|
Purpose: Bone scintigraphy is a diagnostic study used to evaluate the distribution of active bone formation in the body.
Patient Preparation:
-
No fasting is required.
-
Explain the procedure to patient.
-
Unless contraindicated, patients should be well hydrated and instructed to drink 1.5 to 2 liters or around 8-oz glasses of water between the time of injection and the time of delayed imaging.
-
Patient is encouraged to empty urinary bladder more frequently.
-
Give strict instructions to avoid urine contamination of clothing.
-
The patient should be asked to urinate immediately before delayed imaging and to drink plenty of fluids for at least 24 h after injection.
Patient information and precautions:
-
Ask about any history of fractures, trauma, osteomyelitis, cellulitis, edema, arthritis, neoplasms, metabolic bone disease, or limitation of joint movement.
-
Enquire about current symptoms.
-
Ask if any previous bone scan done or any other recent scintigraphy, (especially with 131I, 67Ga).
-
Any recent CT /MRI / X- Ray reports and scan films.
-
Relevant laboratory results (e.g., prostate-specific antigen in patients with prostate cancer)
-
In females of reproductive age enquire if pregnant or breast-feeding. Pregnancy is a contraindication, unless terminally ill or warranted by referring doctor, for a bone scan. Doubtful cases of pregnancy have to be confirmed before injecting the MDP dose for medico legal purposes.
7. History of therapy that might affect the results of bone scintigraphy (e.g., antibiotics, steroids, chemotherapy, radiation therapy, diphosphonates, or iron therapy)
8. History of orthopedic and nonorthopedic surgery to see for prosthetic implants , colostomy bag , that might affect the results of bone scintigraphy
-
History of any known anatomic or functional renal abnormalities. Check if patient has an indwelling catheter /condom drainage for urine and ensure there is no urine leak from the drainage site.
PROTOCOL:
Depending on the indication or purpose of the study you must decide whether three phase or static skeletal phase images are required.
1.Dynamic study (2-5 seconds per frame): shows the vascularity of region of interest.
2.Blood pool image (500K counts): done 5 min post injection.
3.Planar bone scan (Static Skeletal phase images)
4.SPECT bone scan: prod
Interactive Discussion Board
Do you have an interesting case? Do you need a second opinion? Is there an issue you would like to discuss with your fellow nuclear medicine physicians. Members can upload their images and their comments on to the discussion board. Click here to start a new discussion. Current Topics
Read more...
|