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排序方式: 共有812条查询结果,搜索用时 15 毫秒
41.
Hyperbilirubinemia, hypocarbia and periventricular leukomalacia in preterm infants: relationship to cerebral palsy 总被引:3,自引:0,他引:3
RS Ikonen MO Janas MJ Koivikko P Laippala EJ Kuusinen 《Acta paediatrica (Oslo, Norway : 1992)》1992,81(10):802-807
This study comprised 103 preterm infants with a gestational age less than 33 weeks who were born in Tampere University Hospital and who were followed up to two years of age. Sixty-four perinatal variables were compared to ultrasound findings in the neonatal period and neurologic handicap at the age of two years. Duration of hypocarbia (PCO2 < or = 30 mmHg) during the first 72 h and hyperbilirubinemia (the mean level of serum total bilirubin) at three days of age were independently and significantly related to periventricular leukomalacia, but not directly to cerebral palsy. The only perinatal variables related independently and significantly to cerebral palsy at two years of age were periventricular leukomalacia and ventriculomegaly. According to these results, periventricular leukomalacia was the main predictor of cerebral palsy in preterm infants. In addition to hypocarbia, hyperbilirubinemia may also be involved in the pathogenesis of extensive (severe cystic) periventricular leukomalacia. 相似文献
42.
SL Stuckey EJ Gilford PJ Smith M Kean 《Journal of Medical Imaging and Radiation Oncology》1995,39(4):350-355
This preliminary study was designed to investigate the ability of multiple axial volume three-dimensional fourier transform (3DFT) time-of-flight (TOF) magnetic resonance angiography (MRA) to depict the carotid bifurcation in the early post-carotid endarterectomy period. Five patients underwent intra-operative digital subtraction angiography (DSA) and carotid MRA within 5 days of carotid endarterectomy. An axial volume fast imaging in steady-state precession (FISP) gradient-echo 3DFT TOF carotid MRA technique in this limited series appeared to display accurately the surgically significant abnormalities at the carotid bifurcation after endarterectomy. However, in normal or near-normal intra-operative DSA studies, overestimation of internal carotid artery stenoses was encountered. Postoperative MRA demonstrates potential as a useful non-invasive investigation after carotid endarterectomy but should be interpreted with caution until larger studies become available. 相似文献
43.
A Holden JEM Anderson FJ Ives D Taylor EJ Wylie FRACR R Adamson 《Journal of Medical Imaging and Radiation Oncology》1996,40(4):391-397
The early clinical experience with a 3-Dimensional Fourier Transform Gradient Echo sequence with fat suppression in the evaluation of breast masses is reported. Ten female patients with breast malignancies were pre-operatively evaluated with this sequence and the results compared with the pathological specimens. The scanning protocol included a noncontrast sequence followed by an immediate post-contrast sequence (completed 4.5 min after intravenous contrast injection) and a delayed sequence. Images were assessed for maximum lesion and parenchymal enhancement, lesion size and additional enhancing abnormalities. In six patients, malignant masses enhanced maximally on the immediate post-contrast sequence with parenchyma enhancing maximally on delayed images. In three cases, there was preferential enhancement of malignant lesions over normal parenchyma but to a similar degree on both post-contrast sequences. In one case, both the lesion and parenchyma enhanced maximally on the delayed sequence. Magnetic resonance assessed lesion size accurately and also detected satellite malignancies in one case. However, lesion grade, associated in situ carcinoma and lymphovascular invasion did not impact on lesion enhancement. In this small series, a contrast-enhanced, fat-suppressed 3-D Gradient Echo Sequence detected breast carcinoma with high sensitivity. The technique holds promise but further evaluation is required. 相似文献
44.
A 30‐year‐old man presented with livid‐red to brownish, strongly infiltrated, and markedly elevated plaques of 1–5 cm in diameter with fine scaling on the buttocks, lower trunk, and lower extremities of 2 years’ duration ( Figs 1 and 2 ). Complete blood cell count and routine serum chemistry were within normal limits, with the exception of erythrocyte sedimentation rates of 18 and 36 mm in the first and second hour, respectively, and a C‐reactive protein level of 8.1 mg/dL. Serum angiotensin converting enzyme (ACE) levels were elevated at 90 U/L (normal values, 18–60 U/L), while serum lysozyme levels, vitamin D, and calcium were normal. The patient presented an anergic reaction to the seven antigens of Multitest Merieux.
45.
