The mean SSDE, [CTDI.sub.vol], CNR, and SNR were compared between SECT and DECT of the chest: for patients with BMI .25 kg/[m.sub.2], SSDE was 11.8[+ or -]1.4
mGy vs.
According to the radiation dosage measured by five dosimeters, which ranged from 0.052 to 0.176
mGy in one irradiation fraction (Figure 2(c)), the fetal dose was estimated as 1.56 to 5.28
mGy, even after 60 Gy in 30 fractions of radiotherapy.
In the process, 10 TLDs were used for each configuration of 0.5
mGy, 1
mGy, 2
mGy, 5
mGy, and 10
mGy.
Wykazaly one, ze dawka wejsciowa wynosila 7,9-307
mGy w roku 1976, a 0,9-87,7
mGy w roku 1990.
A significant reduction in dosage (6.64
mGy versus 2.88
mGy) without any impact on the imaging quality was apparent (group 1: 1.25 versus group 2: 1.17; p = 0.001).
The highest median radiation doses were noted in patients being followed-up for intracranial abscesses (1183
mGy cm) in the 8-12 year age group, most of whom were female.
The building is currently experiencing a 49% reduction in potable water use over a building of a similar design, or roughly 5.5 million gallons a year (
MGY).
The cases that the patients were restrained by the medical staff members were made into "movement (+)." The patient's skin entrance dose (in
mGy), as calculated by the fluoroscopy generator with the numerical dose determination (NDD) method [10], was used to represent the radiation dose from the X-ray fluoroscopy generator.
Studies through the gravid uterus, such as radiographs of the abdomen and lumbar spine, result in a fetal dose of 1
mGy to 3.5
mGy.
In this interval, the material components received the radiation of the total absorbed dose in the amount of [D.sub.tot] = 229.71
mGy (13.714 mGy/hr x 16.75 hr), and respectively, the total equivalent dose [H.sub.tot] = 402 mSv (24 mSv/hr x 16.75 hr).
The only theoretical risk from in-utero radiation of 0.11--0.22
mGy is induction of malignancy, the estimated incidence of which is 1:16,000 per
mGy of dose given (Sharp, Shrimpton & Bury, 1998).
For 5 weeks, mice were irradiated continuously with 35.5 keV X-rays produced by the decay of iodine-125, yielding an accumulated dose of 105
mGy. The observed effects were compared with those from acute irradiation by X-ray machine at 1,700 mGy/day up to the same accumulated dose.
