scholarly journals Developing a Specific MRI Technology to Identify Complications Caused by Breast Implants

2021 ◽  
Vol 11 (8) ◽  
pp. 3434
Author(s):  
Ming-Fang Lin ◽  
Lu-Han Lai ◽  
Wen-Tien Hsiao ◽  
Melissa Min-Szu Yao ◽  
Wing-P Chan
Keyword(s):  
Water Saturation ◽  
Spin Echo ◽  
Pulse Sequences ◽  
Breast Implants ◽  
Fast Spin Echo ◽  
Silicone Implants ◽  
Water Suppression ◽  
Dynamic Contrast Enhancement ◽  
Produce Water ◽  
Fat Saturation

With advancements in aesthetic medicine, breast augmentation has become a popular plastic surgery worldwide, typically performed using either fine-needle injection or silicone implants. Both carry complication risks from rupture over time. In this study, we aimed to reduce misjudgments and increase diagnostic value by developing an MRI technique that can produce water- and silicone-specific images from MRI scans of phantoms (Natrelle® saline-filled breast implants) and human bodies. Pig oil, soybean oil, and normal saline were used to simulate human breast tissue, and two common types of breast implants, saline bags, and silicone bags, were selected as well, resulting in five materials scanned. Six pulse sequences were applied: T1W fast spin echo (FSE), T1W SPGR/60, T2W, T2W fat-saturation, STIR, and STIR water-saturation. Human body scans were additionally investigated using 3D SPGR fat-saturation dynamic contrast enhancement. Results show that the best way to enhance tissue contrast in images of silicone implants is to apply STIR combined with water suppression, and the best way to enhance saline bag implants is to apply T2W fat-saturation combined with fat suppression. Both offered very high sensitivity and specificity, rendering this method especially useful for distinguishing normal mammary glands from siliconoma.

5281916 NMR angiography using fast spin echo pulse sequences

1995 ◽  
Vol 13 (1) ◽  
pp. IX
Author(s):  
Richard S Hinks ◽  
Matthew Bernstein
Keyword(s):  
Spin Echo ◽  
Pulse Sequences ◽  
Fast Spin Echo ◽  
Echo Pulse ◽  
Fast Spin

Comparison of breath-hold fast spin-echo and conventional spin-echo pulse sequences for T2-weighted MR imaging of liver lesions.

Radiology ◽  
1995 ◽  
Vol 194 (2) ◽  
pp. 431-437 ◽  
Author(s):  
J N Rydberg ◽  
D J Lomas ◽  
K J Coakley ◽  
D M Hough ◽  
R L Ehman ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Spin Echo ◽  
Pulse Sequences ◽  
Fast Spin Echo ◽  
Breath Hold ◽  
Liver Lesions ◽  
Echo Pulse ◽  
Conventional Spin Echo ◽  
Fast Spin

Superparamagnetic Iron Oxide Hepatic MR Imaging: Efficacy and Safety Using Conventional and Fast Spin-Echo Pulse Sequences

1995 ◽  
Vol 5 (5) ◽  
pp. 566-570 ◽  
Author(s):  
Lawrence H. Schwartz ◽  
Steven E. Seltzer ◽  
Clare M. C. Tempany ◽  
Stuart G. Silverman ◽  
David R. Piwnica-Worms ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Mr Imaging ◽  
Spin Echo ◽  
Pulse Sequences ◽  
Superparamagnetic Iron Oxide ◽  
Fast Spin Echo ◽  
Efficacy And Safety ◽  
Echo Pulse ◽  
Fast Spin

Rapid Lumbar Spine MR Myelography: Imaging Findings Using a Single-Shot Technique

1997 ◽  
Vol 10 (2) ◽  
pp. 181-187 ◽  
Author(s):  
P. Demaerel ◽  
P. Van Hover ◽  
A. Broeders ◽  
B. Kiefer ◽  
A.L. Baert
Keyword(s):  
Spin Echo ◽  
Pulse Sequences ◽  
Three Dimensional ◽  
Projection Algorithm ◽  
Fast Spin Echo ◽  
Single Shot ◽  
Rapid Acquisition ◽  
Spin Echo Sequence ◽  
Echo Pulse ◽  
Mr Myelography

MR myelography has been performed by several authors. Most authors have used techniques based on three-dimensional gradient-echo pulse sequences or fast spin-echo pulse sequences. The examination time varied between 5 and 13 minutes and postprocessing with a maximum-intensity projection algorithm was necessary for three-dimensional visualization. The rapid acquisition with relaxation enhancement (RARE) was initially described by Hennig et Al. In this technical note we present our experience with a single-shot turbo spin-echo sequence, derived from RARE, of approximately 2 seconds to obtain one view. MR myelography can replace conventional myelography in all different types of pathology. In addition MR myelography provides additional information compared to MR imaging in a minority of the cases. Taking into account the ultra-rapid acquisition and the absence of postprocessing procedures, we recommended this technique in the appropriate clinical setting. The MR myelogram increases the level of conficence of the neuroradiologist.

Adjustable shunt valve–induced magnetic resonance imaging artifact: a comparative study

2010 ◽  
Vol 113 (1) ◽  
pp. 74-78 ◽  
Author(s):  
Ahmed K. Toma ◽  
Andrew Tarnaris ◽  
Joan P. Grieve ◽  
Laurence D. Watkins ◽  
Neil D. Kitchen
Keyword(s):  
Mr Imaging ◽  
Pulse Sequence ◽  
Spin Echo ◽  
Pulse Sequences ◽  
Fast Spin Echo ◽  
Mr Images ◽  
Shunt Valve ◽  
Adjustable Valve ◽  
Imaging Artifact

Object In this paper, the authors' goal was to compare the artifact induced by implanted (in vivo) adjustable shunt valves in spin echo, diffusion weighted (DW), and gradient echo MR imaging pulse sequences. Methods The MR images obtained in 8 patients with proGAV and 6 patients with Strata II adjustable shunt valves were assessed for artifact areas in different planes as well as the total volume for different pulse sequences. Results Artifacts induced by the Strata II valve were significantly larger than those induced by proGAV valve in spin echo MR imaging pulse sequence (29,761 vs 2450 mm3 on T2-weighted fast spin echo, p = 0.003) and DW images (100,138 vs 38,955 mm3, p = 0.025). Artifacts were more marked on DW MR images than on spin echo pulse sequencse for both valve types. Conclusions Adjustable valve–induced artifacts can conceal brain pathology on MR images. This should influence the choice of valve implantation site and the type of valve used. The effect of artifacts on DW images should be highlighted pending the development of less MR imaging artifact–inducing adjustable shunt valves.

MR diagnosis of meniscal tears of the knee: value of fast spin-echo vs conventional spin-echo pulse sequences.

1994 ◽  
Vol 162 (5) ◽  
pp. 1131-1135 ◽  
Author(s):  
D A Rubin ◽  
J B Kneeland ◽  
J Listerud ◽  
S J Underberg-Davis ◽  
M K Dalinka
Keyword(s):  
Spin Echo ◽  
Pulse Sequences ◽  
Fast Spin Echo ◽  
Meniscal Tears ◽  
Echo Pulse ◽  
Conventional Spin Echo ◽  
Fast Spin
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