background: in order to improve the evaluation of possible rectal toxicity based on the rectal normal tissue complication probability (ntcp), we consider the fractional dependence of the ntcp on the wall thickness (tw) and rectal displacement (rm). materials and methods: the two-dimensional ntcp model (ntcp2d) was developed using radiotherapy plans of ten randomly selected patients with prostat...

AIMS AND OBJECTIVES Aims and objectives of this study are to get the best fit of the normal tissue tolerance doses to the NTCP model of the linear quadratic model. METHODS AND MATERIALS To compute the NTCP, the modified form of the Poisson cell kill model of NTCP, based on linear-quadratic model, is used. The model has been applied to compute the parameters of the NTCP model using clinical to...

background: tissue expanders are devices which are used to create enough skin to form suitable flap in restoration of great skin deficiencies which are not modified initially. the current study aimed at investigating the patients’ satisfaction and the complications such as rupture, hematoma, wound infection, seroma, leakage, chronic pain, and expander expose of internal (implanted under the ski...

introduction: high prevalence of rhinoplasty in the community and lack of structured studies about its minor skin and soft tissue complications, point out the necessity of performing precise and comprehensive studies. the aim of this study was to determine the frequency of minor cutaneous and soft tissue complications of rhinoplasty.  materials and methods: 110 patients (30 male and 80 female, ...

PurposeCurative radiotherapy for nasopharyngeal carcinoma (NPC) can lead to acquired nasal cavity stenosis and atresia (ANCSA). As the first study investigate risk factors of ANCSA in a large cohort NPC patients, this article aims develop validate multivariate normal tissue complication probability (NTCP) model predict development establish nomogram clinical use.Methods materialsThe retrospecti...