PMID- 27718079
OWN - NLM
STAT- MEDLINE
DCOM- 20180102
LR  - 20200330
IS  - 1432-1084 (Electronic)
IS  - 0938-7994 (Linking)
VI  - 27
IP  - 6
DP  - 2017 Jun
TI  - Breast dose reduction for chest CT by modifying the scanning parameters based on 
      the pre-scan size-specific dose estimate (SSDE).
PG  - 2267-2274
LID - 10.1007/s00330-016-4618-6 [doi]
AB  - OBJECTIVE: To investigate the usefulness of modifying scanning parameters based 
      on the size-specific dose estimate (SSDE) for a breast-dose reduction for chest 
      CT. MATERIALS AND METHODS: We scanned 26 women with a fixed volume CT dose index 
      (CTDI(vol)) (15 mGy) and another 26 with a fixed SSDE (15 mGy) protocol (protocol 
      1 and 2, respectively). In protocol 2, tube current was calculated based on the 
      patient habitus obtained on scout images. We compared the mean breast dose and 
      the inter-patient breast dose variability and performed linear regression 
      analysis of the breast dose and the body mass index (BMI) of the two protocols. 
      RESULTS: The mean breast dose was about 35 % lower under protocol 2 than protocol 
      1 (10.9 mGy vs. 16.8 mGy, p < 0.01). The inter-patient breast dose variability 
      was significantly lower under protocol 2 than 1 (1.2 mGy vs. 2.5 mGy, p < 0.01). 
      We observed a moderate negative correlation between the breast dose and the BMI 
      under protocol 1 (r = 0.43, p < 0.01); there was no significant correlation 
      (r = 0.06, p = 0.35) under protocol 2. CONCLUSION: The SSDE-based protocol 
      achieved a reduction in breast dose and in inter-patient breast dose variability. 
      KEY POINTS: * CT scan parameters can be modified based on the pre-scan SSDE. * 
      The pre-scan SSDE is useful for a breast dose reduction. * The fixed SSDE 
      protocol reduced individual variations in the breast dose.
FAU - Kidoh, Masafumi
AU  - Kidoh M
AD  - Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto 
      University, 1-1-1, Honjo, Kumamoto, 860-8556, Japan. masafkidoh@yahoo.co.jp.
FAU - Utsunomiya, Daisuke
AU  - Utsunomiya D
AD  - Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto 
      University, 1-1-1, Honjo, Kumamoto, 860-8556, Japan.
FAU - Oda, Seitaro
AU  - Oda S
AD  - Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto 
      University, 1-1-1, Honjo, Kumamoto, 860-8556, Japan.
FAU - Nakaura, Takeshi
AU  - Nakaura T
AD  - Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto 
      University, 1-1-1, Honjo, Kumamoto, 860-8556, Japan.
FAU - Funama, Yoshinori
AU  - Funama Y
AD  - Department of Medical Physics, Faculty of Life Sciences, Kumamoto University, 
      1-1-1, Honjo, Kumamoto, 860-8556, Japan.
FAU - Yuki, Hideaki
AU  - Yuki H
AD  - Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto 
      University, 1-1-1, Honjo, Kumamoto, 860-8556, Japan.
FAU - Hirata, Kenichiro
AU  - Hirata K
AD  - Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto 
      University, 1-1-1, Honjo, Kumamoto, 860-8556, Japan.
FAU - Namimoto, Tomohiro
AU  - Namimoto T
AD  - Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto 
      University, 1-1-1, Honjo, Kumamoto, 860-8556, Japan.
FAU - Sakabe, Daisuke
AU  - Sakabe D
AD  - Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto 
      University, 1-1-1, Honjo, Kumamoto, 860-8556, Japan.
FAU - Hatemura, Masahiro
AU  - Hatemura M
AD  - Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto 
      University, 1-1-1, Honjo, Kumamoto, 860-8556, Japan.
FAU - Yamashita, Yasuyuki
AU  - Yamashita Y
AD  - Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto 
      University, 1-1-1, Honjo, Kumamoto, 860-8556, Japan.
LA  - eng
PT  - Journal Article
PT  - Randomized Controlled Trial
DEP - 20161007
PL  - Germany
TA  - Eur Radiol
JT  - European radiology
JID - 9114774
SB  - IM
MH  - Body Mass Index
MH  - Breast/*radiation effects
MH  - Female
MH  - Humans
MH  - Linear Models
MH  - Middle Aged
MH  - Prospective Studies
MH  - Radiation Dosage
MH  - Radiography, Thoracic/*radiation effects
MH  - Radionuclide Imaging
MH  - Tomography, X-Ray Computed/methods
OTO - NOTNLM
OT  - Breast radiation dose
OT  - CTDIvol
OT  - Chest CT
OT  - MOSFET
OT  - SSDE
EDAT- 2016/10/09 06:00
MHDA- 2018/01/03 06:00
CRDT- 2016/10/09 06:00
PHST- 2016/05/25 00:00 [received]
PHST- 2016/09/22 00:00 [accepted]
PHST- 2016/09/12 00:00 [revised]
PHST- 2016/10/09 06:00 [pubmed]
PHST- 2018/01/03 06:00 [medline]
PHST- 2016/10/09 06:00 [entrez]
AID - 10.1007/s00330-016-4618-6 [pii]
AID - 10.1007/s00330-016-4618-6 [doi]
PST - ppublish
SO  - Eur Radiol. 2017 Jun;27(6):2267-2274. doi: 10.1007/s00330-016-4618-6. Epub 2016 
      Oct 7.