Treatment FAQ

how to read a radiation treatment plan

by Ashley Simonis DVM Published 2 years ago Updated 2 years ago
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What is involved in radiation therapy planning?

Treatment planning usually involves positioning your body, making marks on your skin and taking imaging scans. Your radiation therapy team determines whether you'll lie on your back, stomach or side during treatment. It's crucial to find a position that optimizes your treatment, but is comfortable enough to hold for 15 to 45 minutes.

What are the steps in radiation therapy?

1 Your radiation therapy team. A highly trained medical team will work together to provide you with the best possible care. ... 2 Before treatment. Meeting with your radiation oncologist. ... 3 During treatment. External-beam radiation therapy delivers radiation from a machine outside the body. ... 4 After treatment. ... 5 More Information

What does it mean to sign a radiation therapy document?

Signing the document means: Your team gave you information about your treatment options. You choose to have radiation therapy. You give permission for the health care professionals to deliver the treatment. You understand the treatment is not guaranteed to give the intended results. Simulating and planning treatment.

How do I choose the right position for radiation therapy?

Your radiation therapy team determines whether you'll lie on your back, stomach or side during treatment. It's crucial to find a position that optimizes your treatment, but is comfortable enough to hold for 15 to 45 minutes.

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How do you do a radiotherapy treatment plan?

Before you begin radiation treatment, your radiation therapy team carefully plans your treatment in a process called radiation simulation. Treatment planning usually involves positioning your body, making marks on your skin and taking imaging scans.

How do you evaluate a radiation plan?

Initially to ensure coverage, the plan should be evaluated qualitatively by review of structure and isodose contours on images. The prescription isodose line should cover its corresponding PTV, and inadequate coverage or excessive dose spillage outside the PTV should be identified and evaluated.

What is a normal radiation schedule?

The total dose of external radiation therapy is usually divided into smaller doses called fractions. Most patients get radiation treatments daily, 5 days a week (Monday through Friday) for 5 to 8 weeks. Weekend rest breaks allow time for normal cells to recover.

How does radiation therapy work step by step?

Overall, there are five basic steps of radiation therapy that we can share to give patients an idea of what to expect. These steps include initial consultation, simulation, treatment planning, treatment delivery and post treatment follow-up. Consultation is the first step of the radiation therapy process.

What is radiotherapy quality plan?

We understand plan quality in radiotherapy as the clinical suitability of the delivered dose distribution that can be realistically expected from a treatment plan. Plan quality is commonly assessed by evaluating the dose distribution calculated by the treatment planning system (TPS).

What is the basis of radiation planning?

Effective radiation treatment planning utilizing radiation is dependent upon three primary factors: dose, overall treatment time, and target coverage.

Is 6 weeks of radiation a lot?

Treatments are usually given five days a week for six to seven weeks. If the goal of treatment is palliative (to control symptoms) treatment will last 2-3 weeks in length. Using many small doses (fractions) for daily radiation, rather than a few large doses, helps to protect the healthy cells in the treatment area.

How is the number of radiation treatments determined?

Treatments are usually scheduled five days a week, Monday through Friday, and continue for one to 10 weeks. The number of radiation treatments you will need depends on the size, location and type of cancer you have, the intent of the treatment, your general health and other medical treatments you may be receiving.

Is there a limit to how much radiotherapy you can have?

There is a limit to the amount of radiation an area of your body can safely receive over the course of your lifetime. Depending on how much radiation an area has already been treated with, you may not be able to have radiation therapy to that area a second time.

How long is a session of radiotherapy?

In most instances, treatments are usually spread out over several weeks to allow your healthy cells to recover in between radiation therapy sessions. Expect each treatment session to last approximately 10 to 30 minutes.

Is radiation worse than chemo?

The radiation beams change the DNA makeup of the tumor, causing it to shrink or die. This type of cancer treatment has fewer side effects than chemotherapy since it only targets one area of the body.

What should you avoid during radiation?

Avoid raw vegetables and fruits, and other hard, dry foods such as chips or pretzels. It's also best to avoid salty, spicy or acidic foods if you are experiencing these symptoms. Your care team can recommend nutrient-based oral care solutions if you are experiencing mucositis or mouth sores caused by cancer treatment.

What is radiation simulation?

Before you begin radiation treatment, your radiation therapy team carefully plans your treatment in a process called radiation simulation . Treatment planning usually involves positioning your body, making marks on your skin and taking imaging scans.

