The purpose of this study was to evaluate the clinical feasibility of isotropic high-resolution 3D-T1W-MRC using iterative denoising in comparison with conventional 3D-T2W-MRC for evaluation of the biliary anatomy of living liver donors.
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Moyamoya disease requires follow-up for a long period of time, and ASL is very well suited for the evaluation of this disease. The multi-PLD PCASL is significant as a screening tool because it provides information on whole-brain perfusion distribution in a 3D rCBF map as well as information on pseudo hemodynamics.
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This liver workflow makes better use of the time between the dynamic and liver-specific phases – by shifting the time consuming acquisition of high-res T2w images and DWI to after the contrast injection and – by shortening the delay between contrast dynamics and the acquisition of hepatobiliary phase images. The protocols allow to perform a complete Primovist liver exam in a 30-minute exam slot.
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The MAGNETOM Lumina is a new 3T Open Bore system, incorporating artificial intelligence, matrix coils that automatically adjust to patient biovariability and parallel imaging/simultaneous multi-slice/compressed sensing technologies.
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Transient motion developed in 40% of patients shortly after gadoxetic acid administration, and gated free-breathing T1WI using GRASP was able to consistently provide acceptable arterial phase imaging in patients who exhibited transient motion.
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Liver iron content is an important clinical biomarker. Used with care, the R2c* values of the multi-echo Dixon VIBE in LiverLab allow estimating liver iron content. This article provides guidelines for the evaluation of liver iron.
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MR offers promising techniques for fat and iron evaluation in routine clinical liver diagnostics. This article shares the knowledge of implementing LiverLab, a comprehensive package which provides fat signal fraction (correlating with hepatic steatosis) and R2* of water (correlating with iron content).
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The article shows how to reduce total examination time of a non-contrast liver MRI/MRCP by up to 20% with no observable change in image quality. It presents a scanning protocol which prohibits table movement, particularly time-consuming shim data, throughout the course of the examination.
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This 54 year old woman presented to the gastroenterology clinic complaining of abdominal pain. A right upper quadrant ultrasound was performed demonstrating an ill-defined hypoechoic hepatic mass. MRI was recommended for further evaluation.
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This is a 54-year-old Caucasian male with a past medical history of polymyositis and recent outside hospital admission for biliary tree obstruction with subsequent ERCP, cholecystectomy, and liver biopsy. He was admitted to our institution with elevated LFTs and abdominal pain.
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This is a 38 year old female who had a CT performed for nonrelated reasons, but had incidentally detected liver masses. An MRI was ordered for further workup.
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SPAIR (Spectral Adiabatic Inversion Recovery) is a powerful technique for fat suppression which offers advantages over conventional fat suppression techniques. The technique is insensitive to B1 inhomogenities and only fat spins are suppressed/inverted.
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Volume Interpolated Breath-hold Examination (VIBE) offers three-dimensional multiphase image acquisition before and following contrast administration on a breath-hold time scale. The dynamic behavior of liver lesions and structures during the precontrast, arterial, portal venous, early equilibrium and 5-minute delayed equilibrium phases of enhancement allows more accurate characterization than static pre- and postcontrast analysis.
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BLADE measures and corrects in-plane motion through periodically rotated overlapping parallel lines with enhanced reconstruction. syngo BLADE acquires multiple low resolution data sets and combines them to make one motion free, high quality image. This provides clear images in all slice orientations and body regions such as the head, spine, liver or knee.
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This article shows the benefits of a 32-channel body coil for large field-of-view imaging in the abdomen and pelvis, including MR Angiography. The evolution of parallel imaging techniques has been very rapid, with realization of their full potential requiring development and utilization of MR systems with up to 32 receiver channels.
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Neuroendocrine tumors may be challenging to diagnose. Diffusion-weighted MR imaging (DWI) plays an important role in the accurate detection of liver lesions, which may be occult onconventional MRI and especially CT. In the presented case, the suspicion of diffuse hepatic spread is also supported by the additionally performed 68Ga-DOTATOC PET. The article shows, that DWI […]
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