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91.
During computed tomography (CT) pelvimetry of two pregnant women, bony abnormalities of the fetuses were noted on the scout images that were not confirmed at delivery. To explore the cause of these artifacts, specimen long bones were manipulated in various ways during CT scout imaging. Artifacts like those seen during in vivo imaging were found to be caused by motion of the object. The CT scout view is an example of an image produced by a digital system that uses a scanning beam. This type of digital system is being used for several types of body imaging including screening for scoliosis and chest radiography. Attention to motion artifacts should decrease diagnostic errors and aid further development of these systems. 相似文献
92.
Hepatic parenchymal gas was demonstrated by computed tomography in a boy who had sustained severe blunt trauma to the abdomen 12 hours earlier. There was no clinical evidence of infection. Although previous reports have suggested that hepatic parenchymal gas indicates the presence of infection, such gas may also be a manifestation of severe blunt trauma without infection. 相似文献
93.
94.
Human breast lesions: characterization with proton MR spectroscopy 总被引:31,自引:0,他引:31
95.
JESPER NØRREGAARD PHILIP TØNNESEN KÅRE SIMONSEN LARS PETERSEN URBAIN SÄWE 《Addiction (Abingdon, England)》1992,87(8):1189-1194
Reports of smoking cessation studies often claim that many relapsed subjects reduce their smoking. We investigated the smoking habits of relapsers 1 year after quitting in a smoking cessation trial using nicotine or placebo patches. All 289 participants in that study were summoned to a 1-year follow-up visit–148 (57%) of 259 relapsers attended, as did all 30 sustained abstainers. Fewer than 1% of the subjects had quit spontaneously after the primary relapse. Daily cigarette consumption, standard nicotine yield per cigarette, saliva cotinine concentration, expired carbon monoxide level and two nicotine dependency scales were assessed at entry and at the 1-year follow-up. In five of these six smoking-related characteristics, there was a small but significant mean reduction of 7%-27%. A significant weight gain of 0.5 ± 2.9 kg (mean ± SD) was recorded in the relapsers compared with 4.8 ± 4.2 kg for abstainers (p < 0.001). It is concluded that smoking habits in relapsers are relatively unchanged, and thus the most important outcome measure in smoking cessation trials is abstinent subjects. 相似文献
96.
P.N. Cooper D. Neary D. Denning G.M. Cleator RE. Klapper 《European journal of neurology》1996,3(3):267-271
Two cases of Coxsackie B viral meningo-encephalitis in pregnant women are described. Both patients recovered well and delivered healthy babies, but because of delay in establishing the aetiology of their infections both mothers, and one child, received acyclovir therapy. The differential diagnosis of non-pyogenic meningo-encephalitis in late pregnancy can present particular problems: clinicians caring for such women should remain aware of the potential for enteroviral infection in their patients, and take appropriate action to prevent cross-infection in neonatal units. 相似文献
97.
K van Laarhoven J R Juttmann J A Roukema 《Nederlands tijdschrift voor geneeskunde》1989,133(14):736-737
Cryptorchidism increases the incidence of malignant testicular tumours. The case is described of a normally functioning male patient with a tumour in an undescended testis, in whom a special type of intersexuality was found: the persistent müllerian duct syndrome, one of the types of male pseudohermaphroditism, in which no disturbances of virilisation occur and which is often associated with cryptorchidism and other developmental anomalies. 相似文献
98.
99.
Roberts DA; Detre JA; Bolinger L; Insko EK; Lenkinski RE; Pentecost MJ; Leigh JS Jr 《Radiology》1995,196(1):281
100.
Adverse reactions associated with autologous blood transfusion: evaluation and incidence at a large academic hospital 总被引:10,自引:0,他引:10
RE Domen 《Transfusion》1998,38(3):296-300
BACKGROUND: It is acknowledged that autologous blood is the safest for the patient to receive. However, it is generally not appreciated that transfusion reactions to autologous blood may occur, despite the fact that it is the patient's own blood. STUDY DESIGN AND METHODS: A retrospective review of all transfusion reactions reported to a hospital transfusion service from 1991 through 1996 was performed, and all reactions to autologous blood were further investigated. RESULTS: Reported adverse reactions to autologous blood composed 2.1 percent of all transfusion reactions investigated in the hospital, involving 0.16 percent (15/9,353) of all transfused preoperatively donated autologous red cell units and 0.027 percent (5/18,506) of all intraoperatively salvaged units. Further investigation revealed that 60 percent (12/20) of these adverse reactions were felt to be clinically important and directly attributable to the autologous blood transfusion. Adverse reactions included febrile nonhemolytic (5) and allergic (4) reactions, an acute hemolytic transfusion reaction secondary to a clerical error (1 intraoperatively salvaged unit), and other nonsignificant adverse reactions (2). Eight adverse reactions were determined these reactions to be unrelated to the autologous transfusion. CONCLUSION: Despite the fact that the blood given is the patient's own blood, transfusion reactions to autologous blood do occur. As it is for allogeneic transfusion, any suspected adverse reaction to autologous blood transfusion should be investigated. 相似文献