ABSTRACT
Intravenous brain angioscintigraphy in combination with immediate static scan are very useful as a complement to the clinical and electroencephalographic data in diagnosis of brain death. Confusion in the differentiation of extracerebral from intracerebral flow on the dynamic radionuclide angiogram can be accomplished by identifying presence or absence of uptake in cerebral sinuses. Authors consider that the radionuclide study should be carried out in posterior view. Exploration is safe, quick to perform and easy to interpret and it enables to distinguish brain death from comas due to drug intoxication.
Subject(s)
Brain Death , Brain/diagnostic imaging , Cerebral Arteries/diagnostic imaging , Coma/etiology , Brain Injuries/diagnostic imaging , Cerebrovascular Circulation , Child , Child, Preschool , Coma/diagnostic imaging , Diagnosis, Differential , Electroencephalography , Humans , Male , Meningoencephalitis/diagnostic imaging , Radionuclide ImagingABSTRACT
Renal uptake of 67Ga-citrate is described in a patient with biopsy-proven amyloidosis of the kidneys, due to Familiar Mediterranean Fever. After administration 150 MBq (4 mCi) 67Ga-citrate, scans were done at 48, 72, and 120 h. Intense uptake was noted in both kidneys. A renal biopsy done 5 days after the 67Ga-citrate scan revealed a pattern typical of amyloidosis. Gallium scanning can be useful in patients with fever of unknown origin. Renal amyloidosis can be considered when renal uptake of 67Ga-citrate associated with nephrotic syndrome is observed.
Subject(s)
Amyloidosis/diagnostic imaging , Familial Mediterranean Fever/diagnostic imaging , Gallium Radioisotopes , Kidney Diseases/diagnostic imaging , Adult , Amyloidosis/etiology , Familial Mediterranean Fever/complications , Humans , Kidney Diseases/etiology , Male , Radionuclide ImagingABSTRACT
99MTc is an ideal nuclide for Pediatric use. Combined with DTPA is an adequate agent for renal studies. 15 patients with ages ranging from eight days to eleven years were studied (10 patients with congenital malformation and five with renal tumour). The dosimetric advantages, the obtention with a single nuclide dose of multiple images and the diagnostic usefulness in congenital malformation and renal tumour suggest their use.
Subject(s)
Kidney Neoplasms/diagnostic imaging , Kidney/abnormalities , Pentetic Acid , Strontium , Technetium , Child , Child, Preschool , Female , Humans , Infant , Infant, Newborn , Kidney/diagnostic imaging , Male , Radionuclide ImagingABSTRACT
The results obtained with intravenous brain angioscintigraphy (IBAS) with 99 mTc-DTPA(Sn) are evaluated in 61 patients with clinical suspicion of cerebellar, cerebral or cranial lesions of posterior location or without focal signs or with a previous IBAS in anterior view being normal or of low significance. One hundred patients without demonstrable cerebral or cranial pathology were explored to define the normal characteristics and variation of the IBAS in posteior view. Of the 61 patients with pathology, 45 showed angioscintigraphic alterations. The following angioscintigraphic patterns were found: 1. Perfusion increased, 2. Perfusion diminished, 3. Flip-flop, 4. Mixed pattern, 5. Circulatory arrest, 6. Jugular venous reflux, 7. Normal IBAS associated with an abnormal morphologicall study, 8. Normal IBAS associated with a normal morphological study.
Subject(s)
Brain Diseases/diagnostic imaging , Brain Neoplasms/diagnostic imaging , Brain/diagnostic imaging , Adult , Aged , Brain Death , Cerebrovascular Disorders/diagnostic imaging , Child , Female , Humans , Jugular Veins/diagnostic imaging , Male , Meningeal Neoplasms/diagnostic imaging , Meningioma/diagnostic imaging , Middle Aged , Paget Disease, Extramammary/diagnostic imaging , Radionuclide ImagingSubject(s)
Myocardial Infarction/diagnostic imaging , Phosphoric Acids , Technetium , Acute Disease , Adult , Aged , Electrocardiography , Humans , Methods , Middle Aged , Radionuclide ImagingABSTRACT
DTPA-Sn-99 mTc is an excellent radionuclide for brain scintigraphy procedures with a rapid blood clearance through glomerular filatration. No previous preparation of the patient is necessary. We have studied forty nine patients with primary or metastatic brain tumours as well as calvarium metastases. There have been five false negatives. We have found three types of scintigraphic patterns depending on whether the lesion is better visualized in early or late images, or does not change throughout the study. The sequential brain study, obtaining views at five minutes, and at one and two hours post-injection allows for an adequate morphological characterization of the lesion and occasionally, a histological diagnosis.
