PMID- 35984837
OWN - NLM
STAT- MEDLINE
DCOM- 20220823
LR  - 20220908
IS  - 1932-6203 (Electronic)
IS  - 1932-6203 (Linking)
VI  - 17
IP  - 8
DP  - 2022
TI  - Effect of technologist and patient attributes on centering for body CT 
      examinations: Influence of cultural and ethnic factors.
PG  - e0273227
LID - 10.1371/journal.pone.0273227 [doi]
LID - e0273227
AB  - There are no published data on the effect of patient and technologist gender and 
      ethnicity attributes on off-centering in CT. Therefore, we assessed the impact of 
      patient and technologist variations on off-centering patients undergoing body CT. 
      With institutional review board approval, our retrospective study included 1000 
      consecutive adult patients (age ranged 22-96 years; 756 males: 244 females) who 
      underwent chest or abdomen CT examinations. We recorded patient (age, gender, 
      nationality, body weight, height,), technologist gender, and scan-related 
      (scanner vendor, body region imaged, scan length, CT dose index volume, dose 
      length product) information. Lateral and anteroposterior (AP) diameters were 
      recorded to calculate effective diameter and size-specific dose estimate (SSDE). 
      Off-centering represented the distance between the anterior-posterior centers of 
      the scan field of view and the patient at the level of carina (for chest CT) and 
      iliac crest (for abdomen CT). About 76% of the patients (760/1000) were 
      off-centered with greater off-centering for chest (22 mm) than for abdomen (15 
      mm). Although ethnicity or patient gender was not a significant determinant of 
      off-centering, technologist-patient gender mismatch was associated with a 
      significantly greater frequency of off-centering (p<0.001). Off-centering below 
      the gantry isocenter was twice as common as off-centering above the gantry 
      isocenter (p<0.001). The latter occurred more frequently in larger patients and 
      was associated with higher radiation doses than those centered below the 
      isocenter (p<0.001). Technologists' years of experience and patient factors 
      profoundly affect the presence and extent of off-centering for both chest and 
      abdomen CTs. Larger patients are more often off-centered than smaller patients.
FAU - Aly, Antar
AU  - Aly A
AUID- ORCID: 0000-0002-2325-6610
AD  - Hamad Medical Corporation, Doha, Qatar.
FAU - Ebrahimian, Shadi
AU  - Ebrahimian S
AD  - Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 
      Boston, Massachusetts, United States of America.
FAU - Kharita, Mohammed H
AU  - Kharita MH
AD  - Hamad Medical Corporation, Doha, Qatar.
FAU - Heidous, Mahmoud
AU  - Heidous M
AD  - Hamad Medical Corporation, Doha, Qatar.
FAU - Ashruf, Mohammad Zaya
AU  - Ashruf MZ
AD  - Hamad Medical Corporation, Doha, Qatar.
FAU - Kumar, Davendra
AU  - Kumar D
AD  - Hamad Medical Corporation, Doha, Qatar.
FAU - Kalra, Mannudeep K
AU  - Kalra MK
AD  - Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 
      Boston, Massachusetts, United States of America.
FAU - Al Naemi, Huda Mohd
AU  - Al Naemi HM
AD  - Hamad Medical Corporation, Doha, Qatar.
LA  - eng
PT  - Journal Article
DEP - 20220819
PL  - United States
TA  - PLoS One
JT  - PloS one
JID - 101285081
SB  - IM
MH  - Adult
MH  - Aged
MH  - Aged, 80 and over
MH  - *Ethnicity
MH  - Female
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - *Patient Positioning
MH  - Radiation Dosage
MH  - Retrospective Studies
MH  - Tomography, X-Ray Computed/methods
MH  - Young Adult
PMC - PMC9390905
COIS- A study coauthor (Mannudeep K. Kalra) received research grants from Siemens 
      Healthineers, Riverain Tech, and Coreline Inc. for unrelated projects. None of 
      the authors have any pertinent financial disclosures related to the submitted 
      work. This does not alter our adherence to PLOS ONE policies on sharing data and 
      materials.
EDAT- 2022/08/20 06:00
MHDA- 2022/08/24 06:00
PMCR- 2022/08/19
CRDT- 2022/08/19 13:35
PHST- 2022/02/07 00:00 [received]
PHST- 2022/07/21 00:00 [accepted]
PHST- 2022/08/19 13:35 [entrez]
PHST- 2022/08/20 06:00 [pubmed]
PHST- 2022/08/24 06:00 [medline]
PHST- 2022/08/19 00:00 [pmc-release]
AID - PONE-D-22-02091 [pii]
AID - 10.1371/journal.pone.0273227 [doi]
PST - epublish
SO  - PLoS One. 2022 Aug 19;17(8):e0273227. doi: 10.1371/journal.pone.0273227. 
      eCollection 2022.