Liver Masses: A Clinical, Radiologic, and Pathologic
... seeding and tumor recurrence owing to the immunosuppression after liver transplantation.20 There is an approximately 10% false-negative rate with biopsy of small liver lesions as a result of difficulties with accurately targeting the lesion. On the other hand, biopsy is encouraged for diagnosis of pa ...
... seeding and tumor recurrence owing to the immunosuppression after liver transplantation.20 There is an approximately 10% false-negative rate with biopsy of small liver lesions as a result of difficulties with accurately targeting the lesion. On the other hand, biopsy is encouraged for diagnosis of pa ...
Dr. Arenson Celebrates the Centennial with Attendees from Nigeria
... RSNA President. Dr. Baron is professor of radiology at Technologists, along with all hospital large throughout my career. As I the University of Chicago staff, should be educated, respected begin my term as RSNA president Medical Center, where he and the Society enters its second has been since 2002 ...
... RSNA President. Dr. Baron is professor of radiology at Technologists, along with all hospital large throughout my career. As I the University of Chicago staff, should be educated, respected begin my term as RSNA president Medical Center, where he and the Society enters its second has been since 2002 ...
beaumont hospital system department of cardiovascular medicine
... all aspects of cardiovascular care, and we will minimize those activities that have little or no educational value. ...
... all aspects of cardiovascular care, and we will minimize those activities that have little or no educational value. ...
Process Management and Quality Assurance for Intracranial
... Intracranial stereotactic treatment is a high-fraction dose, high-precision technique based on the experience of several groups but lacking radiobiological evidence. Due to the high fraction dose, the highest possible accuracy in target positioning and dose delivery is required. High-level quality a ...
... Intracranial stereotactic treatment is a high-fraction dose, high-precision technique based on the experience of several groups but lacking radiobiological evidence. Due to the high fraction dose, the highest possible accuracy in target positioning and dose delivery is required. High-level quality a ...
Characterization of the homogeneous tissue mixture approximation
... (BCT) imaging data and a glandular density estimation algorithm to determine how dense an “average” breast actually is, finding that the mean glandular fraction is approximately 15%–20%, and that rarely is a 50% dense breast encountered clinically.19 Another study based on BCT data has found that th ...
... (BCT) imaging data and a glandular density estimation algorithm to determine how dense an “average” breast actually is, finding that the mean glandular fraction is approximately 15%–20%, and that rarely is a 50% dense breast encountered clinically.19 Another study based on BCT data has found that th ...
Imaging the posterior mediastinum: a multimodality approach
... However, computed tomography (CT) and magnetic resonance imaging (MRI) are the imaging modalities of choice for further defining their relationship with neighboring structures, as well as for revealing specific imaging features that might narrow the differential diagnosis. This article presents spec ...
... However, computed tomography (CT) and magnetic resonance imaging (MRI) are the imaging modalities of choice for further defining their relationship with neighboring structures, as well as for revealing specific imaging features that might narrow the differential diagnosis. This article presents spec ...
rsd product brochure - Radiology Support Devices
... By 1952 Mr. Alderson had developed an arm with which an amputee with no stump could perform many tasks, using toe controls. He then went on to controls using the skin currents that accompany the contraction of muscles which had previously powered lost arms. Unfortunately, the electronics could not b ...
... By 1952 Mr. Alderson had developed an arm with which an amputee with no stump could perform many tasks, using toe controls. He then went on to controls using the skin currents that accompany the contraction of muscles which had previously powered lost arms. Unfortunately, the electronics could not b ...
technique - Dr. Barry A. Kaplan
... processors, increased computing power, and software applications. CBCT has become an essential tool for pre-operative assessment of potential dental implant receptor sites, bone grafting procedures, and other oral surgery applications. The diagnostic power of the imaging modality has been greatly au ...
... processors, increased computing power, and software applications. CBCT has become an essential tool for pre-operative assessment of potential dental implant receptor sites, bone grafting procedures, and other oral surgery applications. The diagnostic power of the imaging modality has been greatly au ...
Susceptibility-Weighted Imaging - MS-MRI
... MCA, MRA can usually show the stenosis or occlusion very well; however, distal clots are not well visualized on MRA. However, Hermier et al17 have shown a case with a clot inside the left insular arterial branches of the MCA (M3) by using GE imaging. Likewise, SWI appears to complement MRA by being ...
