Timotheus Theodorus Cornelis Overtoom

Timotheus Theodorus Cornelis Overtoom
St. Antonius Ziekenhuis · Department of Radiology

Drs.

About

81
Publications
4,733
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Introduction
Timotheus Theodorus Cornelis Overtoom worked at the Department of Radiology, St. Antonius Ziekenhuis. Timotheus does research in Neuroradiology, Interventional radiology and Urology. His current project is 'Treatment of UPJ obstruction with a spacer balloon. '.

Publications

Publications (81)
Article
Full-text available
After creating a urinary diversion according to Bricker, leakage and stenosis of the ileo-ureteral anastomosis are recognized as postoperative complications. In the presented case description both complications are discussed, together with a possible solution using a recently developed double-J stent with an integrated balloon. Keywords urinary div...
Article
Full-text available
After creating a urinary diversion according to Bricker, leakage and stenosis of the ileo-ureteral anastomosis are recognized as postoperative complications. In the presented case description both complications are discussed, together with a possible solution using a recently developed double-J stent with an integrated balloon. Keywords urinary div...
Article
Full-text available
Samenvatting Bij de aanleg van een urinedeviatie volgens Bricker komt zowel lekkage als stenosering van de anasto-mose voor als complicatie in de postoperatieve fase. In deze casus komen beide problemen aan bod en wordt een endo-ureterale oplossing beschreven waarbij een nieuw soort JJ-katheter met geïntegreerde ballon wordt gebruikt. Trefwoorden u...
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thema J a a r g a n g 2 1-n u m m e r 3-2 0 1 6 23 Interventieradiologische oplossingen bij urostomata voor perforaties, urinomen en stricturen met behulp van een nieuwe ballonkatheter gebruikt als 'kidney blocker' en 'spacer balloon' Casus 1 Verslag van een patiënte met een lekkage bij een redo urinestoma stuk ileum op de voormalige anastomose (Wa...
Article
Objective To investigate the accuracy, procedure time, fluoroscopy time, and dose area product (DAP) of needle placement during percutaneous vertebroplasty (PVP) using cone-beam computed tomography (CBCT) guidance versus fluoroscopy. Materials and Methods On 4 spine phantoms with 11 vertebrae (Th7–L5), 4 interventional radiologists (2 experience...
Article
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Cardiac catheterisation and percutaneous coronary interventions (PCI) are increasingly performed via the radial artery. Compared with the femoral approach there are several advantages. For example, patients can be mobilised more rapidly [1, 2]. Also complications such as access site bleeding occur less frequently and are often less severe compared...
Article
Introduction Déterminer le traitement chirurgical optimal, endartériectomie fémorale superficielle semi-fermée (EFSSF) ou pontage sus-articulaire, pour les lésions fémorales superficielles classées C et D par le Transatlantic Inter-Society Consensus (TASC). Les résultats à moyen terme seront présentés. Méthodes L’étude randomisait 116 patients, 61...
Article
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To investigate the optimal surgical treatment, remote superficial femoral artery endarterectomy (RSFAE) or supragenicular bypass, for Transatlantic Inter-Society Consensus (TASC) C and D lesions of the superficial femoral artery. Medium-term results will be presented. The study randomized 116 patients, 61 to RSFAE and 55 to supragenicular bypass su...
Article
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Remote endarterectomy is a less invasive technique compared with supragenicular bypass surgery for superficial femoral artery (SFA) occlusive disease. Early restenosis remains one of the drawbacks of this procedure. To prevent restenosis following remote endarterectomy, concomitant cryoplasty of the desobstruct SFA was introduced. A prospective coh...
Article
This study compared transcranial Doppler (TCD) imaging and outcomes of carotid angioplasty and stenting (CAS) in stenosis after carotid endarterectomy (CEA) vs primary atherosclerotic stenoses. A prospectively accumulated database of 812 CAS procedures was analyzed retrospectively. Two groups were created. Group 1 had 72 restenoses at a mean of 71...
Article
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To evaluate the results of embolization in patients with hereditary hemorrhagic telangiectasia (HHT) because of severe epistaxis. All HHT patients who underwent an embolization (between 1992 and 2006) were asked to participate in this retrospective study. Twelve patients who had in total 19 embolization procedures were interviewed. A questionnaire...
