99mTc LABELED RED BLOOD CELL GI BLEEDING SCAN

DATE: 2/28/2006

PROCEDURE:  Following IV administration of 99mTc autologous labeled red blood cells, anterior projection images of the abdomen and pelvis over one hour were obtained in a dynamic acquisition:  1 min/frame x 60 frames/

99mTc LABELED RBC DOSE: [20] mCi

CLINICAL HISTORY: The patient is a [...]-year-old [fe]male with bright red blood per rectum who has had a negative upper GI and lower GI endoscopy. The patient is referred for evaluation of active GI bleeding. 

FINDINGS: 

Normal tracer activity is seen in the blood pool of the abdominal aorta, common iliac arteries, femoral arteries, liver and spleen on all of the interval images. Later images show accumulation of tracer in the urinary bladder, which is consistent with excreted tracer. No evidence for abnormal tracer uptake is noted ectopic to the blood pool that would be consistent with an active GI bleed.

CONCLUSIONS: 

 There is no evidence for an active gastrointestinal bleed during the initial 1 hr observation period.

Thank you for referring this patient to the UCLA Nuclear Medicine Clinic.

I, [...], M.D., Ph.D., have reviewed this Nuclear Medicine study personally, and am in full agreement with the findings of the report presented here.