Conveners
Section 8. Nuclear medicine
- Nikolai Maltcev (St. Petersburg State University (RU))
Section 8. Nuclear medicine
- Andrey Seryakov (St Petersburg State University (RU))
At NRC “KI” - PNPI (National Research Center “Kurchatov Institute” - Petersburg Nuclear Physics Institute) the cyclotron C-80 capable of producing 40–80 MeV proton beam with a current of 100 $\mu$A has been constructed. One of the main goals of C-80 is production of a wide spectrum of medical radionuclides for diagnostics and therapy. A special beam line will be erected as well for the...
The study of dose transmission is a vital topic because the number of patients who have developed delayed radiation injuries increases every year [2,3].
Recently commissioned linear accelerator Varian Halcyon V1.0 (Varian Medical Systems, Palo Alto, Calif., USA) without collimation shutters is now gaining popularity in oncology clinics. The Halcyon MLC System features the stacked and...
Author: Vladimir Skorkin
Institute for Nuclear Research, Russian Academy of Sciences, Moscow, Russia
Corresponding Author: skorkin@inr.ru
Contrast-enhanced radiotherapy allows to enhance the radiation dose absorbed by the tumor when using the hard elements (I, Gd, Au, Bi, etc.) for a photon absorption [1]. The dose-enhancing agents have a better absorption capacity, than biological tissues...
It has been a constant research endeavor to find new ways of producing radionuclides for diagnostic and therapeutic purposes in nuclear medicine. The research area has ever grown due to technological developments and facilities like heavy-ion accelerators. The iodine isotopes e.g., $^{131}$I has been widely used as a radiotracer for thyroid-related diseases. This neutron-rich isotope...
The report contains a description of the SPECT system based on the Timepix detector with a coding aperture developed at DLNP JINR. Using a semiconductor pixeled detector with CdTe sensor and Timepix readout chip allows conduct research using multinuclide radiopharmaceuticals with high energy and submillimeter spatial resolution for laboratory animals. Are given the main characteristics of the...
Observance of the uniformity of the dose distribution over the volume of the irradiated object is an urgent task in the field of sterilization of medical devices. Under-irradiation can lead to the non-sterility of the processed object. Over-irradiated leads to unwanted chemical changes in the object.
Most medical devices have a complex shape, so this must be taken into account when selecting...
For cancer treatment medical linear accelerators are applied to be using for creation of electron beams and bremsstrahlung radiation. When a beam of bremsstrahlung photons with energies above 8 MeV interacts with the structural elements of the accelerator, photonuclear reactions occur, as a result of which secondary particles, mainly neutrons, are formed. This radiation may cause an additional...
Radiation therapy plays a significant role in the treatment of cancer. In recent years, radiation therapy techniques have begun to be introduced, which make it possible to control the position of the tumor directly during the irradiation process, reducing the procedure time and minimizing the negative impact on the patient. An example of combining diagnostics and radiation therapy is the...
MRI has now become the preferred choice in many clinical trials due to its superior ability to distinguish one tissue type from another. However, the likelihood of geometric distortion (distortion) present in MR images limits the use of MRI in some areas where high accuracy is required.
The main sources of geometric distortion from MRI equipment are inhomogeneity in the main magnet,...
We calculated specific absorbed fractions (SAF) to estimate absorbed doses in the breast tissue of adult female. Reference adult female phantom was used as a model of the body. An in-house program was written to convert the phantom to the format suitable for Monte-Carlo simulations.
SAF from monoenergetic radiation were calculated. They were adjusted to masses of organs and tissues that...
Relevance of this work is defined by constantly increasing need of practical medicine in plastic material for carrying out restorative surgical interventions in traumatology, orthopedics, maxillofacial, military field surgery and other fields [1]. The most important part of the process of obtaining an effective plastic material is sterilization. The innovative development of perspective...
The new model of the Leksell Gamma Knife Icon (LOL Icon) is equipped with additional features for fractionated radiation with masked fixation of the patient's head, namely, a cone-beam computed tomography (CBCT). LGK Icon allows to perform CBCT for frame-based radiosurgical treatment as well. This is not a mandatory stage, but it can be an alternative method of defining stereotactic space and...
