BioMed Research International / 2014 / Article / Fig 5

Review Article

Multiparametric MRI-Targeted TRUS Prostate Biopsies Using Visual Registration

Figure 5

Comparison of MR and TRUS imaging acquisition planes of the prostate. MRI (a) and TRUS (b) imaging are performed with different acquisition planes. MR imaging is usually acquired perpendicularly to the prostate wall (or strictly transverse), with a slice thickness varying from 2.5 to 5 mm, homogeneously distributed (red lines overlaid on image (a)). TRUS imaging is acquired using an endorectal probe inserted in rectum, through the anal canal which is a fixed point that limitates probe translation and angulation. Hence, TRUS images acquired at the apex will often match MRI, whereas those acquired at the base will require a registration step (visual or computer-assisted) to match MRI.
(a)
(b)

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