guided radiation therapy
... Purpose: Geometric uncertainties in the process of radiation planning and delivery constrain dose escalation and induce normal tissue complications. An imaging system has been developed to generate high-resolution, softtissue images of the patient at the time of treatment for the purpose of guiding ...
... Purpose: Geometric uncertainties in the process of radiation planning and delivery constrain dose escalation and induce normal tissue complications. An imaging system has been developed to generate high-resolution, softtissue images of the patient at the time of treatment for the purpose of guiding ...
chapter 7. clinical treatment planning in external photon
... For single beam: the point on central axis at the centre of the target volume. For parallel-opposed equally weighted beams: the point on the central axis midway between the beam entrance points. For parallel-opposed unequally weighted beams: the point on the central axis at the centre of the target ...
... For single beam: the point on central axis at the centre of the target volume. For parallel-opposed equally weighted beams: the point on the central axis midway between the beam entrance points. For parallel-opposed unequally weighted beams: the point on the central axis at the centre of the target ...
Chapter 15: Special Procedures and Techniques in
... 15.2.4 Historical development (1950s and 1960s) ...
... 15.2.4 Historical development (1950s and 1960s) ...
Now CE certified: MR-compatible guide wire Date of issue: 11/2012
... invasive medicine. Guide wires are placed into the body through a natural or artificially produced body orifice and guided to the point of treatment predominantly with the help of computer tomography (CT). However, by applying this method, both the patient and the physician are exposed to high level ...
... invasive medicine. Guide wires are placed into the body through a natural or artificially produced body orifice and guided to the point of treatment predominantly with the help of computer tomography (CT). However, by applying this method, both the patient and the physician are exposed to high level ...
A new era for children with diffuse intrinsic pontine glioma: hope for
... key issue; preclinical models for DIPG are still very rare. To date, only two groups have published on DIPG in vitro models [17,22] . With the lack of DIPG cell lines, in vivo models have been developed using adult glioma cell lines, but these lack the DIPG genotype. Moreover, only few animal mode ...
... key issue; preclinical models for DIPG are still very rare. To date, only two groups have published on DIPG in vitro models [17,22] . With the lack of DIPG cell lines, in vivo models have been developed using adult glioma cell lines, but these lack the DIPG genotype. Moreover, only few animal mode ...
Imaging in radiotherapy - Nuclear Sciences and Applications
... 2.2.1.1. Current Issues and Future Developments Computed tomography (CT) is and will be likely to remain the predominant volumetric imaging modality for radiotherapy. In common with other volumetric imaging modalities, CT is used to delineate tumour (Gross Tumour Volume, GTV), suspected tumour (Clin ...
... 2.2.1.1. Current Issues and Future Developments Computed tomography (CT) is and will be likely to remain the predominant volumetric imaging modality for radiotherapy. In common with other volumetric imaging modalities, CT is used to delineate tumour (Gross Tumour Volume, GTV), suspected tumour (Clin ...
Imaging in Radiotherapy, IAEA Consultant`s meeting report
... 2.2.1.1. Current Issues and Future Developments Computed tomography (CT) is and will be likely to remain the predominant volumetric imaging modality for radiotherapy. In common with other volumetric imaging modalities, CT is used to delineate tumour (Gross Tumour Volume, GTV), suspected tumour (Clin ...
... 2.2.1.1. Current Issues and Future Developments Computed tomography (CT) is and will be likely to remain the predominant volumetric imaging modality for radiotherapy. In common with other volumetric imaging modalities, CT is used to delineate tumour (Gross Tumour Volume, GTV), suspected tumour (Clin ...
Chapter 1
... 5. Explain the career opportunities within the profession of radiologic technology. 6. Identify the various specialties within a radiology department. Copyright © 2012, 2007, 2002, 1997, 1991, 1984, 1979 by Saunders, an imprint of Elsevier Inc. All rights reserved. ...
... 5. Explain the career opportunities within the profession of radiologic technology. 6. Identify the various specialties within a radiology department. Copyright © 2012, 2007, 2002, 1997, 1991, 1984, 1979 by Saunders, an imprint of Elsevier Inc. All rights reserved. ...
