May 2005 News Headlines

These are radiology news updates from other sites

Date this page was last updated: 01/07/2007 03:03:02 PM

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May 31, 2005   MRI Features of Lyme Arthritis in Children - American Journal of Roentgenology Conclusion: Our results identified three MRI features, specifically, myositis, adenopathy, and lack of subcutaneous edema, that strongly suggest the diagnosis of Lyme arthritis rather than septic arthritis in children with acute inflammation of the knee. Awareness of these characteristic MRI features may avoid unnecessary invasive procedures and cost...   Percutaneous Vertebroplasty: Indications, Contraindications, Technique, and Complications - Acta Radiologica Percutaneous vertebroplasty is emerging as one of the most promising new interventional procedures for relieving (or reducing) painful vertebra, with the injection of surgical polymethylmethacrylate or cement into vertebral bodies. This imaged-guided technique, originally used to treat vertebral hemangioma, has recently been extended to the treatment of metastases, osteoporotic compression fractures, and vertebral myeloma...   Posterolateral Complex Knee Injuries: Magnetic Resonance Imaging with Surgical Correlation - Acta Radiologica To describe the magnetic resonance imaging (MRI) findings of injuries of the posterolateral aspect of the knee and to evaluate the diagnostic capabilities of MRI in the assessment of these injuries...Conclusion: MRI is well suited for demonstrating the presence and extent of injuries of the major structures of the posterolateral complex of the knee, allowing characterization of the severity of injury...     May 27, 2005   Discogenic lumbar pain: association with MR imaging and CT discography - European Journal of Radiology Conclusion: Typical MR findings with concordant pain at discography include grade 4 or 5 disc degeneration and presence of a high intensity zone. Typical CT discography findings with concordant pain were fissured/ruptured discs and contrast extending into/beyond the outer annulus on CT... May 26, 2005   Comparison of Fast Spin-Echo Versus Conventional Spin-Echo MRI for Evaluating Meniscal Tears - American Journal of Roentgenology Conclusion: The sensitivities of conventional spin-echo and fast spin-echo imaging for detecting meniscal tears have been shown to be greater than 90% and approximately 80%, respectively. However, some authors advocate substituting conventional spin-echo imaging with fast spin-echo imaging. We urge the abandonment of fast spin-echo imaging for evaluating meniscal tears because a loss of greater than 10% in sensitivity is unacceptable... May 25, 2005   The imaging of lumbar spondylolisthesis - Clinical Radiology Lumbar spondylolisthesis is a common finding on plain radiographs. The condition has a variety of causes which can be differentiated on the basis of imaging findings. As the treatment is dependent upon the type of spondylolisthesis, it is important for the radiologist to be aware of these features...     May 24, 2005   Symptomatic bipartite medial cuneiform after injury: a case report - Foot and Ankle Surgery We present the case of a 23 year old professional rugby player with bipartition of the medial cuneiform, which became symptomatic following a rugby injury. Both plain radiographs and MRI scanning failed to arrive at the correct diagnosis. CT scanning was, however, diagnostic. The gap in the cuneiform was injected with 40 mg of Depomedrone under CT guidance...   Radiology of the Hands: Review and Self-Assessment Module - American Journal of Roentgenology Conclusion: The conditions illustrated in this article include erosive osteoarthritis, sarcoidosis, metastatic calcification, and synovial sarcoma. This article is qualified by the American Board of Radiology (ABR) in meeting the criteria for self-assessment toward the purpose of fulfilling requirements in the ABR Maintenance of Certification... May 23, 2005   Radiological Reasoning: A Benign-Appearing Bone Mass - American Journal of Roentgenology Conclusion: A wide variety of unusual, benign bone lesions that often have little clinical significance have been described in the literature. It is important to distinguish lesions that require specific therapy from those that do not; it is much less important to try to obtain a specific imaging diagnosis for lesions that do not require therapy...     May 20, 2005   Reliability of computerized image analysis for the evaluation of serial synovial biopsies in randomized controlled trials in rheumatoid arthritis - BMC Immunology Analysis of biomarkers in synovial tissue is increasingly used in the evaluation of new targeted therapies for patients with rheumatoid arthritis (RA). This study determined the intrarater and inter-rater reliability of digital image analysis (DIA) of synovial biopsies from RA patients participating in clinical trials. Arthroscopic synovial biopsies were obtained before and after treatment from 19 RA patients participating in a randomized controlled trial with prednisolone... May 19, 2005   Overutilization of shoulder magnetic resonance imaging as a diagnostic screening tool in patients with chronic shoulder pain - Journal of Shoulder and Elbow Surgery This was a retrospective study of 101 consecutive patients with chronic, atraumatic shoulder pain who were evaluated by a