Results 51 to 60 of about 871,431 (301)

Image Quality and Dose Comparison of Single-Energy CT (SECT) and Dual-Energy CT (DECT)

Radiology Research and Practice, 2020
CT and its comprehensive usage have become one of the most indispensable components in medical field especially in the diagnosis of several diseases. SECT and DECT have developed CT diagnostic potentials in several means.
Ramin Ghasemi Shayan, Maryam Oladghaffari, Fakhrosadat Sajjadian, Mona Fazel Ghaziyani   +3 more
doaj   +1 more source

Realistic CT image simulation tools for laboratory based X-ray CT at UGCT [PDF]

, 2013
In laboratory based X-ray Computed Tomography (CT), the grey values in the resulting CT image depend on several scanning conditions such as the emitted spectrum, the response characteristics of the detector and beam filtration.
Brabant, Loes, Dierick, Manuel, Pauwels, Elin, Van Hoorebeke, Luc   +3 more
core  

PET/CT incidental detection of second tumor in patients investigated for pancreatic neoplasms [PDF]

, 2018
Positron Emission Tomography/computed tomography (PET/CT) is an imaging technique which has a role in the detection and staging malignancies (both in first diagnosis and follow-up).
Bissoli, Sergio, Fantin, Alberto, Moletta, Lucia, Passuello, Nicola, Sperti, Cosimo, Valmasoni, Michele   +5 more
core   +2 more sources

Patient‐specific pharmacogenomics demonstrates xCT as predictive therapeutic target in colon cancer with possible implications in tumor connectivity

Molecular Oncology, EarlyView.
This study integrates transcriptomic profiling of matched tumor and healthy tissues from 32 colorectal cancer patients with functional validation in patient‐derived organoids, revealing dysregulated metabolic programs driven by overexpressed xCT (SLC7A11) and SLC3A2, identifying an oncogenic cystine/glutamate transporter signature linked to ...
Marco Strecker, Keren Zohar, Martin Böttcher, Thomas Wartmann, Henry Freudenstein, Maximilian Doelling, Mihailo Andric, Wenjie Shi, Or Kakhlon, Katrin Hippe, Beatrix Jahnke, Dimitrios Mougiakakos, Franziska Baenke, Daniel Stange, Roland S. Croner, Michal Linial, Ulf D. Kahlert   +16 more
wiley   +1 more source

Feasibility analysis of non-electrocardiogram-triggered chest low-dose computed tomography using a kV-independent reconstruction algorithm for predicting cardiovascular disease risk in patients receiving maintenance hemodialysis

BMC Cardiovascular Disorders
Objectives This study aimed to evaluate the feasibility and accuracy of non-electrocardiogram (ECG)-triggered chest low-dose computed tomography (LDCT) with a kV-independent reconstruction algorithm in assessing coronary artery calcification (CAC) degree
Xiangming Wang, Ao Liu, Yan Zhao, Xianbo Yu, Yushuo Cao, Min Li, Jing Liu, Yu Du, Li Yang   +8 more
doaj   +1 more source

An evidence-based algorithm for the utility of FDG-PET for diagnosing Alzheimer's disease according to presence of medial temporal lobe atrophy [PDF]

, 2015
BackgroundImaging biomarkers for Alzheimer's disease include medial temporal lobe atrophy (MTLA) depicted on computed tomography (CT) or magnetic resonance imaging (MRI) and patterns of reduced metabolism on fluorodeoxyglucose positron emission ...
Cam Donaldson, Christopher Davison, David Williams, Fahn, Jim Lloyd, John T. O'Brien, Karl Herholz, Kirsty Olsen, Michael J. Firbank, Nicky Barnett, Robert Barber, Roth, Schmidt, Sean J. Colloby   +13 more
core   +1 more source

Plasma extrachromosomal circular DNA as a biomarker in EGFR‐targeted therapy of non‐small cell lung cancer

Molecular Oncology, EarlyView.
Detection of extrachromosomal circular DNA (eccDNA) in plasma samples from EGFR‐mutated non‐small cell lung cancer patients. Plasma was collected before and during treatment with the EGFR‐tyrosine kinase inhibitor osimertinib. Plasma eccDNA was detected in all cancer samples, and the presence of the EGFR gene on eccDNA serves as a potential biomarker ...
Simone Stensgaard, Sarmad Mehmood, Eva Boysen Fynboe Ebert, Peter Meldgaard, Anindya Dutta, Boe S. Sorensen   +5 more
wiley   +1 more source

Central hyperthyroidism due to an ectopic TSH-secreting pituitary tumor: a case report and literature review

Frontiers in Endocrinology
Ectopic thyroid-stimulating hormone (TSH)-secreting tumors are extremely rare, with only 15 reported cases in the literature. Herein, we described a 60-year-old female patient with thyrotoxicosis and elevated or unsuppressed levels of TSH. Family history
Chonggui Zhu, Tong Liu, Haonan Yu, Lina Chang, Xiaona Zhang, Jia Yao, Geng Zhang, Qiusong Chen, Qing He, Ming Liu   +9 more
doaj   +1 more source

Image quality and radiation dose assessment for the clinically applied 16-slice CT scanner using PMMA phantom and quality assurance phantom

The Egyptian Journal of Radiology and Nuclear Medicine, 2023
The goal of this study was to assess the radiation dose delivered accuracy and the acceptable image quality parameter from the 16-slice Philips CT scanner in order to evaluate the current methodology for quality controls of computed tomography systems ...
Tadelech Sisay Mekonin, Tilahun Tesfaye Deressu   +1 more
doaj   +1 more source

Transdifferentiation of pancreatic stromal tumor into leiomyosarcoma with metastases to liver and peritoneum: a case report [PDF]

, 2016
Follow-up ultrasound and abdominal CT radiographs at 6-month (A), 10-month (B, C, D) and 13-month follow-up (E, F) examination. CT, computed tomography.
Chao Lin, Dan Zhang, Jiyao Sheng, Kai Zhao, Lianyue Guan, Liping Wang, Xuewen Zhang   +6 more
core   +3 more sources