Britton E. Tisdale¹, D. Robert Siemens¹, John Lysack², Robert L. Nolan², James W. L. Wilson¹

Canadian Journal of Urology, Vol.14, No.2, pp. 3489-3492, 2007

Abstract Objectives: To correlate the measured dimensions of urinary stones from spiral non-contrast computerized tomography (CT) with that of plain radiography (KUB).
Methods: The transverse diameter as reported on CT was compared to the measured transverse diameter on KUB for 61 stones. The transverse and craniocaudal dimensions on CT were then re-measured for 30 urinary stones and again compared to the re-measured values for KUB. The craniocaudal dimension on CT was determined by measuring the stone on reconstructed coronal CT images. Measurements between imaging modalities were blinded and performed consecutively by a dedicated investigator.
Results: The mean transverse… More >

Can Talug, Jeffrey Mullins, Susan E. Saunders, Stanley Zaslau

Canadian Journal of Urology, Vol.14, No.5, pp. 3707-3709, 2007

Abstract In a patient with a prior history of pancreatitis or abdominal trauma, radiographic imaging may only show abnormalities in the urinary tract. When these patients are first seen with subcapsular or perinephric fluid collections, percutaneous drainage can be both diagnostic and therapeutic. More >

R.E. Meyers¹, K.S. Deacon¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.3, No.4, pp. 211-216, 2007, DOI:10.3970/icces.2007.003.211

Abstract Using a CCD camera we investigated and successfully achieved quantum ghost imaging of the stencil letters "ARL" placed in front of a photon bucket detector from photons which did not interact with the stencil letter object. We investigated the role of speckle spatial size and time scales in resolving images. The process suggests new mathematical paradigms and important applications for quantum ghost imaging . More >

Michael L. Pianezza¹, Aiden Mokhtassi², Louis Wu², R. John D’A. Honey¹

Canadian Journal of Urology, Vol.13, No.4, pp. 3204-3207, 2006

Abstract Renal lymphangiectasia is a rare renal condition. We present a case of bilateral renal lymphangiectasia in a 52-year-old man who presented with bilateral flank pain and gross hematuria. The clinical features, diagnosis and characteristic imaging findings are reviewed. This condition should be considered in the differential diagnosis of cystic renal masses in both children and adults. More >

Richard D. Sowery, D. Robert Siemens

Canadian Journal of Urology, Vol.11, No.5, pp. 2407-2410, 2004

Abstract Objective: To characterize tumor growth of patients managed conservatively for renal cell carcinoma.
Methods: Patients electing conservative management of radiographically determined renal cell carcinomas were referred to a surveillance database. Exclusion criteria consisted of locally advanced disease (>T2) and those with metastatic disease. Clinical follow-up included renal imaging with ultrasound or computed tomography at least every 6 months.
Results: Twenty-two patients were originally managed conservatively, two of whom subsequently underwent nephrectomy because of rapid tumor growth. Mean follow-up was 26 months. Mean tumor volume and diameter at presentation was 62.4 cc and 4.08 cm respectively. Overall tumor growth More >

A. Tsourkas, R. Weissleder^1,1

Molecular & Cellular Biomechanics, Vol.1, No.2, pp. 133-146, 2004, DOI:10.3970/mcb.2004.001.133

Abstract Traditionally, fluorescent and luminescent reporter proteins have been used as indicators of gene expression and protein localization. However, insightful mutagenesis and protein engineering strategies have transformed these simple passive reporters into active biological sensors. Molecular reporters are now being designed to alter their intrinsic optical properties in response to specific biomolecular interactions. Applications for these novel biological sensors range from monitoring intracellular pH and ion fluxes to detecting protein-protein interactions and enzymatic activity. The ability to monitor the dynamics of intracellular activity in response to external stimuli can help elucidate the cascade of events involved More >

Darren T. Beiko, Kenneth A. Beasley, Pavin K. Koka, James D. Watterson, Linda Nott, John D. Denstedt, Hassan Razvi

Canadian Journal of Urology, Vol.10, No.6, pp. 2062-2067, 2003

Abstract Introduction/objective: Advances in ureteroscope design and refinements of ancillary instrumentation have resulted in an expanded role for ureteroscopy in the management of urinary calculi. Technological enhancements coupled with improved endourologic skills have also been associated with a reduction in procedural-related complications. Historically, postoperative imaging with ultrasound (U/S) or intravenous pyelogram (IVP) had been advocated to rule out persistent obstruction due to retained stone fragments or ureteral stricture. The purposes of this study were to evaluate the incidence of postoperative ureteral obstruction in a contemporary series of patients undergoing ureteroscopic holmium:YAG laser lithotripsy without basket extraction of… More >

Loïc Sentilhes¹, Frederick Dunet¹, Denis Thoumas², Alain Khalaf¹, Philippe Grise¹, Christian Pfister¹

Canadian Journal of Urology, Vol.9, No.6, pp. 1698-1699, 2002

Abstract exploration was not performed and a period of watchful waiting with evolution control by ultrasonography was decided. Results: After a 3 month follow-up, the ultrasonography control revealed a total re-vascularization of the vessels and a reduction of the lesion size. Conclusion: The authors suggest that the combination of ultrasonography and MRI, in the management of testicular infarction, may avoid invasive surgery. More >