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Achieva mr system

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The Achieva MR system is a magnetic resonance imaging (MRI) scanner developed by Philips. It is designed to capture detailed images of the body's internal structures and functions. The Achieva MR system utilizes powerful magnetic fields and radio waves to generate high-quality images, enabling healthcare professionals to diagnose and monitor various medical conditions.

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Lab products found in correlation

8 channel receive only head coil, by Philips (3 mentions) 8 channel sense head coil, by Philips (2 mentions) 32 channel sense head coil, by Philips (2 mentions) Software 3, by Philips (2 mentions) Glucagon, by Eli Lilly (2 mentions) 32 channel head coil, by Philips (2 mentions) Gadovist, by Bayer (1 mentions) Selenia dimension, by Hologic (1 mentions) Power injector, by Bayer (1 mentions) Dotarem, by Guerbet (1 mentions) Cvi42, by Circle Cardiovascular Imaging (1 mentions) Medrad, by Bayer (1 mentions) Matlab, by MathWorks (1 mentions) Medrad ecoil, by Bayer (1 mentions) Isotrack, by Polhemus (1 mentions) 32 channels head coil, by Philips (1 mentions) Quasar dual gradient system, by Philips (1 mentions) Signa mr system, by GE Healthcare (1 mentions)

29 protocols using achieva mr system

1

Cardiac MRI Protocol for Left Atrial Imaging

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All imaging was performed with a 1.5-T Philips Achieva MR system (Philips, the Netherlands) and a 5- or-32 element phased-array cardiac coil using a technique we previously reported (see Supplemental Material for details).8 (link), 9 (link) The workflow is summarized in Figure 1.

Schematic representation of the generation of left atrial (LA) delayed-enhancement magnetic resonance imaging (MRI-DE) models. 2D = 2 dimensional; MRI = magnetic resonance imaging.

Qureshi N.A., Kim S.J., Cantwell C.D., Afonso V.X., Bai W., Ali R.L., Shun-Shin M.J., Malcolme-Lawes L.C., Luther V., Leong K.M., Lim E., Wright I., Nagy S., Hayat S., Ng F.S., Wing M.K., Linton N.W., Lefroy D.C., Whinnett Z.I., Davies D.W., Kanagaratnam P., Peters N.S, & Lim P.B. (2019). Voltage during atrial fibrillation is superior to voltage during sinus rhythm in localizing areas of delayed enhancement on magnetic resonance imaging: An assessment of the posterior left atrium in patients with persistent atrial fibrillation. Heart Rhythm, 16(9), 1357-1367.
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2

Diffusion Tensor Imaging of Preterm and Term Neonates

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Each MRI of preterm and term neonates was acquired with a 3T Philips Achieva MR system (Cleveland) at Children's Medical Center at Dallas with an 8-channel SENSE head coil. The neonates were fed before the MRI scan and wrapped with a vacuum immobilizer to minimize motion. Extra foam padding was applied to reduce the sound of the scanner in addition to the earplugs and the earphones. The DTI imaging parameters were as follows: b-value = 1,000 s/mm2, 30 linearly independent diffusion encoding directions (Jones et al., 1999 (link)), one non-diffusion weighted (b0) image, TE = 78 ms, TR = 6,850 ms, in-plane FOV = 168 × 168 mm2, in-plane imaging resolution = 1.5 × 1.5 mm2, slice thickness = 1.6 mm, and number of slices = 60. The axial DWI image dimension was 256 × 256 after reconstruction. Two repetitions were performed to improve SNR. The total acquisition time was 11 min. DWI volumes that were corrupted due to artifacts or motion were replaced with another DTI repetition during postprocessing.
Song L., Mishra V., Ouyang M., Peng Q., Slinger M., Liu S, & Huang H. (2017). Human Fetal Brain Connectome: Structural Network Development from Middle Fetal Stage to Birth. Frontiers in Neuroscience, 11, 561.
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3

