Showing 901 - 920 results of 1,065 for search '"CT scan"', query time: 0.06s Refine Results
  1. 901

    Ischemic colitis presenting as a colonic mass: a case report and diagnostic challenges by Lin Xu, Yuqi Wu, Yuqi Wu, Shangjin Li, Shangjin Li, Xinbo Chen, Dong Zhang, Boqian Chen, Shaoju Guo

    Published 2025-01-01
    “…Illustrating these challenges is the case of a 53-year-old male patient who arrived at the hospital exhibiting abdominal pain and diarrhea. Enhanced CT scans and colonoscopy identified a mass in the ileocecal region of the colon, and subsequent tissue biopsy revealed ischemic lesions in the submucosa. …”
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  2. 902

    Custom-Made Computer-Aided-Design/Computer-Aided-Manufacturing Biphasic Calcium-Phosphate Scaffold for Augmentation of an Atrophic Mandibular Anterior Ridge by Francesco Guido Mangano, Piero Antonio Zecca, Ric van Noort, Samvel Apresyan, Giovanna Iezzi, Adriano Piattelli, Aldo Macchi, Carlo Mangano

    Published 2015-01-01
    “…This study demonstrates that custom-made scaffolds can be fabricated by combining CT scans and CAD/CAM techniques. Further studies on a larger sample of patients are needed to confirm these results.…”
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  3. 903

    A rare case of brain hemorrhage secondary to venous angioma in the right parietal lobe: case report and literature review by Juan Manuel Altamirano, Karla Salinas-Barboza, Eduardo Lopez-Ortiz, Luis Miguel Alfonso Fernandez-Gutiérrez

    Published 2025-02-01
    “…Case presentation A 41-year-old woman experienced a sudden and severe headache, dizziness, left-sided hemihypoesthesia followed by seizures. Initial brain CT scans and MRI revealed a right parietal lobe bleed with a nodular hyperintense lesion on T1 and T2 sequences with lobulated borders and a hemosiderin halo on gradient echo sequences, initially suspected to be a cavernoma. …”
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  4. 904

    Micro-CT imaging of Thiel-embalmed and iodine-stained human temporal bone for 3D modeling by Sebastian Halm, David Haberthür, Elisabeth Eppler, Valentin Djonov, Andreas Arnold

    Published 2021-06-01
    “…The contralateral temporal bone was used to evaluate segmentation and three-dimensional (3D) modeling after iodine staining and micro-CT scanning. Results The digital and physical stapes measurements differed by 0.01–0.17 mm or 1–19%, respectively, but correlated well with the literature values. …”
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  5. 905

    Impact of a Segmented-Scan Strategy on Residual Stress and Fit Accuracy of Dental Prostheses Fabricated via Laser-Beam Powder-Bed Fusion by Yoshio Kobayashi, Atsushi Takaichi, Yuka Kajima, Wenrui Qu, Noriyuki Wakabayashi

    Published 2025-01-01
    “…Residual stress was measured in the X and Y directions at three points using X-ray diffraction, while CT scans were used to count internal microstructures. …”
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  6. 906

    Can laser irradiation improve the strength of weak rock mass? by Xiaowei Feng, Peng Huang, Valter Carvelli, Gongshun Lin, Chuankai Zhu, Fengzhen He

    Published 2025-01-01
    “…Multi-technique observations and measurements were used to fully understand the peculiar modifications of the specimens under laser treatment, i.e. mechanical loading, acoustic emission (AE) monitoring, digital image correlation (DIC) strain field evaluation, infrared thermography (IRT) monitoring and X-ray computed tomography (CT) scanning. The results showed that, in addition to the effects already demonstrated, laser irradiation can improve the strength of the soft rock, especially in the saturated state. …”
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  7. 907

    Crack propagation and CT imaging of internal cracks in rocks damaged by pre-compression under explosive loading by Qiangqiang Zheng, Pingfeng Li, Ying Xu, Bing Cheng, Hao Hu, Hao Shi, Shoudong Xie

    Published 2025-03-01
    “…A theoretical model for predicting blast-induced crack propagation radius in damaged sandstone is established and validated through integrated laboratory blast experiments, CT scanning, and PFC-2D numerical simulations, demonstrating a prediction error margin below 5%. …”
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  8. 908
  9. 909

    Kinect-Based Correction of Overexposure Artifacts in Knee Imaging with C-Arm CT Systems by Johannes Rausch, Andreas Maier, Rebecca Fahrig, Jang-Hwan Choi, Waldo Hinshaw, Frank Schebesch, Sven Haase, Jakob Wasza, Joachim Hornegger, Christian Riess

    Published 2016-01-01
    “…To demonstrate a novel approach of compensating overexposure artifacts in CT scans of the knees without attaching any supporting appliances to the patient. …”
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  10. 910

    Reduced contrast agent volume using a heart-rate dependent and free-breathing scanning protocol in coronary computed tomography angiography (CTA) for patients with chronic obstruct... by Zengkun Wang, Guoyue Chen, Dewei Song, Xiaodie Xu, Chu Chu, Shuning Zhang, Huijing Chai, Hairong Yu, Xiaomei Luan, Peiji Song

    Published 2025-01-01
    “…Objective The aim of this study was to evaluate the feasibility of a personalized CT scanning protocol that was tailored to patients’ heart rate and free-breathing for coronary CTA of patients with COPD. …”
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  11. 911

