Efficiency in CT SOMATOM Emotion
... The desire for as little radiation exposure as possible lies at the heart of our CARE research and development philosophy. Based on this, we have developed a wide range of dose-reduction solutions that provide exceptional image quality at the lowest possible dose. With the SOMATOM Emotion, saving do ...
... The desire for as little radiation exposure as possible lies at the heart of our CARE research and development philosophy. Based on this, we have developed a wide range of dose-reduction solutions that provide exceptional image quality at the lowest possible dose. With the SOMATOM Emotion, saving do ...
Staging Moments Melanoma Case 1
... – cM0 – use clinical M with pathologic staging unless there is pathologic confirmation of distant metastases ...
... – cM0 – use clinical M with pathologic staging unless there is pathologic confirmation of distant metastases ...
Radiation safety and CT dose
... Safety culture Promote safety culture for safe use of diagnostic radiation Additional recommendations Endorse national radiation dose tracking registry Encourage manufacturers to incorporate dosage safeguards into EMR and national dose registry Support stricter regulations to eliminate avoid ...
... Safety culture Promote safety culture for safe use of diagnostic radiation Additional recommendations Endorse national radiation dose tracking registry Encourage manufacturers to incorporate dosage safeguards into EMR and national dose registry Support stricter regulations to eliminate avoid ...
Staging Moments Breast Case 1
... • Synopsis- patient with 0.5cm DCIS and a 1mm infiltrating duct ca, no nodes removed • What is the pathologic stage? (remember, clinical M may be used in pathologic staging) ...
... • Synopsis- patient with 0.5cm DCIS and a 1mm infiltrating duct ca, no nodes removed • What is the pathologic stage? (remember, clinical M may be used in pathologic staging) ...
The importance of diffusion-weighted imaging (DWI) for delineating
... information to the radiologist when formulating a differential diagnosis of a cerebral mass lesion. There are also growing applications in differentiating tumors such as glioblastoma primary cerebral lymphoma, and metastasis4. The importance of diffusion-weighted imaging (DWI) for delineating acute ...
... information to the radiologist when formulating a differential diagnosis of a cerebral mass lesion. There are also growing applications in differentiating tumors such as glioblastoma primary cerebral lymphoma, and metastasis4. The importance of diffusion-weighted imaging (DWI) for delineating acute ...
Best Practices in Computerized Tomography
... (kVp), the pitch, and slice thickness parameters can be adjusted to get the best images at the lowest possible radiation dose. Both the ACR and the AAPM have published reference values for the CTDIvol by body region so that radiologists and radiologic technologists can judge the CT scanner’s perform ...
... (kVp), the pitch, and slice thickness parameters can be adjusted to get the best images at the lowest possible radiation dose. Both the ACR and the AAPM have published reference values for the CTDIvol by body region so that radiologists and radiologic technologists can judge the CT scanner’s perform ...
12 Patient Immobilization and Image Guidance
... between internal and set-up margin, it is at least in principal possible to determine the internal margin by using time-resolved imaging, such as four-dimensional CT (4DCT) scanning (Rietzel et al. 2005, Hugo et al. 2007). This allows the creation of an internal target volume (ITV) (ICRU 1999). The ...
... between internal and set-up margin, it is at least in principal possible to determine the internal margin by using time-resolved imaging, such as four-dimensional CT (4DCT) scanning (Rietzel et al. 2005, Hugo et al. 2007). This allows the creation of an internal target volume (ITV) (ICRU 1999). The ...
Radiation Protection 109
... After the DRLs have been established, the patient dose either in standard phantoms or groups of standard-sized patients should be assessed on equipment in every room of every radiological facility periodically, with the long-term aim of annual assessments, and after every major change or servic ...
... After the DRLs have been established, the patient dose either in standard phantoms or groups of standard-sized patients should be assessed on equipment in every room of every radiological facility periodically, with the long-term aim of annual assessments, and after every major change or servic ...
Maximum performance for high-end cardiac imaging with
... in routine imaging, they are especially excited about its cardiac capabilities. “There is not a single image that I cannot interpret,” Philippe Durand points out. “Before, there was at least on per session.” “There are no discussions with colleagues any more. The results are very good and the qualit ...
... in routine imaging, they are especially excited about its cardiac capabilities. “There is not a single image that I cannot interpret,” Philippe Durand points out. “Before, there was at least on per session.” “There are no discussions with colleagues any more. The results are very good and the qualit ...
