Role of MR venography in the evaluation of deep venous thrombosis

Catalano, Carlo; Pavone, Paolo; Laghi, Andrea; Scipioni, Anita; Fanelli, Fabrizio; Assael, Filippo; Grossi, Andrea; Venosi, Salvatore; Passariello, Roberto

doi:10.1080/02841859709172434

Cited by 33 publications

(4 citation statements)

References 26 publications

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“…150 However, access to this technique is limited and it has not been evaluated in pregnant women with suspected DVT. Although one study has assessed agreement between MR venography (timeof-fl ight technique) and US, 208 MRI has not been systematically evaluated in pregnant patients with suspected DVT.…”

Section: Mrimentioning

confidence: 99%

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Diagnosis of DVT

Bates

Jaeschke

Stevens

et al. 2012

Chest

565

192

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Section: Mrimentioning

confidence: 99%

“…Tables S31 and S32 summarize the methodology of a meta-analysis of 14 studies 144 and individual accuracy studies [145][146][147][148][149][150][151][152][153][154][155][156][157][158][159] of MR diagnostic accuracy. Most of the studies in the meta-analysis were of MR venography (n 5 13), but one study evaluated MR direct thrombus imaging.…”

Section: 1mentioning

confidence: 99%

Diagnosis of DVT

Bates

Jaeschke

Stevens

et al. 2012

Chest

565

192

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“…Lewin et al haben in einer Studie an Probanden und Patienten gezeigt, dass die zuverlässigsten Ergebnisse in der MR-Venographie erreicht werden, wenn man die einzelnen Schichten überlappen lässt und 15 ± 20 8 aus der sagittalen in die koronare Ebene kippt [29]. Auch Thrombosen der tiefen Hirnvenen können mit der 2D-TOF mit hoher Zuverlässigkeit nachgewiesen werden [30]. Die PC-MRA hat sich in der intrakraniellen Venographie bisher nicht durchsetzen können, obwohl neue Studien zeigen, dass die 3D-PC-MRA das venöse Gefäûsystem ebenso gut darstellt wie die 2D-TOF-MRA [31].…”

Section: Gefäûverschlussunclassified

MR-Angiographie: Technische Grundlagen und Anwendungen in der Diagnostik neurologischer Erkrankungen

Heiland

Hartmann²,

K³

2001

Rofo Fortschr Geb Rontgenstr Neuen Bildgeb Verfahr

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During the last decade, magnetic resonance angiography (MRA) has been incorporated into the routine evaluation of patients with suspected cerebrovascular disease. Although digital subtraction angiography (DSA) is still the gold standard in diagnostics of intracranial vascular disease, it has been replaced by MRA in numerous clinical applications. In this paper we first provide a review of the various MRA techniques. In the second part, the diagnostic value as well as advantages and disadvantages of the different techniques are assessed for various cerebrovascular diseases, such as vessel occlusion, stenosis, dissection, cerebral aneurysms, and spinal and cerebral arteriovenous malformations.

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“…Pelvic MR venography can be performed using fl ow-sensitive or time-of-fl ight sequences, thereby avoiding the use of gadolinium [63]. In comparison with conventional venography in non-pregnant patients, these techniques have a sensitivity of 100 % and a specifi city of 94 % [67]. A two-centre trial compared MR imaging without contrast enhancement in a time-of-fl ight technique for ultrasonography in 27 pregnant patients between the 23 rd and 39 th weeks of gestation [68].…”

Section: Magnetic Resonance Venographymentioning

confidence: 99%

Diagnosis of pregnancy-associated venous thromboembolism - position paper of the Working Group in Women’s Health of the Society of Thrombosis and Haemostasis (GTH)

Linnemann¹,

Scholz

Rott

et al. 2016

Vasa

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EpidemiologyVTE is a leading cause of maternal morbidity in the developed world and, in the case of PE, of mortality as well [1]. While the relative risk of VTE is greatly increased during pregnancy compared with that in non-pregnant women, the absolute risk remains low: estimates of the incidence of pregnancy-associated VTE have varied from 1:500 to 1:1500 pregnancies [2 -7]. The risk of VTE is approximately 5-fold greater in pregnant women than in non-pregnant women.Approximately 80 % of pregnancy-associated VTEs are isolated DVTs, and approximately 20 % are PEs or both DVTs and PEs [5]. Although a systematic review reported weighted event rates for DVT of 21.9 %, 33.7 % and 47.6 % for the fi rst, second and third trimesters, respectively [6], a recent study suggested that the risk might in fact increase exponentially over the duration of the pregnancy [7], with 12.4 % of VTEs diagnosed in the fi rst trimester, 15.3 % in the second trimester and 72.3 % in the third trimester. This detailed risk assessment for each gestational week demonstrated a 21-fold increased risk for the last two weeks before delivery [7]. Summary: Pregnancy and the postpartum period are associated with an increased risk of venous thromboembolism (VTE). Over the past decade, new diagnostic algorithms have been established, combining clinical probability, laboratory testing and imaging studies for the diagnosis of deep vein thrombosis (DVT) and pulmonary embolism (PE) in the non-pregnant population. However, there is no such generally accepted algorithm for the diagnosis of pregnancy-associated VTE. Studies establishing clinical prediction rules have excluded pregnant women, and prediction scores currently in use have not been prospectively validated in pregnancy or during the postpartum period. D-dimers physiologically increase throughout pregnancy and peak at delivery, so a negative D-dimer test result, based on the reference values of non-pregnant subjects, becomes unlikely in the second and third trimesters. Imaging studies therefore play a major role in confi rming suspected DVT or PE in pregnant women. Major concerns have been raised against radiologic imaging because of foetal radiation exposure, and doubts about the diagnostic value of ultrasound techniques in attempting to exclude isolated iliac vein thrombosis grow stronger as pregnancy progresses. As members of the Working Group in Women's Health of the Society of Thrombosis and Haemostasis (GTH), we summarise evidence from the available literature and aim to establish a more uniform strategy for diagnosing pregnancy-associated VTE. Review Diagnosis of pregnancy-associated

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Role of MR venography in the evaluation of deep venous thrombosis

Abstract: Our results indicate that MR can provide highly accurate images, similar to those of contrast venography, in a noninvasive fashion. It is particularly useful in the pelvic region where the limitations of other imaging modalities are more evident.

Cited by 33 publications

References 26 publications

Diagnosis of DVT

Diagnosis of DVT

MR-Angiographie: Technische Grundlagen und Anwendungen in der Diagnostik neurologischer Erkrankungen

Diagnosis of pregnancy-associated venous thromboembolism - position paper of the Working Group in Women’s Health of the Society of Thrombosis and Haemostasis (GTH)

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