Article
Pulmonary arteriovenous malformations (PAVMs) are associated with severe neurologic complications in patients with hereditary hemorrhagic telangiectasia (HHT). Therefore, screening is warranted. Transthoracic contrast echocardiography (TTCE) can effectively detect a pulmonary right-to-left shunt (RLS). To determine prospectively the predictive valu...
Article
Objective: We describe a new method for treating ureteropelvic junction (UPJ) obstruction using a detachable inflatable stent positioned via a cystoscopic transvesicular approach. Conclusion: Eleven patients with UPJ obstruction were treated using a detachable inflatable stent, 64% of whom experienced complete pain relief. In 82% of patients, no...
Article
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Migraine with aura (MA) is associated with cardiac right-to-left shunt. We prospectively studied the association between pulmonary arteriovenous malformations (PAVMs) and MA in hereditary haemorrhagic telangiectasia (HHT). All 220 consecutive HHT patients who underwent high-resolution chest computed tomography for PAVM screening were included prosp...
Article
Techniques for surgical repair of Trans-Atlantic Inter-Society Consensus (TASC) C and D lesions of the superficial femoral artery (SFA) are supragenicular bypass grafting or the less invasive remote endarterectomy (RSFAE). This trial compares the patency rates of both techniques. Randomized, multicenter trial. 116 patients were randomized to RSFAE...
Article
Full-text available
Pulmonary arteriovenous malformations (PAVMs) are associated with severe neurological complications in patients with hereditary haemorrhagic telangiectasia (HHT). The objective of the present study was to prospectively establish the diagnostic value of transthoracic contrast echocardiography (TTCE) as a screening technique for PAVM using chest high...
Article
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To evaluate the long-term single-center results with the AneuRx stent-graft in endovascular abdominal aortic aneurysm (AAA) repair (EVAR). Between December 1996 and August 2003, 212 patients (197 men; mean age 71.3+/-7.0 years) were treated with the AneuRx stent-graft for an infrarenal AAA. Postoperatively, patients were enrolled in a fixed surveil...
Article
The authors report a case of arterial esophageal bleeding resistant to endoscopic hemostasis in a patient in critical condition after complicated gastrointestinal and pulmonary surgery. Unfit for surgery, the patient's massive hemorrhage was successfully treated with superselective coil embolization of the afferent esophageal branch of the thoracic...
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To describe the short-term consequences of endovascular aortic aneurysm repair (EVAR) on renal function after infrarenal (IR) versus transrenal (TR) stent-graft fixation. Between December 1996 and January 2006, 369 consecutive patients were treated with EVAR. All patients had an AneuRx or a Talent stent-graft implanted using IR (AneuRx) or transren...
Article
Background: Carotid angioplasty and stenting (CAS) for recurrent stenosis after carotid endarterectomy (CEA) has been proposed as an alternative to redo CEA. Although early results are encouraging, the extended durability remains unknown. We present the long-term surveillance results of CAS for post-CEA restenosis. Methods: Between 1998 and 2004...
Article
Elective endovascular repair of the thoracic aorta has shown reduced morbidity and mortality when compared with open surgery. The number of studies describing the use of thoracic endovascular stent grafts for acute pathology is limited, however. The purpose of this study was to describe our increasing experience with stent grafting for acute thorac...
Article
Two men aged 73 and 71 years and 2 women aged 76 and 80 years were referred for a false aneurysm (the 3rd patient) or true aneurysm (the other 3 patients) of an extrahepatic portion of the hepatic artery. The first patient was asymptomatic, the third patient had a rupture in the biliary duct and the remaining 2 patients had upper abdominal pain. In...
Article
To report the midterm results of endovascular recanalization of chronic long-segment (> 5 cm) occlusions of the inferior vena cava (IVC) with stent placement. Nine patients (5 men; median age 30 years, range 14-58) with disabling complaints for more than 6 months caused by IVC occlusions were treated by endovascular recanalization. Mean occlusion l...
Article
The use of femoral artery closure devices to obtain hemostasis after percutaneous catheterization has become widespread because of their proven feasibility in combination with patient-related advantages. Since 2002 more than 6,500 patients have undergone either diagnostic angiography or therapeutic intervention via the femoral route with an Angiose...
Article
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To determine long-term results of the prospective Dutch Iliac Stent Trial. The study protocol was approved by local institutional review boards. All patients gave written informed consent. Two hundred seventy-nine patients (201 men, 78 women; mean age, 58 years) with iliac artery disease were randomly assigned to undergo primary stent placement (14...
