Biomedical Engineering Reference
In-Depth Information
(a)
(b)
FIGURE 10.6: (See color insert.) Fully integrated whole-body MR-PET.
(a) Siemens Biograph
mMR system requires 510(k) re-
view by the FDA and is not commercially available. Due to regulatory reasons
its future availability in any country cannot be guaranteed. Please contact your
local Siemens organization for further details. (b) Simultaneously acquired
MR-PET showing bone marrow imaging in case of cancer.
™
mMR; the Biograph
™
10.4 Combining ultrasound with PET and SPECT
The real-time visualization of soft-tissue structures, movements and flow
makes ultrasound (US) a very flexible tool. Recent developments have made
diagnosis less user dependent and allow three-dimensional images of structure
and function of the volume to be diagnosed in real-time. A combination with
PET and/or SPECT with us imaging could yield additional data to better
quantify the nuclear medicine information. The us acquisition, though, re-
quires a direct contact of the probe to the skin. Only then can the us beam
be transmitted through the tissue and the probe detect the reflections from
the varying tissue and structure boundaries. These constraints most likely will
prohibit a simultaneous acquisition of PET or SPECT with us, especially as
the US probe will be hard to design to only use materials low in attenuation
for the photons used for PET and SPECT imaging.
Most likely the information will have to be fused using information of the
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