Visualized Prostate Biopsy: An Intuitive 3D User Interface for Systematic and Targeted Biopsy

2021 ◽  
Author(s):  
Samsun Lampotang ◽  
Thomas Stringer ◽  
David E. Lizdas
Keyword(s):  
User Interface ◽  
Prostate Biopsy ◽  
Targeted Biopsy ◽  
3D User Interface

scholarly journals MRI-TRUS fusion biopsy in diagnostics of prostate cancer

2021 ◽  
Vol 14 (3) ◽  
pp. 86-93
Author(s):  
R.A. Romanov ◽  
◽  
A.V. Koryakin ◽  
A.V. Sivkov ◽  
B.Ya. Alekseev ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Prostate Cancer ◽  
Magnetic Resonance ◽  
Prostate Biopsy ◽  
Targeted Biopsy ◽  
Resonance Imaging ◽  
Fusion Biopsy ◽  
Advantages And Disadvantages ◽  
Magnetic Resonance Imaging Mri ◽  
Targeted Biopsies

Introduction. Significant improvement in the quality of visualization of the prostate using magnetic resonance imaging (MRI), as well as the development of technologies for virtual combination of MRI and ultrasound images opens new horizons in the diagnosis of prostate cancer. The introduction of the PI-RADS system has allowed the standardization of MRI findings, and the development of fusion biopsy systems seeks to make diagnostics more accurate and less operator-dependent. Materials and methods. In this literature review, we evaluate the effectiveness of various biopsy approaches and discuss the prospects for targeted biopsies. The search for publications was carried out in the databases PubMed, e-library, Web of Scince et al. For citation, 55 literature sources were selected that met the search criteria for the keywords, «prostate cancer», «biopsy», «MRI», «TRUS», «fusion». Results. Diagnosis of prostate cancer using MRI. Modern technologies for radiological diagnosis of prostate cancer using magnetic resonance imaging (MRI) are based on the standardized PI-RADS protocol, using different modes (T2, diffusion-weighted images and contrast enhancement), which provides the best visualization of tumor-suspicious nodes in the prostate gland, allowing determination of lesion localization and size for subsequent targeted biopsy. Options for performing a prostate biopsy to diagnose prostate cancer. A description of the methods and effectiveness of transrectal and transperineal biopsy under ultrasound guidance is carried out - due to the fact that ultrasound diagnostics of prostate cancer has a rather low sensitivity due to small differences in the ultrasound structure of normal and tumor tissue of the prostate, an extended template biopsy technique was proposed, which involves puncture of the prostate through a special lattice. It also describes the technology of fusion biopsy and also provides literature data comparing the diagnostic accuracy of standard TRUS and fusion prostate biopsy, as well as the importance of transrectal / transperineal access. Questions for further study. Given the desire to reduce the number of biopsies while maintaining or even increasing the accuracy of diagnosing prostate cancer, data from studies investigating the feasibility of combining polyfocal (non-targeted) and targeted (targeted) biopsies are presented. Conclusion. The existing methods of non-targeted biopsy (polyfocal, saturation, template) and targeted (fusion biopsy) have their advantages and disadvantages, which currently do not allow making certain recommendations for their use, but a significant number of authors prefer MRI-as sisted, fusion -biopsy.

Design of a 3D user interface to a database

1994 ◽  
pp. 171-185 ◽  
Author(s):  
John Boyle ◽  
John E. Fothergill ◽  
Peter M. D. Gray
Keyword(s):  
User Interface ◽  
3D User Interface

Development of a 3D User Interface for Programming a Robotic Arm Using Virtual Reality

2021 ◽  
pp. 435-446
Author(s):  
Marcela Saavedra ◽  
Morelva Saeteros ◽  
Adriana Riofrio ◽  
Gustavo Caiza
Keyword(s):  
Virtual Reality ◽  
User Interface ◽  
Robotic Arm ◽  
3D User Interface

A Freehand Vascular Designing and Modeling Tool for Surgery Simulation

2011 ◽  
Vol 11 (3) ◽  
Author(s):  
J. X. Guo ◽  
Q. Meng ◽  
S. Li ◽  
Y. P. Chui ◽  
S. C. H. Yu ◽  
...  
Keyword(s):  
User Interface ◽  
Tube Model ◽  
Vascular Structure ◽  
Surgery Simulation ◽  
Vascular Tree ◽  
Modeling Tool ◽  
Automatic Initialization ◽  
3D User Interface ◽  
Parallel Frame

