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  • 1
    Electronic Resource
    Electronic Resource
    Image quality and dose in spiral computed tomography (1996)
    Springer
    European radiology 6 (1996), S. 485-488 
    Details
    ISSN: 1432-1084
    Keywords: Computed tomography ; Helical technology ; Image quality ; Radiation exposure ; Dosimetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Image quality and dose produced by a spiral CT with various pitch values were investigated on the basis of test-object images and measurements of CT dose indexes. No major difference in image quality or dose was observed when comparing sequential and spiral mode acquisition with a pitch of one. Increase in pitch value produces a loss of contrast which leads to a loss of detectability. Nevertheless, in realistic protocls the image quality in the transverse plane remains acceptable up to pitch values of 1.3 – 1.6.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00182477
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Comparison between standard radiography and spiral CT with 3D reconstruction in the evaluation, classification and management of tibial plateau fractures (2000)
    Springer
    European radiology 10 (2000), S. 1227-1232 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Knee trauma ; 3D spiral CT ; Treatment plan ; Fracture classification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The aim of this study was to compare the diagnostic efficiency of plain film and spiral CT examinations with 3D reconstructions of 42 tibial plateau fractures and to assess the accuracy of these two techniques in the pre-operative surgical plan in 22 cases. Forty-two tibial plateau fractures were examined with plain film (anteroposterior, lateral, two obliques) and spiral CT with surface-shaded-display 3D reconstructions. The Swiss AO-ASIF classification system of bone fracture from Müller was used. In 22 cases the surgical plans and the sequence of reconstruction of the fragments were prospectively determined with both techniques, successively, and then correlated with the surgical reports and post-operative plain film. The fractures were underestimated with plain film in 18 of 42 cases (43 %). Due to the spiral CT 3D reconstructions, and precise pre-operative information, the surgical plans based on plain film were modified and adjusted in 13 cases among 22 (59 %). Spiral CT 3D reconstructions give a better and more accurate demonstration of the tibial plateau fracture and allows a more precise pre-operative surgical plan.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300000326
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Spiral CT aortography: an efficient technique for the diagnosis of traumatic aortic injury (1998)
    Springer
    European radiology 8 (1998), S. 828-833 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Thoracic aorta ; Trauma ; Aorta rupture ; Spiral CT ; Angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The objective of this study was to assess the efficiency of spiral CT (SCT) aortography for diagnosing acute aortic lesions in blunt thoracic trauma patients. Between October 1992 and June 1997, 487 SCT scans of the chest were performed on blunt thoracic trauma patients. To assess aortic injury, the following SCT criteria were considered: hemomediastinum, peri-aortic hematoma, irregular aspect of the aortic wall, aortic pseudodiverticulum, intimal flap and traumatic dissection. Aortic injury was diagnosed on 14 SCT examinations (2.9 %), five of the patients having had an additional digital aortography that confirmed the aortic trauma. Twelve subjects underwent surgical repair of the thoracic aorta, which in all but one case confirmed the aortic injury. Two patients died before surgery from severe brain lesions. The aortic blunt lesions were confirmed at autopsy. According to the follow-up of the other 473 patients, we are aware of no false-negative SCT examination. Our limited series shows a sensitivity of 100 % and specificity of 99.8 % of SCT aortography in the diagnosis of aortic injury. It is concluded that SCT aortagraphy is an accurate diagnostic method for the assessment of aortic injury in blunt thoracic trauma patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050480
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  • 4
    Electronic Resource
    Electronic Resource
    High-resolution ultrasound evaluation of internal jugular venous valves (1999)
    Springer
    European radiology 9 (1999), S. 1222-1226 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Internal jugular veins ; Venous valves ; Ultrasound evaluation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Although the presence of valves in the distal portion of the internal jugular veins has been widely described by anatomists and pathologists, their existence remains underscored in the medical literature. We set out to demonstrate their sonographic aspect and to evaluate their morphology, location and prevalence. Seventy-five cadavers were evaluated for the presence and aspect of such valves through neck dissections. Concurrent evaluation of the sonographic character of these structures was performed in another cohort of 75 adults. Valves of the distal portion of the internal jugular veins were found in 93 % of the cadaveric studies. Ultrasonography easily demonstrated the valve leaflets in 87 % of patients; all were observed in the distal portion of the internal jugular (IJ) veins. Sixty percent were bilateral with the majority of unilateral veins found on the right side. High-resolution ultrasonography easily demonstrates valves in the distal portion of the IJ veins which are present in the great majority of persons. Their evaluation may be of use in percutaneous procedures using this venous access.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050822
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  • 5
    Electronic Resource
    Electronic Resource
    Three-dimensional cholangio-spiral CT demonstration of a post-traumatic bile leak in a child (1999)
    Springer
    European radiology 9 (1999), S. 99-102 
    Details
    ISSN: 1432-1084
    Keywords: Key words: 3D spiral CT ; Trauma ; Cholangiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Bilioma is a rare complication of traumatic liver injury, and the precise site of bile leak is often difficult to demonstrate with a non-invasive technique. We report a case of post-traumatic bile leak in a 15-year-old girl in whom spiral CT after intravenous cholangiography allowed excellent preoperative demonstration of the extent of the liver rupture and an exact location of the bile leak. We think that spiral-CT cholangiography could be an accurate, non-invasive technique to investigate the biliary system in cases of paediatric liver trauma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050637
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  • 6
    Electronic Resource
    Electronic Resource
    Linear opacities on HRCT in bronchiolitis obliterans organising pneumonia (1999)
    Springer
