PubMed Health⌕ Search

Biomedical subjects

D J Venderink

Publications and source records attributed to D J Venderink.

6 recordsLinked to original sources
PubMed2001

Microhemorrhages in the central nervous system: report of a patient with microhemorrhages in brain and spinal cord.

A 53-year-old, woman with microhemorrhages in the brain and spinal cord is described. This patient was initially seen with a reversible oculomotor paresis and hypertension, a year later she developed spinal cord symptoms. T2-weighted magnetic resonance imaging showed characteristic hypointense lesions in the brain and spinal cord consistent with microhemorrhages. Although the occurrence of microhemorrhages in the brain has been described before, the combination of brain and spinal cord microhemorrhages has not been reported yet. The observations in our patient suggest that microvascular changes related to hypertension are a common cause for these microhemorrhages.

Blood Vessels↗
PubMed1999

[Dental MRI. Phantom study and clinical results].

Magnetic resonance imaging (MRI) is used as a diagnostic tool for special indications in oral and maxillofacial surgery. We describe a new MRI technique that presents images in a panoramic view analogous to orthopantomography. This technique is based on three-dimensional T1- and T2-weighted sequences. The familiar panoramic view in MRI provides better orientation and makes diagnosis faster and easier. However, the acquisition time is long (6-12 min per sequence), with a correspondingly high risk of motion artifacts. Moreover, the final workup is also time-consuming. These restrictions could be overcome by progress in hardware and software. There are promising indications for dental MRI.

Adult↗
PubMed1999

The value of magnetic resonance imaging in the diagnosis of mandibular osteomyelitis.

Our aim was to evaluate the accuracy of magnetic resonance imaging (MRI) and bone scintigraphy in the diagnosis of mandibular osteomyelitis. Twenty patients with mandibular osteomyelitis were prospectively investigated by conventional radiography, bone scintigrams and MRI. All diagnoses were verified either by surgery or by the clinical course. There was no significant difference between bone scintigraphy and MRI in the detection of osteomyelitis or the assessment of its extent. MRI was significantly better than scintigraphy at detecting the presence and assessing the extent of extraosseous inflammation. We always use MRI to diagnose osteomyelitis. For long-term follow-up of patients with mandibular osteomyelitis, we recommend MRI and bone scintigraphy.

Acetylmuramyl-Alanyl-Isoglutamine↗
PubMed1998

Perfusion CT of the brain: diagnostic approach for early detection of ischemic stroke.

PURPOSE: To determine the value of perfusion computed tomography (CT) in a clinical study of patients with stroke and compare the results with single photon emission CT (SPECT) findings. MATERIALS AND METHODS: Perfusion CT was performed within 6 hours of symptom onset in 32 patients with possible stroke. Cerebral blood volume (CBV), cerebral blood flow (CBF), and time to peak contrast material enhancement were calculated on the basis of the CT results. Cerebral SPECT was also performed in a subgroup of 18 patients. Perfusion CT and SPECT findings were compared in a lesion-by-lesion analysis. Perfusion CT results were compared with follow-up CT and magnetic resonance imaging findings. RESULTS: Areas of reduced CBF were detected with the aid of perfusion CT in 25 of 28 patients with a proved infarct (sensitivity, 89%). The results of the CBF maps corresponded well to SPECT findings in 13 (81%) of 16 patients, but ischemia was located outside the scanning level in the other three patients and was therefore missed. Perfusion CT revealed various changes in CBF, CBV, and time to peak enhancement in ischemic territories. CONCLUSION: Perfusion CT not only allows early detection of cerebral ischemia but also yields valuable information about the extent of perfusion disturbances.

Adult↗