CT venography

CT venography

Spiral CT venography Imaging The use of a spiral CT device to evaluate blood flow in peripheral veins, and diagnose DVT, using 80% < contrast media than conventional venography. See CT.
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CT dose index (CTDI; mGy) and dose length product (DLP; mGycm) of DECT and CT venography are listed in Table 1.
The 180day CT venography demonstrated IVC lumen patency in all of the study animals.
CT venography (CTV) can provide a rapid and reliable diagnosis of CVT [6], as in Figure 7.
Spiral CT venography is also very helpful in diagnosing chest vein stenosis.8,9 Magnetic resonance angiography (MRA) may also be considered when contrast venography is contraindicated.
(14) CT venography can be useful in confirming a diagnosis of CVT and is comparable to magnetic resonance (MR) venography.
We report five cases of DIVC out of 7722 patients diagnosed by contrast-enhanced Spiral CT venography (CTV) and confirmed by Turbo three-dimensional (3D) timeof-flight contrast-enhanced MR venography (MRV) (3D contrast-enhanced MRV).
Multidetector CT venography of patients with blunt head trauma revealing skull fractures that stretch out to a dural venous sinus or jugular bulb identified DVST in 40.7% of cases, and of these, 55% were occlusive.
Addition of CT venography increases the gonadal radiation dose 500-fold in women and 2,000-fold in men compared to the dose from CT pulmonary angiography alone.
(14,30,31) In a recent series of 137 patients with LE DVT who underwent CT venography, the most common site was in a muscular calf vein.
(5) CT venography has recently been offered as another modality that can help in treatment planning by highlighting the location of an expansile petrous apex granuloma in relation to the jugular bulb and petrous carotid artery.
Neither CT venography nor MRI is recommended in patients with suspected first lower extremity DVT.