Surgical Planning Laboratory - Brigham & Women's Hospital - Boston, Massachusetts USA - a teaching affiliate of Harvard Medical School

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Development and Preliminary Evaluation of a Motorized Needle Guide Template for MRI-guided Targeted Prostate Biopsy

Institution:
1Surgical Navigation and Robotics Laboratory, Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA.
2Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA.
Publisher:
IEEE Engineering in Medicine and Biology Society
Publication Date:
Nov-2013
Journal:
IEEE Trans Biomed Eng
Volume Number:
60
Issue Number:
11
Pages:
3019-27
Citation:
IEEE Trans Biomed Eng. 2013 Nov;60(11):3019-27.
PubMed ID:
23335658
PMCID:
PMC3778164
Keywords:
Prostate Biopsy, MRI-guided procedure, needle guide template, robotic intervention, ultrasonic motor
Appears in Collections:
SNR, NCIGT, Prostate Group, SLICER, SPL
Sponsors:
P01 CA067165/CA/NCI NIH HHS/United States
P41 EB015898/EB/NIBIB NIH HHS/United States
P41 RR019703/RR/NCRR NIH HHS/United States
R01 CA111288/CA/NCI NIH HHS/United States
R01 CA124377/CA/NCI NIH HHS/United States
R01 CA138586/CA/NCI NIH HHS/United States
Generated Citation:
Song S-E., Tokuda J., Tuncali K., Tempany C.M., Zhang E., Hata N. Development and Preliminary Evaluation of a Motorized Needle Guide Template for MRI-guided Targeted Prostate Biopsy. IEEE Trans Biomed Eng. 2013 Nov;60(11):3019-27. PMID: 23335658. PMCID: PMC3778164.
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To overcome the problems of limited needle insertion accuracy and human error in the use of a conventional nee-dle guide template in MRI-guided prostate intervention, we developed a motorized MRI-compatible needle guide template that resembles a TRUS-guided prostate template. The motorized template allows automated, gapless needle guidance in a 3T MRI scanner with minimal changes in the current clinical procedure. To evaluate the impact of the motorized template on MRI, signal-to-noise ratio and distortion were measured under various system configurations. A maximum of 44% signal-to-noise ratio decrease was found when the ultrasonic motors were running, and a maximum of 0.4% image distortion was observed due to the presence of the motorized template. To measure needle insertion accuracy, we performed four sets of five random target needle insertions mimicking four biopsy procedures, which resulted in an average in-plane targeting error of 0.94 mm with a standard deviation of 0.34 mm. The evaluation studies indicated that the presence and operation of the motorized template in the MRI bore creates insignificant image degradation, and provides sub-millimeter targeting accuracy. The automated needle guide that is directly controlled by navigation software eliminates human error so that the safety of the procedure can be improved.

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