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Application and prospects of AI-based radiomics in ultrasound diagnosis 被引量:1
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作者 Haoyan Zhang Zheling Meng +2 位作者 Jinyu Ru Yaqing Meng Kun Wang 《Visual Computing for Industry,Biomedicine,and Art》 EI 2023年第1期288-303,共16页
Artificial intelligence (AI)-based radiomics has attracted considerable research attention in the field of medical imaging, including ultrasound diagnosis. Ultrasound imaging has unique advantages such as high tempora... Artificial intelligence (AI)-based radiomics has attracted considerable research attention in the field of medical imaging, including ultrasound diagnosis. Ultrasound imaging has unique advantages such as high temporal resolution, low cost, and no radiation exposure. This renders it a preferred imaging modality for several clinical scenarios. This review includes a detailed introduction to imaging modalities, including Brightness-mode ultrasound, color Doppler flow imaging, ultrasound elastography, contrast-enhanced ultrasound, and multi-modal fusion analysis. It provides an overview of the current status and prospects of AI-based radiomics in ultrasound diagnosis, highlighting the application of AI-based radiomics to static ultrasound images, dynamic ultrasound videos, and multi-modal ultrasound fusion analysis. 展开更多
关键词 Radiomics ultrasound imaging Artificial intelligence Deep learning b-mode ultrasound Color Doppler flow imaging ultrasound elastography Contrast-enhanced ultrasound Multimodal ultrasound
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Clinical significance of B-mode ultrasound found bladder trabeculation in BPH patients
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作者 陈山 《外科研究与新技术》 2011年第4期255-256,共2页
Objective To study the role of bladder trabeculation found by B-mode ultrasound in evaluating the degree of bladder outlet obstruction ( BOO ) and the bladder function in benign prostatic hyperplasia ( BPH) patients. ... Objective To study the role of bladder trabeculation found by B-mode ultrasound in evaluating the degree of bladder outlet obstruction ( BOO ) and the bladder function in benign prostatic hyperplasia ( BPH) patients. Methods Conducted prospective research to determine differences in clinical data and urodynamic 展开更多
关键词 BPH Clinical significance of b-mode ultrasound found bladder trabeculation in BPH patients MODE
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Contrast-enhanced ultrasound imaging for intestinal lymphoma 被引量:3
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作者 Ning-Yi Cui Xuan-Tong Gong +6 位作者 Yan-Tao Tian Yong Wang Rui Zhang Meng-Jia Liu Jie Han Bo Wang Di Yang 《World Journal of Gastroenterology》 SCIE CAS 2021年第32期5438-5447,共10页
BACKGROUND Intestinal lymphoma is a rare tumor.Contrast-enhanced ultrasound(CEUS)findings of intestinal lymphoma have not been reported previously,and the relationship between CEUS and clinicopathological features and... BACKGROUND Intestinal lymphoma is a rare tumor.Contrast-enhanced ultrasound(CEUS)findings of intestinal lymphoma have not been reported previously,and the relationship between CEUS and clinicopathological features and prognostic factors is still unknown.AIM To describe the B-mode US and CEUS features of intestinal lymphoma and investigate the correlation of CEUS and histopathological features.METHODS This was a single-center retrospective study.Eighteen patients with histologically confirmed intestinal lymphoma underwent B-mode US and CEUS examinations between October 2016 and November 2019.We summarized the features of Bmode US and CUES imaging of intestinal lymphoma and compared the frequency of tumor necrosis in intestinal lymphomas with reference to different pathological subtypes(aggressive or indolent)and clinical stage(early or advanced).The time–intensity curve parameters of CEUS were also