In addition, 13 patients underwent cardiovascular magnetic resonance (CMR) imaging at the same time as 99mTc-DPD scintigraphy. Two of them were not included in the analysis, since their fibril type could not be determined. The investigations were performed on a Philips 1.5 T Intera or Achieva scanner (Philips, Best, The Netherlands). Cine (steady-state free-precession; SSFP) images included a stack of short-axis images covering the heart from apex to base. Ventricular volumes and mass were calculated according to standard methods, and data were compared with previously published reference values (36 (link)). For late gadolinium enhancement (LGE), phase-sensitive inversion recovery sequences were applied 10–20 min after injection of gadolinium (gadopentetate dimeglumine) covering the ventricles in three orthogonal planes.
1.5 t intera
Manufactured by Philips
The Philips 1.5 T Intera is a magnetic resonance imaging (MRI) system. It operates at a magnetic field strength of 1.5 Tesla, enabling high-quality imaging of the human body. The system is designed to provide reliable and efficient performance for a variety of clinical applications.
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Lab products found in correlation
4 protocols using 1.5 t intera
1
Cardiac Imaging of Amyloidosis Patients
2
Brain Tumor MRI Segmentation Protocol
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For this study, we reviewed 14 MRI images of brain tumors in real patients, confirmed by manual segmentation by specialist physicians,
i.e.the gold standard, as marked on the images and described in the chart of each anonymous patients.
A database was built with 116 images provided by a radiology center in the city of Petrolina on an anonymous basis (private database). The machine used for examinations was the 1.5 T Intera by Philips Medical Systems, the slices were 3.5mm thick and the spacing between each slice was 3.85mm. Also, we used 14 images from the REpository of Molecular BRAin Neoplasia DaTa (public database), provided free-of-cost by The Cancer Imaging Archive (TCIA). Thus, the total sample consisted of 130 images (slices) from 14 patients of both sexes and different ages, of which 19 were T1c, 48 T2 and 63 FSPGR T1c sequences.
The images were in the Digital Imaging and Communications in Medicine (DICOM ® ) format, with different resolutions for each type of sequence, namely: 256×256 (T2), 512×512 (FSPGR T1c) and 704×704 (T1c). Algorithms were studied and implemented in the MATrix LABoratory ® (MATLAB ® ) system, which consists of a platform using high-level programming language and an environment for algorithm development, data analysis and visualization, and numerical computing.
i.e.the gold standard, as marked on the images and described in the chart of each anonymous patients.
A database was built with 116 images provided by a radiology center in the city of Petrolina on an anonymous basis (private database). The machine used for examinations was the 1.5 T Intera by Philips Medical Systems, the slices were 3.5mm thick and the spacing between each slice was 3.85mm. Also, we used 14 images from the REpository of Molecular BRAin Neoplasia DaTa (public database), provided free-of-cost by The Cancer Imaging Archive (TCIA). Thus, the total sample consisted of 130 images (slices) from 14 patients of both sexes and different ages, of which 19 were T1c, 48 T2 and 63 FSPGR T1c sequences.
The images were in the Digital Imaging and Communications in Medicine (DICOM ® ) format, with different resolutions for each type of sequence, namely: 256×256 (T2), 512×512 (FSPGR T1c) and 704×704 (T1c). Algorithms were studied and implemented in the MATrix LABoratory ® (MATLAB ® ) system, which consists of a platform using high-level programming language and an environment for algorithm development, data analysis and visualization, and numerical computing.
3
Lumbar Spinal MRI Protocol
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A mobile MRI unit (1.5T Intera, Phillips, Amsterdam, the Netherlands) was used in our study, and each participant underwent a lumbar spinal MRI. The exclusion criteria were the presence of cardiac pacemakers, claustrophobia, or other contraindications. Participants were placed in the supine position with their legs straight during MRI; the protocol included sagittal (repetition time, 4000 ms/echo; echo time, 120 ms; field of view, 180×180 mm) and axial (repetition time, 4000 ms/echo; echo time, 120 ms; field of view, 320×320 mm) T2-weighted fast spin echo imaging.
4
MRI Imaging Protocol for Acute Stroke
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MRIs were conducted using 1.5-T Intera or 3-T Achieva scanners (Philips, Best, the Netherlands). The MRI protocol included fluid-attenuated inversion recovery (FLAIR), time-of-flight MR angiography (TOF-MRA), T2-gradient echo, and diffusion-weighted imaging (DWI) sequences. The DWI lesion was outlined using a semiautomated method (3D Slicer, https://www.slicer.org ). The DWI-based Alberta Stroke Program Early CT Score (ASPECTS) was assessed (21 (link)). The Thrombolysis in Cerebral Infarction (TICI) score was used to assess angiographic reperfusion, and the treatment was considered successful if the score was 2b, 2c, or 3 (22 (link)). Hemorrhagic transformations were evaluated on day-1 CT using the European Co-operative Acute Stroke Study-II (ECASS II) classification (23 (link)). The follow-up MRI protocol at day 6 included FLAIR sequence.
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