The Pelvic Inlet and Outlet Radiographic View in Filipinos: A Retrospective Study of CT Scan Measurements and 3-Dimensional Computed Tomography Reconstructions

John Ricardo Buenacosa Chua; Joshua De Castro Unsay

doi:doi:10.11648/j.ijmi.20221002.12

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The Pelvic Inlet and Outlet Radiographic View in Filipinos: A Retrospective Study of CT Scan Measurements and 3-Dimensional Computed Tomography Reconstructions

John Ricardo Buenacosa Chua, Joshua De Castro Unsay

Published in International Journal of Medical Imaging (Volume 10, Issue 2)

Received: 29 April 2022 Accepted: 12 May 2022 Published: 19 May 2022

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Abstract

Injuries to the pelvic ring pose a significant challenge requiring urgent multidisciplinary management. Adequate radiological evaluation is essential in assessing these injuries. The standard radiologic evaluation of the pelvis includes an AP, inlet, and outlet view. The inlet and outlet view are classically taught to be orthogonally taken with a 45-degree angulation from the anteroposterior plane. However, there is growing evidence that there is a significant individual variation within the population and these values need to be re-analyzed. This is a retrospective study done in a level I trauma center. A total of 110 patients (62 males and 48 females) older than 18, who had clinically indicated Computed Tomography (CT) scan done without any pelvic pathologies were included. A 3D Multiplanar reconstruction (MPR) and 3D reconstruction CT scans were derived from the DICOM images and various methods were used to analyze the ideal angulations based on the 2-Dimensional and 3-Dimensional images rendered. Mean and standard deviation were calculated for each angle measured with a comparison between gender and presence or absence of dysmorphic sacra. A correlational analysis was then done comparing the angles obtained on the sagittal CT scan from the 3D MPR and the ideal inlet and outlet angle from the 3D reconstructed images. The mean caudal angulation for the inlet view was 31.448 ± 7.25° with no significant difference for the normal and dysmorphic sacrum and the mean cephalad angulation for screening for the ideal outlet view was 38.39 ± 6.96° with individuals with dysmorphic sacra having an angulation 5° more than the normal group. The study re-evaluated the ideal screening inlet and outlet angulations in the Filipino population which demonstrated a mean of 31° of caudal angulation for the inlet view and a mean of 38° of cephalad angulation on outlet views.

Published in	International Journal of Medical Imaging (Volume 10, Issue 2)
DOI	10.11648/j.ijmi.20221002.12
Page(s)	16-21
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Pelvis, Pelvic Fracture, Inlet Angle, Outlet Angle, CT Scan 3D Reconstruction

References

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APA Style

John Ricardo Buenacosa Chua, Joshua De Castro Unsay. (2022). The Pelvic Inlet and Outlet Radiographic View in Filipinos: A Retrospective Study of CT Scan Measurements and 3-Dimensional Computed Tomography Reconstructions. International Journal of Medical Imaging, 10(2), 16-21. https://doi.org/10.11648/j.ijmi.20221002.12

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ACS Style

John Ricardo Buenacosa Chua; Joshua De Castro Unsay. The Pelvic Inlet and Outlet Radiographic View in Filipinos: A Retrospective Study of CT Scan Measurements and 3-Dimensional Computed Tomography Reconstructions. Int. J. Med. Imaging 2022, 10(2), 16-21. doi: 10.11648/j.ijmi.20221002.12

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AMA Style

John Ricardo Buenacosa Chua, Joshua De Castro Unsay. The Pelvic Inlet and Outlet Radiographic View in Filipinos: A Retrospective Study of CT Scan Measurements and 3-Dimensional Computed Tomography Reconstructions. Int J Med Imaging. 2022;10(2):16-21. doi: 10.11648/j.ijmi.20221002.12