compared between patients with normal and elevated serum lactate dehydrogenase.RESULTS In B-mode imaging,four patterns were observed in intestinal lymphoma:Mass type(12/18,66.7%),infiltration type(1/18,5.6%),mesentery type(4/18,22.2%)and mixed type(1/18,5.6%).All cases were hypoechoic and no cystic areas were detected.On CEUS,most cases(17/18,94.4%)showed arterial hyperechoic enhancement.All cases showed arterial enhancement followed by venous wash out.A relatively high rate of tumor necrosis(11/18,61.1%)was observed in this study.Tumor necrosis on CEUS was more frequent in aggressive subtypes(10/13,76.9%)than in indolent subtypes(1/5,20.0%)(P=0.047).There were no correlations between tumor necrosis and lesion size and Ann Arbor stage.There was no significant difference in time–intensity curve parameters between normal and elevated lactate dehydrogenase groups.CONCLUSION B-mode US and CEUS findings of intestinal lymphoma are characteristic.We observed a high rate of tumor necrosis,which appeared more frequently in aggressive pathological subtypes of intestinal lymphoma. 展开更多
关键词 Intestinal lymphoma Contrast enhanced ultrasound b-mode ultrasound Histopathological features Lactate dehydrogenase Quantitative diagnosis
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A Study on the Temperature Correlation of B-mode Ultrasonic Image Gray for Noninvasive Temperature Monitoring in Hyperthermia 被引量:3
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作者 WU Shui-cai Ren Xin-ying Bai Yan-ping Zeng Yi 《Chinese Journal of Biomedical Engineering(English Edition)》 2006年第1期26-30,共5页
This paper deals with the temperature correlation of gray scale of B-mode ultrasound image from heated tissue. In this study, many in-vitro fresh pig livers are heated in a temperature range from 28 ℃ to 45℃, from w... This paper deals with the temperature correlation of gray scale of B-mode ultrasound image from heated tissue. In this study, many in-vitro fresh pig livers are heated in a temperature range from 28 ℃ to 45℃, from which a series of B-mode ultrasonic images of livers were obtained. The gray-value is evaluated from the ultrasound images respectively. A correlation of the mean gray value of the selected regions (12×12 pixels) in B-mode ultrasonic images of liver and its temperature was pointed out. And the experiment results agreed the evaluation well. And it is possible to monitor the tissue temperature changing in hyperthermia using this correlation. 展开更多
关键词 b-mode ultrasound image TEMPERATURE correlation HYPERTHERMIA
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Pre-Trained Deep Neural Network-Based Computer-Aided Breast Tumor Diagnosis Using ROI Structures
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作者 Venkata Sunil Srikanth S.Krithiga 《Intelligent Automation & Soft Computing》 SCIE 2023年第1期63-78,共16页
Deep neural network(DNN)based computer-aided breast tumor diagnosis(CABTD)method plays a vital role in the early detection and diagnosis of breast tumors.However,a Brightness mode(B-mode)ultrasound image derives train... Deep neural network(DNN)based computer-aided breast tumor diagnosis(CABTD)method plays a vital role in the early detection and diagnosis of breast tumors.However,a Brightness mode(B-mode)ultrasound image derives training feature samples that make closer isolation toward the infection part.Hence,it is expensive due to a metaheuristic search of features occupying the global region of interest(ROI)structures of input images.Thus,it may lead to the high computational complexity of the pre-trained DNN-based CABTD method.This paper proposes a novel ensemble pretrained DNN-based CABTD method using global-and local-ROI-structures of B-mode ultrasound images.It conveys the additional consideration of a local-ROI-structures for further enhan-cing the pretrained DNN-based CABTD method’s breast tumor diagnostic performance without degrading its