scholarly journals Comparison of lung T 2 * during free-breathing at 1.5 T and 3.0 T with ultrashort echo time imaging

2011 ◽  
Vol 66 (1) ◽  
pp. 248-254 ◽  
Author(s):  
Jiangsheng Yu ◽  
Yiqun Xue ◽  
Hee Kwon Song
Keyword(s):  
Free Breathing ◽  
Ultrashort Echo Time ◽  
3.0 T ◽  
Echo Time

scholarly journals High-resolution ultrashort echo time (UTE) imaging on human knee with AWSOS sequence at 3.0 T

2011 ◽  
Vol 35 (1) ◽  
pp. 204-210 ◽  
Author(s):  
Yongxian Qian ◽  
Ashley A. Williams ◽  
Constance R. Chu ◽  
Fernando E. Boada
Keyword(s):  
High Resolution ◽  
Ultrashort Echo Time ◽  
Human Knee ◽  
3.0 T ◽  
Echo Time

scholarly journals Evaluation of optimized breath-hold and free-breathing 3D ultrashort echo time contrast agent-free MRI of the human lung

2015 ◽  
Vol 43 (5) ◽  
pp. 1230-1238 ◽  
Author(s):  
Neville D. Gai ◽  
Ashkan Malayeri ◽  
Harsh Agarwal ◽  
Robert Evers ◽  
David Bluemke
Keyword(s):  
Contrast Agent ◽  
Human Lung ◽  
Free Breathing ◽  
Breath Hold ◽  
Ultrashort Echo Time ◽  
Echo Time

scholarly journals Free-breathing pediatric chest MRI: Performance of self-navigated golden-angle ordered conical ultrashort echo time acquisition

2017 ◽  
Vol 47 (1) ◽  
pp. 200-209 ◽  
Author(s):  
Evan J. Zucker ◽  
Joseph Y. Cheng ◽  
Anshul Haldipur ◽  
Michael Carl ◽  
Shreyas S. Vasanawala
Keyword(s):  
Free Breathing ◽  
Ultrashort Echo Time ◽  
Golden Angle ◽  
Pediatric Chest ◽  
Echo Time ◽  
Time Acquisition

scholarly journals Accelerated Stack-of-Spirals Free-Breathing Three-Dimensional Ultrashort Echo Time Lung Magnetic Resonance Imaging: A Feasibility Study in Patients With Breast Cancer

2021 ◽  
Vol 11 ◽  
Author(s):  
Min Jae Cha ◽  
Hye Shin Ahn ◽  
Hyewon Choi ◽  
Hyun Jeong Park ◽  
Thomas Benkert ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Image Quality ◽  
Parallel Imaging ◽  
Three Dimensional ◽  
Free Breathing ◽  
Resonance Imaging ◽  
Ultrashort Echo Time ◽  
Echo Time

PurposeTo investigate the clinical feasibility of accelerated free-breathing stack-of-spirals (spiral) three-dimensional (3D) ultrashort echo time (UTE) lung magnetic resonance imaging (MRI) using iterative self‐consistent parallel imaging reconstruction from arbitrary k‐space (SPIRiT) algorithm in patients with breast cancer.MethodsThe institutional review board approved this prospective study and patients’ informed consents were obtained. Between June and August 2018, 29 female patients with breast cancer underwent 3-T MRI including accelerated free-breathing spiral 3D UTE (0.98-mm isotropic spatial resolution; echo time, 0.05 msec) of the lungs and thin-section chest computed tomography (CT). Two radiologists evaluated the image quality and pulmonary nodules on MRI were assessed and compared, CT as a reference.ResultsThe pulmonary vessels and bronchi were visible consistently up to the sub-sub-segmental and sub-segmental branch levels, respectively, on accelerated spiral 3D UTE. The overall image quality was evaluated as good and excellent for 70.7% of accelerated spiral 3D UTE images (reviewer [R]1, 72.4% [21/29]; R2, 69.0% [20/29]) and acceptable for 20.7% (both R1 and R2, 20.7% [6/29]). Five patients on CT revealed 141 pulmonary metastatic nodules (5.3 ± 2.6 mm); the overall nodule detection rate of accelerated spiral 3D UTE was sensitivity of 90.8% (128/141), accuracy of 87.7%, and positive predictive value of 96.2%. In the Bland-Altman plot analysis comparing nodule size between CT and MRI, 132/141 nodules (93.6%) were inside the limits of agreement.ConclusionAccelerated free-breathing spiral 3D UTE using the SPIRiT algorithm could be a potential alternative to CT for oncology patients.

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