PURPOSE: We sought to compare the sensitivity and specificity of panoramic radiographs with those of coronal computed tomography (CT) scans in the diagnosis of mandibular condylar fractures in the pediatric population. METHODS: Medical, dental, and radiographic records of patients who presented between 1995 and 2000 were evaluated for injuries involving ...

STUDY DESIGN: A comparative study investigated the use of plain static radiographs, flexion-extension radiographs, and thin-section helical computed tomography (CT) scanning in the assessment of anterior lumbar interbody fusion using carbon fiber cages. OBJECTIVE: To compare plain static radiographs, flexion-extension radiographs, and thin-section helical computed tomography scans in the assessment ...

The availability of lumbar interbody cages has fuelled renewed interest in interbody fusion. Despite this, there is no consensus regarding the best non-invasive method for evaluation of interbody fusion, especially where cages have been used. The purpose of this study was to determine whether high-quality thin-slice (1- to 3-mm) computed ...

A 9-month-old neutered male cat was referred because of left forelimb lameness. Physical examination, laboratory analysis, and radiographic examination of the entire skeleton were performed. The radiographic diagnosis was bilateral radio-ulnar synostosis with secondary elbow malformation. A comparison between clinical and radiographic findings of the cat and those described in ...

A xanthoma, located in the ulna, not accompanied by the traditional cutaneous and tendinous manifestations (xanthoma and xanthelasma) and with a late onset of alterations in lipid values, was diagnosed in a 56-year-old man. The lesion had a slow but constant growth leading to internal calcifications. Hyperlipidemia Type IIB occurred ...

OBJECTIVE: To describe the characteristics, radiographic appearance, and significance of intravertebral clefts in vertebral compression fractures (VCFs) of patients with osteoporosis presenting for vertebroplasty. METHODS: This was a prospective radiographic study of 50 consecutive patients with 82 VCFs who underwent vertebroplasty at a tertiary referral center. Patients underwent imaging preoperatively ...

The evidence for the diagnostic accuracy of the four main imaging modalities used in low back pain (plain radiographs, CT, MR imaging, radionuclide bone scans) is variable in quality and limits the ultimate conclusions regarding the effectiveness and cost-effectiveness of diagnostic strategies. In addition, the frequent finding of abnormalities in ...

PURPOSE: To determine the incidence and characteristics of bifid mandibular canals. METHODS: A retrospective study was performed using panoramic radiographs of 2012 patients subjected to dental treatment in the Dental Clinic of the Valencia University Dental School (Valencia, Spain) between 1996 and 1999. The goal was to investigate the presence ...

OBJECTIVE: To better understand the consultative role of the radiology resident after hours. METHODS: Data were collected prospectively from Mar. 15, 1999, to Jan. 5, 2001, during on-call coverage hours at our university hospital. Urgent radiologic examinations for which the on-call resident rendered a preliminary interpretation were included in our ...

The tympanic bullae of 20 previously healthy cadaver animals were randomly filled with sterile saline or air. The heads were positioned using tape ties and a rostrocaudal open mouth radiograph taken. The resulting radiographs were assessed by a blinded ECVDI diplomate, with each tympanic bulla being recorded as being either ...

An increased incidence of osteoarticular tuberculosis (TBC) has been reported during recent years. We report a case of TBC arthritis of the knee in which magnetic resonance tomography (MRI) provided images suggestive of this finding, in contrast to plain radiographs and joint sonography. The diagnosis was confirmed with culture for ...

An audit of 202 routine abdominal and pelvic ultrasound examinations was carried out to evaluate the clinical performance and interpretation of these scans by radiographers and compare them with radiologists, and to investigate the extended role of radiographers in performing these scans. Each scan was first performed by a radiographer ...

e analysed the CT scans and radiographs of 76 vertebrae in 49 patients who underwent vertebroplasty for painful osteoporotic compression fractures. Leaks of cement were classified into three types: those via the basivertebral vein (type B), via the segmental vein (type S), and through a cortical defect (type C). More ...

The muscles of 70 patients with lower limb shortening due to various etiologies were studied using three radiographic diagnostic methods: contrast radiography (CR), ultrasonography (US), and computed tomography (CT). The studies were performed before surgery, during lengthening using the Ilizarov external fixator, during the fixation period following distraction, and after ...

The clinical and imaging findings of patients with a confirmed diagnosis of tuberculous spondylitis were retrospectively analyzed to assess the diagnostic value of magnetic resonance imaging (MRI) and determine the different patterns of spine involvement. Fifty-three patients with plain radiographs and MRI of the entire spinal column were included in ...

In recent years the choice of radiographic methods available in the investigation of renovascular hypertension has increased significantly. It can be difficult for the clinician to decide which patients will benefit from screening and which modality to choose. This article seeks to address some of these issues. The role of ...

Prospectively, with randomized segment-treatment assignment, and with blinded evaluators, lumbar motion segments in Cercopithecus monkeys were analyzed for macroscopic and radiological changes 24 weeks after nucleotomy and nucleotomy with additional intradiscal application of different hyaluronic acid formulations versus untreated control segments. The objective was to find out whether hyaluronic acid ...

