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In a magnetic field of 3.0Tesla, motion artifacts are more serious, particularly in MRI of the moving upper abdomen, than those in a field of 1.5Tesla or lower. We carried out free-breathing Prospective Acquisition Correction (PACE) T2-weighted imaging of the upper abdomen in order to control the motion artifacts produced with a 3Tesla MRI System. We employed five volunteers for free-breathing T2-weighted...
MR myelography (MR imaging of nerve root of the Lumber vertebra) is one of examination methods widely used. Either 2D or 3D scanning is selected depending on the patient lesions. There are so many tactics to perform MR myelography that is not suitably optimized. On the other hand, whole-body 3T MRI machines are now used world wide and many cerebrospinal data are reported, however, tactics to perform...
Diffusion-weighted imaging (DWI) of the human brain is well established with 1.5T machines. DWI is now used also for other regions than the brain, and especially focused on prostate cancer detection as a promising tool. On the other hand, 1H-MR spectroscopy of the human prostate has been used also for the detection and localization of prostate cancer. We detected and identified the prostate cancer...
Diffusion-weighted imaging (DWI) of the human brain is well established with 1.5T MRI. DWI is now used also for other regions than the brain, and especially focused on prostate cancer detection as a promising tool. On the other hand, 1H-MR spectroscopy of the human prostate has been used also for detection and localization of prostate cancer. One disadvantage of 1.5T prostate spectroscopy is the use...
Three-Tesla MRI machines are widely used in clinical medicine. Expectations to 3.0T MRA are so large in depicting blood vessels in a short time, clearly and non-invasively. We developed a 3.0T MRA tactics and carried it out for peripheral regions without contrast agent. Five volunteers were examined with a 3.0T machine. The sequence was 3D-HASTE. Parameters were as follows; FOV: 450 mm, Matrix: 192...
Susceptibility-weighted imaging (SWI) is a powerful technique to produce an image with a strong contrast of magnetic susceptibility in a high field. The technique is particularly useful in emphasizing blood vessels, for example, the vein and iron accumulated lesions in the brain. What can be found by applying the technique to the abdomen instead of the brain? We carried out a newly developed 2D breath-held...
Multi-slice 2D turbo spin echo (TSE) sequences are widely used for T2-weighted MR imaging of the liver. On the other hand, there is a demand for 3D imaging to enable the observation of thinner slices, though 3D TSE has often been associated with a high SAR (specific absorption rate) which is caused by repeated 180-degree refocusing pulses. The high SAR has been a limiting factor for 3D TSE, especially...
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