The largest database of trusted experimental protocols

16 channel neurovascular coil

Manufactured by Philips
Sourced in Netherlands

The 16-channel neurovascular coil is a specialized radio frequency (RF) coil designed for use with Philips medical imaging equipment. This coil is used to acquire high-quality images of the brain and associated vascular structures. The 16 individual channels provide improved signal-to-noise ratio and enable parallel imaging techniques to enhance image resolution and acquisition speed.

Automatically generated - may contain errors

9 protocols using 16 channel neurovascular coil

1

High-resolution 3D T1-weighted Cervical Cord Imaging

Check if the same lab product or an alternative is used in the 5 most similar protocols
Imaging was performed using a 3 T Philips Achieva MRI system with RF dual-transmit technology (Philips Medical Systems, Best, Netherlands) and the manufacturer's product 16-channel neurovascular coil.
The whole cervical cord was imaged using a magnetization-prepared 3D T1-weighted acquisition (with isotropic voxel size of 1 mm3) in the sagittal plane with FOV = 256 × 256 mm2, matrix size = 256 × 256, TR = 8 ms, TE = 3.7 ms, TI = 860 ms (using linear k-space profile order), SENSE = 2 in the anterior–posterior direction and TFE factor of 205; the scan time for the acquisition was 6:30 min.
+ Open protocol
+ Expand
2

Dynamic MRI Swallowing Protocol

Check if the same lab product or an alternative is used in the 5 most similar protocols
Within a week following the laryngoscopic exam, two-planar dynamic MRI scans were acquired from subjects during a repeated swallows task and EPG. A 3 Tesla Philips Achieva MRI scanner with 16-channel neurovascular coil was used to acquire a block of 10-mm slice images (sagittal alternating with coronal) from above the hard palate to below the cricoid cartilage at rest at 4.3 frames per second]fps] using a T1-weighted fast gradient echo sequence, with TE/ TR = 0.9/2.4 ms. A lower frame rate was chosen to ensure high-quality anatomic images for biomechanical analysis. Faster frame rates provide better temporal data, whereas lower frame rates provide better spatial data. To compensate for this trade-off, a sequential swallowing task was chosen to capture the dynamic range of movement in swallowing. Because MRI cannot capture all frames in one swallow, the swallows were repeated, or they were sequential, meaning a series of swallows were performed and analyzed. Subjects were provided with a visual image of PowerPoint slides guiding subjects through the protocol. Each acquisition included an “at rest” phase followed by either 10 sequential swallows or three EPGs. To facilitate the sequential swallows task, a magnesium-infused bolus, serving as a contrast for T1-weighted sequences, was delivered through a tube connected to a container of liquid.
+ Open protocol
+ Expand
3

MRI Imaging of Primary Tumor

Check if the same lab product or an alternative is used in the 5 most similar protocols
All MR imaging was performed using a 3.0 Tesla unit (Achieva TX; Philips Healthcare, Best, Netherlands) with a 16-channel neurovascular coil. The DWI acquisition of IVIM and DKI data used single-shot spin-echo echo-planar imaging (EPI) with three orthogonal motion probing gradients. Twelve b-values (0, 10, 20, 30, 50, 80, 100, 200, 400, 800, 1000, and 2000 s/mm 2 ) were used. The other imaging parameters were: TR, 4500 ms; TE, 64 ms; DELTA (large delta; gradient time interval), 30.1 ms; delta (small delta; gradient duration), 24.3 ms; flip angle, 90°; FOV, 230×230 mm; 64×64 matrix; slice thickness, 5 mm×20 slices; voxel size 3.59×3.59×5.00 mm; parallel imaging acceleration factor, 2; numbers of signal averages, b-value of 0-100 s/mm 2 (one average), 200-800 s/mm 2 (two averages) and 1000-2000 s/mm 2 (three averages); scanning time, 4 min 37 s.
Conventional MR images were also obtained to evaluate the primary tumor. These images included (a) axial T1-weighted image (T1WI) with a spin-echo sequence (TR, 450 ms; TE, 10 ms; FOV, 240×240 mm; 512×512 matrix; slice thickness, 5 mm; inter-slice gap, 30%; scanning time, 2 min 12 s), and (b) axial T2-weighted image (T2WI) with a turbo spin-echo (TSE) sequence with fat suppression (TR, 4500 ms; TE, 70 ms; TSE factor, 9; FOV, 240×240 mm; 512×512 matrix; slice thickness, 5 mm; inter-slice gap, 30%; scanning time, 2 min 06 s).
+ Open protocol
+ Expand
4