Article
Full-text available
Purpose: To determine long-term results of the prospective Dutch Iliac Stent Trial. Materials and Methods: The study protocol was approved by local institutional review boards. All patients gave written informed consent. Two hundred seventy-nine patients (201 men, 78 women; mean age, 58 years) with iliac artery disease were randomly assigned to und...
Article
Late complications occur in only in a small percentage of patients with thoracic gunshot injury as a result of remaining bullets. These complications include pneumonia, empyema, hemoptysis, and embolization of the bullet. We describe a 36-year-old man who presented with hemoptysis. He was wounded in 1994 by a gunshot. Ten years after the initial ev...
Article
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During an 8-year period, 355 patients underwent endovascular repair of mainly true (97%) infrarenal aneurysms. After a mean follow-up of 48 months, 11 (3.1%) patients required conversion to open repair and 10 were eligible for open surgical intervention. Via a midline incision, explantation of the endograft was performed by using an infrarenal aort...
Article
Objective: The outcomes of carotid angioplasty and stenting (CAS) are, in addition to patient baseline characteristics, highly dependent on the safety of the endovascular procedure. During the successive stages of CAS, transcranial Doppler (TCD) monitoring of the middle cerebral artery was used to assess the association of cerebral embolism and he...
Article
Objective: Because stents can cause vessel angulation during movement, we hypothesized that internal carotid artery (ICA) stents might lead to alterations of cerebropetal blood flow. This study assessed three-dimensional anatomy and volumetric flow rate (VFR) in the ICA in various head positions by comparing patients treated with carotid angioplas...
Article
To prospectively evaluate emboli detected at transcranial Doppler ultrasonography (US) and outcome of carotid angioplasty and stent placement and compare these findings in patients treated with the use of filtering cerebral protection devices (CPDs) with the findings in patients treated without the use of filtering CPDs. This study was approved by...
Article
Purpose: Percutaneous transluminal angioplasty (PTA) is one of the treatment options for localized obstruction of the subclavian artery. To document long-term durability of this kind of PTA we report a 10-year single-center experience in 110 patients. Methods: From January 1993 to July 2003, 110 patients (72 women; mean age, 62 +/- 10 years) und...
Article
In the treatment of coronary artery disease, peripheral loss of a coronary stent is an unusual complication. We present the case of a patient who suggested that his right leg claudication was caused by a slipped coronary stent 2 years previously. The patient was convinced about this unusual finding based on an airport security check. Examination pr...
Article
To evaluate the long-term results of embolotherapy of pulmonary arteriovenous malformations (PAVMs) in a large group of patients. Between July 1988 and August 2001, 134 consecutive patients underwent embolotherapy of PAVMs with feeding arteries larger than 3 mm or that had previously caused bleeding or systemic complications. The mean follow-up was...
Article
To prospectively document the incidence, location, risk factors for and clinical consequences of restenosis after carotid artery angioplasty and stenting (CAS). Serial duplex and neurological examinations were performed in 217 patients one day (n = 216), 3 (n = 189), 12 (n = 129) and 24 (n = 48) months, after CAS. The relationship between patient,...
Article
Purpose: To assess the impact of cerebral embolism and hemodynamic changes during the successive stages of carotid angioplasty and stenting (CAS) using transcranial Doppler (TCD) monitoring of the middle cerebral artery (MCA). Methods: In 297 patients (206 men; mean age 69.9 +/- 8.0 years), the association of various TCD emboli and velocity variabl...
Article
Objectives: To prospectively document the incidence, location, risk factors for and clinical consequences of restenosis after carotid artery angioplasty and stenting (CAS). Methods: Serial duplex and neurological examinations were performed in 217 patients one day (n = 216), 3 (n 189), 12 (n = 129) and 24 (n = 48) months, after CAS. The relationshi...
Article
Full-text available
To assess, with magnetic resonance (MR) imaging, the number and size of new brain lesions after carotid angioplasty and stent placement (CAS) and to evaluate the association of these new lesions with neurologic deficits and transcranial Doppler ultrasonographic (US) data. Seventy-two consecutive CAS procedures were performed in 72 patients. Patient...
Article
Endoluminal placement of covered stent-grafts emerges as a less-invasive alternative to open surgical repair of thoracic aortic aneurysms (TAA). The present report describes our experience with endovascular stent-grafting in the treatment of descending TAA. From 1997 to 2001, 28 descending TAA's were treated in 27 patients (17 male, mean age 70 yea...