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@article{10.11648/j.ijmi.20221002.12,
  author = {John Ricardo Buenacosa Chua and Joshua De Castro Unsay},
  title = {The Pelvic Inlet and Outlet Radiographic View in Filipinos: A Retrospective Study of CT Scan Measurements and 3-Dimensional Computed Tomography Reconstructions},
  journal = {International Journal of Medical Imaging},
  volume = {10},
  number = {2},
  pages = {16-21},
  doi = {10.11648/j.ijmi.20221002.12},
  url = {https://doi.org/10.11648/j.ijmi.20221002.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmi.20221002.12},
  abstract = {Injuries to the pelvic ring pose a significant challenge requiring urgent multidisciplinary management. Adequate radiological evaluation is essential in assessing these injuries. The standard radiologic evaluation of the pelvis includes an AP, inlet, and outlet view. The inlet and outlet view are classically taught to be orthogonally taken with a 45-degree angulation from the anteroposterior plane. However, there is growing evidence that there is a significant individual variation within the population and these values need to be re-analyzed. This is a retrospective study done in a level I trauma center. A total of 110 patients (62 males and 48 females) older than 18, who had clinically indicated Computed Tomography (CT) scan done without any pelvic pathologies were included. A 3D Multiplanar reconstruction (MPR) and 3D reconstruction CT scans were derived from the DICOM images and various methods were used to analyze the ideal angulations based on the 2-Dimensional and 3-Dimensional images rendered. Mean and standard deviation were calculated for each angle measured with a comparison between gender and presence or absence of dysmorphic sacra. A correlational analysis was then done comparing the angles obtained on the sagittal CT scan from the 3D MPR and the ideal inlet and outlet angle from the 3D reconstructed images. The mean caudal angulation for the inlet view was 31.448 ± 7.25° with no significant difference for the normal and dysmorphic sacrum and the mean cephalad angulation for screening for the ideal outlet view was 38.39 ± 6.96° with individuals with dysmorphic sacra having an angulation 5° more than the normal group. The study re-evaluated the ideal screening inlet and outlet angulations in the Filipino population which demonstrated a mean of 31° of caudal angulation for the inlet view and a mean of 38° of cephalad angulation on outlet views.},
 year = {2022}
}

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TY  - JOUR
T1  - The Pelvic Inlet and Outlet Radiographic View in Filipinos: A Retrospective Study of CT Scan Measurements and 3-Dimensional Computed Tomography Reconstructions
AU  - John Ricardo Buenacosa Chua
AU  - Joshua De Castro Unsay
Y1  - 2022/05/19
PY  - 2022
N1  - https://doi.org/10.11648/j.ijmi.20221002.12
DO  - 10.11648/j.ijmi.20221002.12
T2  - International Journal of Medical Imaging
JF  - International Journal of Medical Imaging
JO  - International Journal of Medical Imaging
SP  - 16
EP  - 21
PB  - Science Publishing Group
SN  - 2330-832X
UR  - https://doi.org/10.11648/j.ijmi.20221002.12
AB  - Injuries to the pelvic ring pose a significant challenge requiring urgent multidisciplinary management. Adequate radiological evaluation is essential in assessing these injuries. The standard radiologic evaluation of the pelvis includes an AP, inlet, and outlet view. The inlet and outlet view are classically taught to be orthogonally taken with a 45-degree angulation from the anteroposterior plane. However, there is growing evidence that there is a significant individual variation within the population and these values need to be re-analyzed. This is a retrospective study done in a level I trauma center. A total of 110 patients (62 males and 48 females) older than 18, who had clinically indicated Computed Tomography (CT) scan done without any pelvic pathologies were included. A 3D Multiplanar reconstruction (MPR) and 3D reconstruction CT scans were derived from the DICOM images and various methods were used to analyze the ideal angulations based on the 2-Dimensional and 3-Dimensional images rendered. Mean and standard deviation were calculated for each angle measured with a comparison between gender and presence or absence of dysmorphic sacra. A correlational analysis was then done comparing the angles obtained on the sagittal CT scan from the 3D MPR and the ideal inlet and outlet angle from the 3D reconstructed images. The mean caudal angulation for the inlet view was 31.448 ± 7.25° with no significant difference for the normal and dysmorphic sacrum and the mean cephalad angulation for screening for the ideal outlet view was 38.39 ± 6.96° with individuals with dysmorphic sacra having an angulation 5° more than the normal group. The study re-evaluated the ideal screening inlet and outlet angulations in the Filipino population which demonstrated a mean of 31° of caudal angulation for the inlet view and a mean of 38° of cephalad angulation on outlet views.
VL  - 10
IS  - 2
ER  -

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Author Information

John Ricardo Buenacosa Chua

Department of Orthopaedics, East Avenue Medical Center, Quezon City, Philippines
Joshua De Castro Unsay

Department of Orthopaedics, East Avenue Medical Center, Quezon City, Philippines

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APA Style

John Ricardo Buenacosa Chua, Joshua De Castro Unsay. (2022). The Pelvic Inlet and Outlet Radiographic View in Filipinos: A Retrospective Study of CT Scan Measurements and 3-Dimensional Computed Tomography Reconstructions. International Journal of Medical Imaging, 10(2), 16-21. https://doi.org/10.11648/j.ijmi.20221002.12

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ACS Style

John Ricardo Buenacosa Chua; Joshua De Castro Unsay. The Pelvic Inlet and Outlet Radiographic View in Filipinos: A Retrospective Study of CT Scan Measurements and 3-Dimensional Computed Tomography Reconstructions. Int. J. Med. Imaging 2022, 10(2), 16-21. doi: 10.11648/j.ijmi.20221002.12

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AMA Style

John Ricardo Buenacosa Chua, Joshua De Castro Unsay. The Pelvic Inlet and Outlet Radiographic View in Filipinos: A Retrospective Study of CT Scan Measurements and 3-Dimensional Computed Tomography Reconstructions. Int J Med Imaging. 2022;10(2):16-21. doi: 10.11648/j.ijmi.20221002.12

