본 연구에서는 3D 프린팅 기술과 인체공학 순설계를 이용하여 턱관절 자기공명영상 동적 턱관절 검사 보조기구를 개발하고자 하였다. 3D 프린팅 기술 재료는 3D 프린터(Sindo, 3DWOX1, Korea), 3D 모델러 프로그램(Fusion 360, autodesk, USA), PLA(polylactic Acid) 필라멘트 소재를 이용하였고, 영상 검사는 3.0T 자기공명영상 장비 (Magnetom Vida, Siemens, Germany)를 사용하였다. 개발 방법은 성인 30명(남:13명, 여:17명, 평균나이 22.9±2.0세)의 안면뼈 CT(computed tomography) 검사의 단면 영상을 역학적으로 실측하여 상/하악궁의 형상을 모델링하였다. 모델링된 파일은 FDM(fused deposition modeling) 방식으로 3D 프린팅하였다. 출력된 보조기구는 자화 감수성 인공물 실험, 동적 영상 비교, 만족도 평가로 성능을 평가하였다. 그 결과, 자화감수성 인공물 발생은 개발된 개구 보조 장비와 비교하여 모든 영상에서 유의한 차이가 없었다. 동적 비교 영상에서는 TSE 기법이 모든 평가 법에서 가장 우수한 영상 품질을 보였다. 만족도 평가에서는 피검자는 평균 4.3점, 방사선사는 평균 4.4점으로 높은 만족도를 보였다. 결론적으로 인공물 발생이 없는 환자 맞춤형 보조기구에 개구의 동적 기능이 탑재된 보조기구 를 개발하였다.

The study was conducted from July 5th to 12th, 2014 on 30 males and females. The examination device used for this study were Discovery XR656(GE Healthcare, Kemath, Germany) DR and SOMATOM definition AS+ CT. T he device was made of foamex (foam PVC). The posture for cubital tunnel view examination requires for patients to bend their elbows more than 60 degrees and turn their forearms 20 degrees externally. The analysis method of cubital tunnel depth(CTD) was to measure the length between the deepest location of groove for ulnar nerve and a line vertical to the line connecting protruding part of medial epicondyle and trochlea medial in order to measure the CTD with and without the assistance device. CTD were measured and compared from VRT images on CT examination of 30 males and females to prove the usability of the assistance device. For statistics, SPSS 18.0 version was used to conduct independent two samples t-test. Differences in CTD between the two sexes were nonexistent but, the differences in CTD according to the use of assistance device were 4.63±0.86mm in temporizing measure, and 6.01±0.27mm with the assistance device for male. For females, the results were 4.58±0.41mm in temporizing measure and 5.94±0.58mm with the assistance device. The results proved that the measured values of CTD are deeper with the use of assistance device. The difference between CTD value from CT of normal person and CTD level measured with X-ray using the assistance device were nonexistent. P<0.05) Use of an assistance device made more accurate and convenient examinations possible compared to examinations without any assistance devices. Use of the assistance device in this study in radiological examinations on Cubital Tunnel Syndrome would provide more accurate and convenient examinations in the future. Keyword : Cubital Tunnel