| 1. |
- Azavedo, E, et al.
(författare)
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Imaging breasts with silicone implants
- 1999
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Ingår i: European radiology. - : Springer Science and Business Media LLC. - 0938-7994 .- 1432-1084. ; 9:2, s. 349-355
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Tidskriftsartikel (refereegranskat)
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| 5. |
- Ekberg, Olle, et al.
(författare)
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Radiologic evaluation of the dysphagic patient
- 1997
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Ingår i: European Radiology. - : Springer Science and Business Media LLC. - 0938-7994 .- 1432-1084. ; 7:8, s. 1285-1295
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Forskningsöversikt (refereegranskat)abstract
- Radiologic evaluation of patients with dysphagia relies on a meticulous and standardized technique. For assessment of function video recording is mandatory. A systematic approach for the description of function and dysfunction is necessary. The following describes such an approach focused on an easy and reproducible technique and a comprehensive description of radiologic events and morphology.
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| 8. |
- Kheddache, Susanne, 1949, et al.
(författare)
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Storage phosphor and film-screen mammography: performance with different mammographic techniques
- 1999
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Ingår i: European Radiology. - 0938-7994 .- 1432-1084. ; 9:4, s. 591-597
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to compare the image quality of storage phosphor plates with that in screen-film radiograms in mammography. Two anode/filter combinations were also compared ± Mo/ Mo and W/Rh. Storage phosphor plates, generation IIIN (Fuji, Tokyo, Japan) and a conventional screenfilm system (Kodak, Rochester, N.Y.) were evaluated using two mammographic units. One unit had a 0.6-mm focal spot, an anode/filter combination of Mo/Mo and no grid (A-Mo); the other had a 0.3-mm focal spot, a grid, and two possible combinations of anode/filter Mo/Mo (B-Mo) and W/Rh (B-W). Simulated tumours and microcalcifications were randomly positioned in an anthropomorphic breast phantom (RMI model 165, no. 210±009, Radiation Measurements Inc., Middleton, Wisconsin). The image quality was evaluated using a modified version of receiver operating characteristics analysis. Five observers evaluated 300 films and 300 hard copy images each. Radiation doses were also determined. The image Quality of the conventional screen-film images was significantly better than that for the storage phosphor plate mammograms. The B-Mo system rated best, for the detection of both tumours and microcalcifications, although it was not significantly different from the B-W system. Systems B-Mo and B-W rated significantly better than the A-Mo system for both image receptors studied. The mean absorbed dose was twice as high for the B-Mo system as for the A-Mo and B-W systems for both conventional and digital technique. The mammograms produced with the screen-film combination gave a significantly better detectability than the storage phosphor plates used in this study. Substantial dose reduction could be achieved using an anode/filter combination of W/Rh instead of Mo/Mo with no significant loss of information in the images.
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| 13. |
- Smedby, Örjan, et al.
(författare)
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Magnetic resonance angiography in the resectability assessment of suspected pancreatic tumours
- 1997
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Ingår i: European Radiology. - 0938-7994 .- 1432-1084. ; 7:5, s. 649-653
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this prospective study was to evaluate MRI, including MR angiography (MRA), in the preoperative assessment of the resectability of suspected malignancy of the pancreas. A total of 17 patients with suspected pancreatic carcinoma and planned surgery were investigated with conventional angiography, ultrasonography with Doppler technique, MRI and MRA. The MRA protocol included both 2D inflow angiography and 3D phase-contrast angiography. Surgery was carried out in 13 patients. The image quality of MRA was judged satisfactory in all cases. The findings with respect to vascular involvement agreed between the radiological methods in all but 3 cases. When the findings were correlated with the final diagnosis, one false-negative case was found for each of the three methods. The results suggest that MRI with MRA, including both the phase-contrast and inflow techniques, has a similar diagnostic value to that of conventional angiography and ultrasonography in the preoperative assessment of the portal venous system in patients with pancreatic carcinoma. Further studies are needed to establish the optimal diagnostic procedure.
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| 14. |
- Vitak, B, et al.
(författare)
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Tumour characteristics and survival in patients with invasive interval breast cancer classified according to mammographic findings at the latest screening : a comparison of true interval and missed interval cancers
- 1999
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Ingår i: European Radiology. - : Springer Science and Business Media LLC. - 0938-7994 .- 1432-1084. ; 9:3, s. 460-469
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to investigate whether different mammographic categories of interval cancer classified according to findings at the latest screening are associated with different distributions of prognostic factors or with different survival rates. The series consisted of all patients with invasive interval cancer detected from May 1978 to August 1995 (n = 544). The tumours were evaluated with regard to age, radiological category, interval between the latest screen and diagnosis and tumour characteristics at the time of diagnosis. We investigated possible relationships between the survival rate of patients with interval cancer and the interval between the latest screen and diagnosis, tumour characteristics and radiological category of the interval tumours. The study focused on comparison of patients with true interval and missed interval cancer. Women with mammographically occult tumours were younger than those in the other radiological categories. Comparisons of true interval cancers with overlooked or misinterpreted tumours showed equal distributions of age, tumour size, TNM stage and lymph node status. The overlooked or misinterpreted tumours showed significantly higher proportions of grade-I tumours (22 vs 11 %), tumours with low S-phase fraction (SPF; 44 vs 24 %) and oestrogen receptor (ER) positive tumours (72 vs 57 %). However, analyses of survival rates disclosed no clear differences between the two radiological categories. Radiological category and interval between the latest screen and diagnosis were not genuine predictors of the prognosis in patients with invasive interval breast cancer. No certain prognostic difference existed between true interval cancers and overlooked or misinterpreted interval breast cancers, despite higher proportions of grade-I tumours, ER positive tumours and tumours with low SPF in the latter group.
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