Publications by authors named "Marjan J Slob"
Purpose: We determined the incidence and effects of different screening intervals prior to a true positive recall on the tumour characteristics of screen-detected cancers (SDC) and interval cancers (ICs) at biennial screening mammography.
Methods: A consecutive series of 553020 subsequent screens was included, obtained in a Dutch screening region between January 2009 and July 2019. During 2-year follow-up, we obtained data on radiological procedures, pathology and surgical interventions of all recalled women.
Manual volume measurement of intracranial aneurysms from 3D rotational angiography varies on different threshold settings and, therefore, is operator-dependent. We developed and validated a method based on automatic gradient edge detection that is independent on threshold settings and provides an accurate and reproducible volume measurement. This method was compared with manual volume calculation in 13 aneurysm phantoms, and the results were significantly more accurate.
View Article and Find Full Text PDFObjectives: To compare packing, re-opening and retreatment of intracranial aneurysms treated with two types of coils with different wire thickness and different shapes.
Materials And Methods: Packing, defined as the ratio between volume of inserted coils and volume of aneurysm, was calculated for 235 aneurysms-120 treated with predominantly helical-shaped coils of 0.010-inch diameter wire (GDC 10) and 115 treated with predominantly complex shaped coils of 0.
We evaluated prospectively the relation between packing and reopening in coiled intracranial aneurysms. Packing, defined as the ratio between the volume of inserted coils and volume of the aneurysm expressed as percentage, was calculated for 82 intracranial aneurysms treated with detachable coils. Aneurysm volume was assessed from 3D angiography.
View Article and Find Full Text PDFCoil thickness and packing of cerebral aneurysms: a comparative study of two types of coils.
AJNR Am J Neuroradiol
April 2005
Background And Purpose: In coiling cerebral aneurysms, high packing prevents reopening over time. The purpose of this study was to compare packing of cerebral aneurysms treated with two types of coils with different wire thickness and different shapes.
Methods: Packing, defined as the ratio between the volume of inserted coils and the volume of an aneurysm, was calculated for 144 cerebral aneurysms treated in 130 patients.
Background And Purpose: Controversy exists on how to assess a patient's tolerance before permanent carotid artery occlusion. We sought to determine the positive predictive value of synchronous opacification of hemispheric cortical veins at angiography of the contralateral carotid or vertebral artery as a predictor of tolerance to permanent carotid artery occlusion without development of ischemic injury.
Methods: Seventy-six angiographic test occlusions were performed in 74 consecutive patients considered for therapeutic occlusion.
Background And Purpose: Some cerebral aneurysms that have been coiled reopen over time and additional treatment should be considered to reduce the risk of recurrent hemorrhage. Our purpose was to assess procedural complications and angiographic results of additional coiling in patients with previously coiled but reopened aneurysms and to evaluate protection against (re)bleeding.
Methods: We compared procedural complications of initial coiling of 488 aneurysms in 439 patients with those of 53 additional coiling procedures in 41 reopened aneurysms in 40 patients.
Background: We designed a diagnostic strategy, based on clinical probability and D-dimer concentration, to select patients who were unlikely to have pulmonary embolism (PE), before further diagnostic workup was performed. The utility and safety of this strategy were evaluated in a prospective management study.
Methods: Consecutive patients with suspected PE had D-dimer testing and clinical probability assessment with a clinical decision rule.