visual quality.The features are extracted at various depths(18,50,and 101)from the global and local ROI structures and feed to support vector machine for better classification.From the experimental results,it has been observed that the combined local and global ROI structure of small depth residual network ResNet18(0.8 in%)has produced significant improve-ment in pixel ratio as compared to ResNet50(0.5 in%)and ResNet101(0.3 in%),respectively.Subsequently,the pretrained DNN-based CABTD methods have been tested by influencing local and global ROI structures to diagnose two specific breast tumors(Benign and Malignant)and improve the diagnostic accuracy(86%)compared to Dense Net,Alex Net,VGG Net,and Google Net.Moreover,it reduces the computational complexity due to the small depth residual network ResNet18,respectively. 展开更多
关键词 Computer-aided diagnosis breast tumor b-mode ultrasound images deep neural network local-ROI-structures feature extraction support vector machine
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Magnetic resonance cholangiopancreatography for the detection of pancreatic duct stones in patients with chronic pancreatitis 被引量:3
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作者 Zhen-Hua Ma Qing-Yong Ma Huan-Chen Sha Sheng-Li Wu Jun Wen 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第20期2543-2546,共4页
AIM:To assess the role of magnetic resonance cholangiopancreatography(MRCP) in detection of pancreatic duct stones(PDS) in patients with chronic pancreatitis(CP).METHODS:Clinical data of 78 CP patients who were treate... AIM:To assess the role of magnetic resonance cholangiopancreatography(MRCP) in detection of pancreatic duct stones(PDS) in patients with chronic pancreatitis(CP).METHODS:Clinical data of 78 CP patients who were treated at the First Affi liated Hospital of Xi'an Jiaotong University(China) between January 2004 and July 2008 were retrospectively analyzed.A predictive model of pancreatic duct stones was established through logistic regression and its effectiveness was verifi ed.Among these patients, MRCP was performed in 60 patients who served as a control group, while 44 patients with a higher predictive value than the entry threshold of the predictive model served as an experimental group.RESULTS:The positive rate of PDS in the 78 patients with CP was 19.2%(15/78).The predictive entry threshold of the predictive model was 5%(P < 0.05).The possibility of existence of PDS could be predicted according to the following 4 indexes:gastrointestinal symptoms, intermittent abdominal pain, diabetes mellitus(DM)/impaired glucose tolerance(IGT) and positive B-mode ultrasound results.The incidence of PDS in the experimental group was higher than that in the control group(P < 0.05).CONCLUSION:MRCP is strongly suggested for the detection of PDS in patients with gastrointestinal symptoms, intermittent abdominal pain, DM/IGT and positive B-mode ultrasound results. 展开更多
关键词 Chronic pancreatitis Pancreatic duct stone Magnetic resonance cholangiopancreatography b-mode ultrasound Logistic regression
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Estimation of Sediment Incipient Velocity Using B-Mode Ultrasound Imaging Technique 被引量:2
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作者 SONG Huan ZOU Xianjian 《Wuhan University Journal of Natural Sciences》 CAS CSCD 2015年第2期180-184,共5页