... MCA, MRA can usually show the stenosis or occlusion very well; however, distal clots are not well visualized on MRA. However, Hermier et al17 have shown a case with a clot inside the left insular arterial branches of the MCA (M3) by using GE imaging. Likewise, SWI appears to complement MRA by being ...
Public Summary Document - Word 93 KB
... Academy of Oral and Maxillofacial Radiology 2010). There is a close relationship between the FOV size and the radiation dose received by the patients; therefore it is important that the smallest FOV suitable to capture all the required clinical information is selected for each ...
... Academy of Oral and Maxillofacial Radiology 2010). There is a close relationship between the FOV size and the radiation dose received by the patients; therefore it is important that the smallest FOV suitable to capture all the required clinical information is selected for each ...
Acute Chest Pain — Suspected Aortic Dissection
... CTA, transesophageal echocardiography (TEE), and magnetic resonance imaging (MRI) in detecting aortic dissection [12,15,19,25]. Evaluation of the relative accuracy of these modalities is confounded by the fact that technical improvements in CT, MRI, and TEE have outpaced our ability to perform neces ...
... CTA, transesophageal echocardiography (TEE), and magnetic resonance imaging (MRI) in detecting aortic dissection [12,15,19,25]. Evaluation of the relative accuracy of these modalities is confounded by the fact that technical improvements in CT, MRI, and TEE have outpaced our ability to perform neces ...
chapter 28 radiology
... provides visualization of blood flow, as well as images of normal and diseased blood vessels ...
... provides visualization of blood flow, as well as images of normal and diseased blood vessels ...
19 2D and 3D Planning in Brachytherapy
... Dose Calculation Although several national protocols exist for the dose calculation around brachytherapy sources, the protocol proposed and established by the American Association of Physicists in Medicine (AAPM), Task Group 43, and published in 1995 (Nath et al. 1995), has been widely accepted and ...
... Dose Calculation Although several national protocols exist for the dose calculation around brachytherapy sources, the protocol proposed and established by the American Association of Physicists in Medicine (AAPM), Task Group 43, and published in 1995 (Nath et al. 1995), has been widely accepted and ...
Patellar Tendinopathy - University of Pennsylvania Orthopaedic
... this process occurring primarily at the site of pain while other non-painful sites showed no neovascularization25,26. It is believed that these vessels can lead to a significant source of pain as nerve fibers have been found to accompany them ...
... this process occurring primarily at the site of pain while other non-painful sites showed no neovascularization25,26. It is believed that these vessels can lead to a significant source of pain as nerve fibers have been found to accompany them ...
Quantitative assessment of MRI lesion load in multiple sclerosis
... using the fast-FLAIR sequence are on average 18<7r higher than those detected using CSE, which, at present, is most commonly used to assess lesion volume in multiple sclerosis (Filippi et al., 1995/). Some of this was due to extra cortical/ subcortical lesions seen in the fast-FLAIR scans (Fig. I). ...
... using the fast-FLAIR sequence are on average 18<7r higher than those detected using CSE, which, at present, is most commonly used to assess lesion volume in multiple sclerosis (Filippi et al., 1995/). Some of this was due to extra cortical/ subcortical lesions seen in the fast-FLAIR scans (Fig. I). ...
4D-CT Lung Registration and its Application for Lung
... In stage I and stage II of lung cancer, most cancer cells stay locally together inside the lung and have not spread out beyond nearby lymph nodes yet, surgery treatment is preferred. Lung cancer cells, when start to spread out, always invade into far away lymph nodes (stage III) and travel to the wh ...
... In stage I and stage II of lung cancer, most cancer cells stay locally together inside the lung and have not spread out beyond nearby lymph nodes yet, surgery treatment is preferred. Lung cancer cells, when start to spread out, always invade into far away lymph nodes (stage III) and travel to the wh ...
Bilateral submandibular gland aplasia with clinico
... opening may be constricted or broad.14 The defects are usually small (less than 5 mm), but sometimes larger than 2 cm.14,16 Defects are generally not visible in the thicker, posterior third of the muscle. The defects are bilateral in two-thirds of cases (as in our case) with fat as the most common c ...
... opening may be constricted or broad.14 The defects are usually small (less than 5 mm), but sometimes larger than 2 cm.14,16 Defects are generally not visible in the thicker, posterior third of the muscle. The defects are bilateral in two-thirds of cases (as in our case) with fat as the most common c ...
