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https://www.readbyqxmd.com/read/29783278/an-evidence-based-forensic-taxonomy-of-windows-phone-dating-apps
#1
Niken Dwi Wahyu Cahyani, Kim-Kwang Raymond Choo, Nurul Hidayah Ab Rahman, Helen Ashman
Advances in technologies including development of smartphone features have contributed to the growth of mobile applications, including dating apps. However, online dating services can be misused. To support law enforcement investigations, a forensic taxonomy that provides a systematic classification of forensic artifacts from Windows Phone 8 (WP8) dating apps is presented in this study. The taxonomy has three categories, namely: Apps Categories, Artifacts Categories, and Data Partition Categories. This taxonomy is built based on the findings from a case study of 28 mobile dating apps, using mobile forensic tools...
May 21, 2018: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29779158/diffusion-weighted-magnetic-resonance-enterography-for-prediction-of-response-to-tumor-necrosis-factor-inhibitors-in-stricturing-crohn-s-disease
#2
Marianne M Amitai, Eyal Klang, Asaf Levartovsky, Noa Rozendorn, Shelly Soffer, Gadeer Ali Taha, Bella Ungar, Tomer Greener, Shomron Ben-Horin, Rami Eliakim, Uri Kopylov
BACKGROUND AND AIMS: Distinguishing between fibrotic and inflammatory strictures in Crohn's disease (CD) is still challenging. The capacity of diffusion-weighted (DWI) magnetic resonance (MRE) to identify intestinal fibrosis was recently demonstrated; however, the therapeutic implications of this association have never been evaluated. The aim of the current study was to identify imaging features, including DWI, which can predict response to anti-inflammatory treatment in patients with stricturing CD...
May 19, 2018: Abdominal Radiology
https://www.readbyqxmd.com/read/29777252/noninvasively-evaluating-the-grading-and-idh1-mutation-status-of-diffuse-gliomas-by-three-dimensional-pseudo-continuous-arterial-spin-labeling-and-diffusion-weighted-imaging
#3
Tingting Liu, Guang Cheng, Xiaowei Kang, Yibin Xi, Yuanqiang Zhu, Kai Wang, Chao Sun, Jing Ye, Ping Li, Hong Yin
PURPOSE: To noninvasively evaluate the value of three-dimensional pseudo-continuous arterial spin labeling (3D pCASL) and diffusion-weighted imaging (DWI) in diffuse gliomas grading as well as isocitrate dehydrogenase (IDH) 1 mutation status. METHODS: Fifty-six patients with pathologically confirmed diffuse gliomas with preoperative 3D pCASL and DWI were enrolled in this study. The Student's t test and Mann-Whitney U test were used to evaluate differences in parameters of DWI and 3D pCASL between low and high grade as well as between mutant and wild-type IDH1 diffuse gliomas; receiver operator characteristic (ROC) analysis was used to assess the diagnostic performance...
May 18, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29774894/value-of-diffusion-weighted-imaging-for-monitoring-tissue-change-during-magnetic-resonance-guided-high-intensity-focused-ultrasound-therapy-in-bone-applications-an-ex-vivo-study
#4
Sharon L Giles, Jessica M Winfield, David J Collins, Ian Rivens, John Civale, Gail R Ter Haar, Nandita M deSouza
Background: Magnetic resonance (MR)-guided high-intensity focused ultrasound (HIFU) can palliate metastatic bone pain by periosteal neurolysis. We investigated the value of diffusion-weighted imaging (DWI) for monitoring soft tissue changes adjacent to bone during MR-guided HIFU. We evaluated the repeatability of the apparent diffusion coefficient (ADC) measurement, the temporal evolution of ADC change after sonication, and its relationship with thermal parameters. Methods: Ex-vivo experiments in lamb legs ( n = 8) were performed on a Sonalleve MR-guided HIFU system...
2018: European radiology experimental
https://www.readbyqxmd.com/read/29774316/dual-phase-adc-modelling-of-breast-masses-in-diffusion-weighted-imaging-comparison-with-histopathologic-findings
#5
Gökhan Ertaş, Can Onaygil, Onur Buğdaycı, Erkin Arıbal
Objective: To investigate the diagnostic value of dual-phase apparent diffusion coefficient (ADC) compared to traditional ADC values in quantitative diffusion-weighted imaging (DWI) for differentiating between benign and malignant breast masses. Materials and Methods: Diffusion-weighted images of pathologically confirmed 88 benign and 85 malignant lesions acquired using a 3.0T MR scanner were analyzed. Small region-of-interests focusing on the highest signal intensity of lesions were used...