The purpose of this study was to describe isolated injury of the cuboid bone as a potentially radiographically occult cause of foot pain. The imaging studies of 17 patients, 13 women and 4 men aged 17-79 years (average 45 years), who presented with pain over the lateral aspect of the ...

OBJECTIVE: The purpose of this study was to summarize the clinical manifestation, plain-film radiography, and computed tomographic (CT) scan features of arteriovenous malformations (AVMs) of the jaws on the basis of a series of 12 patients. STUDY DESIGN: This study group comprised twelve patients with AVM of the jaws from ...

The extent to which radiographs of the hands and feet can contribute to the diagnosis of early rheumatoid arthritis (RA) has received little research attention. Yet, the workup for recent-onset inflammatory joint disease usually includes radiographs of the hands and feet. We reviewed the literature for data on the value ...

OBJECTIVES: Quantitatively evaluate plain radiographs, relative to computed tomography (CT) scans, for assessment of articular fragment displacement (step and gap) in displaced acetabular fractures and in canine osteotomized acetabular specimens. DESIGN: Retrospective evaluation of a consecutive series of CT scans and plain radiographs of patients with displaced acetabular fractures and ...

Consolidation in the lung is seen on radiographs or computed tomography (CT) as increased areas of attenuation that obscure the underlying pulmonary vasculature. There are numerous causes of multifocal consolidative opacities. If the symptoms are acute (days to weeks), the most common causes include edema, pneumonia, and hemorrhage. Depending on ...

The new Ionising Radiation (Medical Exposure) Regulations 2000 (IR (ME)ER) were implemented in January 2001. These regulations state that "the referrer must record in the patient's notes that a radiograph was taken and what it showed". As a result it is now incumbent upon the orthopaedic surgeon to document formally ...

We report on a 38-year-old man with post-traumatic posterior displacement of the atlas with respect to the axis without any associated fracture or neurological deficit caused by the displacement. Radiographs, computed tomography (CT) and magnetic resonance imaging (MRI) revealed posterior displacement of the atlas with the odontoid peg lying anterior ...

Comparing skeletal structures between antemortem and postmortem chest radiographs is widely used by forensic specialists from many disciplines to positively identify unknown decedents. However, validity assessments of this method have been fairly limited. This study had three objectives: 1) to quantify the reliability of ante- and postmortem chest radiograph comparison ...

A glaucoma drainage implant was detected on plain skull radiographs before MR imaging examination of the brain. The patient was denied the MR imaging for fear of dislodging the "metallic foreign body." The Baerveldt glaucoma drainage implant was mistakenly identified as an orbital metallic object based on its radiographic characteristics. ...

OBJECTIVE: Panoramic radiographs, computerized tomography (CT), and conventional spiral tomographic (Scanora, Soredex, Helsinki, Finland) radiographs were compared for their ability to locate the mandibular canal in the buccolingual direction. Furthermore, the relationship between the cortication of the mandibular canal in panoramic radiographs and the location of the canal in both ...

OBJECTIVES: To determine who reads plain film radiographs, how quickly radiologists' interpretations are available, how many initial readings require correction, and how satisfied emergency physicians (EPs) are with radiology in emergency departments (EDs) with emergency medicine (EM) residency programs. METHODS: A questionnaire was sent to the chairs of all U.S. ...

OBJECTIVE: To determine the agreement between two-dimensional radiograph and three-dimensional CT in the evaluation of the secondary alveolar bone grafting. METHODS: Nine complete cleft lip and palate patients (8 UCLP, 1 BCLP) at least 6 months post secondary alveolar bone grafting were selected. The mean age of the patients was ...

In this cross-sectional study we looked at the radiographic evidence of osteoarthritis (OA) of the knee in 300 randomly chosen patients attending 14 primary care facilities for different medical conditions. Radiographic OA was seen in 89 out of 167 males (53.3%) and in 81 out of 133 females (60.9%). The ...

This study examined the feasibility of performing radiographic studies on patients wearing standard-issue body armor. The Kevlar helmet, fragmentation vest, demining suit sleeve, and armor plate were studied with plain film and computed tomography in a simulated casualty situation. We found that the military helmet contains metal screws and metal ...

Focal fibrocartilaginous dysplasia is a rare benign entity, previously described as a factor responsible for causing tibia vara at the walking age. We report here the case of a child with tibia valga due to focal fibrocartilaginous dysplasia of the lateral part of the proximal tibia. To our knowledge, this ...

Paediatric post-traumatic cortical defects, although rare, are predominately seen affecting the distal radius following a greenstick or torus fracture. We review the literature and present a further two cases supported by CT and MRI. Images from an acute greenstick fracture are also presented to help understand the pathogenesis. Defects are ...

The purpose of this study was to produce an anatomic reference for computed tomography (CT) of the head of the foal for use by radiologists, clinicians, and veterinary students. The head from each of 2 foals, euthanized for reasons unrelated to head pathology, was removed and prepared for CT scanning. ...

