Johns Hopkins Sibley Proton Center - Virtual Tour

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Welcome to Sibley Memorial Hospital in Washington, D.C., part of Johns Hopkins Medicine. We have a distinguished history of serving our community since 1890. Johns Hopkins experts provides multi-disciplinary cancer here at the Johns Hopkins Proton Center and the Johns Hopkins Sidney Kimmel Cancer Center.

Welcome to the Johns Hopkins Proton Therapy Center at Sibley

Welcome to the Johns Hopkins Proton Therapy Center at Sibley

Sibley Memorial Hospital in Washington, D.C. is home to the Johns Hopkins Proton Therapy Center. Easily accessible from three major airports, we care for patients from all over the world.

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Proton Therapy Lobby and Waiting Area

Proton Therapy Lobby and Waiting Area

Our center has been carefully designed with a calm, inviting ambience. Our friendly care team works to help you, provide the treatment that you may need during your care journey and alleviate some of the stress that may come from having cancer.

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Keeping You Safe During COVID

To help prevent the spread of COVID-19, our doctors and care teams are taking extra precautions to make your visit as safe as possible. This includes physical distancing in the lobby and other areas; testing and screening of staff; use of masks and other personal protective equipment by our team members; special air filtration; and frequent cleaning and sanitizing of equipment.


Focused on You

Every member of our team is personally concerned about your wellbeing. They understand that each person is unique, and care is tailored specifically for your type of cancer and individual needs. Throughout your treatment, you have all of us ready to take care of your needs.


The Most Advanced Treatment Possible

We are one of the largest and most advanced proton centers in the U.S. With three treatment rooms and more than 30 specialists, our center combines the expertise of our team, innovative technology and advancements in research to provide better patient outcomes.

Private Treatment Rooms

Private Treatment Rooms

Our center has three private treatment rooms, using special 360 degree gantries to deliver proton therapy. These gantries ensure that you do not have to move, and that treatment is fast and painless for most patients.

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Multidisciplinary Team Ensures Most Accurate Treatment

Before treatment, physicists, dosimetrists, radiation therapists and your radiation oncologist will carefully review the location of your tumor and the dose that you will receive. At our center, real-time “onboard” imaging is used to verify your position during your treatment. This ensures millimeter precision with treatments and lowers the risk of excess radiation.


The Most Advanced Treatment Available

Proton therapy begins with a huge particle accelerator, known as a synchrotron, that spins protons at ultra-fast speeds before making their journey along a beam line to our treatment rooms.

Having 360° treatment gantries means that we can be very precise in our treatment, even in the hardest to reach areas. Using pencil beam scanning technology to steer the protons to the cancer, proton therapy is delivered with the most precision currently available, potentially sparing surrounding tissues and vital organs from excess radiation.


Getting into Position

A radiation therapist will help to position you on the treatment table, and high-tech equipment helps us to place you exactly where you need to be. Treatment is quiet, although you may hear small sounds.


Click to hear to a message from Dr. Curtiland Deville

Click to hear to a message from Dr. Curtiland Deville


Dedicated Research to Improve Your Outcome

Dedicated Research to Improve Your Outcome

At Johns Hopkins, we are not just focused on the best treatment, we are researching innovative ways to cure cancer.

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Translational Research

Translational research takes scientific discoveries in the lab and in clinical trials and transforms them into new treatments for patients. Johns Hopkins is constantly making new scientific discoveries.

Curing cancer is always our goal. While we search for a cure, our research gantry allows us to find new and innovative ways to use proton therapy, combined with other treatments, and quickly implement them to benefit patients.

Private Exam Room

Private Exam Room

Your proton therapy physician and health care team meets with you during your time in treatment. We remain in contact with your other doctors, including as needed a medical oncologist, surgical oncologist, primary care physician and/or pediatrician.

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What to Expect

On your first visit, you will meet with a proton therapy physician to talk about your unique needs. Together, we will develop a treatment plan to best treat your cancer.

When additional therapies will make a difference, Johns Hopkins experts from the Sidney Kimmel Comprehensive Cancer Center work together to develop your treatment plan.

