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    • Neural Foraminal Stenosis
    • Jonas Rydberg
    • Jonas Rydberg: Influence Statistics

      Jonas Rydberg

      Jonas Rydberg

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      Department of Radiology, Indiana University School of Medicine, 550 University Boulevard, Room UH-0279, 46202, Indianapolis, IN, USA | From the Department of Radiology, ...

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      Jonas Rydberg:Expert Impact

      Concepts for whichJonas Rydberghas direct influence:Neural foraminal stenosis,Aortic aneurysm,Abdominal aortic aneurysms,Multislice helical,Enhanced mdct,Mri findings,Sagittal reformations,Contrastenhanced mdct.

      Jonas Rydberg:KOL impact

      Concepts related to the work of other authors for whichfor which Jonas Rydberg has influence:Computed tomography,Pulmonary embolism,Image quality,Radiation dose,Gastrointestinal stromal tumors,Multidetector row,Small bowel.

      KOL Resume for Jonas Rydberg

      Year
      2009

      Department of Radiology, Indiana University School of Medicine, 550 University Boulevard, Room UH-0279, 46202, Indianapolis, IN, USA

      2007

      From the Department of Radiology, Indiana University School of Medicine, Indianapolis, Indiana.

      2006

      Department of Radiology, Indiana University School of Medicine, Indianapolis, IN, USA‡

      2005

      Department of Radiology, Indiana University Medical Center, UH 0279, 550 N. University Boulevard, 46202, Indianapolis, IN, USA

      2004

      Department of Radiology, Indiana University School of Medicine, Indianapolis, IN

      2003

      Department of Radiology, Indiana University School of Medicine, University Hospital, Room 0279, 550 North University Boulevard, Indianapolis, IN 46202, USA

      2002

      Indiana Univ. Medical School (USA)

      2001

      From the Departments of Radiology (J. Rydberg, K. K. Kopecky, M. S. Johnson, and S. A. Persohn) and Surgery (S. G. Lalka and M. C. Dalsing), Indiana University School of Medicine, University Hospital, Indianapolis, IN, U.S.A.

      Department of Radiology, Indiana University Hospital, Rm. 0279, 550 N. University Blvd., Indianapolis, IN 46202-5253, USA.

      2000

      Department of Radiology, Indiana University School of Medicine, Indianapolis, Indiana, USA.

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      Sample of concepts for which Jonas Rydberg is among the top experts in the world.
      Concept World rank
      enhanced mdct mri #4
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      Prominent publications by Jonas Rydberg

      KOL-Index: 10358

      PURPOSE: To determine diagnostic accuracy of four-channel multi-detector row computed tomography (CT) in emergency room and inpatient populations suspected of having acute pulmonary embolism (PE) who prospectively underwent both CT and pulmonary arteriography (PA).

      MATERIALS AND METHODS: Patients referred for PA to assess suspected PE were eligible. Institutional review board approval and written informed consent were obtained. All patients underwent CT and PA within a 48-hour period. ...

      Known for Suspected Acute | Detector Row | Sensitivity Specificity | Pulmonary Embolism | Reference Standard
      KOL-Index: 9209

      The objective of this study was to report the CT and MRI appearances of primary and metastatic gastrointestinal stromal tumor (GIST). The clinical and imaging findings of 31 patients with histological and immunohistochemical diagnosis of GIST were reviewed. The CT and MRI findings were assessed independently for size, location, enhancement characteristics, and pattern of metastatic disease. The tumors were of enteric (n=13), gastric (n=12), duodenal (n=2), and rectal (n=3) origin. In one ...

      Known for Mri Findings | Gastrointestinal Stromal | Liver Metastases | Imatinib Mesylate | Primary Tumors
      KOL-Index: 7115

      OBJECTIVE: The purpose of this study was to determine the accuracy of IV contrast-enhanced MDCT and MRI for evaluation of the severity and cause of neural foraminal stenosis in patients with cervical radiculopathy.

      SUBJECTS AND METHODS: Eighteen patients with cervical radiculopathy prospectively underwent contrast-enhanced MDCT and MRI. Contrast-enhanced MDCT scans were acquired at 1-mm thickness and reconstructed in oblique axial (parallel to disk) and sagittal (perpendicular to neural ...

      Known for Foraminal Stenosis | Cervical Radiculopathy | Mdct Mri | Interobserver Agreement | 4point Scale
      KOL-Index: 5817

      Laparoscopic technique for excision of a kidney from a living donor has advantages over conventional open surgery, but operative visibility and surgical exposure are limited. Preoperative multisection computed tomography (CT) can provide necessary anatomic information in a minimally invasive procedure. A three-phase examination is suggested: (a) imaging from the top of the kidneys to the pubic symphysis with a section width of 2.5 mm and no contrast medium, (b) scanning of the kidneys ...

