Vatech PAX-I, Руководство пользователя

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PaX-i (PCH-2500) User Manual
132
Appendices
2. MICHAEL L. TAYLOR, B.SC. TOMAS KRON, PH.D., AND RICK D. FRANICH,
PH.D.: ASSESSMENT OF OUT-OF-FIELD DOSES IN RADIOTHERAPY OF
BRAIN LESIONS IN CHILDREN, Int. J. Radiation Oncology Biol. Phys., Vol. -,
No. -, pp. 1–7, 2010
To characterize the out-of-field doses in pediatric radiotherapy and to
identify simple methods by which out-of-field dose might be minimized, with
a view to reducing the risk of secondary cancers
Out-of-field doses to pediatric patients can be minimized by using simple
treatment options, such as using the single-energy mode linear accelerator
rather than the multimode, orienting the couch and collimator such that the
patient lies along the x-plane and avoiding fields directed along the trunk of
the body
3. C. THEODORAKOU, K. HORNER, K. HOWARD, A. WALKER: Pediatric organ
and effective doses in dental cone beam computed tomography
Dental CBCT has been associated with higher radiation risk to the patients
compared to conventional dental X-Ray imaging. Several studies have
investigated the radiation doses involved in dental CBCT for adults but
none has looked into pediatric doses. This study estimates the organ
and effective doses to two pediatric tissue-equivalent phantoms using
thermoluminescent dosimeters for three dental CBCT units and six imaging
protocols. The doses to the thyroid, salivary glands and brain ranged from
0.068mSv to 1.131mSv, 0.708mSv to 2.009mSv and 0.031mSv to 1.584mSv
respectively. The skin and red bone marrow have received much lower
doses than the other three organs. The effective doses ranged from 0.022
mSv to 0.081 mSv. The effective doses calculated in this study were much
higher than these of panoramic X-Ray imaging but lower than conventional
CT
4. CHIYO YAMAUCHI-KAWAURA & KEISUKE FUJII & TAKAHIKO AOYAMA &
SHUJI KOYAMA & MASATO YAMAUCHI: Radiation dose evaluation in the
head and neck MDCT examinations with a 6-year-old child anthropomorphic
phantom, Pediatr Radiol (2010) 40:1206–1214 DOI 10.1007/s00247-009-
1495-z
Background
: CT examinations of the head and neck are the most
commonly performed CT studies in children, raising concern about radiation
dose and their risks to children.
Pi_u272_en_20180514.indd 132 2018-05-14 오전 11:03:33