fellowship-trained shoulder specialist. The patients were assessed with a complete history, physical examination, plain radiographs, Simple Shoulder Test, and visual analog scores of pain, shoulder function, and quality of life. Forty-one percent of the shoulders presented with shoulder magnetic resonance imaging... May 16, 2005   Three-Dimensional Computed Tomography Imaging Evidence of Regeneration of the Semitendinosus Tendon Harvested for Anterior Cruciate Ligament Reconstruction: A Comparison With Hamstring Muscle Strength - Journal of Computer Assisted Tomography The proximal shift did not affect the peak torque ratio 12 months after surgery, however...Conclusions: A proximal shift of the muscle-tendon junction may help to explain the individual differences in early postoperative hamstring muscle strength recovery...   Trabecular Bone Structure Obtained From Multislice Spiral Computed Tomography of the Calcaneus Predicts Osteoporotic Vertebral Deformities - Journal of Computer Assisted Tomography Statistically significant correlations were found between most structure parameters and BMD...Conclusion: Structural parameters of trabecular bone as obtained from high-resolution MSCT images of the calcaneus can be used to differentiate between donors with and without osteoporotic vertebral fractures, using a high-resolution and high-dose CT protocol...   CT and MR Imaging Findings in Athletes with Early Tibial Stress Injuries: Comparison with Bone Scintigraphy Findings and Emphasis on Cortical Abnormalities - Radiology Significant difference in detection of early tibial stress injuries was found between MR imaging and both CT and bone scintigraphy...Conclusions: MR imaging is the single best technique in assessment of patients with suspected tibial stress injuries; in some patients with negative MR imaging findings, CT can depict osteopenia, which is the earliest finding of fatigue cortical bone injury...     Primary Leiomyosarcoma of Bone: Report of 4 Cases - Journal of Computer Assisted Tomography Summary: Primary leiomyosarcoma of bone is a very rare tumor. Four cases are reported: 3 tumors were located in the femur and 1 in the talus. Clinical and imaging findings including radiographs, CT, and MRI are described. The final diagnosis was made by histopathological, immunohistochemical, and/or ultrastructural study after biopsy...     May 11, 2005   Surgically Repaired Massive Rotator Cuff Tears: MRI of Tendon Integrity, Muscle Fatty Degeneration, and Muscle Atrophy Correlated with Intraoperative and Clinical Findings - American Journal of Roentgenology Conclusions: Open repair of massive rotator cuff tears may reach a favorable outcome in a significant proportion of patients, despite a high rate of recurrent or residual tears. Oblique coronal sizes of the recurrent or residual tear of less than or equal to 34 mm and postoperative fatty degenerations of infraspinatus muscle of less than or equal to 2 may allow a favorable outcome...   Imaging and Skeletal Muscle Disease - Current Rheumatology Reports Imaging techniques have assumed increasing importance in the diagnostic approach to patients with muscle disease. These techniques include computed tomography, ultrasound, and magnetic resonance imaging (MRI). For most disorders of muscle, ultrasound and MRI are more useful than computed tomography. Advantages of ultrasound include accessibility at the bedside and lower cost... May 10, 2005   Rotational Deformity in Varus Osteoarthritis of the Knee: Analysis with Computed Tomography - Clinical Orthopedics and Related Research Rotational deformities in varus osteoarthritis of the knee were evaluated with computed tomography. Preoperative computed tomography scans of 150 knees (114 patients) having total knee arthroplasty and 31 control knees (20 patients) were included. The femorotibial rotation was quantified using the clinical epicondylar axis of the femur and the tibial tuberosity (patella tendon) as the references...   16-MDCT in the Detection of Occult Wrist Fractures: A Comparison with Skeletal Scintigraphy - American Journal of Roentgenology Conclusions: Although CT was preferred by most patients and was quicker, scintigraphy appears to detect bony abnormality more frequently. However, there appears to be an interesting group of patients (7/51) with normal initial radiography findings but positive scintigraphy findings who would normally be considered to have a fracture but for whom CT results were negative. In some of these patients, the results of follow-up radiography at 6 weeks were also negative, suggesting that this group of patients warrants further study...   The Diagnostic Accuracy of MRI versus CT Imaging for Osteoid Osteoma in Children - Clinical Orthopedics and Related Research Advanced imaging often is obtained in children suspected of having osteoid osteoma. We hypothesized that magnetic resonance imaging gives a falsely aggressive appearance and that computed tomography is better for identifying osteoid osteoma. This is the first prospective blinded study comparatively assessing these imaging studies in children. Twelve preoperative magnetic resonance imaging scans of confirmed cases of osteoid osteoma were collected...     