scholarly journals Development and validation of a virtual reality transrectal ultrasound guided prostatic biopsy simulator

2011 ◽  
pp. 19-26 ◽  
Author(s):  
Venu Chalasani ◽  
Derek W. Cool ◽  
Shi Sherebrin ◽  
Aaron Fenster ◽  
Joseph Chin ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Transrectal Ultrasound ◽  
Ultrasound Guided ◽  
Prostatic Biopsy ◽  
Development And Validation

scholarly journals Development and validation of a virtual reality transrectal ultrasound guided prostatic biopsy simulator

2013 ◽  
Vol 5 (1) ◽  
pp. 19 ◽  
Author(s):  
Venu Chalasani ◽  
Derek W. Cool ◽  
Shi Sherebrin ◽  
Aaron Fenster ◽  
Joseph Chin ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Construct Validity ◽  
Transrectal Ultrasound ◽  
Face Validity ◽  
Imaging Data ◽  
Prostatic Biopsy ◽  
Validity Testing ◽  
Left And Right ◽  
The Right ◽  
Development And Validation

Objective: We present the design, reliability, face, content andconstruct validity testing of a virtual reality simulator for transrectalultrasound (TRUS), which allows doctors-in-training to performmultiple different biopsy schemes.Methods: This biopsy system design uses a regular “end-firing”TRUS probe. Movements of the probe are tracked with a micromagneticsensor to dynamically slice through a phantom patient’s3D prostate volume to provide real-time continuous TRUS views.3D TRUS scans during prostate biopsy clinics were recorded.Intrinsic reliability was assessed by comparing the left side of theprostate to the right side of the prostate for each biopsy. A contentand face validity questionnaire was administered to 26 doctors toassess the simulator. Construct validity was assessed by comparingnotes from experts and novices with regards to the time taken andthe accuracy of each biopsy.Results: Imaging data from 50 patients were integrated into thesimulator. The completed VR TRUS simulator uses real patientimages, and is able to provide simulation for 50 cases, with ahaptic interface that uses a standard TRUS probe and biopsy needle.Intrinsic reliability was successfully demonstrated by comparingresults from the left and right sides of the prostate. Face andcontent validity respondents noted the realism of the simulator,and its appropriateness as a teaching model. The simulator wasable to distinguish between experts and novices during constructvalidity testing.Conclusions: A virtual reality TRUS simulator has successfully beencreated. It has promising face, content and construct validity results.

VIRTUAL REALITY TRANSRECTAL ULTRASOUND GUIDED PROSTATIC BIOPSY SIMULATOR

2009 ◽  
Vol 181 (4S) ◽  
pp. 793-793
Author(s):  
Venu Chalasani ◽  
Derek W Cool ◽  
Shi Sherebrin ◽  
Aaron Fenster ◽  
Joseph L Chin ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Transrectal Ultrasound ◽  
Ultrasound Guided ◽  
Prostatic Biopsy

scholarly journals Hemosepermia after transrectal ultrasound-guided prostatic biopsy: A prospective study

2013 ◽  
Vol 5 (1) ◽  
pp. 30 ◽  
Author(s):  
M Abdelkhalek ◽  
M Abdelshafy ◽  
H Elhelaly ◽  
M Kamal
Keyword(s):  
Prospective Study ◽  
Transrectal Ultrasound ◽  
Ultrasound Guided ◽  
Prostatic Biopsy ◽  
A Prospective Study

Malakoplakia prostate presenting as urinary retention: a report of two cases and review of the literature

2021 ◽  
Vol 14 (7) ◽  
pp. e243927
Author(s):  
Swaroop Subbaraya ◽  
Ajit Sawant ◽  
Prakash Pawar ◽  
Sunil Patil
Keyword(s):  
Urinary Retention ◽  
Acute Urinary Retention ◽  
Specific Antigen ◽  
Transrectal Ultrasound ◽  
Transurethral Resection Of Prostate ◽  
Review Of The Literature ◽  
Ultrasound Guided ◽  
Prostatic Biopsy ◽  
Chronic Inflammatory Condition

Malakoplakia is a rare chronic inflammatory condition, which primarily occurs in genitourinary tract, with prostatic malakoplakia being extremely rare. We present two cases of acute urinary retention, with clinically firm nodular prostate and a raised serum prostate-specific antigen. Transrectal ultrasound-guided prostatic biopsy showed features of malakoplakia. There was a significant reduction of size of prostate on transrectal ultrasonography after 4 weeks of antibiotics. However, one patient had failed trial without catheter and was subjected to transurethral resection of prostate. The biopsy of the prostatic chips also showed features of malakoplakia. Other patient improved symptomatically after antibiotics and was managed conservatively. Both the patients are on regular follow-up and are asymptomatic. Prostatic malakoplakia presenting as urinary retention is very uncommon with around 12 cases in the literature. Recognition of prostatic malakoplakia is important because clinically it can masquerade prostatic malignancy. Treatment with antibiotics is necessary before subjecting the patients for surgery in patients with obstructive symptoms.

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