April 2018: European Journal of Breast Health
https://www.readbyqxmd.com/read/29774183/quantitative-parameters-of-intravoxel-incoherent-motion-diffusion-weighted-imaging-ivim-dwi-potential-application-in-predicting-pathological-grades-of-pancreatic-ductal-adenocarcinoma
#6
Wanling Ma, Guangwen Zhang, Jing Ren, Qi Pan, Didi Wen, Jinman Zhong, Zhuoli Zhang, Yi Huan
Background: The aim of this study was to compare intravoxel incoherent motion diffusion weighted imaging (IVIM-DWI) parameters such as standard apparent diffusion coefficient (ADCstandard ), pure diffusion coefficient (Dslow ), pseudodiffusion coefficient (Dfast ) and perfusion fraction (ƒ) for differentiating pancreatic ductal adenocarcinoma (PDAC) with different pathological grades. Methods: Institutional Review Board of our hospital approved this study protocol...
April 2018: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29774180/survival-prediction-based-on-qualitative-mri-diffusion-signature-in-patients-with-recurrent-high-grade-glioma-treated-with-bevacizumab
#7
Pradeep Goyal, Mary Tenenbaum, Sonali Gupta, Puneet S Kochar, Alok A Bhatt, Manisha Mangla, Yogesh Kumar, Rajiv Mangla
Background: Bevacizumab was approved by the FDA for the treatment of recurrent or progressive glioblastoma (GBM). Imaging responses are typically assessed by gadolinium-enhanced MRI. We sought to determine the significance of qualitative diffusion signature (manifest as variable degree of dark signal) on ADC maps in recurrent gliomas after treatment with bevacizumab. Methods: We performed an institutional review board (IRB) approved retrospective study on patients who underwent MRI of the brain after 8 weeks of receiving bevacizumab for recurrent glioma...
April 2018: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29773299/diffusion-mri-in-acute-nervous-system-injury
#8
Matthew D Budde, Nathan P Skinner
Diffusion weighted magnetic resonance imaging (DWI) and related techniques such as diffusion tensor imaging (DTI) are uniquely sensitive to the microstructure of the brain and spinal cord. In the acute aftermath of nervous system injury, for example, DWI reveals changes caused by injury that remains invisible on other MRI contrasts such as T2 -weighted imaging. This ability has led to a demonstrated clinical utility in cerebral ischemia. However, despite strong promise in preclinical models and research settings, DWI has not been as readily adopted for other acute injuries such as traumatic spinal cord, brain, or peripheral nerve injury...
April 30, 2018: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/29772614/-a-case-of-retroperitoneal-liposarcoma-in-which-magnetic-resonance-imaging-was-useful-in-the-decision-of-resection-of-primary-and-recurrenttumors
#9
Sohei Kuribayashi, Yasutomo Nakai, Hirotaka Tsuji, Satoru Yumiba, Koji Hatano, Masashi Nakayama, Kenichi Kakimoto, Chiaki Kubo, Kazuo Nishimura
A 47-year-old female was referred to our hospital because of retroperitoneal tumor which was detected by computer tomography (CT). Since the tumor was considered to be benign by magnetic resonance imaging (MRI), she was followed by MRI every 3 months. The site of the tumor was gradually increased, and 15 months after presentation, a lesion with high signal intensity on diffusion weighted image (DWI) appeared in the tumor. At that time, we performed tumor resection considering the tumor to be malignant. Pathological diagnosis was dedifferentiated liposarcoma...
