Hi,
New Information! 3/28/2014 Things have changed in the 3 years since I wrote this. I find my cancer center doesn't take as long to do the Octreoscan now. I had the 360 degree Spect done only at the end of the 24-hour scan. Also, the scanner goes faster, so the length of time is not as long. At Cedars-Sinai in Los Angeles,they do Octreoscans at 4, 24 and 72 hours. But the real news is that this scan is obsolete, and will be replaced by the 68-Gallium Dotatate PET/CT in a year or two in the USA. It is already used in Europe and Asia. I would recommend the newest scan there is and at the largest medical center you can get to.
Today I finished a round of Octreoscans, the nuclear medicine test for carcinoid and other endocrine tumors. Thank you for praying for my composure while I had all my "pictures" taken. I thought I would explain what happens when I go in for a scan. I don't think I've ever seen it spelled out, and I noticed someone found my blog by asking what an Octreoscan was. So I'll explain it from my perspective.
But first, I found a new verse today. I am almost done reading through Romans. This is Romans 15:13.
May the God of hope fill you with all joy and peace as you trust in Him, so that you may overflow with hope by the power of the Holy Spirit. That is how I want to live: To go on with my life as if I expect to live a "normal lifespan". To hope that I can do most of the things I want to get done and that I will enjoy the time while I am here. Also, to find my greatest joy in knowing Christ Jesus my Lord.
When I go in for an Octreoscan, I have to go off of the LAR (long-acting injection) of Octreotide for 8 weeks. I have to start giving myself the injections of Octreotide Acetate in my belly every 8 hours. Also, three days before the scans I have to stop
all Octreotide treatments because it can cause a false positive on the scan. Octreotide automatically goes straight to carcinoid tumors. It attaches to the tumors, and if it is in your body during the scan, then the radioactive Octreotide mixes with it and makes it appear that you have tumors. So all Octreotide has to clear out of your system before your scan.
The Octreoscan is a nuclear medicine test. I usually arrive about 9:15 am and get injected by 10:00 am with the radioactively-labelled Octreotide. I
don't have to fast, but I am supposed to drink plenty of water the day before and the day of the first scan. After having 5 Octreoscans I have learned that the "be well-hydrated" is code for "don't be constipated." The staff won't say that before you come in, but a couple of the technicians have told me that I should eat lightly (She suggested I just have soup and salad for supper) and drink lots of water, so that the bowel will be easier for the radiologist to see inside of. It's hard to see any tumors when the bowel is filled up.
Note: I have learned since writing this post that there is another reason for being well-hydrated. It helps to flush the radio-active material out of your body. So you need to be drinking water the day before and the day of the injection. This is the post that is read by someone every day, so I want to have correct information here. 1/11/11
The first set of scans is done 4 hours after the radioactive Octreotide is injected. So I sit and read, shop, have lunch, visit my daughter, etc. Back at the laboratory there are actually three sets of scans to go through. You can listen to a CD player or ipod as long as the headphones are made of plastic because you can attach them to your head, and leave the metal part out of the range of the scanner.
1. The first scan I have is always the Nuclear Gamma Camera. This takes about 1 hour for the full body scan. This does not emit any radiation; you emit the radiation! The camera detects the radiation and it shows up on the computer monitor the tech is looking at. It is normal for the liver, kidneys, bladder, spleen, etc. to light up from the radiation. It is the job of the radiologist to interpret what is abnormal absorption of of the radioactive Octreotide.
The first few times I had this scan I felt a little claustrophobic because the panel comes to an inch above my face. The good part is that you slowly scoot out from under the panel,and your face comes out first.
2. The second test I have is a 360 degree CT scan. This one is 30-40 minutes long. It's cool because the panels rotate around around your body. It is not claustrophobic because there's wide open spaces between the panels.
3. The last scan is a nuclear medicine scan. It's also 30-40 minutes and seems to go quickly after the other two,
The next day I come back again and go through the same scans. There's no more injecting the drug because the doctor is watching to see what happens 24 hours after the injection.