Single perfusion defect and pulmonary embolism: Angiographic correlation
- Hospital of Saint Raphael, New Haven, CT (USA)
One hundred and thirty-three ventilation-perfusion scans (V-P) with angiographic correlation were retrospectively reviewed to evaluate the frequency of pulmonary emboli (PE) in single perfusion defects (SPD), regardless of ventilation or radiographic findings. By angiography, 15 of 30 SPD cases had PE. Demographic data and clinical presentation were similar for PE and non-PE patients. However, 9 out of 15 patients with PE had recent surgery compared to none of the non-PE patients. SPD were seen in areas of ventilation and chest x-ray abnormalities in 12 of 15 PE and 11 of 19 non-PE cases. Size of the actual lesion was underestimated by scintigraphy in most cases. In 7 of 15 PE cases, the perfusion defect was larger than the corresponding ventilation abnormality. Most SPD were located at the bases. Twelve of 15 SPD in the PE group were at the posterior basilar segment. In the appropriate clinical setting, SPD carries at least a moderate probability for PE. When the clinical suspicion is high, a pulmonary angiography will be needed to confirm the diagnosis.
- OSTI ID:
- 6920549
- Journal Information:
- Journal of Nuclear Medicine; (USA), Journal Name: Journal of Nuclear Medicine; (USA) Vol. 31:3; ISSN 0161-5505; ISSN JNMEA
- Country of Publication:
- United States
- Language:
- English
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550602 -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ALBUMINS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOMEDICAL RADIOGRAPHY
BODY
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DISEASES
HOURS LIVING RADIOISOTOPES
IMAGE PROCESSING
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LUNGS
MEDICINE
NUCLEAR MEDICINE
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANS
PATIENTS
PERFUSED ORGANS
PROCESSING
PROTEINS
RADIOISOTOPES
RADIOLOGY
RESPIRATORY SYSTEM
RESPIRATORY SYSTEM DISEASES
TECHNETIUM 99
TECHNETIUM ISOTOPES
XENON ISOTOPES
YEARS LIVING RADIOISOTOPES