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Quantitative Imaging in Medicine and Surgery

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https://read.qxmd.com/read/30701167/a-case-of-iga-nephropathy-with-deep-venous-thrombosis-in-the-mesentery-and-lower-extremities
#1
Hong Tang, Lei Zhang, Wei Zhao, Rongquan Chen, Min Xie
No abstract text is available yet for this article.
December 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30701166/acute-inflammation-of-the-stomach-mimicking-linitis-plastica
#2
Tuulia Simpanen, Mark Watson
No abstract text is available yet for this article.
December 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30701165/discrimination-of-smoking-status-by-mri-based-on-deep-learning-method
#3
Shuangkun Wang, Rongguo Zhang, Yufeng Deng, Kuan Chen, Dan Xiao, Peng Peng, Tao Jiang
Background: This study aimed to assess the feasibility of deep learning-based magnetic resonance imaging (MRI) in the prediction of smoking status. Methods: The head MRI 3D-T1WI images of 127 subjects (61 smokers and 66 non-smokers) were collected, and 176 image slices obtained for each subject. These subjects were 23-45 years old, and the smokers had at least 5 years of smoking experience. Approximate 25% of the subjects were randomly selected as the test set (15 smokers and 16 non-smokers), and the remaining subjects as the training set...
December 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30701164/quantifying-choriocapillaris-flow-deficits-using-global-and-localized-thresholding-methods-a-correlation-study
#4
Zhongdi Chu, Qinqin Zhang, Hao Zhou, Yingying Shi, Fang Zheng, Giovanni Gregori, Philip J Rosenfeld, Ruikang K Wang
Background: To investigate the correlation and agreement of two previously published choriocapillaris (CC) quantification methods using a normal database with swept-source optical coherence tomography angiography (SS-OCTA). Methods: Normal adult subjects from all age groups imaged by SS-OCTA were used in this study. Each subject was imaged with 3 mm × 3 mm and 6 mm × 6 mm scan patterns centered on fovea, upon which en face CC images were generated by segmenting volumetric OCTA data...
December 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30701163/left-ventricular-rotational-abnormalities-following-successful-kidney-transplantation-insights-from-the-three-dimensional-speckle-tracking-echocardiographic-magyar-path-study
#5
Bernadett Borda, Árpád Kormányos, Péter Domsik, Anita Kalapos, Csaba Lengyel, Nóra Ambrus, György Lázár, Tamás Forster, Attila Nemes
Background: Kidney transplantation (KTx) is the preferred treatment for virtually all suitable candidates with end-stage renal disease. There is limited information on left ventricular (LV) rotational mechanics post-KTx, therefore the present study aimed to assess it and to compare it to that of age- and gender-matched healthy controls. Methods: The present study comprised 42 KTx patients, from which 4 patients were excluded due to insufficient image quality (mean age: 46...
December 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30701162/acoustic-field-simulation-method-for-arbitrarily-shaped-transducer-with-dynamically-refined-sub-elements
#6
Jiaying Xiao, Mengdi Xiao, Bo Wang, Zhongchao Huang, Kuan Peng
Background: Simulation of the emitted acoustic field is crucial to the design of ultrasound transducers. The method based on the spatial impulse response (SIR) and aperture discretization provides a powerful tool to study the acoustic field emitted by a transducer with complex aperture geometry and sophisticated apodization/excitation pattern. Methods: In this work, a new method based on the dynamically refined sub-elements (SE) is employed to discrete the aperture and generate the SIR...
December 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30701161/ultrasound-molecular-imaging-for-differentiation-of-benign-and-malignant-tumors-in-patients
#7
EDITORIAL
Fei Yan, Zhuqing Song, Meng Du, Alexander L Klibanov
No abstract text is available yet for this article.
December 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30701160/3d-printing-in-medicine-current-applications-and-future-directions
#8
EDITORIAL
Zhonghua Sun
No abstract text is available yet for this article.