Article
Objective: The purpose of our study was to determine the value of three-dimensional (3D) rotational angiography in the assessment of patients to be treated with covered stents for peripheral arterial aneurysms. Conclusion: Our preliminary experience suggests that 3D rotational angiography appears to be a valid tool in the pre- and perprocedural...
Article
To report our experience with endovascular femoropopliteal bypass grafting using a distensible, radially reinforced polytetrafluoroethylene endograft combined with remote endarterectomy. Forty-one patients (33 men; mean age 70 years, range 45-79) with symptomatic femoropopliteal occlusive disease underwent remote endarterectomy of the superficial f...
Article
Chronic pulsatile compression of the left common iliac vein between the crossing right common iliac artery and the lowest lumbar vertebral body may induce focal intimal proliferation of the vein (May-Thurner syndrome), resulting in impaired venous return and left iliofemoral thrombosis. Corrective surgical treatment requires extensive dissection. I...
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To present a case in which a narrow waist in an abdominal aortic aneurysm (AAA) complicated endovascular repair using a modular bifurcated stent-graft. A 68-year-old man underwent endovascular repair of a 5.9-cm asymptomatic AAA with a self-expanding modular bifurcated stent-graft. After insertion and deployment of the stent-graft, the intraoperati...
Article
Full-text available
Hereditary hemorrhagic telangiectasia (HHT) is a rare autosomal-dominant vascular dysplasia with a high prevalence of cerebrovascular malformations (CVMs), mostly manifested as arteriovenous malformations (AVMs). The natural history and bleeding risk of these CVMs is unknown. The authors investigated the risk of bleeding in conjunction with clinica...
Article
to evaluate the feasibility of endovascular femoropopliteal bypass in combination with remote endarterectomy of the superficial femoral artery (SFA). prospective, open study. thirteen patients with chronic lower-leg ischaemia due to femoropopliteal occlusive disease underwent 14 SFA remote endarterectomy procedures followed by endovascular ePTFE fe...
Article
Report of 1-8 year follow-up of patients treated by percutaneous transluminal angioplasty (PTA) for obstructive atherosclerosis of the infrarenal aorta. Cohort study. Thirty-eight patients aged 26-81 years (mean 50 years) were submitted to undergo percutaneous transluminal angioplasty of the infrarenal aorta. All patients had symptomatic isolated s...
Article
One-year clinical outcome of a new endovascular treatment for long segmental arterial occlusive disease using a ring strip cutter (RSC) to minimise surgical exposure. Prospective, open study. Thirty-eight consecutive RSC procedures in 36 consecutive patients with lengthy occlusive (34) or multiple stenotic (4) femoropopliteal lesions were performed...
Article
Bronchial artery embolization is a well-established treatment for patients with haemoptysis. Communications between coronary and bronchial vessels have been seen on coronary angiography. This report describes a case of a bronchial to coronary artery anastomosis diagnosed prior to embolization in a patient with haemoptysis.
Article
Full-text available
A pulmonary arteriovenous malformation was embolized in a patient with hereditary hemorrhagic telangiectasia. Several unusual complications, including early deflation of a detachable balloon, migration of a coil, and development of severe pulmonary hypertension, occurred. Pulmonary hypertension was attributed to a coexistent left-to-right shunt cau...
Article
Full-text available
Bronchial artery embolization is a well-established treatment for patients with haemoptysis. Communications between coronary and bronchial vessels have been seen on coronary angiography. This report describes a case of a bronchial to coronary artery anastomosis diagnosed prior to embolization in a patient with haemoptysis.
Article
Hereditary hemorrhagic telangiectasia (HHT), also known as Osler-Weber-Rendu disease, is a hereditary disorder leading to easily bleeding telangiectases on skin and mucosal surfaces, and it is associated with the presence of arteriovenous malformations (AVMs) in multiple organ systems. These AVMs may cause serious complications when they are locate...
Article
To assess iliac artery stenosis before and up to 1 year after percutaneous transluminal angioplasty (PTA) with duplex ultrasound (DUS) to determine the incidence of residual and recurrent stenoses and correlate these findings to clinical outcome. Sixty-one patients with 70 iliac artery segments treated with PTA were examined. The peak systolic velo...
