Using Dual-Detector Helical CT Angiography to Detect Deep Venous Thrombosis in Patients with Suspicion of Pulmonary Embolism

Abstract

Combined CT venography with dual-slice scanning is an accurate method to diagnose deep venous thrombosis that may reveal additional imaging findings in some patients with possible pulmonary embolism.

Diagnosis of DVT

“…The methodology of a meta-analysis of CT scan diagnostic accuracy, 125 along with individual accuracy studies, [126][127][128][129][130][131][132][133][134][135][136][137][138][139][140][141][142][143] is summarized in Table S27 (Recommendations 3.2-3.6). Most of the studies were of patients with suspected PE rather than suspected DVT.…”

“…Only one compared CT scan venography with contrast venography; 143 the remainder compared CT scan venography to US. [126][127][128][129][130][131][132][133][134][135][136][137][138][139][140][141][142] The results of the meta-analysis 125 and fi ve primary studies that were not included in the meta-analysis (mostly because they were subsequently published) [126][127][128][129]133 are described in Tables S28 and S29, with the Summary of Findings in Table 6 . [144][145][146] S37 and Table 6 , the evidence is of low quality, with only an accuracy study and no management studies to determine the consequences of using MR direct thrombus imaging in practice.…”

Optimized image reconstruction for detection of deep venous thrombosis at multidetector-row CT venography

“…vein, muscle veins). Criteria for DVT were an intravascular filling defect or localized nonenhancement of a vascular segment [18]. The number of images for each reconstruction method was recorded.…”

“…This technique showed good results in comparison with sonography for DVT detection [10][11][12][13][14][15][16][17][18][19].…”

“…To date, a variety of different protocols for performing indirect CT venography have been described in the literature [9,11,12,[14][15][16][17][18][19][20][21][22]. Some authors consider sequential protocols as sufficient, while other authors favor spiral scanning protocols.…”