Optimisasi Field of View (FOV) Terhadap Kualitas Citra Pada T2WI FSE MRI Lumbal Sagital

Background : Field of view (FOV) is one of paramaters in MRI that is possibly adjusted by a radiographer. Many various adjusment of FOV that are using for lumbar MR Imaging. This study is to determine the effect of variations in the value of FOV to the image quality and anatomical information.Methods : This is a quasy experimental research. The study was conducted with 1.5 Tesla MRI. Data were collected from three volunteers with 5 variations of FOV (17cm, 22cm, 27cm, 32cm and 37cm) which is totally 15 images acquired. Images were evaluated according to the objective evaluation of SNR and CNR by a software in the MRI machine. Quntitative measurements of SNR were conducted on corpus vertebrae, discus intervertebralis, medulla spinalis, cerebrospinal fluid (CSF) and ligamentum flavum respectively. While CNR measurements were on CSF-corpus vertebra, CSF-discus intervertebralis, CSF-medulla spinalis, medulla spinalis-corpus vertebra, medulla spinalis-discus intervertebralis and corpus vertebra-discus intervertebralis. For conspicuity, overall image contrast and artifacts were evaluated qualitatively by three radiologists scoring on the paper sheet based on the image of corpus vertebrae, discus intervertebralis, medulla spinalis, cerebrospinal fluid, ligamentum flavum. Quantitative data of SNR and CNR value were analyzed using Linier Regression and Correlation Spearman test. While radiologists scoring were analyzed using Friedman test and cross tabulation.Results : The results showed that FOV variations affect the image qualities of T2WI FSE sagital lumbar MR Imaging. FOV variations are significantly corelate to the SNR of corpus vertebra, discus intervertebralis, medulla spinalis, CSF and ligamentum flavum. FOV variations are also significantly correlate to the CNR value of CSF-corpus vertebra, CSF-discus intervertebralis, CSF-medulla spinalis, medulla spinalis-corpus vertebra and medulla spinalis-discus intervertebralis (p values 0,05) with positive correlation. But there is no correlation between FOV variations and CNR at the corpus vertebra-discus intervertebralis (p values = 0,109).Conclusion : Based on these results indicate that overall image and artifacts are relatively similar for all value of FOV variations. Optimal values of FOV for T2WI FSE sagittal lumbar MR Imaging is a FOV of 27 cm.

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Coronal STIR sequence, a simple adjustment to routine MRI protocol for extra-spinal sciatica and sciatica-like symptoms

Egyptian Journal of Radiology and Nuclear Medicine ◽

10.1186/s43055-019-0096-6 ◽

2019 ◽

Vol 50 (1) ◽

Author(s):

Rania Zeitoun ◽

Mohammed Saleh Ali Mohieddin

Keyword(s):

Young Adults ◽

Soft Tissue ◽

Mr Imaging ◽

Age Groups ◽

Field Of View ◽

Mri Protocol ◽

Stir Sequence ◽

Tissue Abnormalities ◽

Additional Value ◽

Bone Abnormalities

Abstract Background The value of adding coronal STIR images to MR imaging of sciatica aiming to detect extra-spinal abnormalities. Results Additional coronal STIR images detected extra-spinal abnormalities in 20% of the patients, thereby downgraded the normal studies from 21 to 13%. The extra-spinal abnormalities included bone abnormalities (36.4%), soft tissue abnormalities (4.5%), neurological abnormalities (2.3%), gynecological abnormalities (50%), and miscellaneous (6.8%). In 6.9% of patients, the extra-spinal abnormalities explained the patients’ pain and influenced their management. Extra-spinal causes of pain significantly correlated to positive trauma and neoplasm history, normal routine protocol images, and absent nerve root impingement. Extra-spinal abnormalities were more prevalent in age groups (20–39 years). Conclusion Coronal STIR images (field of view: mid abdomen to the lesser trochanters) identify extra-spinal abnormalities that maybe overlooked on routine MRI protocol. It is of additional value in young adults, trauma, neoplasm, and negative routine images.