Article
Hereditary hemorrhagic telangiectasia (HHT) is an autosomal dominant inherited disorder which may give rise to arteriovenous malformations in lungs and brain. When left untreated, these may cause serious complications. We screened family members of HHT patients for presence of the disease and associated pulmonary or cerebral arteriovenous malformat...
Article
Full-text available
Aortobronchial fistula (ABF) is a rare but highly lethal condition. Four patients with ABF, 10-25 years after surgical repair of a congenital cardiovascular abnormality are reported. All patients presented with haemoptysis. Computed tomographic (CT) scan and aortography were inconclusive in two, diagnostic in one and not performed in another. Three...
Article
To evaluate the feasibility and efficacy of the Mollring Cutter remote endarterectomy (EA) technique in the treatment of occlusive superficial femoral artery (SFA) disease. A new device was developed to perform remote EA of occluded SFAs through a single groin incision. The technique initially uses a conventional ring stripper, which is exchanged f...
Article
Full-text available
Pulmonary arteriovenous malformations may cause a number of complications when left untreated. Embolisation of the feeding vessels is a relatively new approach and information concerning its efficacy and long term results is scarce. Pulmonary arteriovenous malformations with feeding arteries of > 3 mm were treated by embolisation. Right to left shu...
Article
In three relatively young patients (two women of 61 and 44 and a man of 42) spontaneous dissections of the iliac artery were diagnosed. Pain in the groin, with radiation to back or upper leg were the main presenting symptoms, twice leading to groin exploration for femoral hernia. Duplex sonography is an excellent non-invasive examination to visuali...
Article
Digital subtraction offers advantages in surgery that are not generally exploited. This article describes an operating room with integrated digital imaging facilities, planned in co-operation between Philips and the hospital. The experience with this system over one year is evaluated, and a report is given on the results obtained in surgery, interv...
Article
The St. Antonius Hospital is a major referral centre for heart and vascular disease, as well as lung conditions. The Integris C2000 system, installed in the hospital in May 1990, has provided excellent results in an extensive range of vascular and non-vascular interventional procedures, as well as virtually every type of vascular diagnostic examina...
Article
The Integris C2000 is one of a new series of systems specifically designed for use with digital imaging techniques. The system in the St Antonius Hospital has been in use since 4 May 1990. It is mainly employed for diagnostic angiography and vascular interventions, but has also proved very suitable for a range of non-vascular procedures, particular...
Article
The authors discuss the detection of intracranial aneurysms (IA) by means of intravenous digital angiography (ivDSA) in (a)symptomatic first degree relatives of families in which two or more individuals have IA. ivDSA is an almost noninvasive and low-risk diagnostic procedure. Screening, by means of ivDSA, of two affected families is described. In...
Article
The authors discuss the detection of intracranial aneurysms (IA) by means of intravenous digital angiography (ivDSA) in (a)symptomatic first degree relatives of families in which two or more individuals have IA. ivDSA is an almost noninvasive and low-risk diagnostic procedure. Screening, by means of ivDSA, of two affected families is described. In...
Article
This report described the results of digital subtraction angiography (DSA) in the diagnosis of arteriosclerotic disease of the extracranial arteries, especially the distal part of the common- and proximal part of the internal carotid arteries compared to the catheter angiography. 50 patients underwent DSA and conventional angiography. In 85% of the...
Article
The Extracranial-Intracranial (EC/IC) Bypass Procedure is a new method in order to try to increase the Intracranial Perfusion Pressure (ICPP). Postoperative patency of the bypass can be shown by means of Seldinger angiography. By this method no information however is obtained on the hemodynamic function of the bypass. OPG-Gee measures the Ophthalmi...
Article
Four experienced observers independently assessed digital subtraction angiograms (DSA) of 134 renal arteries in 67 patients. Only the main renal arteries were evaluated. All patients were hypertensive and were screened for the existence of renal artery stenosis. The findings were classified in four categories: 0-49% stenosis; 50-99% stenosis; total...
Article
Digital vascular imaging is a new technique for vessel investigation. This article describes the application of the method with intravenous administering of the contrast material for the intra- and extracranial arteries and for the abdominal vessels. The equipment and the conditions to obtain good images are described. The indications for investiga...
Article
A comparative study of radionuclide scanning (perfusion studies in all 18 patients and ventilation studies in 9) and digital subtraction angiography (DSA) was performed in 18 patients with suspected pulmonary thromboembolism. In 17 patients good visualization of the arteries was obtained with DSA; 10 of these patients had no pre-existing lung disea...