Optimisation in general radiography (PDF Available)
... Radiography using film has been an established method for imaging the internal organs of the body for over 100 years. Surveys carried out during the 1980s identified a wide range in patient doses showing that there was scope for dosage reduction in many hospitals. This paper discusses factors that n ...
... Radiography using film has been an established method for imaging the internal organs of the body for over 100 years. Surveys carried out during the 1980s identified a wide range in patient doses showing that there was scope for dosage reduction in many hospitals. This paper discusses factors that n ...
Radiology
... Determination of number and size of treatment ports Selection of appropriate treatment devices Other procedures Radiology ...
... Determination of number and size of treatment ports Selection of appropriate treatment devices Other procedures Radiology ...
Validating the use of Digitally Reconstructed Radiographs as
... Upon analysing the cases currently stored on the hospitals planning system, there were a sufficient number of prostate treatments to collect a pilot or validation study sample, and those selected should reasonably represent patients typically being referred for treatment to this centre. In assessing ...
... Upon analysing the cases currently stored on the hospitals planning system, there were a sufficient number of prostate treatments to collect a pilot or validation study sample, and those selected should reasonably represent patients typically being referred for treatment to this centre. In assessing ...
上海交通大学医学院 教 案 课程名称 Medical Imaging 2008年3月1日
... specifications between 0.5 and 10 mm. Data for an individual slice, 360°tube rotation, are routinely acquired in 1 s or less. The advantages of CT compared with MR include rapid scan acquisition, superior bone detail, and demonstration of ...
... specifications between 0.5 and 10 mm. Data for an individual slice, 360°tube rotation, are routinely acquired in 1 s or less. The advantages of CT compared with MR include rapid scan acquisition, superior bone detail, and demonstration of ...
Orbital(Osteoma(
... woven bones. Osteoid osteomas can occur in any bone, but in approximately two thirds of patients, the appendicular skeleton is involved. These lesions are encountered infrequently in the skull and facial bo ...
... woven bones. Osteoid osteomas can occur in any bone, but in approximately two thirds of patients, the appendicular skeleton is involved. These lesions are encountered infrequently in the skull and facial bo ...
Crisp images of the upper neck with Planmeca`s CBCT
... post-processed to include all required slice thicknesses. “They can also be acquired in a high resolution CT scan, but that would produce an even higher radiation dose”, describes Mikkonen. Also, the patient position is better in a CBCT scan than in a CT scan. A CT scan is acquired with the patient ...
... post-processed to include all required slice thicknesses. “They can also be acquired in a high resolution CT scan, but that would produce an even higher radiation dose”, describes Mikkonen. Also, the patient position is better in a CBCT scan than in a CT scan. A CT scan is acquired with the patient ...
ACR–SPR Practice Guideline for the Performance of Computed
... concurrently. In certain cases, it may be appropriate to limit the area exposed and focus only on the area or organs of concern in order to limit the radiation dose. This is especially advised in patients with multiple CT studies and follow-up examinations. An adequate study may be performed with si ...
... concurrently. In certain cases, it may be appropriate to limit the area exposed and focus only on the area or organs of concern in order to limit the radiation dose. This is especially advised in patients with multiple CT studies and follow-up examinations. An adequate study may be performed with si ...
Pregnancy and Medical Radiation
... • An infant absorbs approximately 0.01% of the maternal intravenous dose of iodinated contrast from breast milk, over the first 24 hours (equivalent to less than 1% of the recommended dose for an infant undergoing a contrasted imaging study). The ACR recommends that it is safe to breast feed immedia ...
... • An infant absorbs approximately 0.01% of the maternal intravenous dose of iodinated contrast from breast milk, over the first 24 hours (equivalent to less than 1% of the recommended dose for an infant undergoing a contrasted imaging study). The ACR recommends that it is safe to breast feed immedia ...
Optimization of pulsed fluoroscopy in pediatric
... Cancer Risks at Low Doses among Atomic Bomb Survivors” [2], as well as by this finding being featured in the national press [3]. Radiation hygiene has an especially large role in the case of pediatric patients. Small children are approximately ten times more sensitive to radiation than middle-aged a ...
