[국내논문]Development of portable digital radiography system with device for sensing X-ray source-detector angle and its application in chest imaging 엑스선촬영 각도를 측정할 수 있는 장치 개발과 흉부 X선 영상촬영에서의 적용원문보기
Kim, Tae-Hoon
(Imaging Science Research Center, Wonkwang University)
,
Heo, Dong-Woon
(Imaging Science Research Center, Wonkwang University)
,
Ryu, Jong-Hyun
(Imaging Science Research Center, Wonkwang University)
,
Jeong, Chang-Won
(Imaging Science Research Center, Wonkwang University)
,
Jun, Hong Young
(Imaging Science Research Center, Wonkwang University)
,
Kim, Kyu Gyeom
(Imaging Science Research Center, Wonkwang University)
,
Hong, Jee Min
(Imaging Science Research Center, Wonkwang University)
,
Jang, Mi Yeon
(Imaging Science Research Center, Wonkwang University)
,
Kim, Dae Won
(Dept. of Neurosurgery, Wonkwang University School of Medicine)
,
Yoon, Kwon-Ha
(Dept. of R)
This study was to develop a portable digital radiography (PDR) system with a function measuring the X-ray source-with-detector angle (SDA) and to evaluate the imaging performance for the diagnosis of chest imaging. The SDA device consisted of an Arduino, an accelerometer and gyro sensor, and a Bluet...
This study was to develop a portable digital radiography (PDR) system with a function measuring the X-ray source-with-detector angle (SDA) and to evaluate the imaging performance for the diagnosis of chest imaging. The SDA device consisted of an Arduino, an accelerometer and gyro sensor, and a Bluetooth module. According to different angle degrees, five anatomical landmarks on chest images were assessed using a 5-point scale. Mean signal-to-noise ratio and contrast-to-noise ratio were 182.47 and 141.43. Spatial resolution (10% MTF) and entrance surface dose were 3.17 lp/mm ($157{\mu}m$) and 0.266mGy. The angle values of SDA device were not significant difference as compared to those of the digital angle meter. In chest imaging, SNR and CNR values were not significantly different according to different angle degrees (repeated-measures ANOVA, p>0.05). The visibility scores of the border of heart, 5th rib and scapula showed significant differences according to different angles (rmANOVA, p<0.05), whereas the scores of the clavicle and 1st rib were not significant. It is noticeable that the increase in SDA degree was consistent with the increase of visibility score. Our PDR with SDA device would be useful to be applicable to clinical radiography setting according to the standard radiography guideline at various fields.
This study was to develop a portable digital radiography (PDR) system with a function measuring the X-ray source-with-detector angle (SDA) and to evaluate the imaging performance for the diagnosis of chest imaging. The SDA device consisted of an Arduino, an accelerometer and gyro sensor, and a Bluetooth module. According to different angle degrees, five anatomical landmarks on chest images were assessed using a 5-point scale. Mean signal-to-noise ratio and contrast-to-noise ratio were 182.47 and 141.43. Spatial resolution (10% MTF) and entrance surface dose were 3.17 lp/mm ($157{\mu}m$) and 0.266mGy. The angle values of SDA device were not significant difference as compared to those of the digital angle meter. In chest imaging, SNR and CNR values were not significantly different according to different angle degrees (repeated-measures ANOVA, p>0.05). The visibility scores of the border of heart, 5th rib and scapula showed significant differences according to different angles (rmANOVA, p<0.05), whereas the scores of the clavicle and 1st rib were not significant. It is noticeable that the increase in SDA degree was consistent with the increase of visibility score. Our PDR with SDA device would be useful to be applicable to clinical radiography setting according to the standard radiography guideline at various fields.
* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.
문제 정의
Therefore, the purpose of this study was to develop a PDR system including a device for obtaining the SDA and to assess the imaging performance for the diagnosis of chest imaging.
제안 방법
The modulation transfer function (MTF) has been used to evaluate spatial resolution of imaging systems. This study was used a bar phantom to generate the MTF curve and was measured image resolution at 10% on MTF curve.
The ESD measurement was performed using a dosimeter (Piranha, RTI Electronics, Molndal, Sweden). This study was measured the ESD under the conditions of 80 kVp tube voltage, 4 mAs current, 100 ms and 1 meter SDD.
데이터처리
According to the different angle degrees, the variation in image qualities and visibility scores were analyzed with the repeated- measures analysis of variance (rmANOVA) and Tukey's post hoc tests.
20, Chicago, IL, USA) software. The angle difference between both angle meters (SDA device and digital angle meter) was analyzed with the independent two sample t-test. According to the different angle degrees, the variation in image qualities and visibility scores were analyzed with the repeated- measures analysis of variance (rmANOVA) and Tukey's post hoc tests.
* The difference between angle values of digital angle meter and developed SDA device was analyzed with the independent two sample t-test.
* The significant difference between different angle degrees was analyzed with repeated-measures ANOVA with Tukey’s post hoc test: a, 0 vs 10; b, 0 vs 20; c, 0 vs 30; d, 10 vs 20; e, 10 vs 30; and f, 20 vs 30.
AI-Helper
※ AI-Helper는 부적절한 답변을 할 수 있습니다.