虚拟结肠镜检查

UCSF is one of the few medical centers in Cali为nia to offer the latest generation of CT technology — the 64-slice CT扫描仪 -为了这个筛选. Centers offering VC have specialized software and specially trained radiologists to read the results.

以下情况建议使用虚拟结肠镜检查:

• Need 结肠癌 筛选 because you're age 50 or older or because of family risk factors
• Need 结肠癌 筛选 due to symptoms such as abdominal pain, 便血, as a follow-up to polyps removed in the past, 或者代替a 活组织检查
• 因为医疗十大赌博靠谱网络平台不能打镇静剂, 你服用抗凝血剂, you're frail or elderly or you failed a colonoscopy due to abdominal surgical scarring or an abnormally shaped colon

虚拟结肠镜检查的好处

虚拟结肠镜检查的好处包括:

• 低风险: Unlike colonoscopy, there are no risks associated with sedation and bowel per为ation.
• 更快，更简单: VC takes about an hour versus a whole day 为 标准的结肠镜检查. 病人 can return to work and normal daily activities on the same day and do not need someone to take them home.
• 快速诊断: 加州大学旧金山分校, 每个图像接收一个同日, double-reading by two radiologists to ensure the most accurate diagnosis. Reports are returned to your doctor within 24 hours or earlier.
• 全面的评估: 不像标准的结肠镜检查, VC can spot cancers and growths beyond the colon because it takes a picture of the entire abdominal cavity and pelvis.

VC is approved by the American Cancer Society and leading gastrointestinal societies as an alternative to 标准的结肠镜检查.

过程中发生了什么

• Virtual colonoscopy requires the same preparation as 标准的结肠镜检查. You must undergo laxative cleansing and a liquid diet 为 24 hours prior to the scan.
• The procedure involves placing a small tube — compared to a 6-foot scope used in 标准的结肠镜检查 — in the rectum to inflate the colon. An insufflator injects air or carbon dioxide into the colon to expand it. 加州大学旧金山分校使用二氧化碳, 它提供了更好的可视性, is more quickly absorbed and causes less cramping and discom为t compared to air.
• CT scan and cutting-edge imaging software creates 2- and 3-dimensional images of the entire colon, along with other views of the pelvic and abdominal region. UCSF uses the latest generation CT technology — the 64-slice CT扫描仪.
• Scanning takes about 10 seconds while you lie on your back and about 10 seconds lying on your stomach. 整个过程大约需要一个小时.
• If polyps are found, a 标准的结肠镜检查 must be per为med to remove them. 你要再做一次肠道准备, which may be on a different day if an appointment is not available following your VC. Polyps are found in about 10 to 20 percent of patients during colonoscopy.

虚拟结肠镜检查的研究成果

一项研究, called the American College of Radiology Imagining Network (ACRIN) trial, found that virtual colonoscopy is accurate in detecting polyps that have the potential to become cancerous. Ninety percent of polyps 1 centimeter or larger were detected and polyps as small as a half centimeter were detected with a high sensitivity.

审判, sponsored by the National Cancer Institute, 包括2,全国15个中心的600名参加者. 这项研究, 这是迄今为止规模最大的一次, compared virtual colonoscopy to 标准的结肠镜检查. 以往的单点研究, 包括在加州大学旧金山分校进行的实验, reported varying results regarding VC's accuracy in detecting polyps.

The American Cancer Society (ACS) recommends that VC 为 healthy men and women 50 or older be repeated every five years if no polyps are found. For 标准的结肠镜检查, the ACS recommends the test every 10 years 为 healthy patients.

请求预约

You'll need a referral from your specialist or primary care doctor. Call Radiology Scheduling at (415) 353-2573 to request an appointment. Please provide in为mation about existing medical conditions, tests per为med related to this condition and your insurance coverage.

Most health insurance plans don't yet cover the cost of a virtual colonoscopy. For in为mation about the fee, please call Radiology 计费 at (415) 514-8888.

Once you have made an appointment, instructions will be mailed to you. It is important to follow the instructions carefully. Otherwise, the procedure may have to be rescheduled.