|
KMID : 1151820180120040525
|
|
Journal of the Korean Society of Radiology
2018 Volume.12 No. 4 p.525 ~ p.532
|
|
|
The Study of Effectiveness in a Modified Rib Oblique Projection View Using a Chest Phantom
|
|
Um Ki-Tae
Lee Min-Su
Kang Sung-Jin
|
|
|
Abstract
|
|
|
|
This study is filmed by applying the axial angle variation of the X-ray tube instead of the patient’s position change during the perimetric examination of the ribs. A Reference image with the rib oblique examination using a chest phantom and experimental images applied with a six-phase variation in the axial angle by increasing 5° tube angle each from 5°~30° from the vertical incident direction of the chest phantom to the right horizontal axis were obtained. For the quantitative comparative evaluation of the images, SNR and CNR were calculated for regions of interest in the experimental images based on the reference image. Also, the left-right rib ratio in the reference image and the left-right rib ratio in the experimental images are measured and compared. As a result of the study, the experimental images with a tube angle of 25° were best shown in the measurements of the SNR, CNR and left-right rib ratio compared to the reference image with a standard examination method. The modified rib examinations will consider useful, if it is difficult to maintain the patient’s examination position.
|
|
|
KEYWORD
|
|
|
Rib, Oblique Projection View, Right.Left Rib Ratio
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|