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Image Guided Therapy Prostate Group

=Image Archive+



Prostate Cancer Detection and Diagnosis: The Role of MR and its Comparison with Other Diagnostic Modalities - A Radiologist's Perspective. RA 66-year-old man, with prior brachytherapy, now with re-elevated prostate-specific antigen (PSA). Prostate MRI at 3.0 T with endorectal coil [(a) T2-weighted; (b) apparent diffusion coefficient b = 500 s/mm (ADC500); (c) ADC1400; (d) subtraction; (e) maximum slope (MaxSlope); (f) time to trans ; (i) ve] shows abnormal focus of tumor in the right anterior mid-gland (arrows). The pharmacokinetic peak (TTP); (g) area under the curve (AUC); (h) K trans, analyses show the typical pattern for prostate carcinoma [(e)–(i), color coded from low (blue) to high (red)]: MaxSlope, high; TTP, low; AUC, high; K high; ve, low. Read more here.



Image Registration for Targeted MRI-guided Transperineal Prostate Biopsy. Registration results for patients 2 (top row) and 5 (bottom row). Images on the left (a,c) show an intra-procedural axial T2W image, images on the right (b,d) show the same slice of the registered preprocedure T2W MRI. Yellow contour corresponds to the outline of the prostate gland segmented in the diagnostic image and warped to the intra-procedural image space by means of registration. Images for Patient 2 show brachytherapy seeds artifacts, as the patient previously underwent radiation therapy. Read more here.



MR-guided prostate interventions. At top right, the 3D Slicer software platform used for MRI-guided biopsy. The 3D Slicer provides guidance and navigation during MRI-guided biopsy, allowing for multiplanar views of image volumes, target selection, and control of the MR scanner imaging plane. Here, T2W images obtained in the axial plane are shown. The control panel shown is used for slice selection to ensure that the real-time planar imaging obtained during needle insertion contains the desired target. On the left, a robotic assistant system for prostate intervention in a 3T closed-bore MRI scanner. The robot is placed between the patient’s legs and the MRI compatible mechanism (bottom right). The pneumatic actuator ensures no interference to MR images. Read more here.