Adquacy of CT Pulmonary Angiogram for Diagnosis of Pulmonary Embolism

Aim: Assessment of contrast enhancement adequacy in CT pulmonary angiograms (CTPA) to ensure sufficient diagnosis. Methodology: This study was conducted in Radiology Department, Rehman Medical Institute, Peshawar. Sample size was 100 cases were selected with suspicion of pulmonary embolism that underwent CTPA. Study duration was 01-03-2019 to 30-06-2019. Results: First audit: 60% cases were females and 40% were males. 38 cases were of age 41-60 years. In 12% cases, the enhancement of pulmonary trunk was below 211 HU thus unsatisfactory scans. This showed 5% deviation from the standard. In 15 cases, there is acute pulmonary embolism. Second audit: 58% cases were females and 42% were males. In 3% cases, the enhancement of pulmonary trunk was below 211 HU thus unsatisfactory scans. For set standard, the target was achieved. In 22% cases, there is acute pulmonary embolism. Conclusion: Audit on CTPA adequacy showed that there is improvement of inadequate scans from 12% to 3% and our scans fulfilled the criteria as recommended.