April 2018: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/29771445/tirofiban-combined-with-rt-pa-intraarterial-thrombolysis-improves-the-recanalization-rate-of-acute-middle-cerebral-artery-occlusion-in-rabbits
#10
Y-J Yu, W Xiong
OBJECTIVE: To investigate the curative effect of tirofiban combined with recombinant tissue-plasminogen activator (rt-PA) selective intra-arterial thrombolysis on acute middle cerebral artery occlusion (MCAO). MATERIALS AND METHODS: A total of 60 adult male Japanese white rabbits weighing 2.5-3.0 kg were selected, and the acute cerebral infarction model was established via autologous thromboembolism of middle cerebral artery. Rabbits were randomly divided into 4 groups: tirofiban group (Ti group, 5 μg/kg, n=15), rt-PA group (rt-PA group, 2 mg/kg, n=15), tirofiban + rt-PA group (Ti + rt-PA group, 3 μg/kg Ti + 1 mg/kg rt-PA, n=15), and control group (Co group, n=15)...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29766474/masses-of-developmental-and-genetic-origin-affecting-the-paediatric-craniofacial-skeleton
#11
REVIEW
Salvatore Stefanelli, Pravin Mundada, Anne-Laure Rougemont, Vincent Lenoir, Paolo Scolozzi, Laura Merlini, Minerva Becker
Although rare, masses and mass-like lesions of developmental and genetic origin may affect the paediatric craniofacial skeleton. They represent a major challenge in clinical practice because they can lead to functional impairment, facial deformation and disfigurement. The most common lesions include fibrous dysplasia, dermoid cysts, vascular malformations and plexiform neurofibromas. Less common lesions include torus mandibularis and torus palatinus, cherubism, nevoid basal cell carcinoma syndrome, meningoencephalocele and nasal sinus tract...
May 15, 2018: Insights Into Imaging
https://www.readbyqxmd.com/read/29764118/longitudinal-assessment-of-intravoxel-incoherent-motion-diffusion-weighted-imaging-in-evaluating-the-radio-sensitivity-of-nasopharyngeal-carcinoma-treated-with-intensity-modulated-radiation-therapy
#12
Youping Xiao, Ying Chen, Yunbin Chen, Zhuangzhen He, Yiqi Yao, Jianji Pan
Purpose: Intravoxel incoherent motion diffusion-weighted imaging (IVIM-DWI) was evaluated regarding its ability to preliminarily predict the short-term treatment response of nasopharyngeal carcinoma (NPC) following intensity-modulated radiation therapy. Methods: IVIM-DWI with 14 b-factors (0-1,000 s/mm2) was performed with a 3T MR system on 47 consecutive NPCs before, during (end of the 5th, 10th, 15th, 20th, and 25th fractions), and after fractional radiotherapy...
May 14, 2018: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/29764037/-the-value-of-high-resolution-diffusion-weighted-imaging-in-differentiating-benign-and-malignant-epithelial-tumors-of-parotid-gland
#13
B H Wen, J L Cheng, H X Zhang, Z X Zhang, F F Wang, K K Xue
Objective: To investigate the diagnostic value of RESOLVE DWI in the evaluation of benign and malignant epithelial tumors of parotid gland. Methods: A total of 106 patients in the First Affiliated Hospital of Zhengzhou University with epithelial tumors of parotid gland confirmed by pathology from July 2015 to October 2017 were retrospectively analyzed. All patients underwent preoperative routine MRI and RESOLVE DWI, the ADC average values were calculated, t test were used to compare the ADC values of benign and malignant epithelial tumors of parotid gland...
May 8, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29764033/-the-combined-application-of-magnetic-resonance-dti-and-3d-pcasl-in-differential-diagnosis-of-hyper-acute-and-acute-ischemic-cerebral-infarction
#14
Z Y Dai, F Chen, L Z Yao, C S Dong, H C Shi, P L Pan, Y Liu, Z P Zhang
Objective: To explore the clinical value of magnetic resonance diffusion tensor imaging (DTI) combined with 3D pseudo continuous arterial spin labeling (3D-pcASL) perfusion imaging in differential diagnosis of hyper-acute and acute ischemic cerebral infarction. Methods: A total of 42 patients with confirmed unilateral ischemic cerebral infarction from February 2015 to October 2017 of Affiliated Yancheng Hospital of Southeast University Medical College were collected. DTI and 3D-pcASL images of hyper-acute (14 patients, group A) and acute (28 patients, group B) ischemic cerebral infarction were retrospectively analyzed...
May 8, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29761595/radiomics-analysis-of-apparent-diffusion-coefficient-in-cervical-cancer-a-preliminary-study-on-histological-grade-evaluation
#15
Ying Liu, Yuwei Zhang, Runfen Cheng, Shichang Liu, Fangyuan Qu, Xiaoyu Yin, Qin Wang, Bohan Xiao, Zhaoxiang Ye
BACKGROUND: The role of apparent diffusion coefficient (ADC)-based radiomics features in evaluating histopathological grade of cervical cancer is unresolved. PURPOSE: To determine if there is a difference between radiomics features derived from center-slice 2D versus whole-tumor volumetric 3D for ADC measurements in patients with cervical cancer regarding tumor histopathological grade, and systematically assess the impact of the b value on radiomics analysis in ADC quantifications...
