Improving Access to Fast MRI for Emergent Shunt Evaluation

2021 ◽  
Author(s):  
C.M. Pfeifer ◽  
N. Karbhari
Keyword(s):  
Fast Mri

Quantitative Ultra-Fast MRI of HPMC Swelling and Dissolution

2010 ◽  
Vol 99 (8) ◽  
pp. 3462-3472 ◽  
Author(s):  
Ya Ying Chen ◽  
L.P. Hughes ◽  
L.F. Gladden ◽  
M.D. Mantle
Keyword(s):  
Fast Mri

scholarly journals The potential utility of abbreviated breast MRI (FAST MRI) as a tool for breast cancer screening: a systematic review and meta-analysis

2021 ◽  
Vol 76 (2) ◽  
pp. 154.e11-154.e22 ◽  
Author(s):  
R. Geach ◽  
L.I. Jones ◽  
S.A. Harding ◽  
A. Marshall ◽  
S. Taylor-Phillips ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Systematic Review ◽  
Cancer Screening ◽  
Breast Cancer Screening ◽  
Meta Analysis ◽  
Breast Mri ◽  
Potential Utility ◽  
Fast Mri ◽  
Abbreviated Breast Mri

scholarly journals Fast MRI Methods for the Clinical Evaluation of Skeletal Disorders

10.5772/30145 ◽  
2011 ◽  
Author(s):  
Renato Toffanin ◽  
Giuseppe Guglielmi ◽  
Maria A.
Keyword(s):  
Clinical Evaluation ◽  
Fast Mri ◽  
Skeletal Disorders

Population-based prostate cancer screening using a prospective, blinded, paired screen-positive comparison of PSA and fast MRI: The IP1-PROSTAGRAM study.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. 5513-5513 ◽  
Author(s):  
David Eldred-Evans ◽  
Paula Burak ◽  
Martin John Connor ◽  
Emily Day ◽  
Martin Evans ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Cancer Screening ◽  
Prostate Cancer Screening ◽  
Specific Antigen ◽  
Population Based ◽  
Mri Scan ◽  
Serious Adverse Events ◽  
Fast Mri ◽  
Clinically Significant ◽  
Mri Score

5513 Background: The prostate-specific antigen (PSA) test can lead to under- and over-diagnosis of prostate cancer and has not been recommended for population screening. A fast MRI scan might overcome the limitations of PSA. IP1-PROSTAGRAM is the first study to evaluate the performance of a 15-minute non-contrast MRI for prostate cancer screening in comparison to PSA. Methods: IP1-PROSTAGRAM was a prospective, population-based, screen-positive paired-cohort study. Men aged 50-69 years in the UK were invited for prostate cancer screening through seven primary care practices or community-based recruitment. Participants underwent a PSA and MRI scan (T2-weighted and diffusion). MRI was scored using PIRADS version 2.0 without knowledge of PSA; screen-positive MRI (defined as either PIRADS score 3-5 or 4-5) were compared against a screen-positive PSA defined as ≥3ng/ml. If any test was screen-positive, a systematic 12-core biopsy was performed with MRI-ultrasound image-fusion targeted biopsy to MRI suspicious areas, as appropriate. Clinically-significant cancer was defined as any Gleason score ≥3+4. The primary outcome was the proportion of screen-positive MRI at different scores; important secondary outcomes were the number of clinically-significant and insignificant cancers detected. Results: 2034 men were invited to participate of whom 408 consented and 406 were screened by both PSA and MRI (10/Oct/2018-15/May/2019). The proportion with a screen-positive MRI (score 3-5) was higher than the proportion with a screen-positive PSA (17.7% [95%CI 14.3-21.8] vs. 9.9% [95%CI 7.3-13.2]; p < 0.001). A screen-positive MRI (score 4-5) was similar to a screen-positive PSA (10.6% [95%CI 7.9-14.0] vs. 9.9% [95%CI 7.3-13.2], p = 0.71). An MRI score 3-5 or 4-5 used to denote a screen-positive MRI, compared to PSA alone, detected 14, 11 and 7 clinically-significant cancers, respectively. There were 7, 5 and 6 clinically-insignificant cancers detected, respectively. No serious adverse events occurred. Conclusions: When screening the general population for prostate cancer, MRI using a score of 4-5 to define a screen-positive test, compared to PSA alone at ≥3ng/ml, could lead to more men diagnosed with clinically-significant cancer without increasing the number of men biopsied or diagnosed with clinically-insignificant cancer. Clinical trial information: NCT03702439 .

Imaging of Eye Movement with Fast MRI

1997 ◽  
Vol 21 (3) ◽  
pp. 447-451 ◽  
Author(s):  
Lorenz Jäger ◽  
Ullrich Welge-Lüssen ◽  
Ines Lanzl ◽  
Maximilian Reiser
Keyword(s):  
Eye Movement ◽  
Fast Mri

Field-Echo Pulse Sequences Used under Suspended Respiration for Detection of Liver Metastases

1989 ◽  
Vol 30 (3) ◽  
pp. 285-289
Author(s):  
T. Andersson ◽  
R. Nyman ◽  
A. Ericsson ◽  
A. Hemmingsson
Keyword(s):  
Liver Metastases ◽  
Spin Echo ◽  
Pulse Sequences ◽  
Matrix Size ◽  
Fast Mri ◽  
Flash Sequence ◽  
Gastrointestinal Tumours ◽  
Repetition Time ◽  
Echo Pulse ◽  
Spin Echo Sequences

To obtain a fast MRI sequence for detection of liver metastases under suspended respiration, two healthy volunteers were examined with the field echo sequence FLASH, using a large number of repetition times, echo times, flip angles and matrix sizes. The spleen was used to simulate liver metastases and contrast-to-noise ratios between liver and spleen were calculated and the sequence with the highest ratio was considered optimal. The different FLASH sequences were also compared with spin echo sequences using short repetition and echo times. A FLASH sequence with a repetition time of 140 ms, an echo time of 14 ms, a flip angle of 80 to 100 degrees and a matrix size of 128×256 was considered the most suitable for detecting liver metastases. This sequence, together with other FLASH and spin echo sequences, were used for examination of five patients with liver metastases from endocrine gastrointestinal tumours.

Functional imaging of the kidneys with fast MRI techniques

1999 ◽  
Vol 29 (2) ◽  
pp. 133-148 ◽  
Author(s):  
Pottumarthi V Prasad ◽  
Agus Priatna
Keyword(s):  
Functional Imaging ◽  
Fast Mri

Fast MRI-Guided Vacuum-Assisted Breast Biopsy:Initial Experience

2003 ◽  
Vol 181 (5) ◽  
pp. 1283-1293 ◽  
Author(s):  
Laura Liberman ◽  
Elizabeth A. Morris ◽  
D. David Dershaw ◽  
Cynthia M. Thornton ◽  
Kimberly J. Van Zee ◽  
...  
Keyword(s):  
Fast Mri ◽  
Mri Guided
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