A Monte Carlo based three-dimensional dose reconstruction
... 共Received 22 January 2006; accepted for publication 16 March 2006; published 21 June 2006兲 The verification of intensity-modulated radiation therapy 共IMRT兲 is necessary for adequate quality control of the treatment. Pretreatment verification may trace the possible differences between the planned dos ...
... 共Received 22 January 2006; accepted for publication 16 March 2006; published 21 June 2006兲 The verification of intensity-modulated radiation therapy 共IMRT兲 is necessary for adequate quality control of the treatment. Pretreatment verification may trace the possible differences between the planned dos ...
Functional imaging in liver tumours Maxime Ronot 1,2,3, Ashley
... by hepatocytes, allowing for acquisition of the “hepatobiliary phase” 20 minutes after injection. With gadobenate dimeglumine, around 5% is taken up, and the hepatobiliary phase is obtained 1-3 hours after injection. Due to the rapid entry of Gd-EOB-DTPA into hepatocytes, classical features of liver ...
... by hepatocytes, allowing for acquisition of the “hepatobiliary phase” 20 minutes after injection. With gadobenate dimeglumine, around 5% is taken up, and the hepatobiliary phase is obtained 1-3 hours after injection. Due to the rapid entry of Gd-EOB-DTPA into hepatocytes, classical features of liver ...
Cone beam computed tomography - Its applications
... imaged, soft tissue and bone.[12] Conventional cone CT imaging renders an 8-bit grayscale which yields 256 shades or 12-bit grayscale that provides 4,096 shades, whereas the recent IMTEC Imaging’s new ILUMA Ultra CBCT Scanner yields images in 14-bit grayscale, resulting in the shades of 16,384.[9,30 ...
... imaged, soft tissue and bone.[12] Conventional cone CT imaging renders an 8-bit grayscale which yields 256 shades or 12-bit grayscale that provides 4,096 shades, whereas the recent IMTEC Imaging’s new ILUMA Ultra CBCT Scanner yields images in 14-bit grayscale, resulting in the shades of 16,384.[9,30 ...
ACCF/AHA Clinical Competence Statement on Cardiac Imaging
... Interventions (SCAI), and the SCMR. Peer review included two official representatives from the ACC and AHA; organizational review was done by the ASE, ASNC, SCAI, Society of Cardiovascular Computed Tomography (SCCT), SCMR, and SAI, as well as 40 content reviewers. This document was approved for publ ...
... Interventions (SCAI), and the SCMR. Peer review included two official representatives from the ACC and AHA; organizational review was done by the ASE, ASNC, SCAI, Society of Cardiovascular Computed Tomography (SCCT), SCMR, and SAI, as well as 40 content reviewers. This document was approved for publ ...
September - BIDMC Radiology Alumni
... begun a study of what will ultimately be 10,000 babies born in Zika epidemic areas including Brazil and Puerto Rico. “It’s going to be essential to follow them to look at their development, to look at their ability to learn, to look at hearing problems, balance problems, behavior problems, all those ...
... begun a study of what will ultimately be 10,000 babies born in Zika epidemic areas including Brazil and Puerto Rico. “It’s going to be essential to follow them to look at their development, to look at their ability to learn, to look at hearing problems, balance problems, behavior problems, all those ...
Chapter 01
... Measurements (ICRU) reports 50 and 62 formally define planning volumes and margins (ICRU 1993,1999). Portal imaging is traditionally done only on a weekly basis. The philosophy of portal imaging in the past has been focused on quality assurance (QA) of major errors in treatment ports or setup errors ...
... Measurements (ICRU) reports 50 and 62 formally define planning volumes and margins (ICRU 1993,1999). Portal imaging is traditionally done only on a weekly basis. The philosophy of portal imaging in the past has been focused on quality assurance (QA) of major errors in treatment ports or setup errors ...
CLASSlCAL RADIATION THERAPY
... Basic dose distribution data are usually measured in a water phantom, which closely approximates the radiation absorption and scattering properties of muscle and other soft tissues. Another reason for the choice ofwater as a phantom material is that it is universally available with reproducible radi ...
... Basic dose distribution data are usually measured in a water phantom, which closely approximates the radiation absorption and scattering properties of muscle and other soft tissues. Another reason for the choice ofwater as a phantom material is that it is universally available with reproducible radi ...
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.