Strategies for repeat prostate biopsies

Terris, Martha K.

doi:10.1007/s11934-009-0030-y

Cited by 15 publications

(19 citation statements)

References 55 publications

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“…In conclusion, we performed a retrospective accuracy analysis of an MRI-guided robotic prostate biopsy system [6,7] by using a three-stage registration procedure to capture prostate motion during biopsy with an accuracy of 2 mm. The volumetric and soft tissue imaging capabilities of MRI enabled us to identify the needle location in relation to the prostate anatomy.…”

Section: Discussionmentioning

confidence: 99%

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Accuracy analysis in MRI-guided robotic prostate biopsy

Lassó

Guion

et al. 2013

Int J CARS

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Purpose To assess retrospectively the clinical accuracy of an magnetic resonance imaging-guided robotic prostate biopsy system that has been used in the US National Cancer Institute for over 6 years. Methods Series of 2D transverse volumetric MR image slices of the prostate both pre (high-resolution T2-weighted)-and post (low-resolution)-needle insertions were used to evaluate biopsy accuracy. A three-stage registration algorithm consisting of an initial two-step rigid registration followed by a B-spline deformable alignment was developed to capture prostate motion during biopsy. The target displacement (distance between planned and actual biopsy target), needle placement error (distance from planned biopsy target to needle trajectory), and biopsy error (distance from actual biopsy target to needle trajectory) were calculated as accuracy assessment. Results A total of 90 biopsies from 24 patients were studied. The registrations were validated by checking prostate contour alignment using image overlay, and the results were accurate to within 2 mm. The mean target displacement, needle placement error, and clinical biopsy error were 5.2, 2.5, and 4.3 mm, respectively. Conclusion The biopsy error reported suggests that quantitative imaging techniques for prostate registration and motion compensation may improve prostate biopsy targeting accuracy.

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Section: Discussionmentioning

confidence: 99%

“…TRUS-guided biopsy only has a detection rate of 20–40 % [2,3], and it misses cancer in at least 20 % of the cases [4,5]. Such observations have been seen with no major changes for about a decade [6,7]. Cancers have been routinely missed, resulting in a large number of repeat biopsy cases [8].…”

Section: Introductionmentioning

confidence: 99%

Accuracy analysis in MRI-guided robotic prostate biopsy

Lassó

Guion

et al. 2013

Int J CARS

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“…Terris described indications for repeat biopsy as 1) a change in PSA, 2) HGPIN and 3) ASAP. 8 In regard to the PSA change a value of greater than 10 ng/ml was believed to be an indication for repeat biopsy. However, in men with PSA 4 to 10 ng/ml additional parameters would suggest repeat biopsy, including percent free PSA less than 25%, PSA density greater than 0.15 ng/ml/cm 3 and PSA velocity greater than 0.75 ng/ml per year.…”

Section: Discussionmentioning

confidence: 99%

Patterns of Repeat Prostate Biopsy in Contemporary Clinical Practice

2015

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“…Numerous studies have shown that TRUS-guided prostate biopsy fails to detect cancer in at least 20% of patients with cancer [11]–[14]. Studies report that TRUS-guided biopsies are limited by low sensitivity of 60% with only 25% positive predictive value, in which no significant change has been seen, for example, by Terris in the past 15 years [15]. Such observations have been corroborated by many, including [7], and [16]–[19].…”

Section: Prostate Cancer Diagnosis and Therapymentioning

confidence: 99%

An MRI-Compatible Robotic System With Hybrid Tracking for MRI-Guided Prostate Intervention

Krieger

Iordachita

Guion

et al. 2011

IEEE Trans. Biomed. Eng.

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This paper reports the development, evaluation, and first clinical trials of the access to the prostate tissue (APT) II system—a scanner independent system for magnetic resonance imaging (MRI)-guided transrectal prostate interventions. The system utilizes novel manipulator mechanics employing a steerable needle channel and a novel six degree-of-freedom hybrid tracking method, comprising passive fiducial tracking for initial registration and subsequent incremental motion measurements. Targeting accuracy of the system in prostate phantom experiments and two clinical human-subject procedures is shown to compare favorably with existing systems using passive and active tracking methods. The portable design of the APT II system, using only standard MRI image sequences and minimal custom scanner interfacing, allows the system to be easily used on different MRI scanners.

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Strategies for repeat prostate biopsies

Cited by 15 publications

References 55 publications

Accuracy analysis in MRI-guided robotic prostate biopsy

Accuracy analysis in MRI-guided robotic prostate biopsy

Patterns of Repeat Prostate Biopsy in Contemporary Clinical Practice

An MRI-Compatible Robotic System With Hybrid Tracking for MRI-Guided Prostate Intervention

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