Nazenin Elahi

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We performed a double-phase Tc-99m-SestaMIBI SPECT study on a patient who presented with a mass located at the skull base. The results were compared with double-phase T1-201 SPECT study. Early phase (30 min) SPECT images of both radiopharmaceuticals demonstrated increased radiotracer uptake in the region of the tumor. However, late images (180 min) revealed(More)
A patient with undifferentiated stage IV (T3N3M0) nasopharyngeal carcinoma (WHO type III) underwent pre- and one-month post-therapy bone scintigraphy as part of an ongoing trial combining scintigraphic and radiographic modalities. The patient had advanced disease in the nasopharynx and bulky cervical lymph nodes at presentation. Initial bone scintigraphy(More)
PURPOSE We attempted to ascertain the impact of Co-60 conventional external radiotherapy (cRT) on the perfusion of normal brain tissue in relation to the radiation doses delivered to the tumors in patients with primary brain tumors. MATERIALS AND METHODS After surgery 18 patients (pts) were due to undergo cRT with a total dose of 5400- 6400 cGy. All the(More)
Problems stemming from the withdrawal of TSH suppressing doses of T4 or T3 and false-negative studies associated with 131I scintigraphy have justified the search for other radionuclides in the follow-up of patients with well-differentiated thyroid carcinoma. Although 201Tl and 99Tcm-MIBI (MIBI) have been suggested as alternatives, their role in the(More)
UNLABELLED We prospectively studied the diagnostic potential of 201Tl and 99mTc-sestamibi (MIBI) SPECT for evaluating the extent of primary disease and differentiating residual/recurrent disease from post-therapy changes in patients with nasopharyngeal carcinoma (NPC). METHODS Fifty patients (20 initial presentation, 30 post-therapy evaluation) underwent(More)
A patient who presented with recurrent ovarian carcinoma with elevated levels of CA 125 was evaluated for skeletal metastases by routine whole body bone scintigraphy. Although no bone metastasis was visualized, there was intense accumulation of tracer in the soft tissues corresponding to the liver, pelvis, and intestinal/peritoneal surface, suggestive of(More)
UNLABELLED Dobutamine is a positive inotropic and chronotropic agent and is being widely used as a pharmacologic stress agent in patients unable to achieve maximal dynamic exercise test. The purpose of the current study was to document the dobutamine induced false-positive septal defect in terms of its frequency and extent on 201Tl myocardial SPECT in(More)