Dynamic Targeting IGRT What`s Next?
... database and retooled user interface. New IMRT quality assurance software was developed to cut the time for plan verification from several hours to 15 minutes. Combining technologies from our Ginzton Technology Center, our X-Ray Products business, and our Oncology Systems business, we developed impo ...
... database and retooled user interface. New IMRT quality assurance software was developed to cut the time for plan verification from several hours to 15 minutes. Combining technologies from our Ginzton Technology Center, our X-Ray Products business, and our Oncology Systems business, we developed impo ...
Complications and post-transplant follow-up - 公務出國報告
... performed for 6 patients with residual tumors, and two successive transcatheter arterial chemoembolizations (TACE) were performed for one patient with residual tumor. Twenty-three (85.2%) of the 27 patients were treated exclusively with radiofrequency ablation. Based on pre-transplant CT or MR imagi ...
... performed for 6 patients with residual tumors, and two successive transcatheter arterial chemoembolizations (TACE) were performed for one patient with residual tumor. Twenty-three (85.2%) of the 27 patients were treated exclusively with radiofrequency ablation. Based on pre-transplant CT or MR imagi ...
Magnetic Resonance Spectroscopy
... Combined MRI and MRS to diagnose the type of pediatric brain tumor was reported in 2015 from multicenter Children’s Hospitals in the U.S.[8] MRI/MRS imaging was performed in 120 pediatric patients as part of the usual pre-surgical workup, followed by biopsy or resection. Pediatric brain tumors are ...
... Combined MRI and MRS to diagnose the type of pediatric brain tumor was reported in 2015 from multicenter Children’s Hospitals in the U.S.[8] MRI/MRS imaging was performed in 120 pediatric patients as part of the usual pre-surgical workup, followed by biopsy or resection. Pediatric brain tumors are ...
radiologic-Pathologic analysis of contrast
... Figure 1: (a) Flowchart of study design. Chart summarizes patient selection, exclusion criteria, and assessment techniques. Patients who received systemic or local-regional liver-targeted therapies other than TACE (n = 12) were excluded to avoid any non-TACE–related tumor response and/or necrosis. ...
... Figure 1: (a) Flowchart of study design. Chart summarizes patient selection, exclusion criteria, and assessment techniques. Patients who received systemic or local-regional liver-targeted therapies other than TACE (n = 12) were excluded to avoid any non-TACE–related tumor response and/or necrosis. ...
Educational Objectives TG113: Improving Treatment Consistency and Data Quality for Clinical Trials
... multileaf collimator leaves was shown to result in dosimetric errors up to: ...
... multileaf collimator leaves was shown to result in dosimetric errors up to: ...
DETECTORS FOR IMAGING IN RADIATION THERAPY
... “Clinical use of electronic portal imaging: report of AAPM radiation therapy committee task group 58”, ...
... “Clinical use of electronic portal imaging: report of AAPM radiation therapy committee task group 58”, ...
File Ref.No.38933/GA - IV - J2/2013/CU UNIVERSITY OF CALICUT
... The Board of Studies in Radiation Physics, vide paper read as (3), resolved to approve the Revised Syllabus of MSc programme in Radiation Physics under CCSS (PG) in the University Teaching Department, with effect from 2013 admissions. The Dean Faculty of Science recommended to implement the resoluti ...
... The Board of Studies in Radiation Physics, vide paper read as (3), resolved to approve the Revised Syllabus of MSc programme in Radiation Physics under CCSS (PG) in the University Teaching Department, with effect from 2013 admissions. The Dean Faculty of Science recommended to implement the resoluti ...
Functional Lung Imaging in Thoracic Cancer Radiotherapy
... is frequently employed as part of the treatment. However, radiation must traverse surrounding regions of normal lung, potentially inducing pulmonary toxicity. Because these patients frequently have underlying lung disease, a radiation-induced decrement in lung function could be highly morbid or even ...
... is frequently employed as part of the treatment. However, radiation must traverse surrounding regions of normal lung, potentially inducing pulmonary toxicity. Because these patients frequently have underlying lung disease, a radiation-induced decrement in lung function could be highly morbid or even ...
Full Text
... Background: Percutaneous cryoablation is a minimally invasive alternative for surgical resection of a renal tumor. We report our experience with applying computed tomography-guided cryoablation in renal tumors, focusing on the technique, safety, and treatment response. Methods: We retrospectively re ...