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Fast whole brain MR imaging of dynamic susceptibility contrast changes in the cerebrospinal fluid (cDSC MRI)

Magnetic Resonance in Medicine ◽

10.1002/mrm.28389 ◽

2020 ◽

Vol 84 (6) ◽

pp. 3256-3270 ◽

Cited By ~ 1

Author(s):

Di Cao ◽

Ningdong Kang ◽

Jay J. Pillai ◽

Xinyuan Miao ◽

Adrian Paez ◽

...

Keyword(s):

Cerebrospinal Fluid ◽

Mr Imaging ◽

Dynamic Susceptibility ◽

Dynamic Susceptibility Contrast ◽

Whole Brain ◽

Susceptibility Contrast

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Experimental intracerebral and subarachnoid/intraventricular haemorrhages: MR detectability at 0.5 T and 1.5 T

Acta Radiologica ◽

10.1258/rsmacta.43.5.464 ◽

2002 ◽

Vol 43 (5) ◽

pp. 464-473

Author(s):

M. Alemany Ripoll ◽

R. Raininko

Keyword(s):

Cerebrospinal Fluid ◽

Mr Imaging ◽

Spin Echo ◽

Autologous Blood ◽

Pulse Sequences ◽

Proton Density ◽

Gradient Echo ◽

The Brain ◽

Formalin Fixed

Purpose: To compare the detectability of small experimental intracranial haemorrhages on MR imaging at 0.5 T and 1.5 T, from hyperacute to subacute stages. Material and Methods: 1 ml of autologous blood was injected into the brain of 15 rabbits to create intraparenchymal haematomas. Since the blood partially escaped into the cerebrospinal fluid (CSF) spaces, detectability of subarachnoid and intraventricular blood was also evaluated. MR imaging at 0.5 T and at 1.5 T was repeated up to 14 days, including T1-, proton density- and T2-weighted (w) spin-echo (SE), FLAIR and T2*-w gradient echo (GE) pulse sequences. The last MR investigation was compared to the formalin-fixed brain sections in 7 animals. Results: The intraparenchymal haematomas were best revealed with T2*-w GE sequences, with 100% of sensitivity at 1.5 T and 90–95% at 0.5 T. Blood in the CSF spaces was significantly ( p < 0.05) better detected at 1.5 T with T2*-w GE sequences and detected best during the first 2 days. The next most sensitive sequence for intracranial blood was FLAIR. SE sequences were rather insensitive. Conclusion: 1.5 T equipment is superior to 0.5 T in the detection of intracranial haemorrhages from acute to subacute stages. T2*-w GE sequences account for this result but other sequences are also needed for a complete examination.

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Gradient moment nulling for steady-state free precession MR imaging of cerebrospinal fluid

Medical Physics ◽

10.1118/1.596739 ◽

1991 ◽

Vol 18 (5) ◽

pp. 1038-1044 ◽

Cited By ~ 12

Author(s):

Michael L. Wood ◽

Yuval Zur ◽

Leo J. Neuringer

Keyword(s):

Cerebrospinal Fluid ◽

Steady State ◽

Mr Imaging ◽

Steady State Free Precession ◽

Free Precession

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Cerebrospinal Fluid Shunts: Flow measurements with MR imaging

Annual Review of Hydrocephalus ◽

10.1007/978-3-662-11158-1_42 ◽

1991 ◽

pp. 71-72

Author(s):

Alastair J. Martin ◽

James M. Drake ◽

Claude Lemaire ◽

R. Mark Henkelman

Keyword(s):

Cerebrospinal Fluid ◽

Mr Imaging ◽

Cerebrospinal Fluid Shunts ◽

Flow Measurements

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Normal flow patterns of intracranial and spinal cerebrospinal fluid defined with phase-contrast cine MR imaging.

