and catastrophes
Maintenance and catastrophes It is important to bear in mind that not all aspects of equipment performance can be maintained. Catastrophes are inevitable and these are usually exhibited by component…
in the treatment of thyroid disease
4–6] from the Royal College of Physicians (RCP) in the UK, as well as from Europe and the USA for using radioiodine in the management of hyperthyroidism and of thyroid…
ionization chamber
Figure 3.5. The cap is generally made of a low atomic number low-density material such as graphite, although various plastic materials have been used where the plastic has been manufactured…
emission tomography scanners
Figure 6.3) are designed specifically for radionuclides that decay by positron emission. Scintillator crystals with high stopping power are utilized, examples are bismuth germanate (BGO) and lutetium orthosilicate (LSO). These…
Introduction
Table 1.1). The atomic nucleus therefore occupies a minute fraction (10−10 %) of the atomic volume, yet contains more than 99.9% of the atom’s mass. Electrons and protons each carry…
position and dose
Safety, position and dose There are two aspects to dose delivery. First, the physical amount of dose and, secondly, is it in the correct position. Both aspects are significant and,…
commitment to quality control
13]. An underdose may well go on for a much longer period of time and the incident at Stoke [14], when an underdose of approximately 20% continued for several years,…
Quality control
General A commitment to quality control Safety, position and dose Frequency, tolerances and failure trends Measurement and uncertainty Null hypothesis Combining variances and tolerances Setting a tolerance to account for…