This paper presents an intuitive sketching tool for human-computer interactively designing and modeling the vascular structure. Our system supports freehand outlining of the initial vascular structure through a 3D user interface, which is capable of modeling tubular vessel segments as well as bifurcations. The editing capability can be used for completing partially segmented vascular information such as the topology and radius, as well as designing normal vascular structure or pathological vascular structure such as the aneurysm and stenosis for medical simulations curriculum. Our tool may also be used in the various semi-automatic initialization steps for segmentation and registration processes such as the positioning of 3D seed and land-marking of vessels on top of different modalities. The improved parallel frame approach is used for sweeping surfaces along the composed curve of vascular tree such that the vascular structure can be easily and well visualized as a tube model.

MRI-US fusion targeted biopsy results in patients without history of prostate biopsy.

2016 ◽  
Vol 34 (2_suppl) ◽  
pp. 150-150
Author(s):  
Cayce Nawaf ◽  
James Rosoff ◽  
Jeffrey Weinreb ◽  
Amanda Lu ◽  
Angelique Levi ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Prostate Biopsy ◽  
Low Grade ◽  
Test Results ◽  
Targeted Biopsy ◽  
Chi Square ◽  
Detection Rates ◽  
History Of ◽  
Clinically Significant ◽  
Mapping Biopsy

150 Background: Results from 12-core template mapping biopsy (Mbx) and concurrent MRI-US fusion targeted biopsy (Tbx) were compared in 118 men without prior biopsy. Methods: Between 12/2012 and 06/2015, 374 men with an indication for prostate biopsy presented to our institution and underwent pre-biopsy mpMRI followed by 12-core standard trans-rectal mapping biopsy (Mbx) and MRI-Ultrasound fusion targeted biopsy (Tbx) of lesions identified on mpMRI. The combination of Mbx and Tbx, when both occurred, constitutes a fusion biopsy (Fbx). Men who underwent both Mbx with or without Tbx using the Artemis/Pro-Fuse system with no previous biopsy were included. Patients without a lesion on MRI underwent Mbx only. Maximum Gleason scores (GS) was assigned on a per patient basis with Mbx GS available for all patients in the cohort and Tbx GS available only for patients with a lesion visible on MP-MRI. Clinically significant (CS) was defined as GS ≥3+4. GS per patient was compared by chi-square and McNemar’s test. Results: 118 men met inclusion criteria (mean age=64.9, mean PSA=11.5). Prostate cancer was detected in 64 (54%) Fbx cases. Cancer detection rates for Mbx and Tbx were 54% and 57%, respectively. In patients where Fbx identified CS cancer, Tbx was more likely to have identified the cancer than Mbx (96% vs 72%; p < 0.001). Fewer GS 6 cancers were detected by Tbx (n=7) than by Mbx (n=25), and Tbx alone would have prevented the detection of 21 (18%) cases of GS 6 disease. Conversely, more GS≥ 7 (50% of men) was detected on Tbx than on Mbx (33% of men). In total, there were 16 patients (13.5%) that were missed or understaged by Tbx, but only 4 of these patients (3%) were GS≥ 7. In contrast, there were 19 (16%) patients that were missed or understaged by Mbx, but 17 (14%) of these 19 patients harbored GS≥ 7 disease. Conclusions: In biopsy-naive men who are suspected to have prostate cancer, Tbx provides improved detection of CS prostate cancer compared with Mbx while decreasing the detection of low-grade disease. Tbx alone in biopsy-naive men should be considered if missing 3% of CS disease is acceptable. [Table: see text]

scholarly journals A Hybrid 2D/3D User Interface for Radiological Diagnosis

2017 ◽  
Vol 31 (1) ◽  
pp. 56-73 ◽  
Author(s):  
Veera Bhadra Harish Mandalika ◽  
Alexander I. Chernoglazov ◽  
Mark Billinghurst ◽  
Christoph Bartneck ◽  
Michael A. Hurrell ◽  
...  
Keyword(s):  
User Interface ◽  
Radiological Diagnosis ◽  
3D User Interface
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