Results 41 to 50 of about 2,135,866 (183)

Computed Tomography (CT) Standards [PDF]

, 2000
There is currently no standardized method to check the measurement capabilities of computed tomography (CT) systems within industry. The current method to determine the functionality of CT systems is by use of a test phantom to represent the actual part to be tested.
Hubert, R. R., Beach, J. M.
openaire   +2 more sources

The Added Value of (18) F-FDG Positron Emission Tomography/ Computed Tomography Compared to Contrast Enhanced Computed Tomography in the Detection and Assessment of Peritoneal Deposits of Colorectal Origin. [PDF]

Ain Shams Medical Journal
Background: The challenge of diagnosing peritoneal carcinomatosis from colorectal cancer is notable in oncological imaging. This retrospective study aims to evaluate the effectiveness of contrast-enhanced Multi-Detector Computed Tomography (MDCT) versus ...
Heba T-allah Elnaggar, Esraa Gad, Khaled Allam   +2 more
doaj   +1 more source

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

Cost-Effectiveness Analysis of ⁶⁸Ga DOTA-TATE PET/CT, ¹¹¹In-Pentetreotide SPECT/CT and CT for Diagnostic Workup of Neuroendocrine Tumors

Diagnostics, 2021
Neuroendocrine tumors (NETs) are relatively rare neoplasms arising from the hormone-producing neuroendocrine system that can occur in various organs such as pancreas, small bowel, stomach and lung.
Matthias Frank Froelich, Moritz Ludwig Schnitzer, Adrien Holzgreve, Felix Gerhard Gassert, Eva Gresser, Daniel Overhoff, Vincent Schwarze, Matthias Philipp Fabritius, Dominik Nörenberg, Niklas von Münchhausen, Nils Große Hokamp, Christoph J. Auernhammer, Harun Ilhan, Andrei Todica, Johannes Rübenthaler   +14 more
doaj   +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

Metastasis of breast cancer to liver through direct lymphatic drainage: a case report

Journal of International Medical Research, 2021
Breast cancer liver metastasis (BCLM) is considered to occur by hematogenous spread of primary breast cancer cells. We herein present a case of lymphatic BCLM that was confirmed by preoperative imaging for sentinel lymph node biopsy (SLNB).
Hiromi Tokisawa, Tomoyuki Aruga, Yuichi Kumaki, Naoko Iwamoto, Rika Yonekura, Toshiyuki Ishiba, Yayoi Honda, Mizuka Suzuki   +7 more
doaj   +1 more source

First-line treatments for extensive-stage small-cell lung cancer with immune checkpoint inhibitors plus chemotherapy: a China-based cost-effectiveness analysis

Frontiers in Immunology
ObjectiveTo determine the cost-effectiveness of imported immune checkpoint inhibitors (ICIs) such as atezolizumab and durvalumab, and domestic ICIs like serplulimab and adebrelimab, in combination with chemotherapy for extensive-stage small cell lung ...
Lidan Yi, Zhen Zhou, Xiaohui Zeng, Chongqing Tan, Qiao Liu   +4 more
doaj   +1 more source

Imaging an intrapulmonary solitary fibrous tumor with CT and F-18 FDG PET/CT

Radiology Case Reports, 2019
Intrapulmonary solitary fibrous tumors (SFTs) are extremely rare neoplasms. We report a case of an intrapulmonary SFT and describe the findings of computed tomography (CT) and F-18 fluorodeoxyglucose positron emission tomography.
Takayoshi Shinya, MD, PhD, Yoshihisa Masaoka, MD, PhD, Motohiro Sando, MD, Shin Tanabe, MD, Soichiro Okamoto, MD, Hiroki Ihara, MD, PhD, Takehiro Tanaka, MD, PhD, Shinji Otani, MD, PhD, Takao Hiraki, MD, PhD, Susumu Kanazawa, MD, PhD   +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

Development of a synthetic phantom for the selection of optimal scanning parameters in CAD-CT colonography [PDF]

, 2006
The aim of this paper is to present the development of a synthetic phantom that can be used for the selection of optimal scanning parameters in computed tomography (CT) colonography. In this paper we attempt to evaluate the influence of the main scanning
Shane Foley, Chowdhury, Tarik A., Ovidiu Ghita, Foley, Shane J., Paul F. Whelan, Nicolas Sezille, Ghita, Ovidiu, Sezille, Ncolas, Sezille, Nicolas, Tarik A. Chowdhury, Foley, Shane, Whelan, Paul F.   +11 more
core   +2 more sources