Radiation exposures of cancer patients from medical X-rays: How relevant are they for individual patients and population exposure?

Temporal trends in the use of diagnostic imaging for inpatients with pancreatic conditions: How much ionizing radiation are we using?

“…The effective dose of 40 mSv among patients with acute pancreatitis 1 is identical to that reported for patients with pancreatic cancer during their first year (40.1 mSv). 6 Unfortunately, patients with pancreatic cancer have substantially shorter life expectancy as evidenced by an overall 5-year exposure of only 68.8 mSv per patient. 6 Given the known challenge of recovering well enough from postoperative complications to receive adjuvant chemotherapy, it can easily be argued that the radiation exposure associated with multiple CT scans in this scenario is irrelevant from a stochastic standpoint.…”

“…6 Unfortunately, patients with pancreatic cancer have substantially shorter life expectancy as evidenced by an overall 5-year exposure of only 68.8 mSv per patient. 6 Given the known challenge of recovering well enough from postoperative complications to receive adjuvant chemotherapy, it can easily be argued that the radiation exposure associated with multiple CT scans in this scenario is irrelevant from a stochastic standpoint. When this concept is applied to our data set, the observed reduction in CT imaging over the study interval would have resulted in a theoretical reduction in the absolute number of patients who developed a radiation-induced fatal cancer per year of 3 for acute pancreatitis and 1 for both chronic pancreatitis and pancreatic neoplasia.…”

“…In addition to the inherent risk of contrast-associated nephropathy, CT imaging exposes patients to a measurable dose of ionizing radiation. [3][4][5][6] Considering the frequent need for multiple CT scans during the course of their inpatient care (i.e., necrotizing pancreatitis or postoperative complications after pancreatic procedures), a patient's radiation exposure can be substantial. The increasing use of CT imaging [7][8][9][10][11][12] coupled to the growing incidence of both pancreatitis [13][14][15][16][17] and pancreatic tumours (i.e., intraductal papillary mucinous neoplasm [IPMN]), makes this public health issue especially topical.…”

Towards the clinical implementation of iterative low‐dose cone‐beam CT reconstruction in image‐guided radiation therapy: Cone/ring artifact correction and multiple GPU implementation

“…In IGRT, CBCT imaging is repeatedly applied to a patient during the treatment course, leading to a clinical concern of excessive imaging dose. [4][5][6] IR algorithms, especially compressed sensing (CS)-based algorithms, have been shown to be capable of reconstructing CBCT images from noisy and undersampled x-ray projections, hence considerably reducing radiation dose during the CBCT scan.…”

The impact of an acute care surgery clinical care pathway for suspected appendicitis on the use of CT in the emergency department

“…[7][8][9][10][11][12] This change has also led to a nearly 6-fold increase in the per capita radiation exposure from medical imaging. [13][14][15][16] The primary goal of this study was therefore to evaluate the impact of implementing an ACS clinical care pathway dedicated to suspected appendicitis on the timing and use of CT and on patient flow through the emergency department (ED). The secondary objective was to compare patientrelated variables among 3 ACS-equipped medical centres within the Calgary region of Alberta Health Services.…”