MRI was performed using a 3.0-T MRI system (Intera Achieva 3.0 T Quasar Dual; Philips Healthcare, Best, The Netherlands) in five patients or a 1.5-T MRI system (Intera Achieva 1.5 T Pulsar; Philips Healthcare, Best, The Netherlands) in the remaining two patients. All transverse MRI images were obtained at a section thickness of 3–4 mm with 1 mm intersection gap. T2-weighted fast spin-echo images (TR/TE, 3210–5710/90 ms; field of view, 20 × 20 cm), T1-weighted spin-echo images (TR/TE, 687–827/9–18 ms; field of view, 20 × 20 cm), and diffusion-weighted (DW) short-tau inversion recovery (STIR) single-shot spin-echo echo-planar (TR/TE/TI, 5490–18,580/70–72/170–240 ms; field of view, 24 × 24–40 × 40 cm; b value, 0 and 1000 s/mm2) images were obtained in all patients. Gadolinium-enhanced fat-suppressed T1-weighted spin-echo images (TR/TE, 630–652/9–15 ms; field of view, 20 × 20 cm) were obtained after the intravenous injection of 0.1 mmol/kg of gadopentetate dimeglumine (Magnevist; Bayer Healthcare, Leverkusen, Germany) or gadobutrol (Gadavist, Bayer HealthCare, Leverkusen, Germany) in five patients.
Intera achieva 3.0 t quasar dual
Manufactured by Philips
Sourced in United States
The Intera Achieva 3.0 T Quasar Dual is a magnetic resonance imaging (MRI) system manufactured by Philips. It features a 3.0 Tesla superconducting magnet and a dual-channel radiofrequency (RF) transmission system. The system is designed to provide high-quality imaging for a wide range of clinical applications.
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4 protocols using intera achieva 3.0 t quasar dual
1
Multimodal MRI Protocol for Brain Imaging
2
MRI Imaging of Cutaneous Basal and Squamous Cell Carcinomas
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MR imaging was performed using a 1.5T MR imaging system (Intera Achieva 1.5T Pulsar; Philips Medical Systems, Best, The Netherlands) for seven cBCCs and seven cSCCs or a 3T MR imaging system (Intera Achieva 3.0T Quasar Dual; Philips Medical Systems) for seven cBCCs and eight cSCCs. MR imaging data were obtained using the parallel imaging technique at a section thickness of 3–4 mm with a 1-mm intersection gap, and a 16 × 16–20 × 20-cm field of view. Axial T1-weighted spin-echo (repetition time [TR]/echo time [TE], 387–752/9–16 ms), axial and oblique sagittal or coronal T2-weighted fast spin-echo (TR/TE, 3000–5982/90–120 ms), and axial and oblique sagittal or coronal fat-suppressed T2-weighted fast spin-echo (TR/TE, 3030–6123/80–120 ms) images were obtained for all 29 patients.
3
Magnetic Resonance Imaging Protocols for Bone Tumors
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MRI was performed using a 1.5 T unit (Intera Achieva 1.5 T Pulsar; Philips Healthcare, Best, The Netherlands), a 1.5 T unit (SIGNA Explorer; GE Medical Systems, The United States), or a 3.0 T unit (Intera Achieva 3.0 T Quasar Dual; Philips Healthcare, Best, The Netherlands). Seven patients with MT-MCT and all 50 with BMCT unenhanced underwent contrast-enhanced MRI, whereas 4 with MT-MCT underwent unenhanced MRI alone. All MRI images were obtained at a section thickness of 4–8 mm with 1–2 mm intersection gap and a 26 × 26–36 × 36-cm field of view. T2-weighted fast spin-echo (TR/TE, 2000–7000/81–100 ms), T1-weighted spin-echo (TR/TE, 566–728/6.2–17 ms), and fat-suppressed T1-weighted fast spin-echo (TR/TE, 650–816/6.7–15 ms) were obtained in axial and coronal or sagittal planes. In 8 patients with MT-MCT and 50 with BMCT, diffusion-weighted single shot spin-echo echo-planar (TR/TE, 2394–5000/69–72 ms; b-value = 0 and 1000 s/mm2) images were obtained in axial planes. In 7 patients with MT-MCT and 50 with BMCT, axial and coronal or sagittal fat-suppressed gadolinium-enhanced T1-weighted spin-echo (TR/TE, 650–816/6.7–17 ms) images were obtained after the intravenous injection of 0.1 mmol/kg of gadopentetate dimeglumine (Magnevist, Bayer HealthCare, Leverkusen, Germany) or gadobutrol (Gadavist, Bayer HealthCare, Leverkusen, Germany).
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Unenhanced and Contrast-Enhanced MRI Imaging
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All patients underwent unenhanced and enhanced MRI using a 1.5-T-MRI system (Intera Achieva 1.5 T Pulsar; Philips Medical Systems, Best, The Netherlands) or a 3.0 T-MRI system (Intera Achieva 3.0 T Quasar Dual; Philips Medical Systems, Best, The Netherlands). All MR images were obtained at a section thickness of 3–4 mm with 1-mm intersection gap and a 20 × 20–26 × 26-cm field of view. Axial and coronal T1WIs (TR/TE, 609–827/9–18 ms), axial T2WIs (TR/TE, 3398–5709/90 ms), and coronal fat-suppressed T2WIs (TR/TE, 3330–6670/60–90 ms) were obtained. Axial and coronal fat-suppressed CET1WIs (TR/TE, 630–756/9–18 ms) were obtained after the intravenous injection of 0.1 mmol/kg of gadopentetate dimeglumine (Magnevist, Bayer HealthCare, Leverkusen, Germany) or gadobutrol (Gadavist, Bayer HealthCare, Leverkusen, Germany).
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