Refresher Training for X-Ray Equipment Operators
... Basic Components of X-ray Tube • Cathode – heated wire to produce large source of electrons and focusing cup to direct them • Anode – target of high atomic number struck by electrons to produce X-rays • Voltage supply – high voltage supply to accelerate electrons from cathode to anode • Envelope – ...
... Basic Components of X-ray Tube • Cathode – heated wire to produce large source of electrons and focusing cup to direct them • Anode – target of high atomic number struck by electrons to produce X-rays • Voltage supply – high voltage supply to accelerate electrons from cathode to anode • Envelope – ...
All patients will receive both EBRT and BT. Summation of EBRT and
... performed by calculation of a biologically equivalent dose in 2 Gy per fraction (EQD2) using the linear quadratic model with α/β = 10 Gy for tumour effects and α/β=3 Gy for late normal tissue damage.The repair half time is assumed to be 1.5 hrs. EBRT is delivered in accordance with specific defined ...
... performed by calculation of a biologically equivalent dose in 2 Gy per fraction (EQD2) using the linear quadratic model with α/β = 10 Gy for tumour effects and α/β=3 Gy for late normal tissue damage.The repair half time is assumed to be 1.5 hrs. EBRT is delivered in accordance with specific defined ...
click her - Universal Consultants, Inc.
... Basic Components of X-ray Tube • Cathode – heated wire to produce large source of electrons and focusing cup to direct them • Anode – target of high atomic number struck by electrons to produce X-rays • Voltage supply – high voltage supply to accelerate electrons from cathode to anode • Envelope – ...
... Basic Components of X-ray Tube • Cathode – heated wire to produce large source of electrons and focusing cup to direct them • Anode – target of high atomic number struck by electrons to produce X-rays • Voltage supply – high voltage supply to accelerate electrons from cathode to anode • Envelope – ...
lung cancer imaging in 2012 - Journal of the Belgian Society of
... Refinements in lung cancer therapy have also evolved rapidly. While new systemic drug therapy based on genetic analysis provide encouraging early results, non-resectable tumors may benefit from advances of radiation therapy and the more recent advent of percutaneous ablative therapy. New high precis ...
... Refinements in lung cancer therapy have also evolved rapidly. While new systemic drug therapy based on genetic analysis provide encouraging early results, non-resectable tumors may benefit from advances of radiation therapy and the more recent advent of percutaneous ablative therapy. New high precis ...
RADIATION PROTECTION IN PEDIATRIC RADIOGRAPHY
... exposure. When using automatic exposure, a middle ionization cell must be selected, due to the small investigation area. Also, accurate centering is of great significance, so that exposure may be interrupted on time. Close collimation on four sides onto the outer chest margins and shielding the gona ...
... exposure. When using automatic exposure, a middle ionization cell must be selected, due to the small investigation area. Also, accurate centering is of great significance, so that exposure may be interrupted on time. Close collimation on four sides onto the outer chest margins and shielding the gona ...
Enhancing Patient Safety in Today`s Healthcare
... with the increasing number of new applications and protocols, it is the responsibility of radiology practices to understand how to minimize radiation exposure while ensuring that diagnostic quality is not compromised. The acceptable image quality and noise level varies with the preference of the rad ...
... with the increasing number of new applications and protocols, it is the responsibility of radiology practices to understand how to minimize radiation exposure while ensuring that diagnostic quality is not compromised. The acceptable image quality and noise level varies with the preference of the rad ...
safe imaging at the joe buck imaging center
... Since children’s bodies are still developing, too much exposure can put them at risk for radiation-related health problems. ...
... Since children’s bodies are still developing, too much exposure can put them at risk for radiation-related health problems. ...
EL CAMINO COLLEGE RADIOLOGIC TECHNOLOGY PROGRAM
... treatment of disease by means of high energy x-rays (GAMMA) or radioactive substances ...
... treatment of disease by means of high energy x-rays (GAMMA) or radioactive substances ...
Shielding Of Medical Facilities. Shielding Design
... substantial lead shielding. • It is a good idea to have the hot bathroom, reserved for PET patients, within the immediate imaging area, so that they do not alter the background counts of other detection devices as they pass through the clinic. ...
