檢查指引 — 正電子電腦掃描（PET‑CT）
PET‑CT Examination Guide

一、登記文件 | Registration Documents

• 請攜帶醫生轉介信正本及香港身份證正本登記。
• 內地人士請出示有效通行證或護照。
• 不接受影印本或手機照片。
• Please bring the original referral letter and your HKID card for registration.
• Mainland visitors should present a valid travel document or passport.
• Photocopies or mobile photos will not be accepted.

二、報到時間 | Check-in Time

• 請於預約時間前 30 分鐘 抵達中心辦理報到及準備。
• Please arrive at the centre 30 minutes before your scheduled appointment for registration and preparation.

三、禁食與用液指引 | Fasting & Fluid Intake

• 檢查前至少 4 小時禁食（除醫生處方藥外），可少量飲用白開水。
• 檢查前不得接受 腸外營養（parenteral nutrition） 或任何含葡萄糖之口服／靜脈注射溶液。
• Please fast for at least 4 hours before the examination (except prescribed medications). You may drink plain water in small amounts.
• Avoid any parenteral nutrition or glucose-containing oral/IV fluids before the scan.

四、藥物與檢查間隔 | Medication & Examination Interval

• 檢查前三天請停止服用中藥（如靈芝、雲芝丸等）。
• 檢查前 10 日內 請勿接受含鋇劑（Barium）之 X 光檢查。
• Discontinue Chinese herbal medicines (e.g., Lingzhi or Yunzhi preparations) for 3 days prior to the scan.
• Do not undergo any barium-containing X-ray tests within 10 days before the examination.

五、活動限制 | Activity Restrictions

• 檢查前一日及當日請避免劇烈運動或高強度體力活動。
• Avoid strenuous exercise or heavy physical activity on the day before and on the day of the scan.

六、糖尿病患者 | For Diabetic Patients

• 通常安排於早上進行掃描，以利血糖穩定。
• 檢查前一日午夜起，停止服用降血糖藥或注射胰島素（僅可飲水），但可繼續服用非糖尿病藥物。請攜帶糖尿藥及胰島素備用。
• 到達中心後將測量血糖；若高於標準，檢查可能需延遲或改期。
• 掃描完成後可恢復正常飲食，並按醫囑恢復用藥以避免低血糖。
• PET‑CT scans for diabetic patients are usually scheduled in the morning when blood glucose is more stable.
• Please stop taking anti-diabetic medications and insulin from midnight before the scan (water only allowed). Continue other prescribed medications. Bring your diabetes medicines and insulin with you.
• Blood glucose will be checked upon arrival. Scans may be postponed if levels are too high.
• After the scan, resume normal meals and medications as directed to avoid hypoglycemia.

七、顯影劑及腎功能 | Contrast Agent & Renal Function

• 若檢查同時需使用顯影劑，下列人士須提供 最近三個月內之腎功能報告：
• 年齡 65 歲或以上
• 糖尿病患者
• 已知腎病或服用血壓藥者
• If contrast injection is required, please provide a recent kidney function report (within 3 months) if you are:
• 65 years of age or older
• a diabetic patient
• a patient with kidney disease or taking antihypertensive medications

八、過敏與哮喘病史 | Allergy & Asthma History

• 若曾對食物、藥物或顯影劑過敏，或有哮喘病史，請提前通知轉介醫生或中心人員。
• 必要時可於檢查前給予類固醇或其他預防性藥物以降低過敏風險。
• Inform your doctor or our staff in advance if you have allergies to food, medication, or contrast agents, or a history of asthma. Preventive medications (e.g., steroids) may be administered to reduce allergic risk.

九、未成年病人 | Minors

• 18 歲以下病人須由家長或法定監護人陪同，並簽署同意書方可進行檢查。
• Patients under 18 must be accompanied by a parent or legal guardian, who is required to sign a consent form.

十、個人物品與檢查資料 | Personal Belongings & Medical Records

• 檢查前請取下所有飾物與金屬物品（手錶、戒指、耳環、髮夾等）。
• 請攜帶相關影像資料與報告（如 X 光、CT、MRI 等）以供對照。
• Remove all jewelry and metallic items (watch, ring, earrings, hair accessories, etc.) before the scan.
• Please bring any relevant imaging studies and reports (e.g. X-ray, CT, or MRI) for comparison.

十一、女性病人與懷孕 | Female Patients & Pregnancy

• PET‑CT 涉及 輻射。如懷疑懷孕，請先諮詢轉介醫生以評估是否需改期。
• 若月經週期超過 28 天，通常需進行尿液驗孕測試；惟年滿 55 歲且停經至少 2 年者可免除。
• PET‑CT scans involve radiation exposure. If you may be pregnant, please consult your referring doctor to determine whether to postpone the scan.
• If your menstrual cycle exceeds 28 days, a urine pregnancy test may be required. Women aged 55 or above who have been postmenopausal for at least 2 years are exempt.

十二、其他事項 | Additional Notes

• 本指引提供一般檢查注意事項，未能詳列所有風險或併發症。如需個別建議或詳細說明，請聯絡本中心醫護人員或主診醫生。
• This leaflet provides general guidance and may not include all potential risks or complications. For personalised advice or medical assessment, please consult our staff or your attending physician.