Results 111 to 120 of about 14,640 (199)

Morphologic Evaluation of Primary Non-Small Cell Lung Cancer by 3 Tesla MRI with Free-Breathing Ultrashort Echo Time and Radial T1- Weighted Gradient Echo Sequences: A Comparison with CT Analysis

대한영상의학회지, 2019
Purpose To evaluate morphologic features of primary non-small cell lung cancer using 3 Tesla MRI with free-breathing compared with CT. Materials and Methods Thirty-six patients were enrolled.
Hyunji Lee, EunHee Choi, Myoung Kyu Lee, Yu Zhang, Woocheol Kwon   +4 more
doaj   +1 more source

Cardiac-respiratory self-gated cine ultra-short echo time (UTE) cardiovascular magnetic resonance for assessment of functional cardiac parameters at high magnetic fields

, 2014
Background: To overcome flow and electrocardiogram-trigger artifacts in cardiovascular magnetic resonance (CMR), we have implemented a cardiac and respiratory self-gated cine ultra-short echo time (UTE) sequence.
Faber, C. (Cornelius), Hörr, V. (Verena), Kuhlmann, M.T. (Michael), Nagelmann, N. (Nina), Nauerth, A. (Arno), Stypmann, J. (Jörg)   +5 more
core   +1 more source

Ultrasound attenuation of cortical bone correlates with biomechanical, microstructural, and compositional properties

European Radiology Experimental
Background We investigated the relationship of two commonly used quantitative ultrasound (QUS) parameters, speed of sound (SoS) and attenuation coefficient (α), with water and macromolecular contents of bovine cortical bone strips as measured with ...
Saeed Jerban, Victor Barrere, Behnam Namiranian, Yuanshan Wu, Salem Alenezi, Erik Dorthe, Darryl Dlima, Sameer B. Shah, Christine B. Chung, Jiang Du, Michael P. Andre, Eric Y. Chang   +11 more
doaj   +1 more source

Accuracy of Ultra-Fast Low-Field MRI (0.55 T) for Lung Nodule Detection with Ultra-Short Echo Time Sequences

Tomography
Lung nodules are a common radiological finding that can be caused by a variety of reasons, ranging from benign granulomas and scarring to the early stages of primary lung malignancies and metastases [...]
Maximilian Hinsen, Armin Michael Nagel, Nadine Bayerl, Hans-Peter Fautz, Thomas Benkert, Matthias Stefan May, Michael Uder, Rafael Heiss   +7 more
doaj   +1 more source

Quantitative Assessment of Regional Dynamic Airway Collapse in Neonates via Retrospectively Respiratory‐Gated 1H Ultrashort Echo Time MRI

Journal of Magnetic Resonance Imaging, 2018
Neonatal dynamic tracheal collapse (tracheomalacia, TM) is a common and serious comorbidity in infants, particularly those with chronic lung disease of prematurity (bronchopulmonary dysplasia, BPD) or congenital airway or lung‐related conditions such as ...
A. Bates, N. Higano, E. Hysinger, R. Fleck, A. Hahn, S. Fain, P. Kingma, J. Woods   +7 more
semanticscholar   +1 more source

Are Collagen Protons Visible with the Zero Echo Time (ZTE) Magnetic Resonance Imaging Sequence: A D₂O Exchange and Freeze-Drying Study

Bioengineering
It is known that ultrashort echo time (UTE) magnetic resonance imaging (MRI) sequences can detect signals from water protons but not collagen protons in short T2 species such as cortical bone and tendons.
Tan Guo, Dina Moazamian, Arya A. Suprana, Saeed Jerban, Eric Y. Chang, Yajun Ma, Michael Carl, Min Chen, Jiang Du   +8 more
doaj   +1 more source

Abbreviated quantitative UTE imaging in anterior cruciate ligament reconstruction

BMC Musculoskeletal Disorders, 2019
Background Existing ultrashort echo time magnetic resonance imaging (UTE MRI) methods require prohibitively long acquisition times (~ 20–40 min) to quantitatively assess the clinically relevant fast decay T2* component in ligaments and tendons.
Takeshi Fukuda, Kenneth Wengler, Dharmesh Tank, Seth Korbin, James M. Paci, David E. Komatsu, Megan Paulus, Mingqian Huang, Elaine Gould, Mark E. Schweitzer, Xiang He   +10 more
doaj   +1 more source

Ultrashort echo-time MRI versus CT for skull aberration correction in MR-guided transcranial focused ultrasound: In vitro comparison on human calvaria.

Medical Physics (Lancaster), 2015
PURPOSE Transcranial magnetic resonance-guided focused ultrasound (TcMRgFUS) brain treatment systems compensate for skull-induced beam aberrations by adjusting the phase and amplitude of individual ultrasound transducer elements.
G. W. Miller, M. Eames, J. Snell, J. Aubry   +3 more
semanticscholar   +1 more source

Differentiation of histological calcification classifications in breast cancer using ultrashort echo time and chemical shift-encoded imaging MRI

Frontiers in Oncology
IntroductionDuctal carcinoma in situ (DCIS) accounts for 25% of newly diagnosed breast cancer cases with only 14%–53% developing into invasive ductal carcinoma (IDC), but currently overtreated due to inadequate accuracy of mammography.
Yazan Ayoub, Sai Man Cheung, Boddor Maglan, Nicholas Senn, Kwok-Shing Chan, Kwok-Shing Chan, Jiabao He   +6 more
doaj   +1 more source

Unveiling tracheo-oesophageal fistula: The crucial role of imaging in the diagnosis and management

South African Journal of Radiology
Tracheo-oesophageal fistula (TOF) is a significant congenital anomaly characterised by an abnormal communication between the trachea and the oesophagus.
Poonam Sherwani, Nivedita Sharma, Rajat Piplani, Ekakshi Varshney, Sumit Kumar   +4 more
doaj   +1 more source