Dedicated CT Simulator

Dedicated CT Simulator

Specifically visualizing the composition of each area of a tumor through the capability of dual-energy CT imaging gives our patients the most precise treatment possible.

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Targeting Your Tumor Before Treatment

Computerized Tomography (CT) imaging uses a combination of X-rays and computer technology to produce 3D images that are more detailed than standard X-rays. These images serve as the basis to create your treatment plan. Dual-energy CT uses two sets of images to more precisely determine the range of the proton beam and better focus the pencil beam technology, reducing the margin of any error that might exist.


Click to hear to a message from Dr. Akila Viswanathan

Click to hear to a message from Dr. Akila Viswanathan


Advanced Magnetic Resonance Imaging Simulator

Advanced Magnetic Resonance Imaging Simulator

Understanding the make-up of a tumor and the surrounding structures is critical to targeting tumors. Through 4D biomatrix MRI, we can now proactively plan for how to treat tumors that shift during treatment.

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Taking MRI Planning to the Next Level

Magnetic resonance imaging (MRI) produces detailed images of almost every internal structure in the human body – including organs, bones, muscles and blood vessels –using a large magnet and radio waves. MR images are used to precisely delineate the tumor and adjacent normal tissues. Image-based treatment planning with gating allows for better targeting of cancer, especially in moving tumors, such as those in the heart, lungs and abdomen, which move when breathing.

Proton Therapy Pediatric Program

Proton Therapy Pediatric Program

We focus on every aspect of pediatric care, from our dedicated team to a child-friendly environment. In collaboration with Children’s National Hospital, we are one of only a few dedicated proton therapy pediatric programs in the country.

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Special Expertise for Children

Johns Hopkins Medicine and Children’s National Hospital have collaborated to create one of the few dedicated pediatric proton therapy programs in the country. As national leaders in pediatric cancer care, we provide high-quality care for our youngest patients.


Click to hear to a message from Dr. Matt Ladra

Click to hear to a message from Dr. Matt Ladra



Letting Kids Be Kids

We know that cancer treatment can be difficult for your child to comprehend, which is why we created a center with a child’s perspective in mind. Our pediatric patients are separated from adult patients during their visits. The pediatric waiting room, nurses’ station and exam rooms have been thoughtfully designed to help your child feel more comfortable while in our center.

Our compassionate team interacts with your child on a level children can understand. We have a full-time child life specialist who works with children on a variety of needs.


Dedicated Multidisciplinary Pediatric Team

A multidisciplinary team is devoted to helping you and your child find the best treatments for a variety of pediatric cancers. Our team includes pediatric radiation oncology experts, pediatric nurses, nurse navigators and a child life specialist.


The Value of Proton Therapy for Children

In children, the ability to better steer protons to the cancer means that developing brains, hearts and lungs and growing bones can be better protected. Tumors that are close to vital organs — which in the small bodies of children can be many organs — in the brain, spine, chest, abdominal and pelvic regions are also well suited to proton therapy.

This is especially important for children who are growing. Proton therapy can reduce damage to development and IQ as well as decrease the chance for another cancer to develop years later as a result of treatment.

Pediatric Nursing Area

Pediatric Nursing Area

Our dedicated pediatric unit provides a variety of support for you and your child in a patient-friendly space.

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Making Children as Comfortable as Possible

Our child life specialist works with you and your child to prepare them for treatment. For small children, anesthesia is sometimes needed to help calm anxiety. We also find ways to ease a child’s anxiety through creative and natural approaches so that anesthesia may not be necessary.


Click to hear to a message from Dr. Anita Shea

Click to hear to a message from Dr. Anita Shea


Ringing The Bell

Ringing The Bell

A milestone event, every patient rings this bell on the last day of treatment. It is our way to celebrate the successful completion of treatment with you.

Sibley Meditation Garden

Sibley Meditation Garden

Conveniently located near the proton therapy center, many patients and families take advantage of the tranquility of our large meditation garden to destress while at Sibley

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Thanks To Our Donors

Thanks to our generous donors, patients and family members can enjoy the Sibley Meditation Garden, a serene place for rest and reflection. Many of the benches in the garden bear the names of our supporters. Please feel free to spend time here.

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