By Ihab R. Kamel, Elmar M. Merkle
Physique MR Imaging at 3.0 Tesla is a realistic textual content permitting radiologists to maximize the advantages of excessive box 3T MR structures in a number of physique purposes. It explains the actual ideas of MR imaging utilizing 3T magnets, and the variations among 1.5T and 3T while utilized extracranially. The book's organ-based procedure makes a speciality of optimized recommendations, supplying prompt protocols for the most proprietors of 3T MRI structures. All significant thoracic and belly organs are lined, together with breast, center, liver, pancreas, the GI tract, kidneys, prostate and feminine pelvic organs. stomach and pelvic MR angiography and MRCP also are mentioned. Protocol optimization, visual appeal of artifacts and novel purposes utilizing 3T are emphasised. Written and edited by way of specialists within the box, physique MR Imaging at 3.0 Tesla publications radiologists in optimizing imaging protocols for 3T MR structures, decreasing artifacts and opting for the benefits of utilizing 3T in physique applications
''Body MR Imaging at 3.0 Tesla is a pragmatic textual content allowing radiologists to maximize some great benefits of excessive box 3T MR platforms in quite a number physique purposes. It explains the actual ideas of MR imaging utilizing 3T magnets, and the variations among 1.5T and 3T while utilized extracranially. The book's organ-based strategy makes a speciality of optimized recommendations, supplying prompt protocols for the most proprietors of 3T MRI structures. All significant thoracic and belly organs are coated, together with breast, center, liver, pancreas, the GI tract, kidneys, prostate and feminine pelvic organs. belly and pelvic MR angiography and MRCP also are mentioned. Protocol optimization, visual appeal of artifacts and novel functions utilizing 3T are emphasised. Written and edited by way of specialists within the box, physique MR Imaging at 3.0 Tesla publications radiologists in optimizing imaging protocols for 3T MR structures, decreasing artifacts and opting for some great benefits of utilizing 3T in physique applications''--Provided via writer. Read more... physique MRI at 3T: easy concerns approximately artifacts and security / Kevin J. Chang and Ihab R. Kamel -- Novel acquisition strategies which are facilitated by way of 3T / Hiroumi D. Kitajima, Puneet Sharma, Daniel R. Kayolyi and Diego R. Martin -- Breast MR imaging / Savannah C. Partridge, Habib Rahbar and Constance D. Lehman -- Cardiac MR imaging / Christopher J. Francois, Oliver Wieben and Scott B. Reeder -- stomach and pelvic MR angiography / Henrik J. Michaely -- Liver MR imaging at 3T: demanding situations and possibilities / Elizabeth M. Hecht and Bachir Taouli -- MR imaging of the pancreas / Sang Soo Shin, Chang Hee Lee, Rafael O. P. de Campos and Richard C. Semelka -- MR imaging of the adrenal glands / Daniele Marin and Elmar M. Merkle -- Magnetic resonance cholangiopancreatography / Byung Ihn Choi and Jeong Min Lee -- MR imaging of small and massive bowel / M. L. W. Zeich, M. P. van der Paardt, A. J. Nederveen and J. Stoker -- MR imaging of the rectum, 3T vs 1.5T / Monique Maas, Doenja M. J. Lambregts and Regina G. H. Beets-Tan -- Imaging of the kidneys and MR urography at 3T / John R. Leyendecker -- MR imaging and MR-guided biopsy of the prostate at 3T / Katarzyna J. Macura and Jurgen J. Futterer -- woman pelvic imaging at 3T / Darcy J. Wolfman and Susan M. Ascher
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Additional resources for Body MR imaging at 3 Tesla
Recent implementations of this technique have used harmonic low-frequency sound waves to mechanically stress the tissues. The mechanical stress results in shear waves that may be measured by employing sensitizing gradients to detect the small cyclic motion of the protons based on phase shifts. Potential applications for this method are currently being investigated and include quantification of liver fibrosis as well as tumor detection and characterization. Several improvements to this technique have been investigated taking advantage of the higher SNR at 3T.
Furthermore, the 16-channel coil afforded increased SNR particularly near the chest wall (arrows) compared to the 7-channel coil. 3 Comparison of breast MR images acquired at 3T using a standard rectangular volume shim technique (a) and a “patient-adaptive” image-based shim technique (SmartExam Breast, Philips Healthcare, Best, The Netherlands) (b). Images were acquired using a 3D T1-weighted gradient echo sequence with parallel imaging and active fat suppression, 16-channel coil, and scan time of 2:50 minutes.
Z B1 dt % B1ÁT: ð4:1Þ In CMR, where rapid sequences are used to image cardiac motion, high B1 fields are employed to minimize pulse duration (DT), repetition time (TR), and the echo time (TE). However, the SAR is proportional to the integral of the square of the amplitude of the alternating B1 field over the time during which it is applied (Eq. 2): Z ð4:2Þ SAR / B12 dt % B12 ÁT: The precession frequency, or Larmor frequency, varies linearly with the magnetic field strength. 0T. This also leads to a greater separation in the precession frequencies of different metabolites.