检查指引 — 电脑扫描（CT）
CT Scan Examination Guide

一、登记文件 | Registration Documents

• 请携带医生转介信正本及香港身份证正本登记。
• 内地人士请出示有效通行证或护照。
• 不接受影印本或手机照片。
• Please bring the original doctor’s referral letter and your HKID card for registration.
• Mainland visitors should present a valid travel document or passport.
• Photocopies or mobile photos are not accepted.

二、报到时间 | Check-in Time

• 请于预约时间前 30 分钟 抵达中心办理报到与准备。
• Please arrive at the centre 30 minutes before your scheduled appointment for registration and preparation.

三、禁食指引 | Fasting Instructions

• 若扫描范围涉及胆部（如全腹、上腹等），请于检查前 4 小时禁食。除非医生另有指示，仅可少量饮用清水。
• For scans involving the biliary region (e.g., abdomen or upper abdomen), please fast for 4 hours before the scan.
• Unless otherwise instructed by your doctor, you may drink only small amounts of water.

四、心脏血管造影（若适用） | Cardiac CT Angiography (If Applicable)

• 若接受心脏血管造影，请继续服用医生指示的 β 阻滞剂或降血压药物，或依主诊医生指示执行。
• 若患有心律不整，可能影响检查准确性，请于预约或到诊时告知医护人员。
• For cardiac CT angiography, please continue taking any prescribed β-blockers or antihypertensive medications unless told otherwise by your doctor.
• If you have arrhythmia, please inform our staff, as it may affect image quality.

五、显影剂与肾功能要求 | Contrast Agent & Renal Function Requirements

• 若检查需注射显影剂，下列情况者需提供 最近三个月内的肾功能报告：
• 年龄 65 岁或以上人士；
• 已知肾病或曾接受肾脏相关治疗（包括肾移植、洗肾等）。
• 曾对食物、药物或显影剂有过敏反应，或有哮喘病史者，请提前通知转介医生或中心。必要时，医生可在检查前安排使用类固醇或其他预防措施以降低过敏风险。
• If your examination requires contrast injection, please provide a kidney function (blood) report performed within 3 months if:
• You are aged 65 or above;
• You have kidney disease or previously received kidney-related treatment (e.g., transplant, dialysis).
• If you have a history of food, drug, or contrast allergy, or asthma, please inform your referring doctor or our staff in advance. Preventive medications (e.g., steroids) may be advised to reduce allergic risks.

六、糖尿病患者（使用二甲双胍 Metformin） | Diabetic Patients (on Metformin)

• 若肾功能（eGFR）正常，通常无需停药。
• 若 eGFR < 30 mL/min/1.73m² 或有急性肾功能不全者，应于注射显影剂后 停用 48 小时，并于血液检查确认肾功能稳定后再恢复服用。
• 具体用药安排须遵循主诊医生指示。
• If your kidney function (eGFR) is normal, Metformin usually does not need to be withheld.
• If eGFR < 30 mL/min/1.73m² or acute kidney injury is present, stop Metformin for 48 hours after the contrast injection, and only resume after confirming stable kidney function.
• Always follow your doctor’s specific instructions.

七、未成年人 | Minors

• 18 岁以下病人须由家长或法定监护人陪同，并签署同意书方可进行检查。
• Patients under 18 must be accompanied by a parent or legal guardian who must sign the consent form.

八、个人物品与准备 | Personal Belongings & Preparation

• 检查前请脱除所有饰物与金属物品（手表、戒指、项链、耳环、发夹等）。
• 请携带与本次检查相关之 X 光片、报告或医疗纪录以供比对。
• Please remove all jewelry and metal items (watch, rings, necklaces, earrings, hairpins, etc.) before the scan.
• Bring any related X-ray films, reports, or medical records for comparison.

九、女性病人与怀孕 | Female Patients & Pregnancy

• 电脑扫描涉及 辐射。若怀疑怀孕，请告知转介医生以评估是否需延后检查。
• 若月经周期超过 28 天，需进行尿液验孕测试。年龄超过 55 岁且已停经至少 2 年者可豁免。
• CT scans involve radiation. If you are or may be pregnant, please inform your doctor to assess the need for postponement.
• If your menstrual cycle exceeds 28 days, a urine pregnancy test may be required. Women aged over 55 who have been postmenopausal for at least 2 years are exempt.

十、检查风险与查询 | Risks & Enquiries

• 本指引仅概述常见注意事项，未涵盖所有可能之风险或并发症。若需个别医疗建议或具体评估，请联络本中心医护人员或转介医生。
• This leaflet provides general guidance only and may not cover all possible risks or complications. For further medical advice or personalised assessment, please consult our staff or your referring doctor.”