All about arrays
Optune delivers therapy through 4 adhesive patches, called transducer arrays. These arrays are applied to your scalp.
Kim, an Optune® user and Patient Ambassador
How do I place the arrays?
Watch this video for a step-by-step guide on how to apply arrays, or you can read the steps below.
Preparing your skin
Shave your scalp closely with the electric razor provided in your starter kit.
After shaving, wash your scalp with a mild fragrance-free shampoo or dandruff shampoo.
Once your head is washed, wipe it using a sanitizing solution.
Make sure your head is completely dry before applying a new set of transducer arrays.
Applying the arrays
1 Gather supplies
Make sure you have 4 (2 black connections and 2 white connections) sealed transducer array packages.
2 Place array with black connector cable
Peel away the liner of a black transducer array. Place it flat on the front of the head according to the transducer array layout map you received from your doctor.
3 Place array with white connector cable
Next, repeat step 2 with the white transducer array, but this time on the side of your head. Ensure the ceramic discs do not overlap with another array’s tape.
4 Place remaining arrays
Place the remaining arrays in the same way as their corresponding colors according to your transducer array layout map.
5 Trim arrays and press firmly
Trim the portion around the edges of the array, if necessary, to securely fit them to the scalp and each other. Then press the transducer arrays firmly to the scalp.
Removing the arrays
1 Gently remove
Gently pull back on the edge of the array to avoid pulling the skin.
2 Loosen the arrays
Unplug the cords from the connector box and step into a warm shower to loosen and remove the arrays. Consider using baby oil to loosen the arrays further, if necessary. These tips come from other Optune users.
“The first time I did it, I was pretty nervous. But I was determined I was going to make it work. After that, I just know where the arrays go and I don’t worry so much about that eighth of an inch or quarter-inch that some people may worry about.” Sherry, Optune user and Patient Ambassador
How often should I change the arrays?
Transducer arrays must be changed at least 2 times per week (one set of arrays should not be worn for more than 4 days at a time). However, more frequent transducer array changes are recommended if:
Time-saving tips for array changes
- Prep the arrays ahead of time so they’re ready to be placed
- Create an array change area in your home so that all of your supplies can live in one place
Learn about managing arrays from those who have firsthand experience.
Caring for your skinGet skin care tips
Optune evening routineGet tips from users
Optune Buddy ProgramSchedule a chat
Important Safety Information
What is Optune® approved to treat?
Optune is a wearable, portable, FDA-approved device indicated to treat a type of brain cancer called glioblastoma multiforme (GBM) in adult patients 22 years of age or older.
Newly diagnosed GBM
If you have newly diagnosed GBM, Optune is used together with a chemotherapy called temozolomide (TMZ) if:
- Your cancer is confirmed by your healthcare professional AND
- You have had surgery to remove as much of the tumor as possible
If your tumor has come back, Optune can be used alone as an alternative to standard medical therapy if:
- You have tried surgery and radiation and they did not work or are no longer working AND
- You have tried chemotherapy and your GBM has been confirmed by your healthcare professional
Who should not use Optune?
Optune is not for everyone. Talk to your doctor if you have:
- An implanted medical device (programmable shunt), skull defect (missing bone with no replacement), or bullet fragment. Optune has not been tested in people with implanted electronic devices, which may cause the devices not to work properly, and Optune has not been tested in people with skull defects or bullet fragments, which may cause Optune not to work properly
- A known sensitivity to conductive hydrogels (the gel on the arrays placed on the scalp like the ones used on EKGs). When Optune comes into contact with the skin, it may cause more redness and itching or may rarely cause a life-threatening allergic reaction
Do not use Optune if you are pregnant or are planning to become pregnant. It is not known if Optune is safe or effective during pregnancy.
What should I know before using Optune?
Optune should only be used after receiving training from qualified personnel, such as your doctor, a nurse, or other medical staff who have completed a training course given by Novocure®, the maker of Optune.
- Do not use any parts that did not come with the Optune Treatment Kit sent to you by Novocure or given to you by your doctor
- Do not get the device or transducer arrays wet
- If you have an underlying serious skin condition on the scalp, discuss with your doctor whether this may prevent or temporarily interfere with Optune treatment
What are the possible side effects of Optune?
The most common side effects of Optune when used together with chemotherapy (temozolomide, or TMZ) were low blood platelet count, nausea, constipation, vomiting, tiredness, scalp irritation from the device, headache, seizure, and depression. The most common side effects when using Optune alone were scalp irritation (redness and itchiness) and headache. Other side effects were malaise, muscle twitching, fall and skin ulcers. Talk to your doctor if you have any of these side effects or questions.
Please click here for the Optune Instructions for Use (IFU) for complete information regarding the device’s indications, contraindications, warnings, and precautions.
On this site, patient and healthcare professional videos as well as all images labeled as Optune users, caregivers, or healthcare professionals depict actual patients, caregivers, and healthcare professionals. All other depictions of patients and caregivers are actor portrayals. Patient images reflect the health status of the patients at the time each photo was taken.