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Measuring tip–apex distance using a picture archiving and communication system (PACS)
Statistical analysis between measurements showed statistically significant differences (P < 0.05) of TAD in AP and lateral (abduction and adduction) views. A graph to show the relationship between hip rotation and TAD was conducted and demonstrates a linear correlation.
If an anteriorly placed hip screw is not seen to be breaching the articular surface on a view taken in internal rotation, the screw is definitely not in the joint. Beware of a hip screw appearing very close to the joint surface on a view taken in external rotation or abduction as it could be within the joint. The converse may apply to a posteriorly placed screw.
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![]() Health Policy, Volume 9, Issue 1, 1988, Pages 91-101 Robert Hindel, Walter Preger Abstract PAC (picture archiving and communication) systems are widely discussed and promoted as the organizational solution to digital image management in a radiology department. For approximately two decades digital imaging has increasingly been used for such diagnostic modalities as CT, DSA, MRI, DR (Digital Radiography) and others. PACS are seen as a step toward high technology integration and more efficient management. Although the acquisition of such technology is investment intensive, there are well-founded projections that prolonged operation will prove cost justified. Such justification can only partly be derived from cost reduction through PAC with respect to present department management - the major justification is preparation for future economic pressures which could make survival of a department without modern technology difficult. Especially in the United States the political climate favors ‘competitive medicine’ and reduced government support. Seen in this context PACS promises to speed the transition of Health Care Services into a business with tight resource management, cost accounting and marketing. The following paper analyzes cost and revenue in a typical larger Radiology Department, projects various scenarios of cost reduction by means of digital technology and concludes with cautious optimism that the investment expenses for a PACS will be justified in the near future by prudent utilization of high technology. ![]() |
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Measuring tip–apex distance using a picture archiving and communication system (PACS)