... Background: Percutaneous cryoablation is a minimally invasive alternative for surgical resection of a renal tumor. We report our experience with applying computed tomography-guided cryoablation in renal tumors, focusing on the technique, safety, and treatment response. Methods: We retrospectively re ...
16. System Interfaces
... delivery mode. TomoDirect allows creation of treatment plans that include between 2 and 12 target-specific gantry angles. TomoDirect complements TomoHelical in situations where a fixed-angle delivery is most appropriate. During treatment delivery, beams are delivered sequentially with the couch pass ...
... delivery mode. TomoDirect allows creation of treatment plans that include between 2 and 12 target-specific gantry angles. TomoDirect complements TomoHelical in situations where a fixed-angle delivery is most appropriate. During treatment delivery, beams are delivered sequentially with the couch pass ...
How to Create a World Class Dose Reduction Program
... these types of questions to ensure that the gains achieved through enhancing hardware, software, protocols, positioning, etc are not undone by poor prescribing behavior. Communicating the existence, purpose and results of the program to patients and the surrounding community is also a valuable under ...
... these types of questions to ensure that the gains achieved through enhancing hardware, software, protocols, positioning, etc are not undone by poor prescribing behavior. Communicating the existence, purpose and results of the program to patients and the surrounding community is also a valuable under ...
+++Imaging and Radiology - EMSC Innovation and Improvement
... studies) come with potential risks for children, including cancer. Other issues such as sedation, contrast media allergies, potential pregnancy, claustrophobia, and patient motion may also be relevant. Because emergency medicine (EM) physicians are often responsible for requesting imaging evaluation ...
... studies) come with potential risks for children, including cancer. Other issues such as sedation, contrast media allergies, potential pregnancy, claustrophobia, and patient motion may also be relevant. Because emergency medicine (EM) physicians are often responsible for requesting imaging evaluation ...
Imaging Modalities in Brain Tumors
... brighter than the surrounding normal brain tissue due to the shortening of T1 relaxation time. However, histologic examination of samples obtained of patients with brain tumors showed that there are regions with tumor cells outside the Gd-enhancing area. The accepted standard dose for Gd is 0.1 mmo ...
... brighter than the surrounding normal brain tissue due to the shortening of T1 relaxation time. However, histologic examination of samples obtained of patients with brain tumors showed that there are regions with tumor cells outside the Gd-enhancing area. The accepted standard dose for Gd is 0.1 mmo ...
MINISTRY OF EDUCATION AND SCIENCE OF THE RUSSIAN
... tools Learning outcomes of the discipline necessary for the formation of competence or part ...
... tools Learning outcomes of the discipline necessary for the formation of competence or part ...
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... imaging that uses radionuclides/ radioisotopes and depends on the process of radioactive decay in the diagnosis and treatment of disease. It is a broad term that covers many imaging techniques with the common basis, since ionizing radiation originating within the body is detected and then imaged so ...
... imaging that uses radionuclides/ radioisotopes and depends on the process of radioactive decay in the diagnosis and treatment of disease. It is a broad term that covers many imaging techniques with the common basis, since ionizing radiation originating within the body is detected and then imaged so ...
Neutron capture therapy of cancer
Neutron capture therapy (NCT) is a noninvasive therapeutic modality for treating locally invasive malignant tumors such as primary brain tumors and recurrent head and neck cancer. It is a two step procedure: first, the patient is injected with a tumor localizing drug containing a non-radioactive isotope that has a high propensity or cross section (σ) to capture slow neutrons. The cross section of the capture agent is many times greater than that of the other elements present in tissues such as hydrogen, oxygen, and nitrogen. In the second step, the patient is radiated with epithermal neutrons, which after losing energy as they penetrate tissue, are absorbed by the capture agent which subsequently emits high-energy charged particles, thereby resulting in a biologically destructive nuclear reaction (Fig.1).All of the clinical experience to date with NCT is with the non-radioactive isotope boron-10, and this is known as boron neutron capture therapy (BNCT). At this time, the use of other non-radioactive isotopes, such as gadolinium, has been limited, and to date, it has not been used clinically. BNCT has been evaluated clinically as an alternative to conventional radiation therapy for the treatment of malignant brain tumors (gliomas), and more recently, recurrent, locally advanced head and neck cancer.