RESUMEN
We present the case report of a patient with a history of lung cancer in whom the typical pattern of hypertrophic osteoarthropathy was seen on bone scintigraphy. We discuss the etiologies, pathophysiology, and management of this entity.
Asunto(s)
Huesos/diagnóstico por imagen , Osteoartropatía Hipertrófica Secundaria/diagnóstico por imagen , Humanos , Masculino , Persona de Mediana Edad , Osteoartropatía Hipertrófica Secundaria/patología , CintigrafíaRESUMEN
We present a patient with spleen uptake on bone scanning that was due to sickle cell disease. We also discuss other etiologies for this finding.
Asunto(s)
Anemia de Células Falciformes/diagnóstico por imagen , Anemia de Células Falciformes/metabolismo , Huesos/diagnóstico por imagen , Bazo/diagnóstico por imagen , Bazo/metabolismo , Medronato de Tecnecio Tc 99m/metabolismo , Medronato de Tecnecio Tc 99m/farmacocinética , Huesos/metabolismo , Femenino , Humanos , Hallazgos Incidentales , Radiofármacos , Tomografía Computarizada de Emisión de Fotón Único/métodos , Adulto JovenRESUMEN
In this report, we present a case of complex regional pain syndrome in a 55-y-old woman in whom the diagnosis was made on the basis of the bone scan findings. We also discuss the typical and atypical scintigraphic presentations of this entity, including pathophysiology and management.
Asunto(s)
Síndromes de Dolor Regional Complejo/diagnóstico por imagen , Huesos de la Mano/diagnóstico por imagen , Medronato de Tecnecio Tc 99m , Tomografía Computarizada de Emisión de Fotón Único/métodos , Articulación de la Muñeca/diagnóstico por imagen , Diagnóstico Diferencial , Femenino , Humanos , Persona de Mediana Edad , RadiofármacosRESUMEN
On brain perfusion SPECT, a primary brain lesion presents as a localized defect that corresponds to the mass lesion. (99m)Tc-HMPAO images generally show a focal defect in the region of abnormality, whether containing necrotic tissue, recurrent tumor, or both. Further characterization with MR imaging is needed to confirm the diagnosis, as demonstrated in this case report.
Asunto(s)
Imagen por Resonancia Magnética , Meningioma/diagnóstico por imagen , Exametazima de Tecnecio Tc 99m , Tomografía Computarizada de Emisión de Fotón Único , Adulto , Femenino , Humanos , Meningioma/patologíaRESUMEN
Lumbosacral transitional vertebra (LSTV) is a congenital anomaly of the lumbosacral junction. The association between back pain and LSTV is controversial; however, in our patient the symptoms localized to a hemisacralized left transverse process of L5. LSTV should be included in the differential diagnosis in young patients with lower back pain, and scintigraphic imaging should be considered for diagnostic purposes.
Asunto(s)
Imagen Multimodal , Columna Vertebral/anomalías , Medronato de Tecnecio Tc 99m , Tomografía Computarizada de Emisión de Fotón Único , Tomografía Computarizada por Rayos X , Adolescente , Femenino , Humanos , Región Lumbosacra/diagnóstico por imagen , Columna Vertebral/diagnóstico por imagenRESUMEN
Stress injury is a common cause of exercise-induced anterior shin pain. It is important to distinguish between the various causes of stress injury in a timely manner in order to optimize favorable treatment outcomes. Here, we will discuss a case of medial tibial stress syndrome, or shin splints, as one of the causes of shin pain, as well as how to approach shin pain for a successful diagnosis.
Asunto(s)
Síndrome de Estrés Medial de la Tibia/complicaciones , Síndrome de Estrés Medial de la Tibia/diagnóstico por imagen , Dolor/etiología , Carrera , Adolescente , Diagnóstico Diferencial , Femenino , Humanos , Dolor/diagnóstico por imagen , Cintigrafía , Radiofármacos , Medronato de Tecnecio Tc 99m , Tibia/diagnóstico por imagen , Tibia/lesionesRESUMEN
We present a case demonstrating how correlative imaging with (123)I-ioflupane SPECT and (18)F-FDG PET can be used to help make the diagnosis of Lewy body disease more specific.