Real-Time MRI Analysis of Speech Production

Check if the same lab product or an alternative is used in the 5 most similar protocols
Five real-time MRI (rtMRI) datasets were used in this work. Each dataset consisted of a series of 2D rtMR images of a subject counting from one to ten in English (Fig. 2A). The datasets were acquired using a 3.0T TX Achieva MRI scanner and a 16-channel neurovascular coil (both Philips Healthcare, Best, the Netherlands) and a fast low-angle shot pulse sequence at a frame rate of 10 frames per second. The rtMR images are of a 300×230×10mm3 midsagittal slice of the head and have a matrix size of 256×256. The subjects (2 females, 3 males; age range: 24 – 28 years) were fluent English speakers and had no recent history of speech and language disorders. The speech task performed by the subjects (counting from one to ten) is a commonly performed one in clinical assessment of speech in the United Kingdom [30] . The datasets consisted of 105, 71, 71, 78 and 67 images (392 images in total). Each dataset was normalised with respect to the minimum and maximum intensities in the set so that all intensities were between 0 and 1.

Example magnetic resonance (MR) images and corresponding ground truth segmentations. (A) Five consecutive MR images of a single subject saying the word “one”. (B) Ground truth segmentations of the head (dark blue), soft palate (light blue), jaw (green), tongue (yellow), vocal tract (pink) and tooth space (red).

Figure 2:
+ Open protocol
+ Expand
5

Supraclavicular Fat-Water MRI Imaging Protocol

Check if the same lab product or an alternative is used in the 5 most similar protocols
MRI data were acquired using a Philips Achieva 3T scanner equipped with a 16-channel neurovascular coil (Philips Healthcare, Best, The Netherlands) (Fig. 1). Three plane localizers and high-resolution T2-weighted images were obtained of the neck and upper torso to assist in planning fat-water MRI scans of the supraclavicular region. The fat-water MRI sequence, summarized in Table 1, was performed at thermoneutral (acquisition 1) and between 20 to 28 times per participant during cold exposure. Image analyses were completed offline using custom scripts written in MATLAB (Mathworks, Natick, MA).

Fat-Water Magnetic Resonance Imaging Sequence Parameters.

Imaging ParameterValue
Pulse Sequence3D multiple fast field echo
Coil16-channel neurovascular receive coil
OrientationAxial
Number of Slices15
Axial In-Plane Field of View530 × 200 mm
Acquired Voxel Size1.25 × 1.25 × 4.00 mm
Acquisition Time115.7 s
Repetition Time17 ms
Number of Echoes18 (3 × 6 interleaved sets)
First Echo Time1.395 ms
Effective Echo Time0.737 ms
Flip Angle
Water-Fat Shift0.505 pixels

No contrast agents were used. Data were acquired under normal breathing conditions. Preparation phases for each scan included first order linear B0 shimming and center frequency optimization.

+ Open protocol
+ Expand
6

Diffusion-Weighted Imaging Protocol for 3T MRI

Check if the same lab product or an alternative is used in the 5 most similar protocols
All MR imaging was performed using a 3.0 Tesla unit (Achieva TX; Philips Healthcare, Best, Netherlands) with a 16-channel neurovascular coil. The DWI acquisition used single-shot spin-echo echo-planar imaging (EPI) with three orthogonal motion probing gradients. Twelve b-values (0, 10, 20, 30, 50, 80, 100, 200, 400, 800, 1000, and 2000 s/mm 2 ) were used. Diffusion images were acquired with a three-directional trace scheme for each b-value. The other imaging parameters were: TR, 4500 ms; TE, 64 ms; DELTA (large delta; gradient time interval), 30.1 ms; delta (small delta; gradient duration), 24.3 ms; flip angle, 90°; field of view (FOV), 230×230 mm; 64×64 matrix; slice thickness, 5 mm×20 slices; voxel size 3.59×3.59×5.00 mm; parallel imaging acceleration factor, 2; the number of signal averages = b-value of 0-100 s/mm 2 (one average), 200-800 s/mm 2 (two averages) and 1000-2000 s/mm 2 (three averages); scanning time, 4 min 37 s.
+ Open protocol
+ Expand
7

