Case Author(s): J. Wallis , 5/11/95 . Rating: #D1, #Q4

Diagnosis: Pulmonary embolism

Brief history:

Shortness of breath. Normal chest radiograph.


Perfusion images

View main image(vq) in a separate image viewer

View second image(vq). Xe-133 ventilation images, one minute per frame with washout images in the lower row.

The chest radiograph was normal.

Full history/Diagnosis is available below

Diagnosis: Pulmonary embolism

Full history:

The patient presented with recent onset of shortness of breath and chest pain. There was no fever or cough to suggest an infectious process.


Multiple large defects are seen, including the apical-posterior and anterior segments of the left upper lobe, multiple left basilar defects, and a moderate defect at the right apex.

Ventilation scintigraphy was normal, as was the chest radiograph.


The findings easily meet the criteria for "high likelihood ratio for pulmonary embolism" in both the modified Biello and modified PIOPED schemes.

ACR Codes and Keywords:

References and General Discussion of Ventilation Perfusion Scintigraphy (Anatomic field:Lung, Mediastinum, and Pleura, Category:Organ specific)

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Case number: vq008

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