Efficacy of 67 gallium ECT imaging in lymphoma, infection, and lung carcinoma: A comparison with planar imaging
Emission computed tomography (ECT) studies were performed on a GE 400 A/T camera and ADAC computers (system 3 and system 3300). Thirty-three sets of ECT and planar images were obtained in 20 patients over a six month period. Imaging was performed 48 hours after the intravenous administration of 5 mc of Gallium 67 citrate. No bowel preparation was employed. Comparison is made of the initial nuclear medicine report derived from planar and ECT imaging aided by clinical knowledge versus the consensus opinion of two nuclear medicine physicians reading the planar images along with minimal clinical information. The lymphoma series consists of 18 scans in 10 patients. There were 5 scans in which a false negative planar interpretation was changed to a true positive ECT interpretation. Sensitivity of planar imaging for lymphoma was 58% which rose to 100% with addition of ECT information. There were no false positives by either technique. There were 5 sets of scans in 5 lung carcinoma patients. Sensitivity of the planar images was 60% because of 2 false negative results. Sensitivity of the ECT technique was 100%. There were no false positives. The infection series consists of 10 scans in 5 patients. Sensitivity of ECT was 100%, sensitivity of planar was 66%. There was 1 false positive planar. For the total series the accuracy of planar imaging was 69% and the predictive value of a negative planar interpretation was 44%. Corresponding values for ECT imaging were 100%. The authors' experience demonstrates significant increase in sensitivity without loss of specificity resulting from the use of Emission Computed Tomography in both chest and abdomen in patients with lymphoma, infection, and lung cancer.
- Research Organization:
- Bay Pines VAMC, St. Petersburg, FL
- OSTI ID:
- 6843147
- Report Number(s):
- CONF-840619-
- Journal Information:
- J. Nucl. Med.; (United States), Vol. 25:5; Conference: 31. annual meeting of the Society of Nuclear Medicine, Los Angeles, CA, USA, 5 Jun 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABDOMEN
EMISSION COMPUTED TOMOGRAPHY
CARCINOMAS
DIAGNOSIS
CHEST
GALLIUM 67
DIAGNOSTIC USES
LUNGS
LYMPHOMAS
ANALOG COMPUTERS
CITRATES
DIGITAL COMPUTERS
GAMMA CAMERAS
IMAGE PROCESSING
IMAGES
INFECTIVITY
INTRAVENOUS INJECTION
PATIENTS
SENSITIVITY
BETA DECAY RADIOISOTOPES
BODY
BODY AREAS
CAMERAS
CARBOXYLIC ACID SALTS
COMPUTERIZED TOMOGRAPHY
COMPUTERS
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
DISEASES
ELECTRON CAPTURE RADIOISOTOPES
GALLIUM ISOTOPES
INJECTION
INTAKE
INTERMEDIATE MASS NUCLEI
ISOTOPES
NEOPLASMS
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PROCESSING
RADIOISOTOPES
RESPIRATORY SYSTEM
TOMOGRAPHY
USES
550602* - Medicine- External Radiation in Diagnostics- (1980-)
550601 - Medicine- Unsealed Radionuclides in Diagnostics