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Biomedical subjects

Q Anderson

Publications and source records attributed to Q Anderson.

9 recordsLinked to original sources
PubMed2001

Automating clinically relevant prefetch processes in picture archiving and communication systems solutions.

As picture archiving and communication systems (PACS) hit the mainstream of projects gaining attention and priority in healthcare organizations, the promise of achieving better operational efficiencies in the radiology department is at the forefront of the financing discussions. Although some positive economic returns have been documented from the early proponents of PACS, most of the PACS installations are still working through operational changes in regards to digital image prefetching to achieve this objective. The lynchpin for achieving the desired operational efficiency is the enabling of an automated, clinically relevant prefetch process for comparison studies from the digital archives. This report explores the solutions deployed at two hospital systems in Minneapolis to utilize a "comparative region of interest" data element to augment the body region information typically available for prefetching in the PACS system. With this information, the prospective PACS implementer will know how to build in their body region requirements up-front in order to maximize their operational efficiency benefits later.

Humans↗
PubMed2001

The relationship between clinical and MRI findings in patients with unilateral temporomandibular joint pain.

BACKGROUND: With the advent of magnetic resonance imaging, or MRI, clinicians and researchers have sophisticated techniques by which to assess the anatomy of the temporomandibular joint, or TMJ. Imaging is indicated when the results will affect the patient's care beyond that which can be gained from a complete clinical assessment. One of the primary indications for treatment of patients with temporomandibular disorders, or TMDs, is jaw pain, including TMJ pain. Therefore, it is necessary to assess whether MRI-depicted TMJ findings are associated with TMJ pain. This study assessed the relationship between TMJ pain and clinical and MRI findings. METHODS: Subjects consisted of 85 patients with unilateral jaw pain in the area of the TMJ. The contralateral, nonpainful TMJ served as the matched control. All patients underwent a complete stomatognathic examination that included palpation of both TMJs. No care was given and no anti-inflammatory medications were prescribed until bilateral MRIs were obtained within one week. RESULTS: The authors found significant relationships between the side of reported jaw pain and the patient's report that palpation of the TMJ was painful and between the side of reported pain and the presence of MRI-detected effusions. The authors found no relationship between the side of reported pain and the presence of a disk displacement, or DD, or between the presence of effusions and DD on either side of the jaw. CONCLUSION: Although MRI-depicted effusions of the TMJ were associated with reports of TMJ pain, there was a high level of false-positive and false-negative findings. The results indicate that palpation of the TMJ is more accurate than MRI-depicted effusions in identifying the TMJ as the source of pain for patients with unilateral jaw pain. CLINICAL IMPLICATIONS: The results of this study suggest that palpation of the TMJ is superior to MRI in identifying the joint as the source of pain. Therefore, the most cost-effective and valid test to determine if the TMJ is a source of jaw pain is a complete clinical assessment.

Adolescent↗
PubMed1995

Magnetic resonance imaging assessment of acute soft tissue injuries to the temporomandibular joint.

PURPOSE: This study involves the use of magnetic resonance imaging (MRI) to document acute soft tissue injuries involving the temporomandibular joint (TMJ) after condylar fractures. MATERIALS AND METHODS: Patients with condylar fractures whose clinical and radiographic examinations, as well as the mechanism of their injury, suggested specific damage to the temporomandibular soft tissues underwent MRI scanning. Thirteen patients who met selected criteria were included in this study. RESULTS: Ten patients demonstrated disc avulsion, usually in the anterior or medial direction. Two patients had disruption of the lateral capsule, and one patient showed no MRI evidence of acute injury. Joint effusions were frequently demonstrated. CONCLUSIONS: MRI of condylar fractures in those patients with displacement, or in whom the mechanism of injury would predispose them to posttraumatic internal derangement, may assist the clinician in determining whether primary or delayed treatment is indicated. Furthermore, MRI may be a useful resource for enhancing the level of understanding regarding soft tissue changes that occur in the TMJ after acute condylar trauma.

Cartilage, Articular↗
PubMed1990

Idiopathic acquired diffuse osteosclerosis in a young woman.

We describe a young woman who acquired a painful, diffuse osteosclerosis of the cervical, thoracic, and lumbar spine, pelvis, and long bones of the legs as an adult. Bone densitometry showed a large increase in apparent bone density. Skeletal radiographs demonstrated progressive endosteal and periosteal thickening of the cortices. A bone scan showed increased uptake of radiolabel. The serum total alkaline phosphatase and 1,25-(OH)2D3 levels were substantially elevated and the immunoreactive PTH was mildly elevated. Bone biopsy showed increased bone turnover, especially on endocortical and intracortical surfaces, but the structural indices were normal. By 4 years after presentation the bone pain had remitted and the serum alkaline phosphatase, 1,25-(OH)2D3, and PTH were normal. No cause for the occurrence of osteosclerosis in this patient could be found.

Absorptiometry, Photon↗