A PET/CT scanner combines the benefits of nuclear medicine with the clarity of x-ray imaging. For radiation oncologists, this means identifying the tumor in a patient, and knowing precisely where it is located. It’s a very powerful imaging modality, far superior in many cases to CT, X-Ray, or MRI, when dealing with cancer patients.
Although PET/CT is becoming an increasingly sought-after modality in radiation therapy, the relatively low patient load in the radiation therapy clinic makes the purchase of a PET/CT hard to justify for a practice. After all, a cancer patient will get one or two PET/CT scans during the course of a radiation therapy treatment, yet may require up to 30 or more daily treatments (fractions) on a linear accelerator.
The Elekta Gamma Knife Perfexion is a state-of the art machine which uses highly radioactive, but very well-controlled, sources to destroy tumors in the brain. It’s one of the technological wonders in the world of cancer treatment.
This machine needed removal/disposal from a major hospital in the United States, and ROS’s project management team came into action.
Radioactive sources decay over time, and eventually must be removed and disposed. In the case of this machine, all 192 cobalt-60 sources had to be carefully, professionally, and most importantly, safely, removed. This is no easy feat and requires considerable planning, specialized tools, strong regulatory oversight, and a high level of expertise in this type of equipment.
When buying a used or refurbished linear accelerator, how important are the HV hours, also known as “beam hours?”
Beam hours for linear accelerator are like the mileage on a car. They reflect the amount of time that beam has been on, and therefore are a good indication of the “wear and tear” on a particular machine.
Generally speaking, machines with higher beam hours will sell for less than those with lower beam hours, all other things being equal. Of course, there are dozens of other variables that influence the price of a linear accelerator, like the age, technologies and upgrades.
Adding or updating your facility’s linear accelerator (linac) is a decision with budgetary, space, and personnel impacts. In the following paragraphs, we hope to help you in your buying decision by explaining when it is better to seek a new linac and not a used model.
Every so often, we receive phone calls from hospitals or medical centers that need to have equipment removed in a big hurry. An MRI or linear accelerator project is usually planned months in advance, but every so often, circumstances require an expeditious removal.
R.O.S. to the rescue.
Recently, a customer in the Cayman Islands needed help in a hurry. A 2007 GE Profile Excite IV MRI System weighing 20,000 lbs., had to be removed in a hurry.
The result? On time, on budget, expeditious, professionally and safely executed, with a happy customer.
Antes de comprar un acelerador lineal de segunda mano, es importante identificar los tipos de tratamientos que ofrecerá a sus pacientes, tanto a corto como a largo plazo. Este gráfico le permite ver qué requisitos de hardware son generalmente necesarios para cada una de las diversas opciones de tratamiento. Hay excepciones a estos parámetros (por ejemplo, algunas instalaciones están haciendo SRS sin tasas de dosis más altas).
Before you purchase a pre-owned linear accelerator system, it is important to identify the types of treatments you will be offering to your patients, both in the short term and in the long term. This chart allows you to see what hardware requirements are generally necessary for each of the various treatment options. There are exceptions to these parameters (for example, some facilities are doing SRS without higher dose rates).
Linear accelerators have two different components that allow for images of the patient to be made while the patient is on the linear accelerator:
1. MV Imaging Devices. These devices, also referred to as EPIDs (Electronic Portal Imaging Devices), produce an image of the patient by the use of the mega voltage (MV) beam of radiation that the linear accelerator emits to treat the tumor(s).
2. KV Imaging Devices. These devices produce clearer, x-ray images of the patient through the use of an x-ray tube that is mounted onto the linear accelerator.
Linear accelerators have become increasingly more sophisticated over the last two decades. The advent of IMRT (intensity modulated radiation therapy), as well as CBCT (cone beam CT) and VMAT (volumetric arc therapy) means that more data is generated from the linear accelerator than ever before.
In order to keep all of the patient data organized, a Record and Verify System (R&V) should be used. An R&V system is simply a computer server and related software that organizes and stores all of the data that is fed into, or captured from, the linear accelerator and the related patient being treated.
Today proton therapy is more popular than ever before. Most major population hubs in the U.S. either have a proton center, are building one, or are thinking about building one. Choosing the right patient positioning laser system to use in a proton therapy center is key to delivering the most accurate and precise treatment possible.