    European radiology 9 (1999), S. 1813-1817 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Bronchiolitis obliterans organising pneumonia ; Cryptogenic organising pneumonia ; HRCT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The aim of this study was to report the high-resolution computed tomography (HRCT) appearances of linear opacities that may occur in isolation or in combination with other changes in bronchiolitis obliterans organising pneumonia (BOOP). Eleven patients with BOOP and linear opacities on HRCT were identified at three independent teaching hospitals. The HRCT images and clinical course of each patient were reviewed. Two distinct types of linear opacity were identified. The type-1 opacity extended in a radial manner along the line of the bronchi towards the pleura and was usually intimately related to bronchi. The type-2 opacity occurred in a sub-pleural location and bore no relationship to the bronchi. Both types occurred most commonly in the lower lobes, frequently were associated with multi-focal areas of consolidation and usually completely resolved with treatment. There was no associated bronchiectasis, irreversible volume loss or a reticular or honeycomb pattern. In 2 patients linear opacities were the sole abnormality on HRCT. Bronchiolitis obliterans organising pneumonia may occur in a pure “linear form” or HRCT may demonstrate linear opacities in addition to multi-focal consolidation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050928
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  • 7
    Electronic Resource
    Electronic Resource
    Radiological findings in nine AIDS patients with Rhodococcus equi pneumonia (1996)
    Springer
    European radiology 6 (1996), S. 826-830 
    Details
    ISSN: 1432-1084
    Keywords: AIDS ; Rhodococcus equi ; Mediastinal lymphadenopathy ; CT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Rhodococcus equi (R. equi) infections have been incidentally reported as a cause of pulmonary infection in severely immunocompromised hosts, including AIDS patients. Our purpose is to describe the radiological findings in nine AIDS patients with R. equi pneumonia assessed by bronchoalveolar lavage (BAL), biopsies, cultures of sputum, and hemocultures. All patients were examined by chest radiographs and contrast-medium-enhanced chest CT. Dense pulmonary consolidations with or without cavitations accounted for the most striking radiological patterns. Chest CT also revealed six mediastinal involvements, strongly mimicking a lymphoma. Two of them had multiple bilateral pulmonary nodular opacities. Pleural effusion was not identified. Although intensive therapies were administered, seven among nine patients died within few months. In an AIDS patient living in a rural area or exposed to horses and presenting these radiological patterns, the possibility of R. equi pneumonia should be considered in the differential diagnosis along with other infectious diseases or lymphomas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00240680
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  • 8
    Electronic Resource
    Electronic Resource
    Turf battles in radiology: how to avoid/how to fight/how to win (1999)
    Springer
    European radiology 9 (1999), S. 741-748 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Economics ; medical ; Editorials ; Radiology and radiologists ; departmental management ; Radiology and radiologists ; socioeconomic issues
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Turf battles have always existed in radiology although recently, we have observed an increase in their numbers and sometimes in their virulence. The main reasons for this increase include the relative plethora of physicians especially in industrialized areas, and the rapid progress and development of medical technology and minimally invasive techniques. These turf battles risk interfering with the overall medical costs of local health care systems as they will inevitably lead to an increase in the concentration of complex medical devices controlled by different specialties which, in turn, will lead to an increase in number of invasive and noninvasive, diagnostic and therapeutic examinations. The only way that radiologists can hope to maintain control of today's techniques will be if they are willing to offer qualitative expertise in their procedures with full clinical, academic and technological backing similar, or superior to that presented by our respective clinical and surgical colleagues. Furthermore,they should be fully involved in the decisional process and actual purchase of the technological equiment of their entire institution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050747
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  • 9
    Electronic Resource
    Electronic Resource
    Bronchiolitis obliterans organising pneumonia simulating bronchial carcinoma (1998)
    Springer
    European radiology 8 (1998), S. 1165-1169 
    Details
    ISSN: 1432-1084
    Keywords: Key words: BOOP ; COP ; Bronchial carcinoma ; Nodule ; Haemoptysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Idiopathic bronchiolitis obliterans organising pneumonia (BOOP) is an uncommon but well-recognised condition that usually presents radiologically as bilateral multifocal patchy areas of consolidation on the chest radiograph and on computed tomography (CT). Five cases are described in which the presenting feature was that of a solitary pulmonary nodule. Four of these nodules showed evidence of cavitation and three patients presented with haemoptysis. In all cases the appearances closely resembled bronchial carcinoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050527
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Abdominal actinomycosis associated with intrauterine device: CT features (1996)
    Springer
    European radiology 6 (1996), S. 670-673 
    Details
    ISSN: 1432-1084
    Keywords: Actinomycosis ; Intrauterine devices ; Peritonitis ; CT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Abdominal actinomycosis is a severe and progressive peritoneal infection, due to an anerobic gram-positive bacterium, Actinomyces israelii. The presence of a long-standing intrautrine device (IUD) is a well-known risk factor in young women. We report two cases of pelviperitoneal actinomycosis appearing in two young women with acute low abdominal pain. Abdominal CT demonstrated multiple solid or encapsulated peritoneal masses with marked contrast enhancement and infiltration of the adjacent mesentric fat. Laparoscopy confirmed the presence of intraperitoneal abscesses which contained Actinomyces israelii. High doses of amoxicillin and clavulanic acid (Augmentine) were given and following CT scan after 2 and 6 weeks showed a slow, but complete, resolution of the lesions. Although the radiologic presentation of actinomycosis is nonspecific, the diagnosis should be raised in the presence of pseudotumoral mesenteric infiltration, particularly in young women with an IUD. Abdominal CT is a useful method for diagnosis and for follow-up.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00187670
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    Paper (German National Licenses)
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