CTPAS

AcronymDefinition
CTPASChemical Technology Program Approval Service (American Chemical Society)
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References in periodicals archive ?
The use of a diagnostic algorithm that includes the Wells' criteria and a D-dimer concentration can exclude PE without CTPA in 20% to 30% of patients.
(6) A fixed cutoff D-dimer concentration of 500 ng/mL is commonly used despite an absolute reduction of 11.6% (95% confidence interval [CI], 10.5-12.9) in the need for CTPA using an age-adjusted D-dimer concentration threshold (age x 10 ng/mL for patients > 50 years).
The radiation dose delivered to breast tissue in CTPA has been shown to be many times higher than V/Q on average and though the radiation dose delivered to the uterus is slightly higher in V/Q than in CTPA, both have been shown to be very small and likely less significant in comparison to the breast dose [4].
A conundrum often encountered by clinicians is whether the chances of identifying non-PE pathology justify the use of CTPA over V/Q.
Of the 177 CTPAs performed, we selected 104 individuals who met the inclusion criteria.
Variables recorded included basic demographics, type and stage of cancer, status of cancer (i.e., active on chemotherapy, metastatic, cured, or relapsed), and findings on CTPA including documentation of extent of pulmonary artery occlusion by the thrombus.
In current practice, CTPA is often the first line of imaging.
retrospectively reviewed patients referred for CTPA at The Ottawa Hospital (TOH) with suspicion of acute PE [10].
CPR was performed after 3 min, during which time arterial blood was collected and CTPA was performed.
CTPA was performed again after ROSC in surviving animals [Figure 2]d and [Figure 2]h.
Several techniques are currently available for decreasing the contrast dose for CTPA. Scanning at a lower tube potential (i.e.