scholarly journals Efficacy of Maximum Intensity Projection of Contrast-Enhanced 3D Turbo-Spin Echo Imaging with Improved Motion-Sensitized Driven-Equilibrium Preparation in the Detection of Brain Metastases

2017 ◽  
Vol 18 (4) ◽  
pp. 699 ◽  
Author(s):  
Yun Jung Bae ◽  
Byung Se Choi ◽  
Kyung Mi Lee ◽  
Yeon Hong Yoon ◽  
Leonard Sunwoo ◽  
...  
2014 ◽  
Vol 4 (1) ◽  
pp. 40-44
Author(s):  
Fuad Julardžija ◽  
Adnan Šehić ◽  
Damir Jaganjac ◽  
Esad Voloder ◽  
Srećko Mađura ◽  
...  

Introduction: Magnetic resonance cholangiopancreatography (MRCP) is a method that allows noninvasive visualization of pancreatobiliary tree and does not require contrast application. It is a modern method based on heavily T2-weighted imaging (hydrography), which uses bile and pancreatic secretions as a natural contrast medium. Certain weaknesses in quality of demonstration of pancreatobiliary tract can be observed in addition to its good characteristics. Our aim was to compare the 3D Maximum intensity projection (MIP) reconstruction and 2D T2 Half-Fourier Acquisition Single-Shot Turbo Spin-Echo (HASTE) sequence in magnetic resonance cholangiopancreatography.Methods: During the period of one year 51 patients underwent MRCP on 3T „Trio“ system. Patients of different sex and age structure were included, both outpatient and hospitalized. 3D MIP reconstruction and 2D T2 haste sequence were used according to standard scanning protocols.Results: There were 45.1% (n= 23) male and 54.9% (n=28) female patients, age range from 17 to 81 years. 2D T2 haste sequence was more susceptible to respiratory artifacts presence in 64% patients, compared to 3D MIP reconstruction with standard error (0.09), result significance indication (p=0.129) and confidence interval (0.46 to 0.81). 2D T2 haste sequences is more sensitive and superior for pancreatic duct demonstration compared to 3D MIP reconstruction with standard error (0.07), result significance indication (p=0.01) and confidence interval (0.59 to 0.87)Conclusion: In order to make qualitative demonstration and analysis of hepatobiliary and pancreatic system on MR, both 2D T2 haste sequence in transversal plane and 3D MIP reconstruction are required.


1997 ◽  
Vol 37 (3) ◽  
pp. 379
Author(s):  
Sung Wook Choi ◽  
Ghi Jai Lee ◽  
Jae Chan Shim ◽  
Young Ju Lee ◽  
Se Hyung Jeong ◽  
...  

Author(s):  
Elisabeth Sartoretti ◽  
Sabine Sartoretti-Schefer ◽  
Luuk van Smoorenburg ◽  
Barbara Eichenberger ◽  
Árpád Schwenk ◽  
...  

Objectives: To compare a novel 3D spiral gradient echo (GRE) sequence with a conventional 2D cartesian turbo spin echo (TSE) sequence for sagittal contrast-enhanced (CE) fat-suppressed (FS) T1 weighted (T1W) spine MRI. Methods: In this inter-individual comparison study, 128 patients prospectively underwent sagittal CE FS T1W spine MRI with either a 2D cartesian TSE (“TSE”, 285 s, 64 patients) or a 3D spiral GRE sequence (“Spiral”, 93 s, 64 patients). Between both groups, patients were matched in terms of anatomical region (cervical/thoracic/lumbar spine and sacrum). Three readers used 4-point Likert scales to assess images qualitatively in terms of overall image quality, presence of artifacts, spinal cord visualization, lesion conspicuity and quality of fat suppression. Results: Spiral achieved a 67.4% scan time reduction compared to TSE. Interreader agreement was high (alpha=0.868-1). Overall image quality (4;[3,4] vs 3;[3,4], p<0.001 – p=0.002 for all readers), presence of artifacts (4;[3,4] vs 3;[3,4] p=0.027 – p=0.046 for all readers), spinal cord visualization (4;[4,4] vs 4;[3,4], p<0.001 for all readers), lesion conspicuity (4;[4,4] vs 4;[4,4], p=0.016 for all readers) and quality of fat suppression (4;[4,4] vs 4;[4,4], p=0.027 – p=0.033 for all readers), were all deemed significantly improved by all three readers on Spiral images as compared to TSE images Conclusion: We demonstrate the feasibility of a novel 3D spiral GRE sequence for improved and rapid sagittal CE FS T1W spine MRI. Advances in knowledge: A 3D spiral GRE sequence allows for improved sagittal CE FS T1W spine MRI at very short scan times.


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