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- Agren, B, et al.
(författare)
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Radiography and bone scintigraphy in bone marrow transplant multiple myeloma patients
- 1997
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Ingår i: Acta radiologica (Stockholm, Sweden : 1987). - : SAGE Publications. - 0284-1851 .- 1600-0455. ; 38:1, s. 144-150
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: To compare conventional radiography and bone scintigraphy in relation to clinical outcome in bone marrow transplant multiple myeloma patients. Material and Methods: A total of 70 radiographies and 70 bone scintigraphies were compared in 35 patients. Results: The skull, the extremities, the iliac and pubic bones were better assessed with radiography. For new vertebral lesions and for lesions in the ribs and sternum, bone scintigraphy proved superior. For the sacrum, the methods were equal. When bone scintigraphy was used as a complement to radiography, 4% more pathological sites were found. No patient had both a normal radiography and a pathological bone scintigraphy, but 5 patients had both a normal bone scintigraphy and a pathological radiography. The results of the radiological examinations did not always correlate with the clinician's grading of the patient's disease. The radiological examinations had no prognostic value for the 7 patients examined on several occasions. Conclusion: The ability of conventional radiography and bone scintigraphy to disclose myeloma lesions varies, depending on location and size of the lesions. Radiography should remain the primary examination modality also for bone marrow transplant multiple myeloma patients. Bone scintigrapy can serve as a complement for investigating unexplained pain, e.g. caused by lesions in vertebrae or ribs.
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| 2. |
- Agren, B, et al.
(författare)
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MR imaging of multiple myeloma patients with bone-marrow transplants
- 1998
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Ingår i: Acta radiologica (Stockholm, Sweden : 1987). - : SAGE Publications. - 0284-1851 .- 1600-0455. ; 39:1, s. 36-42
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: to evaluate the role of MR imaging in the examination of multiple myeloma (MM) patients with bone-marrow transplants Material and Methods: A total of 40 MR examinations were made of 20 patients: 33 examinations of the spine and pelvis in 20/20 patients; and 7 examinations of the femora in 5/20 patients. the 40 examinations were evaluated and the results compared with those found at radiography. Altogether 13/20 patients were re-examined: 10 after 1 year (1 patient twice); and 3 after 2 years. Five sequences were tested, 3 of them first without and then with i.v. contrast enhancement Results: in 24/33 examinations, active MM lesions were shown by MR. in 16/33 examinations, MR showed greater spread and detectability than radiography. in the 5/20 femoral patients, 3 had a peripheral red bone-marrow extension in the femora. in the 13 re-examinations, the lesions had spread in 4 patients, were unchanged in 7, and had decreased in 2. the lesions were easier to detect with the turbo inversion recovery (TIR) technique and with fat saturation than with the conventional spin-echo sequences. Contrast enhancement made the lesions more conspicuous in 8/17 examinations Conclusion: MR has the potential to be a useful routine examination with T1-weighted and TIR sequences of selected areas, and without the use of contrast enhancement. However, further longitudinal studies are necessary in order to evaluate its possible predictive value
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| 3. |
- Danielsson, R, et al.
(författare)
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Comparison of planar and SPECT scintimammography with 99mTc-sestamibi in the diagnosis of breast carcinoma
- 1999
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Ingår i: Acta radiologica (Stockholm, Sweden : 1987). - : SAGE Publications. - 0284-1851 .- 1600-0455. ; 40:2, s. 176-180
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: To compare results of planar and SPECT breast imaging with 99mTc-MIBI in detecting primary breast cancer. Material and Methods: Twenty-six consecutive patients with 34 suspected breast lesions underwent both planar and SPECT scintimammography. Ten minutes after injection of 700 MBq 99mTc-MIBI, 2 prone lateral projections were obtained, followed by a supine anterior projection. Forty minutes after injection, a SPECT study was done. All lesions were operated upon and verified with histopathology. Results: A sensitivity of 85% and specificity of 88% of planar scintimammography in diagnosis of primary breast lesions were achieved. The corresponding values for SPECT were 61% and 64%. Conclusion: The diagnostic accuracy of planar scintimammography was not improved by using SPECT imaging.
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| 6. |
- Agren, B, et al.
(författare)
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Dynamic scintigraphy of bone and bone marrow in multiple myeloma patients with bone-marrow transplants
- 1997
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Ingår i: Acta radiologica (Stockholm, Sweden : 1987). - : SAGE Publications. - 0284-1851 .- 1600-0455. ; 38:44 Pt 1, s. 533-538
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: To determine whether dynamic registration at bone and bone-marrow scintigraphy produces additional information compared to subsequent static registrations of bone-marrow transplants in multiple myeloma patients. Material and Methods: In a prospective study, 8 dynamic bone and 6 dynamic bone-marrow scintigraphies were performed in 10 patients. The dynamic scintigraphies were compared with conventional radiography, MR images, and static scintigraphies of bone and bone marrow. Results: No additional information was revealed by the dynamic registration method; on the contrary, 4 of the 8 known lesions were not discerned at dynamic registration. An incidental observation was that the time-activity curves of both radiopharmaceuticals had a specific pattern. Conclusion: Dynamic registration at bone and bone-marrow scintigraphy was not useful for detecting disease in multiple myeloma lesions.
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| 23. |
- Yang, L, et al.
(författare)
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Energy-dependent valence photoelectron spectra of SF6. Ab initio calculations and measurements
- 1998
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Ingår i: JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA. - : ELSEVIER SCIENCE BV. - 0368-2048. ; 94:1-2, s. 163-179
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Ab initio calculations of branching ratios and cross-sections for inner- and outer-valence levels of SF6 have been carried out by means of the static exchange (STEX) approximation including full intrachannel interaction. The calculations cover an energy r
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