Radiology ◽

10.1148/radiology.178.2.1987610 ◽

1991 ◽

Vol 178 (2) ◽

pp. 467-474 ◽

Cited By ~ 229

Author(s):

D R Enzmann ◽

N J Pelc

Keyword(s):

Cerebrospinal Fluid ◽

Mr Imaging ◽

Phase Contrast ◽

Flow Patterns ◽

Normal Flow ◽

Cine Mr

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Temporal and spatial assessment of normal cerebrospinal fluid dynamics with MR imaging

Magnetic Resonance Imaging ◽

10.1016/0730-725x(93)90238-9 ◽

1993 ◽

Vol 11 (8) ◽

pp. 1107-1118 ◽

Cited By ~ 73

Author(s):

M.C. Henry-Feugeas ◽

I. Idy-Peretti ◽

B. Blanchet ◽

D. Hassine ◽

G. Zannoli ◽

...

Keyword(s):

Fluid Dynamics ◽

Cerebrospinal Fluid ◽

Mr Imaging ◽

Cerebrospinal Fluid Dynamics ◽

Spatial Assessment ◽

Temporal And Spatial

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Normal-pressure hydrocephalus: evaluation with cerebrospinal fluid flow measurements at MR imaging.

Radiology ◽

10.1148/radiology.198.2.8596861 ◽

1996 ◽

Vol 198 (2) ◽

pp. 523-529 ◽

Cited By ~ 219

Author(s):

W G Bradley ◽

D Scalzo ◽

J Queralt ◽

W N Nitz ◽

D J Atkinson ◽

...

Keyword(s):

Cerebrospinal Fluid ◽

Fluid Flow ◽

Mr Imaging ◽

Normal Pressure Hydrocephalus ◽

Normal Pressure ◽

Flow Measurements ◽

Cerebrospinal Fluid Flow

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Analysis of aqueductal cerebrospinal fluid flow after endoscopic aqueductoplasty by using cine phase-contrast magnetic resonance imaging

Journal of Neurosurgery ◽

10.3171/jns.2000.93.2.0237 ◽

2000 ◽

Vol 93 (2) ◽

pp. 237-244 ◽

Cited By ~ 82

Author(s):

Henry W. S. Schroeder ◽

Christiane Schweim ◽

Klaus H. Schweim ◽

Michael R. Gaab

Keyword(s):

Cerebrospinal Fluid ◽

Magnetic Resonance ◽

Mr Imaging ◽

Healthy Volunteers ◽

Phase Contrast ◽

Aqueductal Stenosis ◽

Csf Flow ◽

Content Type ◽

Endoscopic Aqueductoplasty ◽

Fine Print

Object. The purpose of this prospective study was to evaluate aqueductal cerebrospinal fluid (CSF) flow after endoscopic aqueductoplasty. In all patients, preoperative magnetic resonance (MR) imaging revealed hydrocephalus caused by aqueductal stenosis and lack of aqueductal CSF flow.Methods. In 14 healthy volunteers and in eight patients with aqueductal stenosis who had undergone endoscopic aqueductoplasty, aqueductal CSF flow was investigated using cine cardiac-gated phase-contrast MR imaging. For qualitative evaluation of CSF flow, the authors used an in-plane phase-contrast sequence in the midsagittal plane. The MR images were displayed in a closed-loop cine format. Quantitative through-plane measurements were performed in the axial plane perpendicular to the aqueduct. Evaluation revealed no significant difference in aqueductal CSF flow between healthy volunteers and patients with regard to temporal parameters, CSF peak and mean velocities, mean flow, and stroke volume. All restored aqueducts have remained patent 7 to 31 months after surgery.Conclusions. Aqueductal CSF flow after endoscopic aqueductoplasty is similar to aqueductal CSF flow in healthy volunteers. The data indicate that endoscopic aqueductoplasty seems to restore physiological aqueductal CSF flow.

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