10: ATELECTASIS AND COLLAPSE
Even in patients who are on mechanical ventilation, obstructive atelectasis can occur very rapidly. One theory is that highly oxygenated air, as opposed to normal ambient air, is…
9: PULMONARY EMBOLUS
This is due to an area of pulmonary infarction secondary to the embolis. Remember, many cases of pulmonary emboli do not produce associated infarction. Effusions occur in about…
2: PORTABLE CHEST TECHNIQUE IN THE ICU
A team approach is needed to obtain a portable chest radiograph, and the team should include technologists, radiologists, and ICU personnel. There should be close cooperation between ICU…
BIBLIOGRAPHY
BIBLIOGRAPHY 1. Marik PE, Janower NL. The impact of routine chest radiography on ICU management decisions: An observational study. Am J Crit Care 1997;6:95–98. 2. Strain DS, Kinasewitz…
3: APPROACH TO READING A PORTABLE CHEST RADIOGRAPH
Next, the reader must determine whether the film is adequately exposed. Underpenetration can increase or even create the appearance of alveolar densities, and overpenetration can burn through similar…
1: INTRODUCTION
CHAPTER 1 INTRODUCTION Patients in the ICU are the most critically ill patients in the hospital. They are usually supported by many different types of mechanical devices and…
arrangements
Table 10.2 shows typical values for commonly used energies). Low energy beams, e.g. 4–6 MV are suited to more superficial volumes, e.g. head and neck PTVs, while deep pelvic PTVs will…
tolerances and failure trends
Figure 13.2 illustrates such a change in performance with time. Figure 13.2 Change in performance represented by a linear change of a parameter over a time period t after which…
