Christopher B. Allard¹, Anatoly Shuster², Jehonathan H. Pinthus³, Forough Farrokhyar⁴, A. Raees¹, Michael Patlas², Edward D. Matsumoto¹, J. Paul Whelan¹

Canadian Journal of Urology, Vol.19, No.6, pp. 6554-6559, 2012

Abstract Introduction: Obese patients are at increased risk for renal stones as well as treatment failures due to increased skin-to-stone distances (SSD) and harder stone compositions. We investigated the relationships between obesometric parameters (body mass index [BMI], body fat distribution and obesity-related hormone levels) with SSD and stone hardness.
Materials and methods: We prospectively enrolled patients undergoing stone interventions at our institution. Computed tomography (CT) scans were analyzed; adipose tissue was identified according to Hounsfield units (HU) and separated into subcutaneous (SAT) and visceral (VAT) components. The pixels were averaged at three levels to calculate fat distribution: %VAT… More >

Chen-Ye Tang, Qiang Fu, Ren-Jie Cui, Xian-Jun Sun

Canadian Journal of Urology, Vol.19, No.6, pp. 6548-6553, 2012

Abstract Introduction: To investigate factors correlated with erectile dysfunction (ED) in patients with traumatic urethral strictures undergoing end-to-end anastomotic urethroplasty (AU).
Materials and methods: Between January 2010 and January 2011, 41 patients with urethral strictures resulting from pelvic fracture urethral distraction defects underwent end-to-end AU. The abridged International Index of Erectile Function (IIEF-5) was used to subjectively assess erectile function at admission and 2 weeks postoperatively.
Results: Pre- and post-injury IIEF-5 scores differed significantly (23.54 ± 1.45 versus 10.02 ± 3.57; p < 0.0001), but pre- and postoperative scores did not (10.02 ± 3.57 versus 9.29 ± 4.14; p… More >

Ricardo Palmerola¹, Paul Smith², Vanessa Elliot², Carl T. Reese², Frank B. Mahon², Lewis E. Harpster², Nikolina Icitovic¹, Jay D. Raman^2,3

Canadian Journal of Urology, Vol.19, No.6, pp. 6542-6547, 2012

Abstract Introduction: Indications for prostate needle biopsy (PNB) include elevated serum prostate-specific antigen (PSA) and/or abnormal digital rectal examination (DRE). We evaluated a contemporary cohort of men undergoing PNB to determine cancer detection rates when stratified by DRE status.
Materials and methods: The charts of 806 men who underwent a PNB were reviewed. Serum PSA was categorized as normal or abnormal according to age-specific criteria. A normal DRE was defined as a smooth, age-appropriate, asymmetric, or uniformly enlarged prostate. An abnormal DRE was defined by either a nodule or induration. Sensitivity, specificity, and predictive values were determined for… More >

David M. Marcus^1,5, Daniel J. Canter^2,5, Ashesh B. Jani^1,2,5, Ryan W. Dobbs², David M. Schuster³, Bradley C. Carthon^4,5, Peter J. Rossi^1,2,5

Canadian Journal of Urology, Vol.19, No.6, pp. 6534-6541, 2012

Abstract Introduction: External beam radiotherapy (EBRT) is widely utilized as primary therapy for clinically localized prostate cancer. For patients who develop locally recurrent disease after EBRT, local salvage therapy may be indicated. The primary modalities for local salvage treatment in this setting include radical prostatectomy, cryotherapy, and brachytherapy. To date, there is little data describing outcomes and toxicity associated with each of these salvage modalities.
Materials and methods: A review of the literature was performed to identify studies of local salvage therapy for patients who had failed primary EBRT for localized prostate cancer. We focused on prospective trials… More >

John J. Mulcahy

Canadian Journal of Urology, Vol.19, No.6, pp. 6531-6533, 2012

Abstract This article has no abstract. More >

Leonard G. Gomella

Canadian Journal of Urology, Vol.19, No.6, pp. 6530-6530, 2012

Abstract This article has no abstract. More >

P. K. Das^*, S. Chakraborty, S. Bhaduri

Frontiers in Heat and Mass Transfer, Vol.3, No.1, pp. 1-17, 2012, DOI:10.5098/hmt.v3.1.3008

Abstract A state of the art review of critical heat flux during flow boiling through mini and microchannels has been provided based on the open literature. This review mainly examines three aspects, namely the experimental investigations, the available correlations and the state of prediction using those correlations and finally the proposed physical mechanisms as well as the theoretical models. Before discussing the specific literature on microchannels, a brief overview of critical heat flux for pool and flow boiling is provided. The review has been concluded with a summary of the available information on this topic and More >

Sira Saisorn^a,b, Somchai Wongwises^b,c,∗

Frontiers in Heat and Mass Transfer, Vol.3, No.1, pp. 1-7, 2012, DOI:10.5098/hmt.v3.1.3007

Abstract Two-phase pressure drop during flow boiling has been studied for several decades. Obviously, the publications available on micro-channels are relatively small compared with those for ordinarily sized channels. Although the use of micro-channels yields several advantages, the pressure drop taking p lace in these extremely small channels is higher than that in the ordinarily sized channels because of the increased wall friction. The knowledge of the two-phase pressure drop characteristics in addition to heat transfer phenomena is essential to the design and evaluation of the micro-systems. In this paper, recent research on the flow boiling More >

Sira Saisorn^a,b, Somchai Wongwises^b,c,*

Frontiers in Heat and Mass Transfer, Vol.3, No.1, pp. 1-15, 2012, DOI:10.5098/hmt.v3.1.3006

Abstract A summary of recent research on flow boiling in micro-channels is provided in this article. This review aims to survey and identify new findings arising in this important area, which may contribute to optimum design and process control of high performance miniature devices comprising extremely small channels. Several criteria for defining a micro-channel are presented at first and the recent works on micro-scale flow boiling are subsequently described into two parts including flow visualization and two-phase heat transfer. The results obtained from a number of p revious studies show that the flow behaviours and heat More >

Amit Agrawal^a,*, V.S. Duryodhan^a, S. G. Singh^b

Frontiers in Heat and Mass Transfer, Vol.3, No.1, pp. 1-7, 2012, DOI:10.5098/hmt.v3.1.3005

Abstract An experimental study of flow boiling through diverging microchannels has been carried out in this work, with the aim of exploring reduction in flow instabilities during boiling in diverging microchannels. Effect of mass flux, heat flux and divergence angle on two phase pressure drop has been studied using deionized water as the working fluid. The experiments are carried out on three test sections with divergence angle of 4, 8 and 12 deg with nearly constant hydraulic diameter (146, 154 and 157 µm respectively), for inlet mass flux and heat flux range of 117 - 1197 kg/m² More >