Introduction to Medical Physics
الكتاب المقررMedical physics By John R .Cameron
Medical Physicsis the application of the concept of physics in medicine
Aims of the Medical physics
Application of the concepts and methods of physics to understanding the function of human body in health and diseaseMedical Physics
1 .Physics of the bodyis to understanding physical aspect of the body
such as ; forces on and in the body , work , energy ,power of the body, heat ,blood flow , respiration , electricity , ,circulation, and hearing.
2.Application of physics in medicine
Medical physics Techniques are used for a. Diagnostic : Stethoscope Manometer (blood pressure ) Sphygmomanometer Electrocardiograph(ECG), X- Ray,Computer tomography (CT scan ) , Ultrasound , tuning Fork, Magnetic Resonance Imaging (MRI), Flow meter , Spirometer to study the function lungs, Audiometer, Optics, Laser, Gamma camera to study the function of kidney ,liver ,and lungs .
b. Therapy
Radiotherapy Cobalt sixty( Co sixty ) High voltage Ultrasound infrared Radio frequency Heating Laserc. Patient monitoring
ECG , spirometer , blood pressure ,and thermometer .SI Unit
SI units(Standard units): Two types of SI units 1.Physical unit a. MKS system M = meter K = Kilogram S = Secondb. CGS system C = centimeter G = gram S = second
2 .Physiological unit In medicine it is often convenient to measure quantities in nonstandard units. For example :the physical units of pressure is Newtons per square meter , Physiological unit of blood pressure is expressed in millimeter of mercury (mm Hg)