PMID- 27832459
OWN - NLM
STAT- MEDLINE
DCOM- 20170424
LR  - 20170424
IS  - 1879-5447 (Electronic)
IS  - 0158-9938 (Linking)
VI  - 40
IP  - 1
DP  - 2017 Mar
TI  - The impact of patient table on size-specific dose estimate (SSDE).
PG  - 153-158
LID - 10.1007/s13246-016-0497-z [doi]
AB  - The use of parameters water equivalent diameter (D (W) ) and size-specific dose 
      estimate (SSDE) are becoming increasingly established as a recognised method to 
      relate patient dose from a CT examination to the dose indicator volume CT dose 
      index (CTDI(VOL)). However, the role of the attenuation due to the patient table 
      in these estimations requires careful consideration and is the subject of this 
      study. The aim of this study is to investigate the impact of a minimal part of 
      the patient table when calculating the D (W) and SSDE. We investigated 164 
      patients who had undergone CT examinations for the pelvis, abdomen, thorax 
      and head. We subsequently calculated D (W) and SSDE using two methods: one using 
      a small circular region of interest (ROI) including a minimal part of the patient 
      table and the other using a ROI fitted to the patient border alone. The results 
      showed that the water equivalent diameter calculated with the table included in 
      the ROI (D (W,t) ) is greater, compared to that without the consideration of the 
      patient table (D (W,nt) ), by 1.5-6.2% depending on the anatomy being imaged. On 
      the other hand, the SSDE calculated with inclusion of the patient table (SSDE(t)) 
      is smaller than otherwise (SSDE(nt)) by 1.0-5.5% again depending on the anatomy 
      being imaged. The effect of the patient table on D (W) and SSDE in the thorax CT 
      examination was statistically significant, but its effect on D (W) and SSDE in 
      the other examinations of head, pelvis and abdomen was relatively small and not 
      statistically significant.
FAU - Anam, Choirul
AU  - Anam C
AD  - Department of Physics, Faculty of Mathematics and Natural Sciences, Diponegoro 
      University, Jl. Prof. Soedarto, SH, Tembalang, Semarang, 50275, Central Java, 
      Indonesia. anam@fisika.undip.ac.id.
AD  - Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung 
      Institute of Technology, Ganesha 10, Bandung, 40132, West Java, Indonesia. 
      anam@fisika.undip.ac.id.
FAU - Haryanto, Freddy
AU  - Haryanto F
AD  - Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung 
      Institute of Technology, Ganesha 10, Bandung, 40132, West Java, Indonesia.
FAU - Widita, Rena
AU  - Widita R
AD  - Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung 
      Institute of Technology, Ganesha 10, Bandung, 40132, West Java, Indonesia.
FAU - Arif, Idam
AU  - Arif I
AD  - Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung 
      Institute of Technology, Ganesha 10, Bandung, 40132, West Java, Indonesia.
FAU - Dougherty, Geoff
AU  - Dougherty G
AD  - Applied Physics and Medical Imaging, California State University Channel Islands 
      (CSUCI), Camarillo, CA, 93012, USA.
FAU - McLean, Donald
AU  - McLean D
AD  - Medical Physics and Radiation Engineering, The Canberra Hospital, Garran, ACT, 
      2605, Australia.
LA  - eng
PT  - Journal Article
DEP - 20161110
PL  - Netherlands
TA  - Australas Phys Eng Sci Med
JT  - Australasian physical & engineering sciences in medicine
JID - 8208130
RN  - 059QF0KO0R (Water)
SB  - IM
MH  - Adult
MH  - Aged
MH  - Aged, 80 and over
MH  - Dose-Response Relationship, Radiation
MH  - Female
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - Organ Specificity
MH  - *Radiation Dosage
MH  - Tomography, X-Ray Computed
MH  - Water
OTO - NOTNLM
OT  - Patient dose
OT  - Patient table
OT  - Size-specific dose estimates (SSDE)
OT  - Volume CT dose index (CTDIVOL)
OT  - Water equivalent diameter (D W )
EDAT- 2016/11/11 06:00
MHDA- 2017/04/25 06:00
CRDT- 2016/11/11 06:00
PHST- 2016/04/09 00:00 [received]
PHST- 2016/10/29 00:00 [accepted]
PHST- 2016/11/11 06:00 [pubmed]
PHST- 2017/04/25 06:00 [medline]
PHST- 2016/11/11 06:00 [entrez]
AID - 10.1007/s13246-016-0497-z [pii]
AID - 10.1007/s13246-016-0497-z [doi]
PST - ppublish
SO  - Australas Phys Eng Sci Med. 2017 Mar;40(1):153-158. doi: 
      10.1007/s13246-016-0497-z. Epub 2016 Nov 10.