of sinus implanted with α-CSH increased and defect volume decreased most in 2 weeks. In histological analysis, both hematoxylin and eosin and Masson trichrome staining of α-CSH/PRP displays b

etter bone healing and regeneration progress than α-CSH after 2 weeks implantation.Conclusion: This study suggests that the innovative nano bio-ceramic α-CSH can be useful in bone defect treatment. Moreover, α-CSH combined with PRP was revealed to be useful in accelerating bone healing and regenerat

ion for the successful defect treatment.