Call Us 817-263-4300
Get Updates COVID-19

Radiation Oncology

COMPASSION     •     EXPERIENCE     •     INNOVATION

Radiation oncology is the use of radiation to treat cancer.

Radiation can be used by itself, or in conjunction with other modalities to fight cancer. Through the use of images from CT scans, a computer program is used to plan the radiation therapy in a way to maximize destruction of the tumor and minimize side effects.

VSNT uses a linear accelerator with a multileaf collimater that is computer controlled to direct and form the radiation beam in such a fashion to put the radiation in the tumor and avoid normal tissue. This minimizes side effects associated with radiation therapy.

Depending on the type of tumor that is present, radiation may be used to eliminate the cancer, shrink the tumor, or provide pain relief for the patient. Radiation may be administered in a number of different protocols designed to accomplish the needs of the pet and pet owners, while maintaining a good quality of life for the patient.

We have found that most patients tolerate radiation therapy very well

The Linear Accelerator Advantage

VSNT uses a linear accelerator with a multileaf collimater that is computer controlled to direct and form the radiation beam in such a fashion to put the radiation in the tumor and avoid unaffected tissue. This allows a unique treatment tailored to each individual patient, with optimized outcomes, and minimized side effects.

Advanced Computerized Treatment Planning

VSNT utilizes advanced computerized treatment planning programs that comprise a major part of the overall treatment process. These planning programs allow our radiation oncologists to generate beam shapes and dose distributions that allow maximum tumor control while minimizing normal tissue complications.

Team Approach with Other Specialties

VSNT offers a custom-tailored treatment plan for each pet. Our unique team approach with other specialty team members including Medical Oncology, Radiation Oncology, and surgical services through Dallas Veterinary Surgical Center (located in our building) means your pet will receive the absolute best care.

Injection site sarcomas or vaccine associated sarcomas

These are locally aggressive tumors of cats that often recur following surgical removal. The average time for recurrence following surgical excision is 3 months. When surgery and radiation therapy are combined to treat this disease the median survival time is extended to two years. This is a tumor in which preoperative radiation therapy is considered optimal. Please consult a veterinary radiation oncologist to discuss further treatment options.

Mast cell tumors

Mast cell tumors are one of the most common skin tumors in the dog. Wide surgical excision with 3 cm margins is often curative for grade 1 and grade 2 mast cell tumors. If a wide surgical excision is not possible radiation therapy is used to control this tumor. Studies have shown that 88% of dogs treated with a combination of surgery and radiation therapy are disease-free at 5 years following treatment.

Meningiomas

These are the most common brain tumor seen in dogs. Treatment options consist of surgery, radiation therapy, or a combination of the two. A recent study has shown that the median survival time for dogs with meningiomas treated with radiation therapy is 20 months.

Nasal tumors

These tumors in the dog are often diagnosed after chronic nasal discharge. Skull radiographs or CT scans can be suggestive of a nasal tumor, however, the diagnosis can only be confirmed with a biopsy. The treatment of choice for nasal tumors is radiation therapy. Studies have shown that dogs with nasal tumors treated with radiation therapy have a median survival time of 1.3 years. Please consult with a veterinary radiation oncologist to discuss treatment options.

Oral melanomas

These are the most common oral tumor in the dog. The traditional treatment for this disease consists of a combination of surgery and radiation therapy. Studies have described a median survival time ranging from 8 months to one year following radiation therapy. A vaccine has recently become available–the oral melanoma vaccine is used in an attempt to prevent the spread of the tumor. It is important that local control of the tumor be achieved with a combination of surgery and radiation therapy prior to the administration of the vaccine.

Soft tissue sarcomas

These consist of a group of tumors that share a similar biological behavior and a similar response to treatment. This group includes tumors such as fibrosarcomas, hemangiopericytomas, nerve sheath tumors, and myxosarcomas. Soft tissue sarcomas are locally invasive and rarely spread to other parts of the body. Surgical excision with 3-cm margins can be curative. If wide surgical margins are not possible radiation therapy is used control this tumor. Studies have shown that 76% of patients treated with a combination of surgery and radiation therapy are disease-free 5 years following the completion of treatment.