有沒有搞錯，follow through 竟然是「貫徹執行」和「堅持到底」這種國人所耳熟能詳的詞語！
沒錯！Merriam-Webster 的解釋：
follow through (verb): to press on in an activity or process especially to a conclusion
follow-through (noun): the act or an instance of following through
沒錯！它也是 follow-through 前面加上某個限定詞，它就是一個醫學詞語。
small bowel follow-through (SBFT) 中文的意思是小腸造影。下一段文字會清楚地告訴你什麼是small bowel follow-through：
In addition to the standard upper GI series, a physician may request a detailed small bowel follow-through (SBFT), which is a timed series of films. After the preliminary upper GI series is complete, the patient will drink additional barium sulfate, and will be escorted to a waiting area while the barium moves through the small intestines. X rays are initially taken at 15-minute intervals until the barium reaches the colon (the only way to be sure the terminal ileum is fully seen is to see the colon or ileocecal valve). The interval may be increased to 30 minutes, or even one hour if the barium passes slowly. Then the radiologist will obtain additional views of the terminal ileum (the most distal segment of the small bowel, just before the colon). This procedure can take from one to four hours.
Read more: http://www.surgeryencyclopedia.com/St-Wr/Upper-GI-Exam.html#ixzz5JKjqrvoV
可見，small bowel follow-through 就是把對比劑一路觀測到底，直至看看到回盲瓣。
這個過程需要1-4小時，不能持續拍片，因此只能間斷拍片，small bowel series 這個術語更能反映這個過程（TV series則很好理解），字面上就是小腸系列，即使說成小腸系列檢查，國人也會誤解。
下面再介紹一下相關影像學術語：
Upper gastrointestinal series/upper GI series，也稱作upper GI study。
其中食道的鋇劑檢查叫做 barium esophagram 或 barium swallow（吞鋇）；
不要以為消化道的對比劑都是硫酸鋇（barium sulfate），還有含碘的對比劑 （iodinated contrast），比如泛影葡胺（Gastrografin）。
還有「造影劑」，這個詞也是易於中國人理解，標準的說法是對比劑，無論靜脈的還是腸道的，簡稱 contrast，全稱 contrast agent 或 contrast medium，所謂造影就是 contrast study。
X-Ray：X線
film：膠片
fluoroscopy/fluoroscopic study：透視
spot radiograph：點片
enteroclysis (small bowel enema)：小腸灌腸造影
barium meal：鋇餐
barium enema：鋇灌腸