ABSTRACT
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.
Subject(s)
Magnetic Resonance Imaging , Mandibular Diseases/diagnosis , Osteomyelitis/diagnosis , Acetylmuramyl-Alanyl-Isoglutamine/analogs & derivatives , Adolescent , Adult , Aged , Child , Chronic Disease , Female , Humans , Male , Mandibular Diseases/diagnostic imaging , Middle Aged , Osteomyelitis/diagnostic imaging , Prospective Studies , Radionuclide Imaging , Reproducibility of Results , Technetium Tc 99m MedronateABSTRACT
A 54 year old patient of average intelligence with a severe and enduring loss of old autobiographical memories after herpes simplex type 1 infection is described. She was tested with a comprehensive neuropsychological battery two years after the infection. Special emphasis was laid on examining different aspects of retrograde memory. The neurological examination involved MRI and SPECT. Brain damage was found mainly in the right temporofrontal region, but minor left sided damage to this region seems possible. The patient was in the normal or slightly subnormal range for all tested anterograde memory functions, but manifested severe retrograde memory deficits with respect to episodic old memories and more moderate deficits in tests of general knowledge (semantic old memories). It is concluded that the ecphory of old autobiographical memories relies heavily on an activation of the right lateral temporofrontal junction area, but that probably only some complementary left hemispheric damage to these regions will lead to major and persistent retrograde amnesia. Alternatively, the disconnection between major prefrontal and posterior cortical regions may provide a basis for retrograde amnesia.
Subject(s)
Amnesia, Retrograde/diagnostic imaging , Frontal Lobe/diagnostic imaging , Temporal Lobe/diagnostic imaging , Tomography, Emission-Computed, Single-Photon , Amnesia, Retrograde/diagnosis , Amnesia, Retrograde/physiopathology , Female , Frontal Lobe/physiopathology , Humans , Magnetic Resonance Imaging , Middle Aged , Temporal Lobe/physiopathology , Tomography, X-Ray ComputedABSTRACT
The importance of dental CT in comparison to conventional OPT in implantation diagnostics is demonstrated in specific indication groups (atrophy of upper and lower jaw, patient after tumor and reconstructive surgery). The application of radiological techniques is illustrated in relation to diagnostic information quality, radiation exposure and cost effectiveness regarding clinical routine use.