How long should you hold your back during radiation?

It's crucial to find a position that optimizes your treatment, but is comfortable enough to hold for 15 to 45 minutes.

How much radiation should a pacemaker receive?

Ideally, pacemakers should not lie in the path of a treatment field and should only receive scattered radiation dose of less than 2 Gy . The cardiologist should be consulted to ascertain the required level of monitoring during and after the treatment.

What is the goal of external beam radiotherapy?

The goal of treatment planning of external beam radiotherapy is to produce a dose distribution within the patient that will destroy the tumour while sparing as much healthy tissue as possible. The planning role is usually carried out by radiographers, physicists, or technologists with expertise in producing either an optimum plan, or a selection of compromise plans for the clinician to approve. The planner must have sufficient clinical knowledge to understand where compromises may have to be made, either in sparing some of the target volume dose or in accepting higher than desirable doses to radiosensitive healthy tissue.

Why is it important to have the dose and dose per fraction available at the time of planning?

However, it is important to have the dose and dose per fraction available at the time of planning as the dose limits to critical structures will depend on the dose rate. Much of radiotherapy dose and fractionation is based largely on clinical results evaluated over decades.

What is the complexity of a treatment plan?

The complexity of a treatment plan is likely to increase, especially when an organ at risk (OAR), also referred to as a critical structure, lies adjacent to the planning target volume (PTV), and the prescribed dose greatly exceeds the tolerance dose of the OARs.

Can a complex plan increase the risk of errors?

Complex and non-standard plans can also increase the risk of errors. Where the treatment intent is palliation, for example relief from pain arising from metastatic disease, then a single treatment beam will usually fulfill the purpose.

LCRP dosimetrist explains the process of how your radiation therapy starts before you even get there

There’s a team at the Nancy N. and J.C. Lewis Cancer & Research Pavilion that you may never meet. But if your cancer diagnosis requires radiation therapy, they are the ones planning your treatment. Their commitment is to ensure the highest quality of care.

The process

It starts with a CT scan called a simulation. Imagines will be taken in preparation for planning the treatment. Those images will help the dosimetry team tailor the treatment to each patient’s body and the specific machine that they will be treated on. At the LCRP, those machines include the TrueBeam and CyberKnife.

The patient experience

If radiation treatment is needed, each patient can expect to go through a thorough planning process, Wynn says. Even patients with benign conditions that need radiation therapy will start treatment with a plan.

What to expect when getting radiation therapy?

What to Expect When Having Radiation Therapy. It is normal to feel worried or overwhelmed when you learn that you will need radiation therapy. However, learning more about this type of cancer treatment may help you feel more prepared and comfortable.

How often should you check for radiation?

During your treatment, your radiation oncologist will check how well it is working. Typically, this will happen at least once a week. If needed, they may adjust your treatment plan.

What type of doctor is responsible for radiation therapy?

Radiation oncologist. This type of doctor specializes in giving radiation therapy to treat cancer. A radiation oncologist oversees radiation therapy treatments. They work closely with other team members to develop the treatment plan. Radiation oncology nurse.

What is simulation in radiation therapy?

Simulating and planning treatment. Your first radiation therapy session is a simulation. This means it is a practice run without giving radiation therapy. Your team will use imaging scans to identify the tumor location.

How long does radiation therapy last?

It is the most common radiation therapy treatment for cancer. Each session is quick, lasting about 15 minutes. Radiation does not hurt, sting, or burn when it enters the body.

Why is it important to be in the same position for radiation?

It is important for your body to be in the same position for each treatment. Your radiation oncology team cares about your comfort. Talk with the team to find a comfortable position that you can be in every time you come in for radiation therapy.

What is informed consent for radiation?

Giving permission for radiation therapy. If you choose to receive radiation therapy, your health care team will ask you to sign an "informed consent" form. Signing the document means: Your team gave you information about your treatment options. You choose to have radiation therapy.

What is an IMRT statement?

They may include: A statement by the treating physician documenting the special need for performing IMRT on the beneficiary in question, rather than performing conventional or three-dimensional treatment planning and delivery. The physician must address the other organs at risk and/or adjacent critical structures.

Is a patient's medical record all inclusive?

It is expected that patient's medical records reflect the need for care/services provided. The listing of records is not all inclusive. Providers must ensure all necessary records are submitted to support services rendered. They may include:

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