... substantial lead shielding. • It is a good idea to have the hot bathroom, reserved for PET patients, within the immediate imaging area, so that they do not alter the background counts of other detection devices as they pass through the clinic. ...
Summary - Cancer Care Ontario
... appropriate to the staff member’s responsibilities, and treatment techniques and new developments in radiation oncology and brachytherapy. Radiation safety programs should include any hospital-based personnel involved with brachytherapy patients. Radiation oncologists, physicists, and associated bra ...
... appropriate to the staff member’s responsibilities, and treatment techniques and new developments in radiation oncology and brachytherapy. Radiation safety programs should include any hospital-based personnel involved with brachytherapy patients. Radiation oncologists, physicists, and associated bra ...
ABR 2011 Update
... • The 80 hours must contain content applicable • To the subject areas described in the regulations • To the use of Sodium I-131 • Low Dose Therapy • High Dose Therapy • The "classroom and laboratory training" can be fulfilled in settings other than the traditional classroom setting • Hands-on experi ...
... • The 80 hours must contain content applicable • To the subject areas described in the regulations • To the use of Sodium I-131 • Low Dose Therapy • High Dose Therapy • The "classroom and laboratory training" can be fulfilled in settings other than the traditional classroom setting • Hands-on experi ...
Radiation therapy
Radiation therapy or radiotherapy, often abbreviated RT, RTx, or XRT, is therapy using ionizing radiation, generally as part of cancer treatment to control or kill malignant cells. Radiation therapy may be curative in a number of types of cancer if they are localized to one area of the body. It may also be used as part of adjuvant therapy, to prevent tumor recurrence after surgery to remove a primary malignant tumor (for example, early stages of breast cancer). Radiation therapy is synergistic with chemotherapy, and has been used before, during, and after chemotherapy in susceptible cancers. The subspecialty of oncology that focuses on radiotherapy is called radiation oncology.Radiation therapy is commonly applied to the cancerous tumor because of its ability to control cell growth. Ionizing radiation works by damaging the DNA of cancerous tissue leading to cellular death. To spare normal tissues (such as skin or organs which radiation must pass through to treat the tumor), shaped radiation beams are aimed from several angles of exposure to intersect at the tumor, providing a much larger absorbed dose there than in the surrounding, healthy tissue. Besides the tumour itself, the radiation fields may also include the draining lymph nodes if they are clinically or radiologically involved with tumor, or if there is thought to be a risk of subclinical malignant spread. It is necessary to include a margin of normal tissue around the tumor to allow for uncertainties in daily set-up and internal tumor motion. These uncertainties can be caused by internal movement (for example, respiration and bladder filling) and movement of external skin marks relative to the tumor position.Radiation oncology is the medical specialty concerned with prescribing radiation, and is distinct from radiology, the use of radiation in medical imaging and diagnosis. Radiation may be prescribed by a radiation oncologist with intent to cure (""curative"") or for adjuvant therapy. It may also be used as palliative treatment (where cure is not possible and the aim is for local disease control or symptomatic relief) or as therapeutic treatment (where the therapy has survival benefit and it can be curative). It is also common to combine radiation therapy with surgery, chemotherapy, hormone therapy, immunotherapy or some mixture of the four. Most common cancer types can be treated with radiation therapy in some way.The precise treatment intent (curative, adjuvant, neoadjuvant, therapeutic, or palliative) will depend on the tumor type, location, and stage, as well as the general health of the patient. Total body irradiation (TBI) is a radiation therapy technique used to prepare the body to receive a bone marrow transplant. Brachytherapy, in which a radiation source is placed inside or next to the area requiring treatment, is another form of radiation therapy that minimizes exposure to healthy tissue during procedures to treat cancers of the breast, prostate and other organs.Radiation therapy has several applications in non-malignant conditions, such as the treatment of trigeminal neuralgia, acoustic neuromas, severe thyroid eye disease, pterygium, pigmented villonodular synovitis, and prevention of keloid scar growth, vascular restenosis, and heterotopic ossification. The use of radiation therapy in non-malignant conditions is limited partly by worries about the risk of radiation-induced cancers.