Bakker SL Boon AJ Wijnhoud AD Dippel DW Delwel EJ Koudstaal PJ 《Acta neurologica Scandinavica》2002,106(3):123-127
OBJECTIVE: To study the relationship between cerebral hemodynamics and clinical performance in normal pressure hydrocephalus (NPH), before and after surgery. MATERIAL AND METHODS: Ten patients were studied prospectively before and 3 months after shunt surgery by means of transcranial Doppler (TCD). Clinical performance was scored by means of an NPH scale and the modified Rankin scale. RESULTS: Peak systolic and mean cerebral blood flow velocity (MCV) were lower and cerebrovascular CO2 reactivity was higher after shunt surgery. The three patients with clinical improvement had higher preoperative end diastolic cerebral blood flow velocity and MCV. All postoperative cerebral blood flow velocities were higher in patients with clinical improvement. CONCLUSION: Our data suggest that higher cerebral blood flow velocity before surgery in patients with NPH is related to clinical improvement after shunt surgery. Cerebral hemodynamic parameters may develop into predictors of successful shunt surgery in patients with normal pressure hydrocephalus. 相似文献
46.
Aspergillus endocarditis in chronic granulomatous disease 总被引:2,自引:0,他引:2
We report the first case, to our knowledge, of Aspergillus endocarditis in chronic granulomatous disease in a patient who also had an atrial septal defect. A diagnosis was made on culture of the organism from the mass despite extensive prior investigation. The presence of distinctive skin lesions as a diagnostic clue of fungaemia is highlighted. Possible advances in diagnosis by detection of fungal cell wall components and in prophylaxis by use of itraconazole are referred to. We conclude that fungal endocarditis should be considered in this condition, especially in the presence of a structural heart defect. 相似文献
47.
48.
Ulrike Casper Kristina Seiffert Edgar Dippel Christos C. Zouboulis 《Der Hautarzt; Zeitschrift für Dermatologie, Venerologie, und verwandte Gebiete》1998,49(11):850-854
Zusammenfassung
Mundschleimhautl?sionen sind wiederholt in Assoziation mit Psoriasis beschrieben worden, insbesondere mit der pustul?sen Form.
Ob diese Schleimhautl?sionen als orale Manifestation einer Psoriasis zu werten sind, ist noch umstritten. Wir berichten über
2 Patienten mit exazerbierter Psoriasis pustulosa, bei denen es zeitgleich zu Ver?nderungen der Zungenschleimhaut entsprechend
dem Befund einer Exfoliatio areata linguae et mucosae oris kam. Die Histologie der Schleimhaut zeigte mit ausgepr?gter Akanthose,
Verbreiterung der Reteleisten, fokaler Parakeratose und neutrophilem Infiltrat Ver?nderungen, wie sie auch bei Psoriasis vulgaris
der Haut zu finden sind. Bei den vorgestellten Patienten kam es unter systemischer Therapie mit Retinoiden zum parallelen
Abheilen der Haut- und Schleimhautl?sionen. Die histopathologischen Befunde und der klinische Verlauf lassen an eine Lingua
geographica als orale Manifestation einer Psoriasis pustulosa denken.
Eingegangen am 22. Mai 1997 Angenommen am 5. September 1997 相似文献
49.
50.
Regional myocardial dysfunction: evaluation of patients with prior myocardial infarction with fast CT 总被引:1,自引:0,他引:1
Lipton MJ; Farmer DW; Killebrew EJ; Bouchard A; Dean PB; Ringertz HG; Higgins CB 《Radiology》1985,157(3):735-740
A prototype ultrafast cine computed tomographic (CT) scanner, designed specifically for cardiac imaging, was used to evaluate a preliminary series of patients with prior myocardial infarction (n = 21) and a control group without coronary artery disease (n = 5). Multilevel 50-msec CT scan exposures were obtained during peripheral intravenous bolus injections of contrast medium. A comparison was made between cine-CT scans and standard left ventriculographic images in assessing segmental left ventricular motion. Results indicate that cine CT, performed at sufficiently rapid speeds (20 scans per second) to allow useful analysis of regional ventricular wall motion, can provide adequate image quality. Analysis of 110 segments revealed a good correlation (90.9%) between the two techniques in characterizing normal from abnormal regional wall motion. Cine CT, based on this initial study, demonstrates considerable potential for evaluating not only cardiac chamber dimensions but also segmental wall dynamics. 相似文献