Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Norman L. Martin"'
Autor:
Michael A. McFadden, Glendon G. Cox, Larry T. Cook, Donald A. Eckard, Norman L. Martin, Michael F. Insana, Timothy J. Hall, Linda A. Harrison
Publikováno v:
Medical Physics. 23:127-132
We examined the ability of radiologists to detect pulmonary nodules in computed radiographic (CR) chest images subjected to lossy image compression. Low-contrast 1-cm diameter targets simulating noncalcified pulmonary nodules were introduced into cli
Autor:
Larry T. Cook, C. H. J. Chang, J. M. Crystal, Michael A. McFadden, S. J. DwyerIII, J. Spicer, Arch W. Templeton, Linda A. Harrison, Norman L. Martin
Publikováno v:
European Radiology. 2:483-487
Mammography and accurate microcalcification detection require very good spatial resolution. We have compared the diagnostic capabilities of reduced-exposure, third-generation, 5 cycles/mm computed radiography (CR) phosphor plates with conventional sc
Autor:
Larry T. Cook, Samuel J. Dwyer, J L Quale, John M. Bramble, Norman L. Martin, Mark D. Murphey
Publikováno v:
AJR. American journal of roentgenology. 158(1)
Computed radiography is a 2K x 2K x 10 bit digital radiographic system that replaces the film-screen combination with a photo-stimulable phosphor plate. The advantages of this relatively new technology include linear detector response, improved detec
Publikováno v:
Radiology. 174(3 Pt 1)
Fifty-six radiographs of nondisplaced or minimally displaced fractures of the extremities and an equal number of studies with normal findings were selected and digitized to produce spatial resolution varying from 5.75 to 0.72 line pairs per millimete
Autor:
Norman L. Martin
Publikováno v:
Radiology. 195:880-880
Publikováno v:
International Journal of Radiation Applications and Instrumentation. Part B. Nuclear Medicine and Biology. 14:219-222
We have utilized 89Sr as palliative treatment for bone pain secondary to metastatic cancer in the skeleton of over 200 patients. The best results have been in patients with carcinoma of the prostate (80% response rate) and breast (89%). Results in a
Publikováno v:
American Journal of Roentgenology. 143:343-348
Technetium-99m methylene diphosphonate bone scans were performed in 21 patients with giant cell tumors of bone. All tumors showed increased radiophosphate uptake, often more intense at the tumor periphery than in its center. However, radionuclide bon
Publikováno v:
Journal of Pediatric Orthopaedics. 1:171-180
Experimental testing indicates that the neck-shaft angle of the proximal femur can be reliably measured from biplanar radiographs, but torsion cannot. Calculated torsion varies significantly from true torsion as a function of the error created by fem
Autor:
Mark D. Murphey, Larry T. Cook, John M. Bramble, W H Anderson, K. S. Hensley, Norman L. Martin
Publikováno v:
Radiology. 170:133-136
A study was conducted on the use of an irreversible compression technique, Fourier quantization, to reduce the amount of digital data needed for an image. The effect of image compression was studied in radiographs obtained to diagnose subperiosteal b
Publikováno v:
Radiology. 114:127-134
Over 200 patients were examined by B-scan ultrasound for suspected pancreatic disease; in 94 cases a final diagnosis was proved. The diagnostic accuracy of ultrasound, upper gastrointestinal examination, isotope pancreatography, and arteriography is