Sediment incipient velocity (SIV) is a vital parameter for sediment research and river dynamics. This paper describes a novel method of estimating SIV based on the known flow velocity in the movable-bed model experi... Sediment incipient velocity (SIV) is a vital parameter for sediment research and river dynamics. This paper describes a novel method of estimating SIV based on the known flow velocity in the movable-bed model experiment. In this method, we use B-mode ultrasound imaging technique to get video images of moving particles and topography under water. By statistical analysis of video images, the relationship between the average number of imaging particles and flow velocity is obtained. The relationship between the change rate of average number and flow velocity is analyzed in sediment incipient process. These relationships are used to estimate the SIV. Lastly, the changed topography verifies the estimated velocity. The results show there is a sudden change in these relationships which can be used to estimate the SIV with high resolution by using a B-mode ultrasound device. The estimated SIV of plastic sands (particle size is about 0.25 mm) is 3.64 cm · s^-1 and the estimated SIV of natural sands (particle size is about 0.25 mm) is 5.47 cm · s^-1in the same condition. 展开更多
关键词 sediment movement incipient velocity b-mode ultrasound imaging technique particle size
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肝出血的B超声像图与临床对照分析
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作者 王子干 李金业 +1 位作者 李英华 赵士齐 《影像诊断与介入放射学》 1993年第4期196-198,256,共4页
报告39例肝出血的B超声像图表现。其中有肝挫伤出血4例。肝包膜下血肿4例,肝实质及包膜破裂出血25例,肝实质内出血6例。31例为外伤性,8例为自发性。超声表现为无回声16例,低回声10例,高回声4例,混合型回声5例,肝脏正常回声4例。腹膜腔... 报告39例肝出血的B超声像图表现。其中有肝挫伤出血4例。肝包膜下血肿4例,肝实质及包膜破裂出血25例,肝实质内出血6例。31例为外伤性,8例为自发性。超声表现为无回声16例,低回声10例,高回声4例,混合型回声5例,肝脏正常回声4例。腹膜腔出现积液30例。超声诊断符合率为79.5%。文中主要就肝出血的B超声像图表现、漏误诊原因、非手术治疗的指征以及一些特殊征象进行了分析。 展开更多
关键词 肝出血 B型超声
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Light and sound- emerging imaging techniques for inflammatory bowel disease 被引量:1
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作者 Ferdinand Knieling Maximilian J Waldner 《World Journal of Gastroenterology》 SCIE CAS 2016年第25期5642-5654,共13页
Patients with inflammatory bowel disease are known to have a high demand of recurrent evaluation for therapy and disease activity. Further, the risk of developing cancer during the disease progression is increasing fr... Patients with inflammatory bowel disease are known to have a high demand of recurrent evaluation for therapy and disease activity. Further, the risk of developing cancer during the disease progression is increasing from year to year. New, mostly non-radiant, quick to perform and quantitative methods are challenging, conventional endoscopy with biopsy as gold standard. Especially, new physical imaging approaches utilizing light and sound waves have facilitated the development of advanced functional and molecular modalities. Besides these advantages they hold the promise to predict personalized therapeutic responses and to spare frequent invasive procedures. Within this article we highlight their potential for initial diagnosis, assessment of disease activity and surveillance of cancer development in established techniques and recent advances such as wide-view full-spectrum endoscopy, chromoendoscopy, autofluorescence endoscopy, endocytoscopy, confocal laser endoscopy, multiphoton endoscopy, molecular imaging endoscopy, B-mode and Doppler ultrasound, contrast-enhanced ultrasound, ultrasound molecular imaging, and elastography. 展开更多
关键词 Ulcerative colitis Crohn’ s disease ENDOSCOPY CHROMOENDOSCOPY Autofluorescence endoscopy Full-view full-spectrum endoscopy Confocal endomicroscopy Multiphoton endoscopy High-definition endoscopy ultrasound molecular imaging b-mode ultrasound Doppler ultrasound
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Ultrasonogram of hepatocellular carcinoma is associated with outcome after radiofrequency ablation 被引量:1
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作者 Kosaku Moribata Hideyuki Tamai +9 位作者 Naoki Shingaki Yoshiyuki Mori Tatsuya Shiraki Shotaro Enomoto Hisanobu Deguchi Kazuki Ueda Izumi Inoue Takao Maekita Mikitaka Iguchi Masao Ichinose 《World Journal of Hepatology》 CAS 2012年第12期374-381,共8页
AIM: To investigate the association between B-mode ultrasound classification of small hepatocellular carcinoma (HCC) and outcome after radiofrequency ablation (RFA).