Skimboarder's Toe: Findings on High-Field MRI - American Journal of Roentgenology Conclusions: Skimboarding can be associated with hyperdorsiflexion injuries of the metatarsophalangeal joint. MRI shows that such injuries are associated with hyperdorsiflexion of the extensor hallucis longus or extensor digitorum longus tendon, causing tear of the extensor expansion. Unlike turf toe, in which the plantar plate is involved, skimboarder's toe involves structures dorsal to the metatarsophalangeal joint...     May 09, 2005   Role of Imaging in Management of Hemophilic Patients - American Journal of Roentgenology Conclusion: In hemophilic patients, the presence of symptomatology in the knee and ankle joints is associated with synovial hypertrophy, and scoring of the conventional radiographs using Arnold-Hilgartner staging is useful for the prediction of synovial hypertrophy...   Reproducibility and Sensitivity to Change of 5 Methods for Scoring Hand Radiographic Damage in Patients with Rheumatoid Arthritis - Journal of Rheumatology Conclusion: All methods have high intraobserver and interobserver reliability. The interrater reproducibility decreases with disease severity. Recent modified methods perform best to detect changes, but the advantages of SENS seemed to be lost when applied on hand radiographs alone. Training the readers appears to be essential... May 06, 2005   Metacarpophalangeal Pattern Profile Analysis in Leri-Weill Dyschondrosteosis - Acta Radiologica Conclusion: MCPP is not age-related and the analysis can be applied at any age, facilitating early diagnosis of LWD. In view of its availability, low costs, and diagnostic value, MCPP analysis should be considered as a routine method in the patients of short stature where LWD is suspected...   Congenital Dislocation of the Patella - American Journal of Roentgenology Conclusions: Sonography can clearly illustrate the presence and location of the laterally displaced patella and the anatomy of adjacent joint structures. The high resolution for soft-tissue, cartilaginous, and bony structures of the immature skeleton makes sonography a valuable tool in the management of congenital dislocation of the patella. Conventional radiography is a simple method for diagnosis once ossification of the patella has commenced and for postoperative follow-up...   Long-term Results of the Dial Osteotomy in the Treatment of High-grade Acetabular Dysplasia - Clinical Orthopedics and Related Research The dial osteotomy, an acetabular reorientation procedure based on radiographs, was developed by R. H. Eppright for treatment of hip dysplasia; however, long-term results are not recorded. The aim of this study was to evaluate retrospectively the results of the dial osteotomy as done in 37 patients (44 hips) at an average followup of 12.6 years. Articular pressures with the application of a time and pressure algorithm were calculated from radiographs to correlate calculated intraarticular pressures with progression of degenerative disease...     May 05, 2005   Demonstration of Large Bladder Diverticulum on Bone Scan - Clinical Nuclear Medicine A 74-year-old man underwent low anterior resection for rectal cancer. Technetium-99m methylene diphosphonate (MDP) bone scanning was performed as part of the patient's postoperative follow-up study. Scans revealed an area of increased tracer uptake in the left hemipelvis. Coronal single-photon emission computed tomography and caudal images clearly separated the lesion from the skeletal structures...   The Acromiohumeral and Coracohumeral Intervals Are Abnormal in Rotator Cuff Tears with Muscular Fatty Degeneration - Clinical Orthopedics and Related Research We sought to determine how various types of full-thickness rotator cuff tears, fatty degeneration of the rotator cuff muscles, duration of symptoms, and mechanism of injury affect the sizes of the acromiohumeral and coracohumeral intervals. We studied 206 shoulders with rotator cuff tears that had surgical treatment. The acromiohumeral interval (anteroposterior radiograph) and the coracohumeral interval (computed tomogram) were measured on preoperative imaging studies... May 02, 2005   Synovial osteochondromatosis: the spectrum of imaging findings - Australasian Radiology Imaging plays a vital role in the diagnosis and management of synovial osteochondromatosis, a proliferative disorder of the synovium with associated loose body formation. The aim of this pictorial review is to illustrate the radiographic, computed tomographic and magnetic resonance appearances of various stages of the disease...   Radiation exposure in rheumatology practice - Seminars in Arthritis and Rheumatism Appropriate care of patients within the rheumatology practice frequently necessitates the use of imaging procedures that utilize ionizing radiation, such as radiographs, computed tomography scans, and bone densitometry. If ordered prudently, the benefits of these imaging procedures supersede the risks imposed by their radiation exposures...   Measurement error in computed tomography pelvimetry - Australasian Radiology Computed tomography pelvimetry is still used in clinical practice. We wished to quantify observer error in order to assess the level of confidence with which pelvic measurements can be described as adequate or inadequate. Anteroposterior inlet, anteroposterior outlet, transverse inlet and interspinous distances were measured from 11 CT pelvimetry examinations by five observers at one institution. Three CT pelvimetries were measured by five observers at a second institution...