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Applicable Neuroradiology - LSU School of Medicine
Applicable Neuroradiology - LSU School of Medicine

...  Cranial U/S developed in the 70’s  Used in infancy as a non-invasive way to view ventricles and look for intraventricular hemorrhage using the anterior fontanelle as a portal  Used in adults for carotid stenosis/dissection or for cerebral ...
Musculoskeletal Radiology - Past Meetings
Musculoskeletal Radiology - Past Meetings

... Normal variants Ligament - Hypoplasia of the posterior cruciate ligament with thickening of Wrisberg ligament - Aplasia of the ACL Unilateral lateral meniscomeniscal ligament - Anterior meniscofemoral ligament of the medial meniscus Meniscus - Abnormal band of the lateral meniscus - Anomalous insert ...
Neuroradiology - Past Meetings
Neuroradiology - Past Meetings

... Normal temporal bone anatomy, with an emphasis on middle ear structures Review of the Jahrsdoerfer scoring system for congenital aural atresia, and how it is used to determine the appropriateness of performing atresiaplasty Patients with score 6/10 or lower are poor surgical candidates Evaluation of ...
Image Processing for Fluoroscopy Guided Atrial Fibrillation Ablation
Image Processing for Fluoroscopy Guided Atrial Fibrillation Ablation

... As there is currently no planning support for single-shot-devices like the cryoballoon catheter, a planning tool is presented, the Atrial Fibrillation Ablation Planning Tool (AFiT). AFiT provides direct visual feedback about the fit of a cyroballoon to the patient’s anatomy. Another tool to provide ...
Mammography and tomosynthesis
Mammography and tomosynthesis

... – Demonstrate microcalcifications – features with high inherent contrast, but 100 μm or less in diameter – Demonstrate low contrast masses within the breast tissue – these may be relatively large, but are often very low contrast as glandular and adipose tissue have very similar atomic number (7.4 an ...
Lecture 8 - Mammography and tomosynthesis
Lecture 8 - Mammography and tomosynthesis

... – Demonstrate microcalcifications – features with high inherent contrast, but 100 μm or less in diameter – Demonstrate low contrast masses within the breast tissue – these may be relatively large, but are often very low contrast as glandular and adipose tissue have very similar atomic number (7.4 an ...
CT angiography of the renal arteries and veins
CT angiography of the renal arteries and veins

... remain unidentified in potential surgery candidates, that may increase surgical morbidity during operations, therefore it is necessary to evaluate renal veins and azygocaval anatomy correctly (22). Knowing the above- ...
the quantification of cr and dr image quality and patient dose for
the quantification of cr and dr image quality and patient dose for

... F-10 Newborn effective doses for Canon DR system at 55 kVp....................................193 F-11 Newborn effective doses for Canon DR system at 60 kVp....................................195 F-12 Newborn effective doses for Canon DR system at 65 kVp....................................197 F-13 N ...
2015-2016 Digest of Council Actions
2015-2016 Digest of Council Actions

... 1. ACR-NEMA Digital Imaging and Communications Standards ................................................................. 24 2. Developing Ultrasound Applicability in PACS ......................................................................................... 25 3. Guidelines for Multi-Detector C ...
University of Groningen Visualization, classification and
University of Groningen Visualization, classification and

... remodelling). In fact, negative remodelling is associated with stable lesions and positive remodelling with unstable lesions [5]. Until a certain stage, the coronary undergoes a compensatory response to the plaque build up by growing outward causing a positive remodelling, while preserving lumen ope ...
Optics+
Optics+

... replaced with the Einsteinian notions of relative motion, relative time, and inertial reference frames in relative motion. This relativity dominated viewpoint has effectively abandoned any critical study or advanced research in the detailed properties and processes of physical space for advancement ...
Multidetector CT Angiogra- phy for Acute Gastrointesti
Multidetector CT Angiogra- phy for Acute Gastrointesti

... adequate bowel preparation in the most serious cases. Mucosal visualization is poor owing to the presence of intraluminal blood clots and other intestinal contents, and the distal portion of the duodenum and the small bowel are not routinely accessed (14). Because of its ability to be used to wash a ...
Imaging of Renal Lymphoma: Patterns of Disease with Pathologic
Imaging of Renal Lymphoma: Patterns of Disease with Pathologic

... 5.9% of cases, respectively (2). Despite the relatively high prevalence of renal involvement, imaging studies demonstrate renal abnormalities in only 3%– 8% of patients undergoing routine evaluation for staging or during the course of therapy (3–5). This apparent discrepancy between the pathology li ...
ARVO 2015 Annual Meeting Abstracts 477 Early AMD Wednesday
ARVO 2015 Annual Meeting Abstracts 477 Early AMD Wednesday

... disorder that is characterized by the progressive loss of macular or central vision as patients age. One aspect of AMD’s pathogenesis involves the bisretinoid A2E, which accumulates with age and has been found in greater abundance in AMD eyes. Despite years of study, A2E is still somewhat of an enig ...
evaluation of elegp collimator with resolution recovery for spect/ct
evaluation of elegp collimator with resolution recovery for spect/ct