Multiparametric MRI Protocol for Brain Tumour Evaluation

Check if the same lab product or an alternative is used in the 5 most similar protocols
All MR imaging was performed using a 3.0 Tesla unit (Achieva TX; Philips Healthcare, Best, Netherlands) with a 16-channel neurovascular coil. The DWI acquisition used single-shot spin-echo echo-planar imaging (EPI) with three orthogonal motion probing gradients. Eleven b-values (0, 10, 20, 30, 50, 80, 100, 200, 400, 800 and 1000 s/mm 2 ) were used. The other imaging parameters were: TR, 4500 ms; TE, 64 ms; DELTA (large delta; gradient time interval), 30.1 ms; delta (small delta; gradient duration), 24.3 ms; flip angle, 90°; field of view (FOV), 230×230 mm; 64×64 matrix; slice thickness, 5 mm×20 slices; voxel size 3.59×3.59×5.00 mm; parallel imaging acceleration factor, 2; the number of signal averages = b-value of 0-100 s/mm 2 (one average), 200-800 s/mm 2 (two averages) and 1000 s/mm 2 (three averages); scanning time, 4 min 02 s.
Conventional MR images were also obtained to evaluate the primary tumour.
These images included (a) axial T1-weighted image (T1WI) with a spin-echo sequence (TR, 450 ms; TE, 10 ms; FOV, 240×240 mm; 512×512 matrix; slice thickness, 5 mm; inter-slice gap, 30%; scanning time, 2 min 12 s), and (b) axial T2-weighted image (T2WI) with a turbo spin-echo (TSE) sequence with fat suppression (TR, 4500 ms; TE, 70 ms; TSE factor, 9; FOV, 240×240 mm; 512×512 matrix; slice thickness, 5 mm; inter-slice gap, 30%; scanning time, 2 min 06 s).
+ Open protocol
+ Expand
8

Spinal Cord and Brain Imaging Protocol

Check if the same lab product or an alternative is used in the 5 most similar protocols
All subjects were scanned at 3T using a Philips Achieva MRI system at baseline and at 1-year follow-up, using the manufacturer's 16 -channel neurovascular coil (Philips Healthcare Systems, Best, Netherlands). The cervical cord was imaged in the axial plane, perpendicular to the longitudinal axis of the cord, to measure the mean spinal cord cross sectional area (SC-CSA). The imaging volume was centred on the C2/3 intervertebral disc, using a fatsuppressed 3D slab-selective fast field echo (FFE) sequence [TR=23ms; TE=5ms; flip angle α 7º; FOV=240x180mm 2 ; voxel size=0.5x0.5x5 mm 3 ; NEX=8; 11 axial contiguous slices].
For calculation of brain volumes, a 3D T1-weighted magnetisation-prepared gradient-echo sequence was used [TR=6.9ms; TE=3.1ms; TI=824ms; flip angle α 8°; FOV= 256x256mm 2 ; voxel size=1x1x1mm 3 ; NEX=1; 180 sagittal contiguous slices].
For calculation of brain T2 lesion volumes, PD/T2 weighted images were acquired using a dual-echo TSE sequence [TR=3500ms; TE=15/85ms; flip angle α 90°; FOV=240x180mm 2 ; voxel size=1x1x3mm 3 ; NEX=1; 50 axial contiguous slices].
+ Open protocol
+ Expand
9

Spinal Cord DTI Imaging Protocol

Check if the same lab product or an alternative is used in the 5 most similar protocols
A 3-T MR scanner (Philips Achieva, Philips Medical System, Eindhoven, The Netherlands) equipped with a 16-channel neurovascular coil was used to perform all examinations from 2010 to 2013. The protocol included conventional sequences to evaluate the spine and spinal cord morphology including T1 and T2. DTI data were acquired by using SE-type Single-Shot EPI sequences. The following scanning parameters were used: TE, 69 ms; TR, 9,079 ms; number of slices, 30; interslice gap, 0 mm; band width, 1,711.8 Hz/pixel; voxel size, 1.79×1.42×4.00 mm; acquisition matrix, 112×140; and number of excitation, 4. Images were acquired with b values of 0 and 700 s/mm2. The DTI parameters, ADC and FA, were measured on axial sections of several cervical levels (C1/2-C6/7).
As shown in Fig. 1, both ADC and FA images were taken, and intraspinal ADC and FA values were measured between each vertebra from the C1/2 to C6/7 level using an axial image that gave stable values. Because DTI is incapable of capturing an image of multiple stacks simultaneously, individual slices were generated at the C4/5 level (a preferred site) as a reference (Fig. 1A). The region of interest was identified manually in the spinal axial view but did not involve the spinal edge to achieve stable values (Fig. 1B-E).
+ Open protocol
+ Expand

About PubCompare

Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.

We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.

However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.

Ready to get started?

Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required

Sign up now

Revolutionizing how scientists
search and build protocols!