December 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30598883/unusual-magnetic-resonance-imaging-findings-in-a-patient-with-posterior-reversible-encephalopathy-syndrome
#9
Hyug-Gi Kim, Kyung Mi Lee, Jin San Lee
No abstract text is available yet for this article.
November 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30598882/quantitative-diffusion-magnetic-resonance-imaging-in-head-and-neck-tumors
#10
REVIEW
Seyedmehdi Payabvash
In patients with head and neck cancer, conventional anatomical magnetic resonance imaging (MRI) scans are commonly used for identification of primary lesion, assessment of structural distortion, and presence of metastatic lymph nodes. However, quantitative analysis of diffusion MRI can provide added value to structural and anatomical evaluation of head and neck tumors (HNT), by differentiation of primary malignant process, prognostic prediction, and treatment monitoring. In this article, we will review the applications of quantitative diffusion MRI in identification of primary malignant tissue, differentiation of tumor pathology, prediction of molecular phenotype, monitoring of treatment response, and evaluation of posttreatment changes in patient with HNT...
November 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30598881/imaging-of-cerebrovascular-complications-of-infection
#11
REVIEW
Guiquan Shen, Xudong Shen, Wei Pu, Gang Zhang, Alexander Lerner, Bo Gao
Cerebrovascular complications may occur in infectious diseases in the setting of infective endocarditis, central nervous system (CNS) infections, systemic bacteremia and sepsis. Cerebrovascular complications of infections include vasculitis, mycotic aneurysms, and thrombophlebitis. Infectious vasculitis of the CNS may cause cerebral hemorrhage, infarction or ischemia. Ruptured aneurysms may endanger the patient's life. Infectious thrombophlebitis may cause intracranial pressure to increase and lead to cerebral hemorrhage...
November 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30598880/brain-morphological-alteration-and-cognitive-dysfunction-in-multiple-system-atrophy
#12
Lihong Zhang, Li Zhang, Fang Xue, Kathy Yue, Haixin Peng, Ya'nan Wu, Ou Sha, Lan Yang, Yan Ding
Multiple system atrophy (MSA) is a progressive neurodegenerative disease in adults, manifesting various clinical symptoms including autonomic nerve dysfunction, Parkinson's syndrome, cerebellar ataxia, and pyramidal sign. The clinical diagnosis and classification of MSA are mainly dependent on motion and non-motion symptoms, such as autonomic nerve dysfunction. In addition, an increasing amount of clinical and pathological evidence has shown that about half of the MSA patients exhibit distinct types and levels of cognitive dysfunction...
November 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30598879/alterations-of-the-default-mode-network-and-cognitive-impairment-in-patients-with-unilateral-chronic-tinnitus
#13
Yu-Chen Chen, Hong Zhang, Youyong Kong, Han Lv, Yuexin Cai, Huiyou Chen, Yuan Feng, Xindao Yin
Background: Previous studies have demonstrated that cognitive impairment is linked with neurophysiological alterations in chronic tinnitus. This study aimed to investigate the intrinsic functional connectivity (FC) pattern within the default mode network (DMN) and its associations with cognitive impairment in tinnitus patients using a resting-state functional magnetic resonance imaging (rs-fMRI). Methods: Thirty-five chronic unilateral tinnitus patients, and 50 healthy controls were recruited for rsfMRI scanning...
November 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30598878/the-structural-mri-markers-and-cognitive-decline-in-prodromal-alzheimer-s-disease-a-2-year-longitudinal-study
#14
Hongchun Wei, Min Kong, Chunhua Zhang, Lina Guan, Maowen Ba
Background: Being clinically diagnosed with a mild cognitive impairment (MCI) due to Alzheimer's disease (AD) is widely studied. Yet, the clinical and structural neuroimaging characteristics for prodromal AD, which are defined as A+T+MCI based on the AT (N) system are still highly desirable. This study evaluates the differences of the cognitive assessments and structural magnetic resonance imaging (MRI) between the early MCI (EMCI) and late MCI (LMCI) participants based on the AT (N) system...