... electrons are then amplified by a chain of dynodes, and an electrical pulse can be measured. By knowing the size of the electrical pulse it is possible to calculate where the light photons originated. The electrical pulses are then processed in a matrix of electronics. It can be shown both mathemati ...
examination handbook
examination handbook

... measure of the critical knowledge and cognitive skills underlying the tasks typically required for the practice of medical imaging, interventional procedures, and radiation therapy. In fact, subverting the integrity of ARRT’s exams is illegal, based on a Minnesota law that went into effect August 1, ...
Abstracts - dicom (nema)
Abstracts - dicom (nema)

... patient images the surgeon decides for the best fitting implant available and for the exact position and orientation he wants to implant it to. Based on this information, navigation systems or other intraoperativ assistance systems can be used to intraoperatively guide the implantation. In orthopedi ...
Scatter Compensation Techniques in PET
Scatter Compensation Techniques in PET

... the scatter component in the two conditions can be considered as a constant for intersubject comparisons still needs to be demonstrated. This constancy is needed to substantiate the hypothesis that the outcome of statistical analysis (reflecting subtle changes in radiotracer distribution) does not c ...
department of urology
department of urology

... RE: ACGME Memo - Case recording of robotic and urologic ultrasound cases In an effort to match the degree of resident involvement in robotic surgical cases with the resident role recorded in operative case logs, the Urology Residency Review Committee (RRC) wishes to clarify the roles of surgeon and ...
Structural and Functional Imaging of Normal Bone Marrow and
Structural and Functional Imaging of Normal Bone Marrow and

... pathologic marrow lesions. Short inversion-time-inversionrecovery (STIR) sequences have been used to null the signal of fat protons, allowing for greater conspicuity of pathologic lesions and uninvolved bone marrow. STIR images have a reduced signal-to-noise ratio but are less susceptible to motion ...
Detection of pulmonary nodules in chest tomosynthesis
Detection of pulmonary nodules in chest tomosynthesis

... 3-dimensional technique providing parallel sections of the body, and obscuring anatomy can thus be eliminated. Structures of interest may, therefore, be more easily detected than in conventional radiography. The disadvantages usually associated with CT are high effective doses, high cost and lower a ...
A Prospective Cross-Sectional Study with 256
A Prospective Cross-Sectional Study with 256

... (XCB, Philips Healthcare, Cleveland, OH, USA); lower row, (F–J), images after reconstruction with an edgeenhancing kernel (XCD, Philips Healthcare, Cleveland, OH, USA). Internal (B, G) and external (C, H) stent areas measured using a semi-automatic segmentation software, with manual correction when ...
Assessment of Coronary Arteries with Total Study Time of Less than
Assessment of Coronary Arteries with Total Study Time of Less than

... Arteries with Total Study Time of Less than 30 Minutes by Using Whole-Heart Coronary MR Angiography This study had institutional review board approval, and all patients gave informed consent. The purpose of this study was to prospectively evaluate the use of whole-heart three-dimensional (3D) corona ...
Localization of Human Pelvis Anatomical Coordinate System Using Ultrasound
Localization of Human Pelvis Anatomical Coordinate System Using Ultrasound

... system. The precise localization of pelvic anatomical coordinate system as a reference frame for assessing the cup and femoral prosthesis orientation in the pelvis can decrease the chances of post-operative complications occurring [4]. Conventionally in computer-assisted surgeries, invasive probing ...
LSU School of Medicine Department of Radiology Residency Program
LSU School of Medicine Department of Radiology Residency Program

... weekly interdepartmental subspecialty conferences, and a core curriculum of radiation physics and biology. The goals and objectives for each rotation are competency based and level specific with ongoing formative evaluations for each rotation culminating in summative evaluations for annual advanceme ...
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Image-guided radiation therapy

Image-guided radiation therapy (IGRT) is the process of frequent two and three-dimensional imaging, during a course of radiation treatment, used to direct radiation therapy utilizing the imaging coordinates of the actual radiation treatment plan. The patient is localized in the treatment room in the same position as planned from the reference imaging dataset. An example of IGRT would include localization of a cone beam computed tomography (CBCT) dataset with the planning computed tomography (CT) dataset from planning. IGRT would also include matching planar kilovoltage (kV) radiographs or megavoltage (MV) images with digital reconstructed radiographs (DRRs) from the planning CT. These two methods comprise the bulk of IGRT strategies currently employed circa 2013.This process is distinct from the use of imaging to delineate targets and organs in the planning process of radiation therapy. However, there is clearly a connection between the imaging processes as IGRT relies directly on the imaging modalities from planning as the reference coordinates for localizing the patient. The variety of medical imaging technologies used in planning includes x-ray computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET) among others. The precision of IGRT is significantly improved when N-localizer technology is used in conjunction with these medical imaging technologies. Through advancements in imaging technology, combined with a further understanding of human biology at the molecular level, the impact of IGRT on radiotherapy treatment continues to evolve.
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