Please choose the correct ending to complete the given sentence: Health: [header] How to prepare for a thyroid scan [title] Find out what kind of scan you're getting. [step] Before your scan, you should speak with your physician to see if you need to discontinue taking any of your medications or vitamins. There are some that can interfere with the results, so it's important to discontinue their use.

Ending1: [substeps] If a photograph is required, have your doctor do this. Make sure you've taken off all of your jewelry during the scan as this may also interfere with all of the negative data they may be sending to you. Ending2: You can simply tell them you don't feel well and that you need more medication. [substeps] In some cases, you can ask your physician about whether any supplements you take may interfere with what you're taking for the scan. Ending3: [title] Take a close look at your thyroid every 3 to 4 weeks. [step] Once your thyroid scan is complete, the results of your scan will be reviewed and more clinical testing will be conducted. Ending4: [substeps] These medications might include anti-thyroid medications and thyroid hormones. As these medications are used to treat your thyroid, they could affect the results of your scan.

Answer format: ending1/ending2/ending3/ending4