      Known for Laparoscopic Nephrectomy | Living Renal | Minimally Invasive Imaging | Arterial Phase | Venous Anatomy
      KOL-Index: 5389

      Evaluating the spine in patients with metal orthopedic hardware is challenging. Although the effectiveness of conventional computed tomography (CT) can be limited by severe beam-hardening artifacts, the evolution of multichannel CT in recent years has made available new techniques that can help minimize these artifacts. Multichannel CT allows faster scanning times, resulting in reduced motion artifacts; thinner sections, with which it is possible to create a scanned volume of isotropic ...

      Known for Orthopedic Hardware | Image Interpretation | New Techniques | Computed Tomography | Spine Patients
      KOL-Index: 5214

      Multisection computed tomography (CT) was introduced in 1992 with the advent of dual-section-capable scanners and was improved in 1998 following the development of quad-section technology. With a recent increase in gantry speed from one to two revolutions per second, multisection CT scanners are now up to eight times faster than conventional single-section helical CT scanners. The benefits of quad-section CT relative to single-section helical CT are considerable. They include improved ...

      Known for Clinical Applications | Multisection Scanners | Multiplanar Reformation | Image Noise | Virtual Endoscopy
      KOL-Index: 3963

      AIM: To evaluate the usefulness of coronal and sagittal reformations from isotropic abdomino-pelvic computed tomography (CT) examinations.

      METHODS: Fifty consecutive abdomino-pelvic CT examinations were reconstructed into two sets of axial source images: 0.9 mm section width with 0.45 mm reconstruction interval (isotropic) and 4 mm section width with 3 mm reconstruction interval. The isotropic dataset was reformatted into coronal and sagittal stacks with 4 mm section widths. Three ...

      Known for Sagittal Reformations | Abdominal Tomography | Axial Images | Lumbar Spine | Image Interpretation
      KOL-Index: 3962

      Three-dimensional rendering of computed tomographic data with volume rendering (VR), shaded surface display (SSD), and maximum intensity projection has been performed for over 20 years. In the foot and ankle, no one image reformatting technique is satisfactory for displaying every anatomic relationship or disease process. Two-dimensional multiplanar reformatted (MPR) images are the basic images used for diagnosis. MPR images are especially useful for identifying small fractures. VR is ...

      Known for Bone Humans Imaging | Foot Ankle | Volume Rendering | Anatomic Relationship | Dimensional Joint
      KOL-Index: 3837
      Known for Aortic Aneurysm | Endovascular Repair | Assisted Imaging | Stents Tomography | Ray Computed
      KOL-Index: 3834

      Endovascular stent grafting of abdominal aortic aneurysms is a new technique that may replace open surgery in selected cases. Pre-and postoperative angiography can be replaced by helical CT. This pictorial essay describes and illustrates the use of multislice helical CT where maximum intensity projection and multiplanar reformats play a central role in the evaluation.

      Known for Abdominal Aortic Aneurysms | Stent Grafting | Multislice Helical | Pictorial Essay | New Technique
      KOL-Index: 3250

      BACKGROUND: Current imaging modalities may not be able to detect endoleaks, differentiate between type II and type III, or localize inflow and outflow sources. We describe a new technique that can characterize endoleaks to guide secondary intervention.

      METHODS: One hundred four patients with Zenith (Cook, Inc.) endograft repair of abdominal aortic aneurysms (AAAs) were monitored by serial computed tomographic angiography (CTA). Endoleaks were evaluated with a dynamic CTA using a ...

      Known for Tomographic Angiography | Vessel Prosthesis | Abdominal Aortic | Digital Subtraction | Secondary Interventions
      KOL-Index: 2896

      OBJECTIVE: We sought to evaluate the usefulness of coronal and sagittal reformations from isotropic chest computed tomography (CT) examinations.

      METHODS: A total of 30 chest CT examinations were reconstructed into 2 sets of axial source images: 0.9-mm slice width with 0.45-mm reconstruction interval (isotropic) and 4-mm slices with 3-mm reconstruction interval. The isotropic dataset was reformatted into coronal and sagittal stacks with 4-mm slices. Three readers reviewed the image sets ...

      Known for Computed Tomography | Image Interpretation | Computer Assisted | 3 Mm | Radiography Thoracic
      KOL-Index: 2596

      AIM: To evaluate the image quality of axial and coronal reformats obtained from isotropic resolution 40-channel chest computed tomography (CT) examinations.

      METHODS AND MATERIALS: Thirty consecutive patients with intravenous contrast-enhanced chest CT examinations using a 40-channel CT machine were enrolled for the study. The raw data were reconstructed into two sets of source axial images: 0.9 mm section width and 0.45 mm reconstruction interval (isotropic resolution) and 4mm section ...

      Known for Isotropic Chest | Reconstruction Interval | Axial Images | Image Sets | Radiography Thoracic
      KOL-Index: 2390
      Known for Musculoskeletal Imaging | Implants Tomography | Female Fractures | Xray Computed | Joint Diseases

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      Department of Radiology, Indiana University School of Medicine, 550 University Boulevard, Room UH-0279, 46202, Indianapolis, IN, USA | From the Department of Radiology, Indiana University School of Medicine, Indianapolis, Indiana. | Department of Rad

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