Probabilistic Atlas of Digit Somatotopy

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Functional MRI data were pooled from four studies (Barratt, 2018 ; Granga Espiritu Santo, 2018 ; Sanchez Panchuelo et al., 2016 , Sanchez Panchuelo et al., 2018 (link)) collected between 2015 and 2018 on the same 7 ​T Achieva MR system (Philips Healthcare; Best, Netherlands) using a head volume transmit coil and a 32-channel receive coil (Nova Medical: Wilmington, MA). Experimental procedures for all studies were approved by the University of Nottingham Medical School’s Ethics Committee. All subjects gave written informed consent and subjects had no history of neurological disorders.
To generate the digit probabilistic atlas, only those subjects who had completed somatotopic mapping of both the left and right hand were included. This resulted in the inclusion of data from 22 right handed healthy human subjects (equal biological sex distribution, age 29 ​± ​9 years). In order to assess reproducibility of the somatotopic maps, four of these twenty-two subjects subsequently participated in an additional scan session to generate a second digit somatotopic map for both the left and right hand.
O’Neill G.C., Sengupta A., Asghar M., Barratt E.L., Besle J., Schluppeck D., Francis S.T, & Sanchez Panchuelo R.M. (2020). A probabilistic atlas of finger dominance in the primary somatosensory cortex. Neuroimage, 217, 116880.
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4

Cardiac MRI Assessment of Ventricular Volumes

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CMR scanning was performed with the use of a 3 Tesla Philips Achieva MR system (Philips Healthcare) as described earlier in the literature [16 (link)]. In particular, cine steady state free precession (SSFP), dark blood T2-weighted, and late gadolinium enhancement (LGE) images were acquired. Images were acquired within one month of the patient’s first visit. All CMR studies were analyzed offline using a dedicated software. Quantitative and qualitative data analyses were performed by an expert investigator blinded to clinical and ECG data. The following parameters were measured: left ventricular end diastolic volume, left ventricular end systolic volume, right ventricular end diastolic volume, and right ventricular end systolic volume, all of which were indexed to the body surface area. Left and right ventricular ejection fraction were also assessed.
Pietrzak R., Książczyk T.M., Górska E., Małek Ł.A, & Werner B. (2021). Evaluation of Galectin-3 Plasma Concentration in Adolescents with Ventricular Arrhythmia. International Journal of Environmental Research and Public Health, 18(5), 2410.
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5

High-Field 3T MRI Acquisition Protocol

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All scans were acquired with a 3-Tesla Philips Achieva MR System using a 32-channel SENSE head coil, software 3.2.2 (Philips Medical Systems) and dual Quasar gradients (80mT/m at a slew rate of 110mT/m/s or 40mT/m at a slew rate of 220mT/m/s).
Sewaybricker L.E., Melhorn S.J., Askren M.K., Webb M.F., Tyagi V., De Leon M.R., Grabowski T.J., Seeley W.W, & Schur E.A. (2019). Salience network connectivity is reduced by a meal and influenced by genetic background and hypothalamic gliosis. International journal of obesity (2005), 44(1), 167-177.
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6

High-Field 3T MRI Acquisition Protocol

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All scans were acquired with a 3-Tesla Philips Achieva MR System using a 32-channel SENSE head coil, software 3.2.2 (Philips Medical Systems) and dual Quasar gradients (80mT/m at a slew rate of 110mT/m/s or 40mT/m at a slew rate of 220mT/m/s).
Sewaybricker L.E., Melhorn S.J., Askren M.K., Webb M.F., Tyagi V., De Leon M.R., Grabowski T.J., Seeley W.W, & Schur E.A. (2019). Salience network connectivity is reduced by a meal and influenced by genetic background and hypothalamic gliosis. International journal of obesity (2005), 44(1), 167-177.
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7

Dynamically Interleaved 2D/3D MR Imaging

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A dynamically interleaved 2D/3D dual-sequence scheme was implemented in a dedicated acquisition framework [28 (link)]. All images were acquired on a 1.5 T Philips Achieva MR system (Philips Healthcare, Best, The Netherlands) using a 5-element cardiac receive coil array. Interleaved acquisitions consisted of electrocardiogram (ECG) triggered saturation-recovery spoiled gradient echo sequences using spatiotemporal k-t undersampling. Gadobutrol (Gadovist, Bayer Schering Pharma, Germany) was used as contrast agent (CA).
Wissmann L., Niemann M., Gotschy A., Manka R, & Kozerke S. (2015). Quantitative three-dimensional myocardial perfusion cardiovascular magnetic resonance with accurate two-dimensional arterial input function assessment. Journal of Cardiovascular Magnetic Resonance, 17, 108.
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8

