- General Consultation.
- Intracranial (SRS) and extracranial stereotactic radiotherapy (SBRT).
- Intensity modulated radiation therapy (IMRT).
- Intraoperative radiotherapy (IORT).
- Lattice radiotherapy.
- QUAD Shot Radiotherapy.
Dr. Rolando Loría Ruiz offers innovative and specialized oncological treatments, as well as exceptional care to provide the best experience for the patient. From prevention, diagnosis, treatment and follow-up, the Doctor will guide you in everything you need to do and know to face this disease in the best possible way.
Stereotactic Radiation Therapy
At high doses, radiation therapy destroys cancer cells or slows their growth by damaging their DNA. Cancer cells whose DNA is irreparably damaged stop dividing or die.
This technique must be used with high precision to avoid damage to healthy organs around the lesion. Special devices are required to be accurate when firing the radiation beam. This technique can be used on lesions in the brain or other parts of the body such as the liver, lung, pancreas, bone, prostate gland or kidneys to name a few.
This technique is also known as radiosurgery and in some texts, it can be found with its acronym SRS for procedures exclusively in the brain or SBRT for the application of this technique in other parts of the body.
This is a very precise technique used in the operating room, at the same time as surgery is performed; for tumors such as breast, sarcomas, pancreatic cancer, gastric cancer or other pathologies of the abdominal cavity. It consists of harmonizing the surgical act immediately followed by the application of radiotherapy at the same operative time.
The high dose of radiation that can be applied with this technique, described in hundreds of medical publications; excellent rates of disease control in the population of people with cancer who meet certain specific characteristics that may qualify to be candidates for this treatment.
In Costa Rica, the experience in the treatment of women with early stage breast cancer has been satisfactory, reducing the number of external radiotherapy sessions from 5 or 3 weeks, to a few minutes in a single session, without compromising the skin, lung, heart or other intrathoracic structures.
It is a technique in which radiation beams are applied in small spheres designed within a large lesion. In these lesions of more than 8 cm, the specialist in radiation oncology designs spheres of 1 cubic cm inside the tumor volume in order to deliver radiation doses between 18 to 30 Gy in one or three consecutive days, causing in the irradiated cancerous tissue, the appearance of substances such as radical species of oxygen or nitrogen that will contribute to the death of the areas of the tumor not exposed to radiation.
Intensity Modulated Radiation Therapy (IMRT)
This technique is considered to be the current minimum standard with which external beam radiation therapy treatments should be applied, either in conventional (many days of treatment [5 to 7 weeks]) or moderate hypofractionated schemes, where fewer days of treatment are required (on average 3 weeks).
Radiation therapy does not immediately destroy cancer cells. It takes days or weeks of treatment before the DNA is damaged enough for the cancer cells to die. The cancer cells then continue to die (apoptosis or cell necrosis) weeks or months after the end of radiation therapy.
External intensity-modulated radiation therapy consists of the application of ionizing energies generated from equipment known as linear accelerators, which use sophisticated devices that accelerate electrons to speeds close to light and make them collide against a metallic material, usually tungsten, to generate photons.
Photons are responsible for delivering the radiation dose when they interact with biological matter, i.e., our body. The high precision of how the photons are delivered or collide with our body is what allows the high rates of local disease control without compromising the surrounding healthy tissue.
Intensity-modulated radiation therapy (IMRT) is currently the most precise technique for conventional treatments. A variant of this technique is intensity-modulated radiation therapy (VMAT).
QUAD Shot Radiotherapy
This radiation technique is indicated in cases of head and neck tumors, where the tissue has been previously exposed to radiotherapy and surgery is not an alternative for local control of the disease. Two daily sessions of radiotherapy are applied, at a moderate dose each treatment fraction, on two consecutive days, this should be repeated every two or three weeks, until completing three cycles. In circumstances where therapeutic options have been exhausted, QUAD Shot radiotherapy has shown quite satisfactory local control results.
Dr. Rolando Loría Ruiz is a specialist in radiation oncology of great trajectory and recognized in Costa Rica for his preparation and dedication to his patients.