Ultrasonography-Ultrasonography- detection of size and shape of foetus in uterus

X-Ray Imaging methodsX-Ray Imaging methods:: Sciascopy,Sciagraphy, Sciascopy,Sciagraphy, Classical and Computer Tomography Classical and Computer Tomography

X-rays: X-rays: kind of ionizing, non-visible radiation.It is danger for living body. Max. harmless exposure is 5 mSv/ year

Definition: is elmg. waving of photoelectrons (as a visible ligh), but with very short λ = 0.05 ηm

Source: X-ray tube (diode with - Cathode and + Ano-de ). Electrons are emitted from Cathode and flight in vacuum targeting Anode. Thus, only 1-2% X- ra-ys is produced, 98% is taken away of diode as a heat.

The higher is anodal current (50-150 kV) the hardest (more penetrable) is X-ray radiation and vice ver-sa. X-ray photo is black-white.The bones and air have best contrast, soft tissues have worse or no contrast.

X-Ray Tube (DIODEX-Ray Tube (DIODE))

Sciascopy, Sciagraphy, Comp. TomographyTomography

Classical Tomography Computer Tomogr.Classical Tomography Computer Tomogr.

Computer Tomography (CTComputer Tomography (CT))