High-Field MRI Brain Imaging Study

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This study was approved by the Medical Research Ethics Committee of University Medical Center Utrecht, and all of the volunteers gave informed consent. All experiments were done according to the guidelines and regulations of the Wet Medisch Wetenschappelijk Onderzoek. Three subjects were scanned on a 7T Achieva MR system (Philips, Best, Netherlands) using a quadrature transmit coil with a 32‐channel receive head coil (NOVA Medical, Houston, Texas, USA).
Khlebnikov V., Siero J.C., Bhogal A.A., Luijten P.R., Klomp D.W, & Hoogduin H. (2017). Establishing upper limits on neuronal activity–evoked pH changes with APT‐CEST MRI at 7 T. Magnetic Resonance in Medicine, 80(1), 126-136.
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9

Multimodal Breast Imaging Comparison

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DBT and FFDM (two-view: craniocaudal and mediolateral oblique) were performed using the same mammography unit (Selenia Dimensions, Hologic) for both breasts in each patient. DBT and FFDM images of each breast were acquired sequentially during single breast compression per view. An automated exposure control was used. The average glandular dose was automatically calculated using the imaging system.
MRI was performed using a 1.5T or 3T Philips Achieva MR system (Philips Medical Systems) with a dedicated bilateral phased-array breast coil and the patient in the prone position. MRI examination consisted of turbo spin-echo T1- and T2-weighted sequences and a three-dimensional dynamic contrast-enhanced sequence (Supplementary Methods). A 0.1-mmol/kg bolus of gadobutrol (Gadovist; Bayer Healthcare Pharmaceutical) was injected, followed by a 20 mL saline flush. Images were acquired 60, 120, 180, 240, 300, and 360 seconds after the contrast injection. After image acquisition, subtraction images (pre-contrast images subtracted from the early post-contrast images) were obtained automatically on a pixel-by-pixel basis. The scan duration ranged from 25 to 27 minutes. Time intervals between mammography with DBT and MRI ranged from 0 to 30 days (mean, 4.7 days).
Kim H., Yang S.Y., Ahn J.H., Ko E.Y., Ko E.S., Han B.K, & Choi J.S. (2022). Digital Breast Tomosynthesis versus MRI as an Adjunct to Full-Field Digital Mammography for Preoperative Evaluation of Breast Cancer according to Mammographic Density. Korean Journal of Radiology, 23(11), 1031-1043.
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10

Neonatal Diffusion Tensor Imaging

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All neonates were well fed before scanning and kept asleep during scan. Besides earplugs and earphones, extra foam padding was applied to reduce the sound of the scan while the neonates were asleep. DTI was acquired from 3T Philips Achieva MR system at Children’s Medical Center. The dMRI imaging parameters were: TE=78ms, TR=6850ms, in-plane field of view = 168×168mm2 mm2, in-plane imaging resolution=1.5×1.5mm2, slice thickness=1.6mm, slice number=60, 30 independent diffusion-weighted directions6 (link) uniformly distributed in space, b-value = 1000 sec/mm2, repetition=2. The axial dMRI image dimension was 256×256 after reconstruction. For dMRI, the total acquisition time was 11 minutes. With 30 DWI volumes and 2 repetitions, we accepted those scanned dMRI datasets with less than 5 DWI volumes affected by motion more commonly seen in scanning of neonates and toddlers. The affected DWI volumes were replaced by the good DWI volumes of another DTI repetition during postprocessing.
Ouyang A., Yu Q., Mishra V., Chalak L., Jeon T., Sivarajan M., Jackson G., Rollins N., Liu S, & Huang H. (2015). Structural development of human brain white matter from mid-fetal to perinatal stage. Proceedings of SPIE--the International Society for Optical Engineering, 9417, 94171P.
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