May 14, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29761360/tumour-volume-of-resectable-oesophageal-squamous-cell-carcinoma-measured-with-mri-correlates-well-with-t-category-and-lymphatic-metastasis
#16
Lan Wu, Jing Ou, Tian-Wu Chen, Rui Li, Xiao-Ming Zhang, Yan-Li Chen, Yu Jiang, Jian-Qiong Yang, Jin-Ming Cao
OBJECTIVES: To determine association of gross tumour volume (GTV) of resectable oesophageal squamous cell carcinoma (SCC) measured on T2 -weighted imaging (T2 WI), contrast-enhanced T1 -weighted imaging (CE-T1 WI) and diffusion-weighted imaging (DWI) with T category and lymphatic metastasis (LM). METHODS: Sixty oesophageal SCC patients underwent fat-suppressed T2 WI, CE-T1 WI and DWI with b values of 0, 500 and 800 s/mm2 . GTV was measured on three sequences. Statistical analyses were performed to determine association of GTV with T category and LM...
May 14, 2018: European Radiology
https://www.readbyqxmd.com/read/29761011/associations-between-apparent-diffusion-coefficient-and-electromyography-parameters-in-myositis-a-preliminary-study
#17
Hans-Jonas Meyer, Alexander Emmer, Malte Kornhuber, Alexey Surov
Objective: MRI is widely used in several muscle disorders. Diffusion-weighted imaging (DWI) is an emergent imaging modality sensitive to microstructural alterations in tissue. The apparent diffusion coefficient (ADC) is used to quantify the random motion of water molecules. Electromyography (EMG) is a clinically used diagnostic tool in myositis. The aim of this study was to elucidate possible associations between ADC values and EMG findings in myositis patients. Method: Seven patients (eight investigated muscles) with myositis (mean age 51...
May 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29756324/prospective-frequency-correction-using-outer-volume-suppression-localized-navigator-for-mr-spectroscopy-and-spectroscopic-imaging
#18
Chu-Yu Lee, In-Young Choi, Phil Lee
PURPOSE: New frequency correction methods are required to achieve the accurate measurement of frequency drifts in MRS and MRSI. We present a prospective frequency correction method with outer volume suppression (OVS)-based localization and selective water excitation for effective frequency correction with better SNR improvement compared to other techniques. METHODS: An OVS-localized navigator was developed to prospectively correct frequency drifts during MRS and MRSI measurements...
May 13, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29755991/drying-rate-and-product-quality-evaluation-of-roselle-hibiscus-sabdariffa-l-calyces-extract-dried-with-foaming-agent-under-different-temperatures
#19
Mohamad Djaeni, Andri Cahyo Kumoro, Setia Budi Sasongko, Febiani Dwi Utari
The utilisation of roselle ( Hibiscus sabdariffa L.) calyx as a source of anthocyanins has been explored through intensive investigations. Due to its perishable property, the transformation of roselle calyces into dried extract without reducing their quality is highly challenging. The aim of this work was to study the effect of air temperatures and relative humidity on the kinetics and product quality during drying of roselle extract foamed with ovalbumin and glycerol monostearate (GMS). The results showed that foam mat drying increased the drying rate significantly and retained the antioxidant activity and colour of roselle calyces extract...
2018: International Journal of Food Science
https://www.readbyqxmd.com/read/29753491/comparison-of-the-diagnostic-value-of-monoexponential-biexponential-and-stretched-exponential-diffusion-weighted-mri-in-differentiating-tumor-stage-and-histological-grade-of-bladder-cancer
#20
Yanchun Wang, Daoyu Hu, Hao Yu, Yaqi Shen, Hao Tang, Ihab R Kamel, Zhen Li
RATIONALE AND OBJECTIVES: We aimed to determine the utility of various diffusion parameters obtained from monoexponential, biexponential, and stretched exponential diffusion-weighted imaging (DWI) models in differentiating tumor stage and grade of bladder cancer. MATERIALS AND METHODS: Forty-five patients with pathologically confirmed bladder cancer underwent multi-b-value DWI. An apparent diffusion coefficient (ADC) was calculated from DWI by using a monoexponential model...
May 9, 2018: Academic Radiology
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