... Cancer Risks at Low Doses among Atomic Bomb Survivors” [2], as well as by this finding being featured in the national press [3]. Radiation hygiene has an especially large role in the case of pediatric patients. Small children are approximately ten times more sensitive to radiation than middle-aged a ...
Web-based system for Quality Assurance of Radiation Oncology
... I would like to start by thanking my supervisor Dr. François DeBlois for his invaluable support throughout my thesis. His guidance and encouragement at all stages of this project made it a wonderful experience. I would like to acknowledge Dr. Gabriela Stroian for the many hours spent carefully discu ...
... I would like to start by thanking my supervisor Dr. François DeBlois for his invaluable support throughout my thesis. His guidance and encouragement at all stages of this project made it a wonderful experience. I would like to acknowledge Dr. Gabriela Stroian for the many hours spent carefully discu ...
“Best Practices” for Mammography Result Reports
... Clip Placement at Time of Image-Guided Needle Biopsy • 40 year old female referred with needle biopsy performed but no clip placement, path=“c/w ductal carcinoma”, repeat imaging including MRI did not reveal lesion, surgical excision of suspicious areas benign, started on Tamoxifen, 1 year later DC ...
... Clip Placement at Time of Image-Guided Needle Biopsy • 40 year old female referred with needle biopsy performed but no clip placement, path=“c/w ductal carcinoma”, repeat imaging including MRI did not reveal lesion, surgical excision of suspicious areas benign, started on Tamoxifen, 1 year later DC ...
Imaging in Pregnant Patients
... Radiologists are best suited to suggest a study for imaging a pregnant patient presenting for an acute condition and to prepare a protocol for the study. The type of imaging study is planned in close consultation with the clinical team and targeted to the clinical scenario. Ultrasonography (US) shou ...
... Radiologists are best suited to suggest a study for imaging a pregnant patient presenting for an acute condition and to prepare a protocol for the study. The type of imaging study is planned in close consultation with the clinical team and targeted to the clinical scenario. Ultrasonography (US) shou ...
multi-purpose body phantom
... The Quality Assurance System for Advanced Radiotherapy (QUASAR™) supports the testing of a wide variety of dosimetric and nondosimetric functions of planning systems, CT simulators and delivery systems. QUASAR™ is a valuable part of any quality assurance program. From respiratory motion and MLC beam ...
... The Quality Assurance System for Advanced Radiotherapy (QUASAR™) supports the testing of a wide variety of dosimetric and nondosimetric functions of planning systems, CT simulators and delivery systems. QUASAR™ is a valuable part of any quality assurance program. From respiratory motion and MLC beam ...
CT Dose Measures
... Dose Length Product (DLP) • DLP takes into account scan length • It is the product of the CTDIvol x scan length (in centimeters) • Unit is the mGy.cm • DLP is used to obtain effective dose ...
... Dose Length Product (DLP) • DLP takes into account scan length • It is the product of the CTDIvol x scan length (in centimeters) • Unit is the mGy.cm • DLP is used to obtain effective dose ...
Editorial Review 2016 - Nuclear Medicine, Diagnostic Imaging and
... Northern Ireland, UK. The aim of this journal is to address the requirements of researchers - specialising in nuclear medicine, diagnostic imaging and therapy by providing open access to peer-reviewed articles. These high quality published articles are available in both HTML and PDF formats. All pub ...
... Northern Ireland, UK. The aim of this journal is to address the requirements of researchers - specialising in nuclear medicine, diagnostic imaging and therapy by providing open access to peer-reviewed articles. These high quality published articles are available in both HTML and PDF formats. All pub ...
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... of 0.1Gy (10 rad), below which there is no practical risk of radiation-induced abortion or congenital malformations. The usual radiation dose, delivered during plain x-ray imaging, is usually less than 0.02 Gy (2 rad), while it rises to 0.02-0.035 Gy (2-3.5 rad) during computed tomography (CT). Base ...
... of 0.1Gy (10 rad), below which there is no practical risk of radiation-induced abortion or congenital malformations. The usual radiation dose, delivered during plain x-ray imaging, is usually less than 0.02 Gy (2 rad), while it rises to 0.02-0.035 Gy (2-3.5 rad) during computed tomography (CT). Base ...