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  • Dual-isotope single-photon emission tomography  (1)
  • Gastroscope  (1)
  • Key words: macronodular tuberculoma  (1)
  • 1
    ISSN: 1619-7089
    Keywords: Dual-isotope single-photon emission tomography ; Triple-energy window method ; Iodine-123 BMIPP ; Thallium-201 ; Coronary artery disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To improve the image quality in simultaneous dual-isotope single-photon emission tomography (SPET) with iodine-123 labelled 15-(p-iodophenyl)-3-methylpentadecanoic acid (BMIPP) and thallium-201, we applied the triple-energy window method JEW) for correction of the cross-talk and scatter artifact. Seventy-one patients with coronary artery disease were included.201T1 cross-talk into the123I acquisition window (group 1,n = 30) and123I cross-talk into the201Tl window (group 2,n = 41) were studied. In group 1,123I images were first obtained (single-isotope images), followed by201Tl injection and SPET acquisition using dual-isotope windows (dual-isotope images). In group 2, the order was reversed. The dual-isotope SPET images with and without TEW were compared with the single-isotope images. Qualitative evaluation was performed by scoring the segmental defect pattern. Detectability of the mismatched fatty acid metabolism on dual-isotope SPET was evaluated by receiver operating characteristic (ROC) curve analysis. Segmental defect pattern agreement between dual and corrected single images was significantly improved by TEW correction (P〈0.01). The agreement was particularly improved in segments with absence of uptake. There was no significant difference between TEW-corrected dual-isotope SPET and corresponding single-isotope SPET with regard to either % defect count or background activity. Mismatched fatty acid metabolism depicted by dual-isotope SPET predicted abnormal wall motion more accurately with TEW than without TEW. With TEW, a practical method for scatter and cross-talk correction in clinical settings, simultaneous dual123I-BMIPP/201Tl SPET is feasible for the assessment of myocardial perfusion/metabolism mismatch.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1435-5922
    Keywords: Key words: macronodular tuberculoma ; multi-organs ; CT ; MR imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract: The case of a 21-year-old woman presenting with macronodular multi-organs tuberculoma is reported. She was examined for pulmonary tuberculosis on a chest X-ray film in January, 1995, and admitted with a cough, anorexia, and abdominal pain in July, 1996. Computed tomography revealed multiple calcified nodules with peripheral hypodense areas in the brain, and calcified hypodense masses in the liver and spleen. Magnetic resonance (MR) imaging showed hypointense masses in the liver and spleen on T1-weighted spin echo images and a hypointense mass with a hyperintense area on T2-weighted spin echo images. On contrast-enhanced dynamic MR images, the liver and spleen masses were unenhanced and hypointense with slight rim enhancement. T2-weighted spin echo images showed a round hypointense nodule in the right kidney and hydronephrosis and enlargement in the left kidney. Antituber-culous treatment was started with a gradual improvement in her signs and symptoms. Her temperature became normal. However, she was systemically treated with antituberculous chemotherapy 10 months later, her condition worsened again. She died from increased intracranial pressure in August, 1997.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1435-604X
    Keywords: Diospyrobezoar ; Gastroscope ; Laser Ignited Mini-explosive head
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Physics , Technology
    Notes: Abstract This paper reports the successful experimental studies of a laser detonating a mini-explosive head to break stones in vitro and in vivo. This technique has been used clinically with gastric bezoars since January 1988. All 31 patients were completely cured without complications. The relationship between gastric bezoars and ulcers and the treatment technique are also discussed in this paper. Diospyrobezoar is one of the common bezoars in the persimmon producing regions. This disease has been reported in many countries including our own, but until now there has been no effective treatment for large gastric bezoars except by surgery. To develop a better treatment for this problem the laser ignited mini-explosion technique to break large bezoars in vitro and in vivo was begun in October 1986 and first successfully applied clinically in January 1988.
    Type of Medium: Electronic Resource
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