Asunto(s)
Fluorodesoxiglucosa F18 , Enfermedad por Cuerpos de Lewy/diagnóstico por imagen , Nortropanos , Tomografía de Emisión de Positrones/métodos , Radiofármacos , Tomografía Computarizada de Emisión de Fotón Único/métodos , Anciano de 80 o más Años , Encéfalo/diagnóstico por imagen , Diagnóstico Diferencial , Humanos , MasculinoAsunto(s)
Diuréticos , Renografía por Radioisótopo/métodos , Niño , Preescolar , Dilatación Patológica/diagnóstico por imagen , Humanos , Lactante , Radiofármacos/farmacocinética , Sensibilidad y Especificidad , Sistema Urinario/diagnóstico por imagen , Enfermedades Urológicas/diagnóstico por imagen , Enfermedades Urológicas/patologíaRESUMEN
We present a patient with a remote history of splenectomy and recent hemicolectomy for colon adenocarcinoma. On routine surveillance chest/abdomen/pelvis CT, a lesion suspicious for hepatic metastasis was identified. Followup MRI was inconclusive. For more specific tissue characterization, imaging with Tc-99m heat-damaged RBCs was obtained to guide further patient management. Tc-99m-labeled, heat-damaged RBC scintigraphy is an underused modality that is highly specific for detecting ectopic or accessory splenic tissue. There have been many reported cases of patients undergoing unnecessary biopsies or laparotomies to remove suspicious masses that were subsequently found to be ectopic splenic tissue.
RESUMEN
We present a case illustrating how cerebral perfusion scintigraphy can be used to assist in crucial medical decision making in the intensive care setting for patients who are maintained on life support but are clinically suspected to have brain death. Cerebral perfusion scintigraphy can confirm brain death but cannot be used to diagnose it. (99m)Tc-HMPAO and (99m)Tc-ethylcysteinate dimer are the preferred imaging agents since they cross the blood-brain barrier.
Asunto(s)
Muerte Encefálica/diagnóstico por imagen , Imagen de Perfusión , Preescolar , Femenino , Humanos , Cuidados para Prolongación de la VidaRESUMEN
PURPOSE: Proper identification of the cardiac cycle is essential for gated SPECT myocardial perfusion imaging. We have developed an alternate method of ECG for gating, that is, using the peripheral pulse wave (PW) as the triggering signal for gated SPECT acquisition. The aim of this study is to compare the use of this method of gating with the standard ECG trigger. METHODS: We tested the PW triggering by comparing it with the ECG trigger. We evaluated 33 patients (25 males, 8 females), average age of 61 years (39-80) referred for stress myocardial perfusion imaging. Data from all patients were acquired twice and were processed by CEqual and QGS software. We compared the left ventricular ejection fraction (LVEF), end-diastolic and end-systolic volumes (EDV, ESV). Paired t test and Pearson correlation coefficient were used for comparison. RESULTS: The mean LVEF, EDV, and ESV calculated with the ECG trigger were 0.52, 120, and 64, respectively, those with the pulse-wave trigger were 0.48, 126, and 71, respectively. Mean paired difference for LVEF was -0.034 (P<0.001), for EDV 5.9 (P=0.012), and for ESV 7.9 (P<0.001). Pearson correlation coefficient for LVEF was 0.955, for EDV 0.987, and for ESV 0.991 (P<0.001 for all correlations). CONCLUSION: Triggering of gated-data acquisition by the PW is feasible. Quantitative parameters of cardiac function correlate highly with those obtained from the ECG trigger and the absolute differences are not clinically significant across a wide range of values.