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@article{10.11648/j.ijmi.20221002.12,
  author = {John Ricardo Buenacosa Chua and Joshua De Castro Unsay},
  title = {The Pelvic Inlet and Outlet Radiographic View in Filipinos: A Retrospective Study of CT Scan Measurements and 3-Dimensional Computed Tomography Reconstructions},
  journal = {International Journal of Medical Imaging},
  volume = {10},
  number = {2},
  pages = {16-21},
  doi = {10.11648/j.ijmi.20221002.12},
  url = {https://doi.org/10.11648/j.ijmi.20221002.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmi.20221002.12},
  abstract = {Injuries to the pelvic ring pose a significant challenge requiring urgent multidisciplinary management. Adequate radiological evaluation is essential in assessing these injuries. The standard radiologic evaluation of the pelvis includes an AP, inlet, and outlet view. The inlet and outlet view are classically taught to be orthogonally taken with a 45-degree angulation from the anteroposterior plane. However, there is growing evidence that there is a significant individual variation within the population and these values need to be re-analyzed. This is a retrospective study done in a level I trauma center. A total of 110 patients (62 males and 48 females) older than 18, who had clinically indicated Computed Tomography (CT) scan done without any pelvic pathologies were included. A 3D Multiplanar reconstruction (MPR) and 3D reconstruction CT scans were derived from the DICOM images and various methods were used to analyze the ideal angulations based on the 2-Dimensional and 3-Dimensional images rendered. Mean and standard deviation were calculated for each angle measured with a comparison between gender and presence or absence of dysmorphic sacra. A correlational analysis was then done comparing the angles obtained on the sagittal CT scan from the 3D MPR and the ideal inlet and outlet angle from the 3D reconstructed images. The mean caudal angulation for the inlet view was 31.448 ± 7.25° with no significant difference for the normal and dysmorphic sacrum and the mean cephalad angulation for screening for the ideal outlet view was 38.39 ± 6.96° with individuals with dysmorphic sacra having an angulation 5° more than the normal group. The study re-evaluated the ideal screening inlet and outlet angulations in the Filipino population which demonstrated a mean of 31° of caudal angulation for the inlet view and a mean of 38° of cephalad angulation on outlet views.},
 year = {2022}
}

Copy | Download

TY  - JOUR
T1  - The Pelvic Inlet and Outlet Radiographic View in Filipinos: A Retrospective Study of CT Scan Measurements and 3-Dimensional Computed Tomography Reconstructions
AU  - John Ricardo Buenacosa Chua
AU  - Joshua De Castro Unsay
Y1  - 2022/05/19
PY  - 2022
N1  - https://doi.org/10.11648/j.ijmi.20221002.12
DO  - 10.11648/j.ijmi.20221002.12
T2  - International Journal of Medical Imaging
JF  - International Journal of Medical Imaging
JO  - International Journal of Medical Imaging
SP  - 16
EP  - 21
PB  - Science Publishing Group
SN  - 2330-832X
UR  - https://doi.org/10.11648/j.ijmi.20221002.12
AB  - Injuries to the pelvic ring pose a significant challenge requiring urgent multidisciplinary management. Adequate radiological evaluation is essential in assessing these injuries. The standard radiologic evaluation of the pelvis includes an AP, inlet, and outlet view. The inlet and outlet view are classically taught to be orthogonally taken with a 45-degree angulation from the anteroposterior plane. However, there is growing evidence that there is a significant individual variation within the population and these values need to be re-analyzed. This is a retrospective study done in a level I trauma center. A total of 110 patients (62 males and 48 females) older than 18, who had clinically indicated Computed Tomography (CT) scan done without any pelvic pathologies were included. A 3D Multiplanar reconstruction (MPR) and 3D reconstruction CT scans were derived from the DICOM images and various methods were used to analyze the ideal angulations based on the 2-Dimensional and 3-Dimensional images rendered. Mean and standard deviation were calculated for each angle measured with a comparison between gender and presence or absence of dysmorphic sacra. A correlational analysis was then done comparing the angles obtained on the sagittal CT scan from the 3D MPR and the ideal inlet and outlet angle from the 3D reconstructed images. The mean caudal angulation for the inlet view was 31.448 ± 7.25° with no significant difference for the normal and dysmorphic sacrum and the mean cephalad angulation for screening for the ideal outlet view was 38.39 ± 6.96° with individuals with dysmorphic sacra having an angulation 5° more than the normal group. The study re-evaluated the ideal screening inlet and outlet angulations in the Filipino population which demonstrated a mean of 31° of caudal angulation for the inlet view and a mean of 38° of cephalad angulation on outlet views.
VL  - 10
IS  - 2
ER  -

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