European Journal of Nuclear Medicine

, Volume 21, Issue 11, pp 1198–1205

The value of thallium and three-phase bone scans in the evaluation of bone and soft tissue sarcomas

  • Calin I. Caluser
  • Hussein M. Abdel-Dayem
  • Homer A. Macapinlac
  • Andrew Scott
  • John H. Healey
  • Andrew Huvos
  • Hovanes Kalaigian
  • Samuel D. J. Yeh
  • Steven M. Larson
Original Article

DOI: 10.1007/BF00182353

Cite this article as:
Caluser, C.I., Abdel-Dayem, H.M., Macapinlac, H.A. et al. Eur J Nucl Med (1994) 21: 1198. doi:10.1007/BF00182353

Abstract

Thirty-seven patients with newly diagnosed or treated sarcomas had 47 sets of sequential thallium scans (TS) followed by three-phase bone scan (TPBS) on the same day. The diagnosis in all patients was verified by biopsy (n=40) or long-term follow-up studies (n=7). The sensitivity, specificity, and accuracy of TS and TPBS in detecting sarcomatous lesions was calculated: TS sensitivity was 88%, specificity 69%, and accuracy 83%; blood flow (BF) and blood pool (BP) sensitivity was 91%, specificity 54%, and accuracy 81 %; delayed bone scan (DB) sensitivity was 88%, specificity 38%, and accuracy 74%. In 17 studies the flow and blood pool parts of the TPBS and TS demonstrated the soft tissue component of sarcomas, which would have been missed if only the delayed bone scan had been performed. The TS lesion to normal tissue ratio alone was not very helpful in differentiating sarcomas from benign conditions because some benign lesions are highly cellular and vascular while some malignant lesions, such as chondrosarcoma, have poor vascularity and a less cellular chondroid matrix. However, when the thallium ratio was correlated with similar ratios calculated from yhe BP image, it was found that if the TS lesion to normal tissue ratio exceeded the BP lesion to normal tissue ratio (12 patients), the specificity for detecting sarcomatous lesions was 100%. Nevertheless, the reverse was not true. The positive predictive value of this observation was 100% and the negative predictive value was 37%.

Key words

Thallium-201 chlorideBone scanSoft tissue sarcoma

Copyright information

© Springer-Verlag 1994

Authors and Affiliations

  • Calin I. Caluser
    • 1
  • Hussein M. Abdel-Dayem
    • 1
  • Homer A. Macapinlac
    • 1
  • Andrew Scott
    • 1
  • John H. Healey
    • 2
  • Andrew Huvos
    • 3
  • Hovanes Kalaigian
    • 1
  • Samuel D. J. Yeh
    • 1
  • Steven M. Larson
    • 1
  1. 1.Nuclear Medicine ServiceMemorial Sloan Kettering Cancer CenterNew YorkUSA
  2. 2.Orthopaedic Surgery ServiceMemorial Sloan Kettering Cancer CenterNew YorkUSA
  3. 3.Pathology DepartmentMemorial Sloan Kettering Cancer CenterNew YorkUSA
  4. 4.Nuclear Medicine ServiceSt. Vincent's Hospital and Medical Center of New YorkNew YorkUSA