A 15-year-old boy was incidentally found to have bilateral sacroiliitis. Radiographs showed erosions and subchondral sclerosis of both sacroiliac joints. His ESR was raised and HLA-B27 was positive. Presumptive diagnosis was ankylosing spondylitis. The clinical and imaging features, including the radiographical classification, of sacroiliitis are discussed. Knowledge of the patterns ...

AIM: To assess medical emergency radiology referral practice compared with a set of French guidelines and to measure the efficiency of computer-based guidelines on unnecessary medical imaging. MATERIALS AND METHODS: All radiological requests were computerized in the medical emergency departments of two French teaching hospitals. During control periods, radiological requests ...

OBJECTIVE: To present and discuss the clinical manifestations, radiographic features, and treatment of a patient with diffuse idiopathic skeletal hyperostosis complicated by dysphagia. This case serves as an educational tool by bringing attention to an uncommon complication of a common disorder. An emphasis is placed on diagnostic imaging. CLINICAL FEATURES: ...

OBJECTIVE: To determine the rate of progression of radiographic joint space narrowing (JSN) and the factors that predict it in symptomatic clinic patients with knee osteoarthritis (OA). METHODS: In total 1,507 patients with knee OA were studied with extended weight-bearing anterior-posterior views of the knee as part of a longitudinal ...

OBJECTIVE: To evaluate the influence of the validation method on the diagnostic accuracy and the relative comparison of eight radiographic systems for caries detection. METHODS: Three hundred and thirty-eight approximal and 145 occlusal surfaces were radiographed under standardised conditions using six CCD-based sensor systems: MPDx (Dental/Medical Diagnostic Systems Inc., Woodland ...

Rasterstereography delivers only indirect information about the three-dimensional shape of the spine. Therefore, validation with radiologic methods is necessary, in particular in severe scolioses above 50 AE Cobb. Comparison with conventional a.p. radiographs yielded satisfactory results for scolioses up to 50 AE Cobb, but only in frontal view, i.e. in ...

OBJECTIVE: Intraarticular osteoid osteoma often has subtle radiographic findings and nonspecific clinical features; further diagnostic workup of unexplained joint pain may involve musculoskeletal sonography. We describe the sonographic features of intraarticular osteoid osteoma in three consecutive patients with radiographic, CT, and MR imaging correlation. CONCLUSION: The sonographic findings of painful ...

OBJECTIVE: The purpose of this study was to compare the information gathered from dental radiography and high resolution computed tomography (CT) scans with regard to the detection of the endodontic lesion and its relation to the important neighboring anatomic structures such as the mandibular canal. STUDY DESIGN: Fifty patients with ...

Early diagnosis of brucellar spondylodiscitis is often difficult because of the long latent period. Radiographs of the spine, bone scan, and computed tomography (CT) scan provide insufficient data. Among 25 patients with brucellar spondylodiscitis studied by magnetic resonance imaging (MRI), 9 were in the acute stage and 16 were in ...

With use of radiopaque implanted objects as internal fiducial markers, the authors developed and evaluated a technique for coregistering computed tomographic (CT) and computed radiographic images to help determine three-dimensional location information for implant electrodes in the cochlea in phantoms and patients. Three-dimensional positional data from CT were assigned on ...

Sixty-four dogs with histories and clinical signs consistent with cervical intervertebral disk disease were presented for evaluation. Survey spinal radiographs were obtained, followed by myelography. In 61% of the survey radiographs, evaluators identified sites of disk extrusion or protrusion based on radiographic findings. Of those radiographs where a site was ...

An auxiliary CT tabletop was designed and manufactured such that radiographic images might be acquired, with use of a ceiling-mounted X-ray tube, without removing the patient from the CT table. The tabletop required no modifications to the original CT table housing and did not produce artifacts in the CT images. ...

AIM: We report our experience with the first 1000 patients with non-traumatic low back pain (LBP) without radiculopathy undergoing limited sequence magnetic resonance imaging (MRI) instead of plain radiography. METHODS: Between January 1996 and December 1998, 1042 patients with low back pain unresponsive to conservative treatment were examined using a ...

Electronic medical images are an efficient and convenient format in which to display, store and transmit radiographic information. Before electronic images can be used routinely to screen and diagnose patients, however, it must be shown that readers have the same diagnostic performance with this new format as traditional hard-copy film. ...

Two auxiliary methods of diagnosing nasopharyngeal airway obstruction were compared. Cephalometric radiography and nasopharyngeal videoendoscopy were evaluated for efficacy in terms of reproducibility and validity. Thirty orthodontic patients (7 to 12 years of age) seeking otorhinolaryngologic treatment for mouth breathing, or mouth and nose breathing, had nasopharyngeal endoscopy and radiographic ...

We report two cases of intraosseous lipoma arising in the calcaneus of a 36-year-old and a 22-year-old women complaining of heel pain. Plain radiographs and computed tomography scans revealed cystic lesions in the calcaneus triangle. On magnetic resonance images, the lesions had high signal intensities on both T1-weighted and T2-weighted ...