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  • 1
    Electronic Resource
    Electronic Resource
    CT staging of early rectal carcinoma (1987)
    Springer
    Abdominal imaging 12 (1987), S. 253-256 
    Details
    ISSN: 1432-0509
    Keywords: Carcinoma, rectum ; Rectum, computed tomography ; Neoplasms, computed tomography ; Neoplasms, staging ; Computed tomography, rectal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Of 43 rectal carcinomas, initially presumed to be modified Dukes' stage A or B-1, 42 were examined with computed tomography (CT) prior to endocavitary treatment or surgery in 40 cases. The CT correctly showed 28 patients to have early stages and incorrectly showed 2 to have perirectal extension. Three patients had anal neoplasms. The remaining 10 patients had disease stage B-2 or higher and CT was not good for staging them. A CT scan can fairly accurately stage rectal carcinomas stage A and B-l grouped together, and is doing better in predicting the prognosis than digital palpation when histologic sections show well or moderately well-differentiated adenocarcinoma of the rectum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01885154
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Radiology of the continent ileostomy reservoir: II. Findings in patients with late complications (1994)
    Springer
    Abdominal imaging 19 (1994), S. 124-131 
    Details
    ISSN: 1432-0509
    Keywords: Continent ileostomy reservoir ; Kock pouch ; Reservoirography ; Protocolectomy ; Ulcerative colitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract During an 8-year period, 238 barium double-contrast studies performed in 162 patients with continent ileostomy reservoirs who had signs and symptoms of late complications (malfunction of the valve, non-specific inflammation of the mucosa, stenoses, hernias, and fistulas) showed radiologic abnormalities. The aim of the present study is to depict the radiologic findings in patients with late complications of continent ileostomy reservoirs. With radiologic examination, the correct diagnosis of valve malfunction was made in 96% of patients with surgically proven valve defects. We were able to differentiate between various types of valve dysfunction and complications related to the fixation of the reservoir to the abdominal wall. Inflammatory mucosal changes and fistulas of the reservoir and the afferent ileal segment were depicted with a high degree of accuracy. Barium double-contrast radiologic examination proved to be very valuable in the work-up of patients with dysfunction of continent ileostomy reservoirs. The method was of particular value in assessing the cause of valve dysfunction and in the appraisal of the afferent ileal segment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00203485
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Radiology of the continent ileostomy reservoir: I. Method of examination and normal findings (1994)
    Springer
    Abdominal imaging 19 (1994), S. 116-123 
    Details
    ISSN: 1432-0509
    Keywords: Continent ileostomy reservoir ; Kock pouch ; Reservoirography ; Proctocolectomy ; Ulcerative colitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of the present study is to describe the radiologic methods used to study continent ileostomy reservoirs and to depict the normal radiologic features and variations identified by these procedures. During an 8-year period, 408 double-contrast studies were performed in 261 patients. The present study comprises 170 examinations in 99 patients with normal findings. A high-density barium contrast medium and air were used. Modest variation in the size and shape of the reservoirs was observed. The mucosal pattern of the reservoirs resembled that of the ileum but the folds were slightly wider. The continence-providing valves were 3–5 cm long and had a diameter of 2.5–4.0 cm. The diameter of the afferent ileal segments was usually slightly larger than that of more proximal ileal segments, with an upper limit of approximately 4 cm. The efferent ileal segments generally had a straight course without widening or outpouches. Retrograde barium double-contrast examination is a satisfactory method for the evaluation of continent ileostomy reservoirs. Here we define the range of normal variations of such reservoirs as seen on retrograde double-contrast radiologic examinations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00203484
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Cost-effectiveness of colour duplex sonography compared with angiography of the pelvis and lower limb (1996)
    Springer
    European radiology 6 (1996), S. 481-484 
    Details
    ISSN: 1432-1084
    Keywords: Angiography ; Cost-effectiveness ; Doppler ; Efficiency ; Peripheral vascular disease ; Ultrasound
