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PURPOSE Standard cystectomy for bladder cancer in males and females includes removal of organs that are vital to normal sexual function. We report the initial results of modified cystectomy in males and females meant to preserve all sexual function, called sexuality preserving cystectomy and neobladder. MATERIALS AND METHODS Sexuality preserving(More)
Bellini Duct Carcinoma (BDC) or collecting duct carcinoma is a rare but very aggressive renal neoplasm which originates from the epithelium of the ducts of Bellini in the distal tubule. This tumour often occurs in a young population and has a bad prognosis. Histomorphological differentiation from the more common renal cell carcinoma of the proximal tubuli(More)
Urachal carcinoma of the bladder is a very rare tumor which has to be differentiated from primary adenocarcinoma of the urinary bladder. The treatment of choice is extended partial cystectomy with inclusion of the umbilicus and the peritoneum. Symptoms occur late and the diagnosis has to be made by preoperative transurethral biopsy. We herein report on 3(More)
We study the diffuse transport of light through polymer slabs containing TiO(2) scattering particles. The slabs are diffuser plates typical of a commercial white light-emitting diode (LED) module (Fortimo). We have measured the diffuse transmission and reflection properties over a broad wavelength range (470-840 nm) from which we derive the transport mean(More)
In this article an analogy between temperature-dependent and concentration-dependent bacterial killing is described. The validation process of autoclaves uses parameters such as reduction rate constant k, decimal reduction time D and resistance coefficient z from an imaginary microorganism to describe the sterilization process. Total lethality of the(More)
We study light transport in phosphor plates of white light-emitting diodes (LEDs). We measure the broadband diffuse transmission through phosphor plates of varying YAG:Ce(3+) density. We distinguish the spectral ranges where absorption, scattering, and re-emission dominate. Using diffusion theory, we derive the transport and absorption mean free paths from(More)
Ray tracing is a forward method to calculate the photometric variables at the target of a non-imaging optical system. In this paper, a new ray tracing technique is presented to improve the accuracy and to reduce the computational time of the classical ray tracing approach. The method is based on the phase space representation of the source and the target of(More)
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