CT findings in subarachnoidal haemorrhage (SAH)

Berlit, Peter; Bühler, B.; Tornow, K.

doi:10.1055/s-2008-1053917

Cited by 4 publications

(4 citation statements)

References 1 publication

(2 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the retrieval of this subset of patients was done retrospectively and independent from clinical or other radiological factors, we believe this type of retrieval has not introduced any bias. The proportion of patients with ICH from a ruptured aneurysm in our studies is comparable to proportions in other studies, which supports the external validity of our study [7, 8]. …”

Section: Discussionsupporting

confidence: 91%

Aneurysmal and clinical characteristics as risk factors for intracerebral haematoma from aneurysmal rupture

Liu

Rinkel

2010

J Neurol

View full text Add to dashboard Cite

Intracerebral haematoma (ICH) occurs in one-third of patients with aneurysmal subarachnoid haemorrhage (SAH) and is associated with poor prognosis. Identification of risk factors for ICH from aneurysmal rupture may help in balancing risks of treatment of unruptured aneurysms. We assessed potential clinical and aneurysmal risk factors for ICH from aneurysmal rupture. In all 310 SAH patients admitted to our service between 2005 and 2007, we compared clinical risk factors (gender, age, smoking, hypertension, history of SAH and family history) of patients with and without an ICH. From the latest admitted, 50 patients with and 50 without ICH, we compared the location, shape and direction of blood flow of the aneurysms on CT-angiography. Relative risks (RRs) of ICH were 1.2 (95% confidence interval, CI):0.7–1.8) for males, 1.0 (95%CI:0.7–1.4) for age ≥55 year, 1.0 (95%CI:0.6–1.6) for smoking, 0.9 (95%CI:0.5–1.5) for hypertension, 0.6 (95%CI:0.1–3.8) for history of SAH and 0.5 (95%CI:0.2–1.3) for family history of SAH. RRs of ICH were 1.8 (95%CI:1.2–2.5) for MCA aneurysms, 0.5 (95%CI:0.3–1.0) for ICA aneurysms, 0.4 (95%CI:0.1–1.3) for posterior circulation aneurysms, and 0.7 (95%CI:0.3–1.3) for multilobed aneurysms. The RRs of other aneurysmal characteristics varied between 0.9 and 1.2. Patients with MCA aneurysms are at a higher risk of developing ICH. The other aneurysmal or clinical factors have no or only minor influence on the risk of ICH after rupture and are, therefore, not helpful in deciding on treatment of unruptured aneurysms.

show abstract

Section: Discussionsupporting

confidence: 91%

Aneurysmal and clinical characteristics as risk factors for intracerebral haematoma from aneurysmal rupture

Liu

Rinkel

2010

J Neurol

View full text Add to dashboard Cite

show abstract

“…This is a significantly higher success rate than previously thought (Berlit et al, 1988;van der Jagt et al, 1999). It could be partly attributed to the fact that the CT scan images used were taken by newer generation CT scanners than the ones previously reported, but was also achieved by systematically examining all the CT scan images of each case, carefully analyzing each radioanatomical feature present and combining all the available clues of each CT scan.…”

Section: Discussioncontrasting

confidence: 38%

“…E-mail: martryfon1@yahoo.com the acute haemorrhage, this is not always possible. Previous work on identification of the source of bleed using CT scans revealed good success rates only in the presence of intraparenchymal cerebral haematomas or anterior distribution of blood (Berlit et al, 1988;van der Jagt et al, 1999). This study was carried out to assess whether a combination of a variety of radioanatomical features on noncontrast enhanced CT scans can successfully predict the location of the ruptured aneurysm in all patterns of subarachnoid haemorrhage, which would be particularly useful in the management of cases of multiple intracranial aneurysms.…”

Section: Introductionmentioning

confidence: 95%

The value of radio‐anatomical features on non‐contrast CT scans in localizing the source in aneurysmal subarachnoid haemorrhage

et al. 2007

View full text Add to dashboard Cite

Identification of the source of subarachnoid haemorrhage (SAH) can be a challenge in the presence of multiple aneurysms. This study was carried out to assess whether radioanatomical features on noncontrast enhanced computerised tomography (CT) scans may be of value in localizing ruptured intracranial aneurysms. The diagnostic CT scans of 56 consecutive patients, investigated for SAH with cerebral angiography, over a period of six months were available for review. Various radioanatomical features were assessed: (1) pattern of subarachnoid blood (e.g. predominant site and location near major vessel bifurcation), (2) presence of intraparenchymal haematoma, (3) presence of aneurysm contour and (4) hydrocephalus. On the basis of the findings an estimation of the anatomical location of the source of bleeding was made and then compared with the angiogram findings to which the reviewer was blinded. The location of the aneurysm was correctly identified in 89.5% of cases. Careful analysis of the pattern of bleeding was essential for the successful localization of the aneurysm in all these cases. The presence of an aneurysm contour was also associated with correct identification of the source of bleeding (chi(2) = 6.067, P = 0.02). Our findings suggest that radioanatomical features on CT scans in SAH can be a valuable aid in the correct identification of the location of the ruptured aneurysm. This would be of particular significance in the presence of multiple intracranial aneurysms.

show abstract

“…Subarachnoid haemorrhage is demonstrated as high attenuation within the subarachnoid spaces of the basal cisterns, sulci and over the convexities of the brain [12]. The appearances in case 1 were due to contrast disrupting the blood-brain barrier and not subarachnoid haemorrhage.…”

Section: Discussionmentioning

confidence: 97%