This Link Contain CT Physics Videos

https://www.youtube.com/channel/UCy_LRe_O8OFuxF6ZrFEwFtg?view_as=subscriber

Comments

Post a Comment

Popular posts from this blog

Image
The physics of Nuclear Imaging part 1 Outlines: 1-Radiopharmaceuticals 2-Radiopharmaceutical QC 3-Dose Calibrator QC   1-Radiopharmaceuticals: ·        Definition: Radiopharmaceuticals consist of a radioactive isotope, which creates the image, and a pharmaceutical, which determines the physiological behavior of the compound and, therefore, where the signal accumulates to form the image. ·        Properties of ideal radiopharmaceuticals: 1.      Easily and firmly attached to the pharmaceutical at room temperature but has no effect on its metabolism. 2.      Readily available at the hospital site. 3.      A high-specific activity 4.      High target: non-target uptake ratio 5.      Easy and cheap to produce 6.      Non-toxic 7.      Does not alter physiolog...
Read more

Dose Calibrator Quality Control in Nuclear Medicine

Image
السلام عليكم الناهرده هاتكمل عن اذاى تخبر ال   Dose calibrator  فى المعمل وتتاكد من كفائته وده هايتم عن طريق الاختبارات التاليه :- 1.       Accuracy at installation :- 2.       Constancy daily test 3.       Linearity 4.       Geometry at installation Accuracy at installation 1-      انا عايز اتاكدان ال dose calibrator قرائته سليمه فبالتالى محتاج مصدر معلوم القوه الاشعاعيه مثل ( (57Co, 133Ba and 137Cs ويكون له long half live  وابتدى احسب القوه الاشعاعيه للمصدر فى تاريخ القياس بمعلومية نشاطه الاشعاعى فى تاريخ سابق يبقى انا كده عندى ال original activity( A0) ومحتاج احسب النشاط الاشعاعى عند زمن القياس A(t) وممكن تستخدم المعادلات التاليه :- A(t)=A(0)/2*n n = (no of days left from the activity measurment day) /T 1/2 2-      يمك...
Read more
Image
 • Fourier transformation • French mathematician Joseph Fourier discovered the Greenhouse effect. He explained how combining a variety of various-sized sine waves might result in any sort of wave imaginable. This is important for our needs since we may employ certain sine waves (produced by analog devices) to generate digital readouts. • Fourier analysis: Identifying the sine waves that make up a specific signal (think of it as reverse engineering soup - identifying all the ingredients, types, and amounts from a sample of the finished soup). • Fourier transform The process of converting from the frequency domain to the spatial domain (distance or time) or vice versa. The spatial domain contains all of the sine waves, but the frequency domain has only one. • Aliasing Aliasing is a 'undersampling' problem. It is the phrase used to describe the visual confusion that occurs when a real thing is seen erroneously. A real-life example would be watching a spinning wheel (or the rotor b...
Read more