远距离平面旋转扫描仪用于内镜光学连贯性断层扫描
Kyle Searles1, Nabil Shalabi2, Geoffrey Hohert3
1School of Biomedical Engineering, University of British Columbia, Vancouver, BC V6T 1Z3 Canada.
Biomedical engineering letters
|April 22, 2024
概括
一种新型的空洞微型扫描仪增强了内镜光学连贯断层扫描 (OCT) 用于疾病检测. 这种改进的扫描仪实现了更快的速度和小流明的高质量3D成像,这对于医学诊断至关重要.
科学领域:
- 生物医学工程 生物医学工程
- 光学成像技术的成像
- 医疗器械 医疗器械
背景情况:
- 光学连贯断层扫描 (OCT) 提供了用于疾病检测和治疗的高分辨率成像.
- 传统的OCT方法在小型光度的3D成像方面遇到了困难.
- 在内镜探针的远端集成扫描仪是先进的OCT成像的一个有希望的方法.
研究的目的:
- 提出和原型一个空洞的,平面的微旋转执行器,用于作为一个内镜远距离扫描仪在OCT.
- 开发一个小型的,铁流体辅助的电磁执行器,用于360度光学扫描.
- 评估实时内镜OCT原型扫描仪的性能和有效性.
主要方法:
- 设计和原型一个空心和平面微旋转执行器.
- 将执行器与光纤探针和OCT的梯度指数镜头集成在一起.
- 在人体组织样本上测试了扫描仪的动态性能,热极限和成像能力.
主要成果:
- 扫描仪的最大转速为6500rpm,比以前的设计提高了325%.
- 该设备在体外使用的安全热极限以下运行.
- 实时OCT成像显示了皮肤层和汗腺的明显分化,没有图像阴影.
结论:
- 原型的空洞微扫描仪对高质量,实时内镜OCT有效.
- 扫描仪的设计克服了用于小光量成像的传统方法的局限性.
- 这项技术具有很大的潜力,可以利用海上国家和地区来推进疾病的检测和治疗.
相关概念视频
01:10Computed Tomography
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
01:25Ultrasound II: Endoscopic Ultrasound and FibroScan
Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):
Endoscopic Ultrasound (EUS):
01:28Endoscopic Procedures III: Video Capsule Endoscopy
Capsule endoscopy, or wireless or video capsule endoscopy, is a diagnostic procedure for examining the entire gastrointestinal tract. Patients swallow a capsule about the size of a vitamin tablet. The capsule is equipped with a transmitter, a battery, an LED light source, and a color video camera to capture images throughout the gastrointestinal tract. This procedure is particularly useful for diagnosing conditions such as Crohn's disease, ulcerative colitis, tumors, polyps, ulcers, unexplained...