PMID- 33454459
OWN - NLM
STAT- MEDLINE
DCOM- 20210414
LR  - 20210414
IS  - 1872-7727 (Electronic)
IS  - 0720-048X (Linking)
VI  - 136
DP  - 2021 Mar
TI  - Radiation dose reduction, improved isocenter accuracy and CT scan time savings 
      with automatic patient positioning by a 3D camera.
PG  - 109537
LID - S0720-048X(21)00017-6 [pii]
LID - 10.1016/j.ejrad.2021.109537 [doi]
AB  - PURPOSE: To compare CT isocenter accuracy, patient dose, and scan time in adults 
      imaged with and without use of a 3D camera. METHOD: 571 CT examinations utilizing 
      a 3D camera for initial patient positioning (optional radiographer isocenter 
      adjustment) and 504 examinations scanned without the camera between 10/1/2018 and 
      3/19/2019 were retrospectively identified. All exams were chest or abdominopelvic 
      CTs. The isocenters of these exams were compared with the true isocenters defined 
      as the manually delineated centroid of the body in the CT volume. The size 
      specific dose estimate (SSDE) (mGy) of radiation dose obtained from departmental 
      software for the 4 most common protocols on one CT scanner was compared before 
      and after implementation of the 3D camera. The times required for the entire scan 
      and just the topogram "scout" were compared with and without the 3D camera for 
      noncontrast chest and abdominopelvic CT enterography protocols. 2-tailed t-tests 
      and Mann-Whitney U tests were used (P < 0.05 indicated statistical significance). 
      RESULTS: The deviation from true isocenter was 6.8 +/- 6.1 mm (P = 0.043) and 
      16.3 +/- 14.0 mm (P < 0.01) with and without the 3D camera, respectively 
      (P < 0.01). CT radiographers accepted isocenter location without alteration in 93 
      % of examinations. Average SSDE savings with the 3D camera ranged 1.0-2.4 mGy 
      (21-31 %) for the 4 most commonly performed protocols (p < 0.01). Median scout 
      time savings was 32 s (Camera vs. No-Camera cohorts) (P < 0.01). Average 
      noncontrast chest CT and CT enterography scan time savings were 19 s and 17 s 
      with the 3D camera, respectively (P < 0.01). CONCLUSIONS: The 3D camera improved 
      accuracy of patient positioning while reducing radiation dose and examination 
      time. Implementation of a 3D camera helps standardize workflow in a busy clinical 
      practice.
CI  - Copyright (c) 2021 Elsevier B.V. All rights reserved.
FAU - Dane, Bari
AU  - Dane B
AD  - NYU Langone Health, Department of Radiology, New York, NY, 10016, United States. 
      Electronic address: bari.dane@nyulangone.org.
FAU - O'Donnell, Thomas
AU  - O'Donnell T
AD  - Siemens Healthineers, 40 Liberty Blvd, Malvern, PA, 19355, United States. 
      Electronic address: Tom.ODonnell@siemens-healthineers.com.
FAU - Liu, Shu
AU  - Liu S
AD  - NYU Langone Health, Department of Radiology, New York, NY, 10016, United States. 
      Electronic address: Shu.Liu@nyulangone.org.
FAU - Vega, Emilio
AU  - Vega E
AD  - NYU Langone Health, Department of Radiology, New York, NY, 10016, United States. 
      Electronic address: Emilio.Vega@nyulangone.org.
FAU - Mohammed, Sharon
AU  - Mohammed S
AD  - NYU Langone Health, Department of Radiology, New York, NY, 10016, United States. 
      Electronic address: Sharon.Mohammed@nyulangone.org.
FAU - Singh, Vivek
AU  - Singh V
AD  - Siemens Healthineers, 40 Liberty Blvd, Malvern, PA, 19355, United States. 
      Electronic address: Vivek-Singh@siemens-healthineers.com.
FAU - Kapoor, Ankur
AU  - Kapoor A
AD  - Siemens Healthineers, 40 Liberty Blvd, Malvern, PA, 19355, United States. 
      Electronic address: Ankur.kapoor@siemens-healthineers.com.
FAU - Megibow, Alec
AU  - Megibow A
AD  - NYU Langone Health, Department of Radiology, New York, NY, 10016, United States. 
      Electronic address: Alec.Megibow@nyulangone.org.
LA  - eng
PT  - Journal Article
DEP - 20210112
PL  - Ireland
TA  - Eur J Radiol
JT  - European journal of radiology
JID - 8106411
SB  - IM
MH  - Adult
MH  - *Drug Tapering
MH  - Humans
MH  - Patient Positioning
MH  - Radiation Dosage
MH  - Retrospective Studies
MH  - *Tomography, X-Ray Computed
OTO - NOTNLM
OT  - Automation
OT  - Computed tomography
OT  - Deep learning
OT  - Patient positioning
OT  - Tomography
OT  - X-Ray computed
EDAT- 2021/01/18 06:00
MHDA- 2021/04/15 06:00
CRDT- 2021/01/17 20:26
PHST- 2020/09/03 00:00 [received]
PHST- 2020/12/25 00:00 [revised]
PHST- 2021/01/08 00:00 [accepted]
PHST- 2021/01/18 06:00 [pubmed]
PHST- 2021/04/15 06:00 [medline]
PHST- 2021/01/17 20:26 [entrez]
AID - S0720-048X(21)00017-6 [pii]
AID - 10.1016/j.ejrad.2021.109537 [doi]
PST - ppublish
SO  - Eur J Radiol. 2021 Mar;136:109537. doi: 10.1016/j.ejrad.2021.109537. Epub 2021 
      Jan 12.