Lung function was determined using a model Jaeger Care Fusion Masterscreen body plethysmograph (Vyaire Medical, Höchberg, Germany). Forced volume vital capacity (FVC), percent of predicted forced expiratory volume in 1 s relative to FVC (ppFEV1), and forced expiratory flow at 25–75% of the pulmonary volume (FEF 25–75) were measured. A Magnetom Sonata, 1.5T (Siemens Healthineers, Erlangen, Germany) was used for magnetic resonance spectroscopy, to assess the concentrations of fat in liver and muscle tissue (anterior tibial and soleus muscle), and of muscle creatine and choline. Creatine was analyzed because its hepatic synthesis requires activated methyl groups that can originate from choline via betaine, methionine and S-adenosylmethionine [14 (link),33 (link)].
Magnetom sonata 1.5t
Manufactured by Siemens
Sourced in Germany
The MAGNETOM Sonata 1.5T is a magnetic resonance imaging (MRI) system manufactured by Siemens. It operates at a field strength of 1.5 Tesla and is designed to capture high-quality images of the human body.
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Lab products found in correlation
Signa hdxt 1.5t, by GE Healthcare (1 mentions)
Magnetom skyra 3t, by Siemens (1 mentions)
Magnetom avanto 1.5t, by Siemens (1 mentions)
Magnetom espree 1.5t, by Siemens (1 mentions)
Dotarem, by Guerbet (1 mentions)
Somatom volume zoom, by Siemens (1 mentions)
Magnetom aera 1.5t, by Siemens (1 mentions)
Somatom sensation 64, by Siemens (1 mentions)
5 protocols using magnetom sonata 1.5t
1
Assessing Lung Function and Metabolism
2
MRI Protocols for Nasopharyngeal Carcinoma
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MRI was performed using two 1.5-Tesla systems, Signa HDxt 1.5T (GE Healthcare Life Sciences, Chalfont, UK) and MAGNETOM Sonata 1.5T (Siemens AG, Munich, Germany) at the Second Affiliated Hospital of Zhejiang University School of Medicine. Two MRI protocols were used. The first protocol was a standard follow-up NPC MRI protocol for patients with NPC. Sequences for the first protocol included an axial T2-weighted fat-suppressed sequence, an axial T1-weighted spin-echo sequence and a contrast enhanced T1-weighted spin-echo sequence in the axial, coronal and sagittal planes following a bolus injection of 0.1 mmol gadopentetate dimeglumine (Gd-DTPA) (Magnevist; Schering AG; Bayer Leverkusen, Germany) per kg of body weight. The second protocol was modified to target the brain. Sequences for the second protocol included an axial T1-weighted spin-echo sequence and an axial T2-weighted turbo spin-echo sequence. Post-contrast axial, sagittal and coronal T1-weighted imaging was performed following an intravenous bolus injection of 0.1 mmol clinical gadolinium chelate per kg of body weight, and the imaging parameters were the same as for pre-contrast imaging.
3
MRI of Cervical Region Protocols
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Examinations of the cervical region were acquired with Magnetom Sonata® 1.5 T, Magnetom Avanto® 1.5 T, Magnetom Espree® 1.5 T, and Magnetom Skyra® 3 T (all Siemens Healthcare, Erlangen, Germany).
Due to variations between the scan protocols, only axial short tau inversion recovery (STIR)-weighted sequence, axial T1-weighted turbo spin echo (TSE) sequence, and Gadolinium contrast media enhanced (Dotarem®, Guerbet, France) axial T1-weighted TSE sequences with fat suppression were selected for study analysis.
Due to variations between the scan protocols, only axial short tau inversion recovery (STIR)-weighted sequence, axial T1-weighted turbo spin echo (TSE) sequence, and Gadolinium contrast media enhanced (Dotarem®, Guerbet, France) axial T1-weighted TSE sequences with fat suppression were selected for study analysis.
4
Head MRI Diffusion Protocol
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All patients were imaged with the institution's protocol for head MRI, which included a diffusion-weighted sequence acquired in the axial plane, with three “b”-values (0, 500, and 1000). Two ADC maps were calculated: one of them was based on b0, b500, and b1000 while the other was based only on b500 and b1000. The MR scanner used was MAGNETOM Sonata 1.5T (Siemens Healthcare, Erlangen, Germany) with 8-channel head coil; matrix size of 128 × 128 pixels; FOV: 230 × 230 mm; slice thickness of 5.0 mm; and gradient strength of 40 mT/m.
5
Cerebral Ischemia Incidence and Neutrophil-Lymphocyte Ratio
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Data of all patients were retrieved from our institutional prospective database: patients' history (hypertension, diabetes mellitus, alcohol abuse or other comorbidities), GCS (Glasgow Coma Scale) on admission, clinical symptoms on admission, laboratory ndings on admission (cerebrospinal uid and blood work, causative pathogen), clinical course, outcome and neurologic ndings at discharge, and treatment.
Arterial vascular alterations and incidence of cerebral ischemia were assessed using computed tomography imaging (CT-scan, (SIEMENS Somatom Volume Zoom, Somatom Sensation 64, Somatom De nition AS+; Siemens Healthcare, Forchheim, Germany) or magnetic resonance imaging (MRI) (SIEMENS Magnetom Sonata 1.5T, Magnetom Aera 1.5T, Siemens Healthcare, Erlangen, Germany).
NLR was calculated by dividing the absolute neutrophil count by the absolute lymphocyte count (NLR days 1, 2, 3, 4, 5, 6, 7, 8).
Arterial vascular alterations and incidence of cerebral ischemia were assessed using computed tomography imaging (CT-scan, (SIEMENS Somatom Volume Zoom, Somatom Sensation 64, Somatom De nition AS+; Siemens Healthcare, Forchheim, Germany) or magnetic resonance imaging (MRI) (SIEMENS Magnetom Sonata 1.5T, Magnetom Aera 1.5T, Siemens Healthcare, Erlangen, Germany).
NLR was calculated by dividing the absolute neutrophil count by the absolute lymphocyte count (NLR days 1, 2, 3, 4, 5, 6, 7, 8).
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