磁控膠囊內視鏡是一項嶄新的內鏡技術,能讓病人在無痛無創的情況下完成食管、胃和小腸檢查。病人於檢查時吞服一粒內置攝像頭的磁性膠囊。在檢查胃部時，檢查者會通過外部磁力機器 以五個維度操控膠囊在病人體內的運動來完成全面檢查。胃部的檢查時間若為10-20分鐘。接著，膠囊會隨著消化道蠕動進入十二指腸，空腸、迴腸, 最後經大腸隨糞便一起排出。膠囊電量可維持長達12小時，沿途會以每秒2幀的速度拍攝圖片。
For whom
◻️ Those who intend to have health check
◻️ Those who are indicated for conventional endoscopy, but are unwilling to have or cannot tolerate this procedure. For example, upper abdominal pain, bloating, acid reflux, gastrointestinal bleeding (e.g. melena, hematemesis), allergy to sedatives or anaesthetics.
◻️ Those who are suspected of small bowel disease without stenosis or obstruction, especially those with negative findings in oesophagogastroduodenoscopy (OGD) and colonoscopy.
磁控膠囊內視鏡可做疾病的篩查和診斷。如發現可疑病變需要進一步治療或者活檢，醫生會再選擇傳統內鏡進行干預。之前的研究發現磁控膠囊內視鏡對胃部病灶診斷的敏感性為90.4%，特異性為94.7%，並且無遺漏重要的病灶（如大潰瘍和胃內腫瘤）。 [1]
Not suitable for
◻️ Patients who have a pacemaker, electronic cochlear implant or other metal implants that are contraindicated to MRI scans.
◻️ Pregnant women
◻️ Children
◻️ Gastrointestinal obstruction, stenosis, perforation, or fistula
◻️ Dysphagia
◻️ Patients who have undergone gastric bypass or bariatric surgery and who are expected with high risk of capsule retention.
Risk
◻️ 主要的風險是膠囊滯留於消化道，不排出 （罕見）
◻️ 磁控膠囊內視鏡檢查和普通膠囊內視鏡的區別
◻️ 磁控膠囊內視鏡檢查胃部時，操作員可以主動操控膠囊在胃內的運動，而普通膠囊內視鏡只能通過被動運動進行胃內掃描，這樣會造成大面積的檢查盲區。
Process
1️⃣檢查前空腹8小時，並在檢查前40分鐘根據指導飲用去泡劑及800ml 水充盈胃部。
2️⃣受檢者穿上帶有無線記錄器的工作背心後，平臥位於檢查台上吞服磁控膠囊。
3️⃣在檢查者通過磁力操控受檢者胃內的膠囊時，受檢者需根據指導變換體位配合胃部檢查。
4️⃣胃部檢查完後，受檢者可以穿著工作背心離開檢查室。檢查不影響正常生活，膠囊會隨著胃腸蠕動完成餘下消化道的檢查。膠囊的總電量一般可維持10小時以上，在此期間工作背心會繼續收集膠囊所拍攝的影像。
5️⃣歸還工作背心。
FAQ
1️⃣磁控膠囊內視鏡是否難吞？
It is a pill-sized (about 27mm X 18mm) capsule with a smooth surface. Except those with dysphagia, most patients have no difficulties in swallowing the capsule.
2️⃣可以選擇磁控膠囊內視鏡檢查範圍嗎？檢查時間是多久？
The examinee can choose:
◽Esophagus and stomach The examination is usually completed within 30 minutes.
◽Esophagus, stomach and the whole small bowel examination. The examination requires bowel preparation. The whole examination usually needs 10-12 hours.
3️⃣可以再檢查過程中進食和飲水嗎？
Yes. Examinee can drink water or any colourless liquid during examination and resume a normal diet after the examination. Examinee who chooses whole small bowel examination can eat solid food (e.g. sandwich) 4-6 hours after stomach examination.
參考文獻：
Liao Z, Hou X, et al. Accuracy of Magnetically Controlled Capsule Endoscopy, Compared With Conventional Gastroscopy, in Detection of Gastric Diseases. Clin Gastroenterol Hepatol. 2016 Sep;14(9):1266-1273.e1. doi: 10.1016/j.cgh.2016.05.013. Epub 2016 May 20. PMID: 27211503.