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Diagnostic Imaging

Clinical 3 T magnetic resonance by Val M. Runge, Wolfgang R. Nitz

By Val M. Runge, Wolfgang R. Nitz

Here is the 1st textbook to provide a pragmatic evaluate of the elemental
principles and medical functions for three tesla (3 T) MR imaging. geared up
into sections based on anatomical situation, every one case learn is gifted in
a concise, two-page unit that allows the reader to digest and evaluation the
material in small sections. the writer describes the events that dictate the
use of three T and explains the various scientific benefits of this box power
by drawing comparisons to corresponding reports at 1.5 T.

Highlights:

  • Case stories from best overseas specialists
    overlaying the breadth of scientific MR
  • Recommendations for the way to optimize snapshot caliber and
    tips to interpret the medical findings
  • Easy-to-follow descriptions of the strengths and
    barriers of three T
  • 400 fine quality scientific photographs and illustrations
    depicting key innovations
  • Discussion of a number of the pulse series approaches

Clinical 3T Magnetic Resonance is vital interpreting for
all radiologists, radiology citizens, MR physicists, and MR technologists
seeking to grasp this rising diagnostic tool.

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Extra resources for Clinical 3 T magnetic resonance

Example text

This method provides for the necessary reduction in SAR, taking advantage of a volume acquisition and optimizing the achievable CNR for a specific application. 6 mm3, well depicts a meniscal tear. An additional impressive application of the volume acquisition using a fast 3D SE scheme like SPACE is shown in Fig. 18–2. The achievable isotropic resolution of the original volume acquisition [one partition shown in (A)] allows for the retrospective reconstruction of a plane along the course of this tortuous spine (B).

The resultant image appears more homogeneous as a result of using any of these normalization algorithms, with one drawback being that the noise in areas with originally low signal intensities will also be enhanced. The normalization filter will only mask the spatially varying CNR. The benefits for the overall CNR gain in using the aforementioned coil design outweigh the disadvantages of having to normalize the images. Figure 8–1 presents images of an axial postcontrast T1-weighted gradient-echo (GRE) imaging scan in a postoperative astrocytoma (residual, small, enhancing tumor nodules are noted at the edges of the surgical bed, see arrows).

Problems related to MR procedures and tattoos are reported to be associated with the use of iron oxide or other metal-based pigments. A few cases are published where patients with tattoos who underwent MR procedures experienced transient skin irritation, cutaneous swelling, or heating sensations. 5% of patients with permanent cosmetics will experience problems associated with MR imaging. It has also been reported that decorative tattoos tend to cause more severe problems, including first- and seconddegree burns.

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