    Automatic Aortic Valve Extraction Using Deep Learning with Contrast-Enhanced Cardiac CT Images by Soichiro Inomata, Takaaki Yoshimura, Minghui Tang, Shota Ichikawa, Hiroyuki Sugimori

    Published 2024-12-01
    “…Materials and Methods: A dataset of 32 contrast-enhanced cardiac CT scans was analyzed. The segmentation approach utilized the DeepLabv3+ model, while the object detection approach employed YOLOv2. …”
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  12. 912

    Biological age model using explainable automated CT-based cardiometabolic biomarkers for phenotypic prediction of longevity by Perry J. Pickhardt, Michael W. Kattan, Matthew H. Lee, B. Dustin Pooler, Ayis Pyrros, Daniel Liu, Ryan Zea, Ronald M. Summers, John W. Garrett

    Published 2025-02-01
    “…We apply these AI tools to abdominal CT scans from 123,281 adults (mean age, 53.6 years; 47% women; median follow-up, 5.3 years). …”
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  13. 913

    High-resolution X-ray phase-contrast tomography of human placenta with different wavefront markers by Sara Savatović, Davis Laundon, Fabio De Marco, Mirko Riedel, Jörg U. Hammel, Madleen Busse, Murielle Salomé, Lorella Pascolo, Irene Zanette, Rohan M. Lewis, Julia Herzen, Pierre Thibault

    Published 2025-01-01
    “…Here, we perform high-resolution $$\upmu$$ CT scans of an unstained human placenta specimen, using MBI with both a 2D grating and sandpaper as modulators, as well as conventional propagation-based imaging (PBI). …”
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  14. 914

    Initial Evaluation of Computer-Assisted Radiologic Assessment for Renal Mass Edge Detection as an Indication of Tumor Roughness to Predict Renal Cancer Subtypes by Rahul Rajendran, Kevan Iffrig, Deepak K Pruthi, Allison Wheeler, Brian Neuman, Dharam Kaushik, Ahmed M Mansour, Karen Panetta, Sos Agaian, Michael A. Liss

    Published 2019-01-01
    “…Tumor “Roughness” was based on image algorithm of tumor topographic features visualized on computed tomography (CT) scans. Univariant and multivariant statistical analyses are utilized for analysis. …”
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  15. 915

    Low-Rank Adaptation of Pre-Trained Large Vision Models for Improved Lung Nodule Malignancy Classification by Benjamin P. Veasey, Amir A. Amini

    Published 2025-01-01
    “…<italic>Methods:</italic> Utilizing two comprehensive lung nodule datasets, NLSTx and LIDC, which together encompass a diverse array of biopsy- and radiologist-confirmed lung CT scans, our rigorous experimental setup demonstrates that LoRA-adapted models markedly surpass traditional fine-tuning methods. …”
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  16. 916

    Sparse Codebook Model of Local Structures for Retrieval of Focal Liver Lesions Using Multiphase Medical Images by Jian Wang, Xian-Hua Han, Yingying Xu, Lanfen Lin, Hongjie Hu, Chongwu Jin, Yen-Wei Chen

    Published 2017-01-01
    “…This study investigates an improved codebook model for the fined-grained medical image representation with the following three advantages: (1) instead of SIFT, we exploit the local patch (structure) as the local descriptor, which can retain all detailed information and is more suitable for the fine-grained medical image applications; (2) in order to more accurately approximate any local descriptor in coding procedure, the sparse coding method, instead of K-means algorithm, is employed for codebook learning and coded vector calculation; (3) we evaluate retrieval performance of focal liver lesions (FLL) using multiphase computed tomography (CT) scans, in which the proposed codebook model is separately learned for each phase. …”
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  17. 917

    Incidental Detection of Adrenal Myelolipoma: A Case Report and Review of Literature by Junaid Nabi, Danish Rafiq, Fatema N. Authoy, Ghulam Nabi Sofi

    Published 2013-01-01
    “…Imaging techniques such as ultrasonography and CT scans as well as biochemical studies are useful for indicating the best treatment taking into account the size of the mass and possible hormone production. …”
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  18. 918

    Can Radiomics of Dynamic PET Imaging with 11C-methionine Predict EGFR Amplification Status in Glioblastoma? by Gleb DANILOV, Andrey POSTNOV, Diana KALAEVA, Nina VIKHROVA, Tatyana KOBYAKOVA

    Published 2024-11-01
    “…Materials and Methods: We analyzed 31 PET/CT scans from 31 patients (7 men 22.6% and 24 women 77.4%, mean age 59 ± 10 years). …”
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  19. 919

    A case report of confirmed difficult pulmonary tuberculosis based on the hybrid capture-based tNGS method by Weiqian Chen, Huimin Chen, Ze Liu, Xinle Chi, Yaomeng Chen, Huan Ye, Wenjie Huang, Chenlei Cao, Wei Weng

    Published 2025-02-01
    “…Case presentation A 29-year-old male presented with “fever accompanied by cough for more than 20 days.” Multiple chest CT scans revealed progressive enlargement of the right hilar lymph nodes and thickening of the interlobular septa in the right upper lobe. …”
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  20. 920

    A Retroperitoneal Leiomyosarcoma Presenting as an Adrenal Incidentaloma in a Subject on Warfarin by Ishrat N. Khan, Mohamed A. Adlan, Michael J. Stechman, Lakdasa D. Premawardhana

    Published 2015-01-01
    “…Ultrasound scans demonstrated left kidney scarring, but CT scans revealed an AI. MRI scans later confirmed the AI without significant fat and no interval growth. …”
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