关键词 b-mode ultrasound Hepatocellular carcinoma Radiofrequency ablation RECURRENCE PROGNOSIS
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Focal liver lesions found incidentally
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作者 Abdullah A Algarni Abdullah H Alshuhri +2 位作者 Majed M Alonazi Moustafa Mabrouk Mourad Simon R Bramhal 《World Journal of Hepatology》 CAS 2016年第9期446-451,共6页
Incidentally found focal liver lesions are a commonfinding and a reason for referral to hepatobiliary service.They are often discovered in patients with history of liver cirrhosis,colorectal cancer,incidentally during... Incidentally found focal liver lesions are a commonfinding and a reason for referral to hepatobiliary service.They are often discovered in patients with history of liver cirrhosis,colorectal cancer,incidentally during work up for abdominal pain or in a trauma setting.Specific points should considered during history taking such as risk factors of liver cirrhosis;hepatitis,alcohol consumption,substance exposure or use of oral con-traceptive pills and metabolic syndromes.Full blood count,liver function test and tumor markers can act as a guide to minimize the differential diagnosis and to categorize the degree of liver disease.Imaging should start with B-mode ultrasound.If available,contrast enhanced ultrasound is a feasible,safe,cost effective option and increases the ability to reach a diagnosis.Contrast enhanced computed tomography should be considered next.It is more accurate in diagnosis and better to study anatomy for possible operation.Contrast enhanced magnetic resonance is the gold standard with the highest sensitivity.If doubt still remains,the options are biopsy or surgical excision. 展开更多
关键词 Focal liver lesions b-mode ultrasound ultrasound Magnetic resonance Fine needle biopsy Computed tomography
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Comparison of the Five Different Methods in Arterial Diameter Measurement
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作者 Orhan Babuccu Bulent Tekerekoglu +2 位作者 Huseyin Ozdemir Halit Besir Sadi Gundogdu 《Surgical Science》 2011年第4期204-208,共5页
Background/Aims: In this study, the different types of arterial diameter measurement methods were com-pared with each other on rat model. Methods: The study was planned in three phases. In phase 1, all subjects (n = 3... Background/Aims: In this study, the different types of arterial diameter measurement methods were com-pared with each other on rat model. Methods: The study was planned in three phases. In phase 1, all subjects (n = 30) underwent high resolution B-mode ultrasound examination and external diameter of the right com-mon carotid artery (RCCA) was measured. In phase 2, RCCA was explored. In phase 3, rats were put into three groups. Group 1 was kept at -20oC, group 2 was embedded in 4% formaldehyde solution. In group 3, circulatory system was filled with %20 latex solution. In all groups, digital image of the RCCA was taken after the processes mentioned above. Images were assessed by Image – Pro Plus software. Results: The greatest average diameter was observed in the high resolution B-mode ultrasound (phase 1). In group 1 and 2, direct measurement of the RCCA on living animal (phase 2) gave significantly wider diameter than those obtained at phase 3 in the same groups. Direct (phase 2) and latex (phase 3) measurements were equal in group 3. Conclusion: High resolution B-mode ultrasound gives larger, probably actual diameter of the artery. Latex injection results might correspond those encountered during operation. 展开更多
关键词 ANIMAL Model ARTERIAL DIAMETER b-mode ultrasound
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An efficient quadrature demodulator for medical ultrasound imaging 被引量:3
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作者 Hao ZHOU Yin-fei ZHENG 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2015年第4期301-310,共10页
Quadrature demodulation is used in medical ultrasound imaging to derive the envelope and instantaneous phase of the received radio-frequency(RF) signal.In quadrature demodulation,RF signal is multiplied with the sine ... Quadrature demodulation is used in medical ultrasound imaging to derive the envelope and instantaneous phase of the received radio-frequency(RF) signal.In quadrature demodulation,RF signal is multiplied with the sine and cosine wave reference signal and then low-pass filtered to produce the base-band complex signal,which has high computational complexity.In this paper,we propose an efficient quadrature demodulation method for B-mode and color flow imaging,in which the RF signal is demodulated by a pair of finite impulse response filters without mixing with the reference signal,to reduce the computational complexity.The proposed method was evaluated with simulation and in vivo experiments.From the simulation results,the proposed quadrature demodulation method produced similar normalized residual sum of squares(NRSS) and velocity profile compared with the conventional quadrature demodulation method.In the in vivo color flow imaging experiments,the time of the demodulation process was 5.66 ms and 3.36 ms,for the conventional method and the proposed method,respectively.These results indicated that the proposed method can maintain the performance of quadrature demodulation while reducing computational complexity. 展开更多
关键词 b-mode ultrasound imaging Color flow imaging Quadrature demodulation Finite impulse responsefilter
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