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The present investigation was performed to assess the clinical consequences, utility and efficacy of colour duplex sonography (CDS) compared with angiography as a preoperative examination in aorta, pelvis and lower limb, and thus to estimate the cost-effectiveness of CDS. CDS was additionally performed in 53 consecutive patients referred for preoperative angiography of the lower limb. The results for 49 patients were reviewed and compared to assess the technique's clinical utility. The costs of the two methods and the consequences of inappropriate treatment were assessed. In 15 patients inadequate diagnoses were obtained at CDS. If surgery had been performed solely on the basis of the ultrasonographic diagnosis, repeat surgery would have been necessary in 9 patients. In a further 3 patients necessary surgery would not have been performed. Two patients would have been overtreated (unnecessary surgery instead of percutaneous transluminal balloon angioplasty). To correct the initial incorrect diagnosis the estimated yearly cost would be approximately 1.3 million Swedish crowns. In addition, complications and discomfort could be anticipated for the patients. Because of its low sensitivity CDS ist not cost-effective as a preoperative investigation of arteries of the pelvis and lower limb.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00182475
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  • 5
    Electronic Resource
    Electronic Resource
    Clinical utility of chest roentgenograms (1999)
    Springer
    European radiology 9 (1999), S. 721-723 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Chest radiography ; Outcome analysis ; Clinical value ; General practice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Because chest roentgenograms are the most common radiological procedure, they represent a considerable use of resources. Because the usefulness of chest radiography is frequently disputed, it is mandatory to investigate whether or not this use of resources can be defended in terms of clinical utility. The current study was performed as an outcome analysis to assess the clinical utility of chest radiography for monitoring patients in general practice (GP). One year of chest radiography referrals from a municipality practice, comprising a total of 55 patients, were prospectively studied. Prior to the referrals, questionnaires were filled in with indications and expected results. After the examination, the radiological results were assessed regarding clinical utility. All 55 patients were carefully monitored by the same GP. The most frequent reason for referral was infectious disease. Only in 5 patients was the radiology report without value. In the 29 patients with a negative report, it was considered of value. In 7 of these 29 patients the ongoing treatment was altered. The subjective value of the radiology reports were considered to be high. The clinical utility was good, both when receiving positive and negative answers. Of special interest was the negative answers as 7 patients actually changed treatment. The clinical utility was considered high enough to justify the costs. Good access to radiology for GPs is both cost-saving and cost-effective.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050741
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  • 6
    Electronic Resource
    Electronic Resource
    In vitro experiment and initial clinical experience in angioplasty, in vascular occlusive disease with a new pulsed dye-laser system (1992)
    Springer
    European radiology 2 (1992), S. 439-445 
    Details
    ISSN: 1432-1084
    Keywords: Laser, flashlamp pumped dye ; Laser, feedback system ; Laser angioplasty, technique ; Laser angioplasty, arteries
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The feasibility of using a pulsed dye-laser in angioplasty for detection and disintegration of calcified plaques was studied in vitro. The laser (495 nm wave-length; 2 μs pulse duration) was used as the exciting source for laser-induced-fluorescence (LIF) signals. Spectral data in the 520 to 800 nm region of normal artery wall, calcified plaques, and fibro-fatty plaques were analysed with an optical multichannel analyser. Good signal-to-noise ratio and different spectra for different specimens were obtained within only 2 μs. Fluorescence analysis can be performed in less than 300 ns and therefore the laser can be controlled before plasma threshold is reached. This can lead to a clinical by useful feedback system in an “intelligent” laser, which can selectively ablate atherosclerotic tissue. In a parallel step we investigated a pulsed dye-laser device (504 nm; 1.2 μs) for in vivo recanalisation of arteries in ischaemic lower limbs. A specially designed 9F or 7F guide wire directed multifibre catheter was used for treatment of 17 patients. The recanalisation technical success was 8/8 (4 occlusions/5 stenoses) in the iliac arteries (IA) and 8/9 (8 occlusions/4 stenoses) in the superficial femoral (SFA) and popliteal arteries (PA). All occlusion lengths were below 10 cm. Three early re-occlusions occured, caused by very bad run-off. There was one clinically insignificant SFA perforation and one groin haematoma. Additional techniques (balloon dilatation, stenting, lysis) were considered necessary in 15/17 patients. Mean ankle-arm-index increased significantly in the 1 week examination in rest from 0.61 to 0.76 (P 〈 0.05) in IA and from 0.65 to 0.93 (P 〈 0.01) in SFA. Pulsed dye-laser angioplasty promises to be an effective method for plaque ablation/debulking.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00176350
