Radiology Key

(3.1) where A 0 is the initial activity. The isotopes are chosen so that their half-lives reflect the metabolic processes that are being investigated; in any case, half-lives between hours…

Fig. 9.1 The effect of X-rays 2 weeks after of a wrongly set CT perfusion scan. Photo from al.com Any program for QA in medical imaging involves measurements of radiation…

Fig. 11.1 Illustration of the PET probe principle The probe provides events of a different type, where one of the two annihilation photons interacts in the additional detector. The excellent…

Fig. 5.1 Reduction of the artifacts present around the bladder in non-TOF reconstruction. Reprinted from [1] with permission of the Society of Nuclear Medicine Current commercial TOF-PET systems partially address…

Fig. 2.1 An old image showing the distribution of function in a normal thyroid gland measured with 131I The clinical scene in nuclear medicine today is hybrid imaging. It is…

Fig. 10.1 Reconstruction of a phantom slice using two different sampling schemes which are supplementary to each other (panels (a) and (b), respectively). In the standard reconstruction, this would still…

Fig. 4.1 Example of a report page of a rest/stress myocardial perfusion study using 99mTc-sestamibi SPECT. The report shows the images reoriented according to the cardiac axis (short cardiac axis…

Fig. 12.1 Properties (resolution and sensitivity) of various medical imaging methods Although noise is a problem in all medical imaging applications, it is prominent in medical imaging using ionizing radiation…