Leukemia And Cancer Case Study

1383 Words 6 Pages
The term “leukemia” and “brain tumors” refers to a collection of neoplasms, each with its own biology, prognosis, and treatment. Leukemia is a type of cancer that affects blood cells. The cancer originates in the bone marrow where blood cells are formed (Hunger, 2015). For unknown reasons, these cells fail to develop properly into mature blood cells, and multiply at rapid rates crowding out other normal blood cells (Hunger, 2015). In the United States, acute lymphoblastic leukemia (ALL) is the most common cancer among children and the most frequent cause of death from cancer before the age of 20 (Hunger, 2015). The incidence of ALL before the age of 20 is about 30 cases per million persons, with the peak incidence occurring at 3 to 5 years …show more content…
Based on this data, the authors estimated radiation doses to the brain and red bone marrow from each CT scan by determining the scan type and the age and sex of the subjects. For example, the estimated radiation dose to the brain from one CT scan for a 5 year old male and female was 28 milligray (mGy), described using the international unit for absorbed dose mGy, 106 gray or milligray. Similarly, for a 20 year old subject the exposure to the brain was 35 mGy for males and 42 mGy for females (Pearce, 2012). Furthermore, the estimated radiation dose for a 5 year old male and female to the red bone marrow from one CT scan was 9 mGy, whereas the estimated radiation dose for a 20 year old was about 2 mGy (Pearce, 2012). The authors pointed out the dose of radiation for CT scans performed before 2001 was generally 2-3 times greater than those performed after this date because of technical advancements since then. The authors also acknowledged that previous studies have also reported a significant increase in cancer risks after CT radiation exposure of 100 mGy. Moreover, the authors primary comparison for leukemia and brain tumors was the Life Span Study of Japanese atomic bomb survivors which was the most comprehensive study of cancer after radiation exposure (Preston,

Related Documents