Remarkable levels of radiation exposure are accumulated during repeated CT scan. However, the effects and associated risks have still remained elusive. This study presented an effective approach to quantify organ-specific radiation dose of repeated CT scans of head for patients with...
Computed Tomography (CT) scans are one of the most frequently-used imaging tools in medicine. In fact, more than 72 million scans are performed each year to diagnose various medical conditions. But public health concerns persist about radiation exposure
Ionizing radiation exposure from medical diagnostic imaging has greatly increased over the last few decades. Approximately 80% of patients who undergo medical imaging are exposed to low-dose ionizing radiation (LDIR). Although there is widespread consensus regarding the harmful effects of high doses of...
When a child needs repeated x-rays, exposure to radiation is always a concern for parents. A new study at Hospital for Special Surgery (HSS) finds that a relatively new imaging system known as EOS, which provides less radiation exposure, performed as well as conventional CT scans in assessing...
dose radiation,7 equivalent to the upper limit dose from a full-body spiral CT scan8 and 2–4 Gy as high-dose radiation that causes substantial DNA damage to cells,9,23 4 Gy is close to the LD50 for human whole-body exposure.24 Using gH2AX as a surrogate marker of DNA damage,23 ...
It has been well-established that acute radiation exposures increase the risk of leukemia. However, it is still unknown whether these leukemia risk estimates could be extrapolated to occupational populations who receive repeated low-dose radiation exposure. The purpose of this study was to estimate qu...
The x-ray exposure to patients has become a major concern in computed tomography (CT) and minimizing the radiation exposure has been one of the major efforts in the CT field. Due to plenty high-attenuation tissues in the human chest, under low-dose scan protocols, thoracic low-dose CT (LD...
In medical practice, the X-ray Computed tomography-based scans expose a high radiation dose and lead to the risk of prostate or abdomen cancers. On the other hand, the low-dose CT scan can reduce radiation exposure to the patient. But the reduced radiation dose degrades image quality for ...
The aim of our study was to assess the image quality, radiation dose, and clinical applicability of low-dose, volumetric helical CT in the evaluation of bronchiectasis. Volumetric helical CT scans (120 kVp, 3-mm collimation, pitch of 2, and reconstruction interval of 2 mm) were obtained thro...
Radiation exposure for the patient is inherent to CT technique and the related risk of cancer is of major concern. The average radiation dose of a CTCA has decreased over the years from 20-30 mSv to <3 mSv which is below the dose of nuclear cardiac imaging techniques or conventional ...