One of the biggest problems of our planet is the greenhouse effect. Animals and its effects on agriculture are frightening, and the human populations and more terrible. Greenhouse gases in the atmosphere can be a few years to several decades, hundreds or even thousands of years. Whatever happens, global warming will affect Earth. Some of the effects caused by global warming are:


Spread of disease. After warming the Nordic countries, diseases carried by insects migrate north, bringing plague and disease with them. Scientists believe that in some countries due to global warming, malaria has not been completely exterminated.

High probability of drought and high heat waves. Although some areas of Earth will become wetter due to global warming, other areas will suffer great droughts and heat waves. Droughts will be the largest in Africa, but they are expected in Europe facts. Water in Africa is already very hard to find, and according to the Intergovernmental Panel dealing with climate change, global warming will destroy the living conditions, which could lead to conflicts and even war. After some recent research, 90% there is a chance that 3 billion people worldwide having to choose between family moved to areas with milder climatic conditions or starvation due to climate change in the next 100 years.

Increasing temperatures and changing landscapes of the Arctic circle will endanger several species of animal facts. Only those who adapt will survive. According to an article published in Nature, 2050, increased temperature could lead to extinction of up to one million species. And we can not exist without diversity of species on Earth, this is scary for people.

Another effect of melting ice is unbalanced global ecosystem. Of water caps water is and if it would melt or desalinate ocean would make it less salty bay desalination currents will change and ocean currents, which regulate the temperature. The lack of currents or their iregularizarea would cool the north-east America and Eastern Europe. This will slow down but other effects of global warming in those areas

Designul actual al CyberKnife ® Sistem Robotic Radiochirurgia consta din trei componente cheie: 1) un sistem avansat, usor accelerator liniar (LINAC) (acest dispozitiv este utilizat pentru a produce o energie de Inalta (6MV) "fascicul de ucidere" de radiatii), 2) un robot care poate punctul accelerator linear la o mare varietate de unghiuri, si 3) de mai multe x-ray camere (dispozitive de imagistica), care sunt combinate cu software-ul puternic pentru a urmari pozitia pacientului si tumorii. Camere cu raze X a obtine imagini frecventa a pacientului In timpul tratamentului, si de a folosi aceste informatii pentru a-tinta fascicul de radiatii emise de accelerator linear.

Robotul este instrumental In scopul exact acest aparat. Când un pacient se deplaseaza In timpul tratamentului, schimbarea pozitiei este detectat de catre camerele de x-ray, iar robotul compenseaza prin re-orientare accelerator linear Inainte de administrarea fasciculul de radiatii. Acest proces continuu de detectarea si corectarea asigura radiatii precise de directionare pe tot parcursul tratamentului.

Precizia de tratament este, probabil, caracteristica cea mai importanta definirea de radiosurgery. In consecinta, metoda de directionare utilizate de CyberKnife reprezinta un progres major fata de instrumentele de mai mari cadru pe baza de radiosurgical.

Prin folosirea imaginilor digitale radiografice de caracteristici anatomice sau fiducials implantat pentru a localiza pozitia a unei tumori, CyberKnife elimina necesitatea pentru un cadru stereotactica. Desi fara rama si, prin urmare, non-invazive, precizia CyberKnife este comparabila, daca nu superior cadrul sistemelor bazate pe.

Intr-un manuscris publicat (Yu, C, W principal, Taylor D, G Kuduvalli, Apuzzo M, J Adler, Wang M:. Un studiu antropomorfa Fantoma de la Precizia Radiochirurgia CyberKnife coloanei vertebrale Neurochirurgie, 55 (5) :1138-1149, 2004) au aratat eroarea medie relevante clinic, masurata la trei facilitati CyberKnife diferite, a fost determinata sa fie 0.7 + 0,3 mm, care nu varia In functie de grosime felie calculat tomographic Intr-o gama de 0.625 - 1.5 mm. Precizie medie de tratament de livrare a fost de 0,3 + 0,1 mm. Eroare de urmarire fiduciar a fost mai mica de 0,3 mm pentru traduceri radiale de pâna la 14 mm si mai mica de 0,7 mm pentru rotatii de pâna la 4,5 grade.