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  • 7
    Electronic Resource
    Electronic Resource
    Economic consequences of patients arriving late or not keeping appointments: evaluation in and comparison between two departments of radiology (1994)
    Springer
    European radiology 4 (1994), S. 172-174 
    Details
    ISSN: 1432-1084
    Keywords: Cost-effectiveness ; Economics, medical ; Patient scheduling and administration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The economic impact of patients arriving late or not keeping appointments was evaluated. All such patients were recorded throughout three periods at Haukeland Hospital (Norway) and one period at East Hospital (Sweden). The loss in income was assessed as being a minimum of 13 million Swedish kronor per year. We recommend that continuous quality assurance programmes for management be performed at every ra radiology department.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00231205
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Where is the doctor? Waiting for radiologists (1994)
    Springer
    European radiology 4 (1994), S. 63-64 
    Details
    ISSN: 1432-1084
    Keywords: Health economy ; Resources allocation ; Utilisation of radiology personnel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Nurses' aids recorded the time spent waiting for radiologists to arrive for scheduled work during eight working days. The reimbursement lost and the wages wasted would fund two additional physicians, enabling an even use of departmental resources.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00177390
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  • 9
    Electronic Resource
    Electronic Resource
    Doxorubicin treatment of rabbit renal VX-2 carcinoma: nephrotoxicity, serum parameters and weight (1995)
    Springer
    Urological research 23 (1995), S. 169-173 
    Details
    ISSN: 1434-0879
    Keywords: Kidney neoplasm ; Combined modality therapy ; Doxorubicin treatment ; Nephrectomy ; Creatinine ; Electrolytes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Serum electrolytes, creatinine, urea, protein, albumin, bilirubin and glucose were examined every 4 days until time of death in rabbits with VX-2 carcinoma implanted in one kidney. The rabbits were treated with doxorubicin, nephrectomy or combinations thereof and observed for up to 1 year. Rabbits treated with doxorubicin only showed a slight creatinine rise initially, but over time creatinine reached almost the same concentration as that in nephrectomized rabbits receiving equivalent doses of doxorubicin. Creatinine concentrations increased significantly above the normal range following nephrectomy combined with doxorubicin. Doxorubicin nephrotoxicity in rabbits occurs at lower doses than previously reported. In all rabbits the parameters except creatinine remained stable within the established normal ranges, except for the last 4 days before time of death in the animals with metastatic disease. Weight loss was the best parameter for making a prognosis for an individual rabbit, since peak weight was noted 16–20 days before death. In experimental work with VX-2 carcinoma, weight is thus the most important indicator of the time at which rabbits not responding to treatment can be put to death to avoid unnecessary suffering before the end of the experiment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00389569
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  • 10
    Electronic Resource
    Electronic Resource
    Relationship between renal capsular artery feeding and size of VX-2 carcinoma implant in the rabbit kidney (1994)
    Springer
    Urological research 22 (1994), S. 231-234 
    Details
    ISSN: 1434-0879
    Keywords: Tumor blood supply ; Renal capsular artery ; Kidney neoplasm ; VX-2 carcinoma ; Angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract When regional intraarterial infusion is applied in the treatment of malignant tumors it is essential to reach the tumor via all its major feeder vessels. In this study VX-2 carcinoma was implanted into the lower pole of the left kidney in 24 rabbits to investigate whether the renal capsular artery takes part in tumor feeding. The rabbits were divided into four groups that were followed for 8, 10, 12 or 14 days after tumor implantation. At that time the renal artery was ligated close to the kidney and subsequently silicone rubber or barium sulfate/gelatin suspension was injected into the capsular artery. The tissue was cleared, and the tumor carefully removed and examined microscopically for traces of silicone rubber. When barium sulfate had been injected, the kidney was examined radiographically in order to detect possible presence of contrast medium in the tumor. This study revealed no vascular supply to the implanted VX-2 carcinoma from the capsular artery when the tumor was confined intracapsularly, i.e., up to 12 days after tumor implantation in untreated rabbits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00541898
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