November 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30598877/discrimination-and-conversion-prediction-of-mild-cognitive-impairment-using-convolutional-neural-networks
#15
Congling Wu, Shengwen Guo, Yanjia Hong, Benheng Xiao, Yupeng Wu, Qin Zhang
Background: Recently, studies have demonstrated that machine learning techniques, particularly cutting-edge deep learning technology, have achieved significant progression on the classification of Alzheimer's disease (AD) and its prodromal phase, mild cognitive impairment (MCI). Moreover, accurate prediction of the progress and the conversion risk from MCI to probable AD has been of great importance in clinical application. Methods: In this study, the baseline MR images and follow-up information during 3 years of 150 normal controls (NC), 150 patients with stable MCI (sMCI) and 157 converted MCI (cMCI) were collected from the Alzheimer's Disease Neuroimaging Initiative (ADNI)...
November 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30598876/pediatric-stroke-current-diagnostic-and-management-challenges
#16
EDITORIAL
Nikil K Rajani, Kirsten Pearce, Tom Campion, Vincenzo Salpietro, Mariana Planells, Winston Chong, Tufail Patankar, Kshitij Mankad
No abstract text is available yet for this article.
November 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30598875/atrophied-brain-lesion-volume-a-magnetic-resonance-imaging-biomarker-for-monitoring-neurodegenerative-changes-in-multiple-sclerosis
#17
EDITORIAL
Robert Zivadinov, Niels Bergsland, Michael G Dwyer
No abstract text is available yet for this article.
November 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30505725/haemostatic-material-surgicel-%C3%A2-mimicking-residual-tumour-magnetic-resonance-imaging-findings-in-operated-pediatric-neuro-oncology-cases
#18
Serena Staglianò, Felice D'Arco, Ai Peng Tan, Owase Jeelani, Giovanni Morana, Kshitij Mankad
No abstract text is available yet for this article.
October 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30505724/design-and-synthesis-of-magnetic-nanoparticles-for-biomedical-diagnostics
#19
REVIEW
Yuan Chen, Xianguang Ding, Yan Zhang, Auginia Natalia, Xuecheng Sun, Zhigang Wang, Huilin Shao
Sensitive and quantitative characterization of clinically relevant biomarkers can facilitate disease diagnosis and treatment evaluation. Magnetic nanomaterials and their biosensing strategies have recently received considerable attention. Magnetic signals experience little interference from native biological background as most biological molecules have negligible magnetic susceptibilities and thus appear transparent to external magnetic fields. Because of this unique property, magnetic sensing can be applied to both in vivo deep tissue imaging as well as ex vivo point-of-care diagnostics...
October 2018: Quantitative Imaging in Medicine and Surgery
https://read.qxmd.com/read/30505723/quantitative-ct-assessment-of-lung-injury-after-successful-cardiopulmonary-resuscitation-in-a-porcine-cardiac-arrest-model-of-different-downtimes
#20
Zhifeng Liu, Qingyu Liu, Gongfa Wu, Haigang Li, Yue Wang, Rui Chen, Cai Wen, Qin Ling, Zhengfei Yang, Wanchun Tang
Background: Utilize quantitative computed tomography (QCT) to detect and evaluate the severity of lung injury after successful cardiopulmonary resuscitation (CPR) in a porcine cardiac arrest (CA) model with different downtimes. Methods: Twenty-one male domestic pigs weighing 38±3 kg were randomized into 3 groups: the sham group (n=5), the ventricular fibrillation (VF) 5 min (VF5) group (n=8), and the VF 10 min (VF10) group (n=8). VF was induced and untreated for 5 (VF5 group) or 10 (VF10 group) min before the commencement of manual CPR...
October 2018: Quantitative Imaging in Medicine and Surgery
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