Understand Thyroid Scan - Dr.Tanvi Mayur Patel

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how Thyroid Scan is done and interpreted by Dr.Tanvi Mayur Patel
Timestamp & Chapters
0:00 Introduction of topic
0:45 link for hindi language
1:17 what is thyroid scan
2:16 history of thyroid scan
2:35 Advantages
3:42 Where is the scan done
4:03 is hospitalisation needed ?
4:45 team of drs before doing the scan
5:32 equipment used for thyroid scan
7:24 indications for thyroid scan
11:26 contraindications
12:58 preparations before scan
17:05 how scan is done
22:16 What is the radiation dose
24:16 report interpretation
thyroid scan is functional nuclear medicine study used to assess the activity of the thyroid.
other names -Thyroid scan (Tc-99m) ,technetium scan ,Tc-99m pertechnetate thyroid scan, scintigraphy
Earlier thyroid scans were done with radioactive iodine. It is replaced by technetium (Tc- 99m) scan
Advantages - chaper, lower radiation dose , unlike iodine, pertechnetate anion is not incorporated into thyroid hormones., short half life 6 hrs so rapidly eliminated
it is done in nuclear medicine department of hospital and no hospitalisation is needed
No need to enter inside any machine
it is Not a primary investigation.
OTHER test- thyroid function tests (TSH, T4 and T3, thyroglobulin, TSI, TPOAb), ultrasound
Indications
Size and Shape of Thyroid, To know Thyroid activities
Differentiate from Hyperthyroidism and Hypothyroidism
To know cause of Hyperthyroidism
Differentiate from benign and malignant nodule
After thyroid surgery
Metastatic of thyroid cancer
Retrosternal goiter
Contraindication
Pregnancy ,Breastfeeding women ,Allergy to Chemical, History of CT scan requiring IV iodine contrast medium in previous 6 to 8 week, medicines continued like lithium and amiodarone
preparation before thyroid scan
low iodine salt, low iodine diet, avoid iodine supplements
stop medicines like levothyroxine, liothyronine, carbimazole and propylthiouracil, amiodarone, lithium
if you had (CT) scan IV iodine contrast than wait for at least 6-8 weeks.
check if pregnant or if you are breast-feeding.
if not sure do urine pregnancy test, beta hcg on the day of test
How does the test performed ?
fast for 4 hours prior to exam
carry medical file and documents
carry medicines
wear loose clothes and half sleeves/ sleeveless.
to remove neck jewellery.
expect the whole process to take 45-60 minutes
A nuclear medicine specialist may wish to examine your neck
body position - lying down on a bed and the camera will be positioned very close over your head, but will not touch you.( gap of 20cm )
If u can't lie down than sitting can be advised.
sodium pertechnetate is injected intravenously into arm and wait for 15 mins
during this time it will concentrate in the thyroid gland.after that images of the thyroid are obtained with a scintillation camera . radionuclide emits gamma rays (photons) at a predictable rate.
The camera is set to detect a predetermined minimum number of photons.
Images are usually obtained from anterior, left anterior oblique and right anterior oblique projections Two anterior images are usually taken. camera may move slightly during this time. It is important you lie very still and try not to swallow during this time, as movement will blur the pictures.
What is the radiation dose?
Radiation dose is measured in units of millisieverts (mSv). it is approximately 3.2 mSv.
no known associated risks. The dose of radiation you will be receiving is relatively small
No hospital stay
After the scan they will be able to drive and resume a normal diet and activities.
Increased uptake-- Graves disease,Hashitoxicosis
Normal uptakeHashimoto disease, following I-131 therapy
Decreased uptake--excess iodine intake,amiodarone, high iodine diet, iodinated contrast, subacure thyoiditis, Struma ovaii, Hashimoto disease
Abnormal site of uptake- ectopic thyroid, lingual thyroid, Retrosternal goiter
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Please Note :
This video is for Educational purpose only. We strongly recommend to consult your Doctor/ Physician before taking any medication/Supplementation .
All Contents by Speech & Video by : Dr. Tanvi Mayur Patel
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[@gurkirat1]

My daughter is 16 years old and she gone through the surgery of thyroid and full thyroid gland remove and she is know going through this iodine scan . Plz tell wat are the future side effects?

[@sonytufa7875]

Mam i did thauroid scan RAIU test after 1 month later i am goin to pregnant. Now will it harm to my baby?

[@dariuslyngdoh6013]

Mam are there any spray or ointment to shrink thyroid?

[@DrTanviMayurPatel]

no
Give your feedback on g.page/DrTanviMayurPatel/review
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[@altafkhan5659]

Hello Ma’am
My mom has gone through Thyroid surgery for cancer and after surgery she is been advised to undergo RMC SCAN however dietician didn’t advice to stop eating any non veg however Radioilogist advised one week before the scan to stop eating all non veg food in her meal .. she has given some kinds of medicine before going through this test however scanning did not go successful and radiologist ask to come after 3 month wanted to know how long that medicine which was given to her while performing scanning will be there in her body and what are the side effects and how soon she can perform next scanning .. meanwhile is there any chances of her cancer cell may grow or what will be be situation .. your advice will be very helpful thanks

[@DrTanviMayurPatel]

th-cam.com/video/FWcBea8kxPw/w-d-xo.html this video will help you

[@dariuslyngdoh6013]

Mam my Tsh is 0.07 miu/ gl and T4 is 12 . Can RAI be done?

[@DrTanviMayurPatel]

your treating dr can guide u on it. i dont know ur medical case
Thank you and welcome
Give your feedback on g.page/DrTanviMayurPatel/review
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[@thetruthofislam479]

My mother had papillary thyroid carcinoma and got total thyroid removal.
My doctor suggested to get I-131 scan.
After taking medicine, when will they do i-131 scan? I mean on same day or other day?
What will be the cost for i-131 medicine and scan?
Please reply doctor

[@DrTanviMayurPatel]

You watch the video... I gave covered almost all points

[@dariuslyngdoh6013]

Mam can RAI be done when Tsh is low and T4 high?

[@DrTanviMayurPatel]

how much low ?
Thank you and welcome
Give your feedback on g.page/DrTanviMayurPatel/review
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[@bajrangbaliji543]

Mam I have tsh 0.01 and undergone thyroid scan where
Overall Tco4 uptake is 0.2
Uptake rate total 0.2 %
Right 0.1
Left 0.1
Right/left 0.9

[@DrTanviMayurPatel]

ok

[@JanakChhetri-dv5cn]

🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼Dr.. Sujabko lagi hindima

[@DrTanviMayurPatel]

🙏

[@ripaakther4157]

Is thyroid scan safe or harmful for patients?? Plssss reply maam

[@DrTanviMayurPatel]

Safe
follow me on Instagram: instagram.com/drtanvimayurpatel
Take care of your health.

[@harithaethakoti1369]

My tsh is 44 am using 100 mg is it ok

[@DrTanviMayurPatel]

Follow your Dr prescription

[@madhupapneja9630]

Hindi

[@DrTanviMayurPatel]

th-cam.com/video/Ix2dD7pf7aw/w-d-xo.html

[@tina671]

Hyperthyroid he or weight gain nahi ho rha he....

[@DrTanviMayurPatel]

amzn.to/3aJGXF2 ye le sakte hai weight gain ke liye